Why Your Air Conditioner Is Not Cooling & How to Fix It

On a scorching summer day, discovering that your air conditioner is blowing warm air can be incredibly frustrating. If your air conditioner is not cooling, you’re not alone—this is one of the most common HVAC problems homeowners face.

Did you know that 75% of AC failures are preventable with proper maintenance? Issues such as clogged filters, incorrect thermostat settings, or low refrigerant levels can drastically reduce your AC’s efficiency. Understanding these problems and their solutions can help you save up to 30% on energy bills and avoid costly repairs.

This guide will walk you through the top reasons your air conditioner is not cooling, easy troubleshooting steps, and out-of-the-box tips to enhance cooling efficiency like never before.

Aircon Not Cooling

Common Reasons Your Air Conditioner Is Not Cooling

If your air conditioner is running but not cooling your home effectively, several factors could be causing the issue. Below are some of the most common reasons and how to fix them.

Clogged Air Filters – A Major Cause of Cooling Problems

  • Dirty air filters restrict airflow, making your AC work harder to cool your home. A clogged filter can reduce cooling efficiency by up to 25% and increase your energy bills.
  • How to Fix It:
    • – Check the air filter every 30 days.
    • – Replace or clean it every 1–3 months, depending on usage and air quality.
    • – Consider upgrading to HEPA or electrostatic filters for improved air circulation.

For a more detailed guide on air conditioning filter change or maintenance click here.

Low Refrigerant Levels – The Hidden Problem

  • Your AC relies on refrigerant to absorb and remove heat from the air. If refrigerant levels are low due to leaks, the system cannot cool effectively, and you may notice lukewarm air coming from the vents.
  • How to Fix It:
    • – If you hear a hissing sound near the unit, it may indicate a refrigerant leak.
    • – Contact a certified technician to inspect and refill the refrigerant.
    • – If leaks are found, they must be sealed before refilling, or the issue will continue.

Incorrect Thermostat Settings – A Simple but Overlooked Issue

  • Sometimes, the problem is not with the AC itself but with the thermostat settings. If the thermostat is not set correctly, your system may not cool efficiently.
  • How to Fix It:
    • – Ensure the thermostat is set to “Cool” mode, not just “Fan.”
    • – Set the temperature to 75°F (24°C) for optimal efficiency.
    • – If using a smart thermostat, check that it is not in energy-saving mode during peak heat hours.

Dirty Evaporator and Condenser Coils – A Common Heat Exchange Issue

  • Over time, dirt and debris accumulate on the evaporator and condenser coils, reducing their ability to transfer heat. This can lower cooling efficiency by up to 20%.
  • How to Fix It:
    • – Clean the coils annually using a soft brush or vacuum.
    • – Schedule a professional deep cleaning every two years.

Blocked or Leaky Ductwork – The Invisible Air Loss

  • If you have a central AC system, leaks or blockages in the ductwork can cause cool air to escape before reaching the rooms, leading to inefficient cooling. Even a small leak can cause up to 10% energy loss.
  • How to Fix It:
    • – Inspect the ducts for visible gaps or disconnected sections.
    • – Use HVAC-approved tape or mastic sealant to seal any leaks.
    • – Consider insulating the ducts to improve cooling efficiency.

Beyond Basic Fixes: Other Reasons Your AC Might Not Be Cooling

1. Your AC Unit Is Too Small for Your Space

An undersized air conditioner will struggle to cool your home, running continuously without ever reaching the desired temperature.

How to Fix It:

  • – Determine the correct BTU (British Thermal Unit) rating needed for your space.
  • – A 1,500 sq. ft. home typically requires a 3-ton AC unit (36,000 BTUs).

For more accurate details use our BTU calculator.

2. Poor Insulation Is Reducing Cooling Efficiency

Even if your AC is working perfectly, poor insulation in your home can prevent it from cooling effectively.

How to Fix It:

  • – Upgrade window insulation with weather stripping or double-glazed windows.
  • – Use reflective window films to block heat from entering.
  • – Check for gaps around doors, vents, and electrical outlets that let hot air in.

3. AC Compressor Issues – A Possible Mechanical Failure

The compressor is a crucial component of the cooling system. If it’s failing, the unit may still run, but it will not cool effectively.

How to Fix It:

  • – Listen for grinding or clicking noises, which may indicate compressor failure.
  • – Have a technician check the compressor’s pressure levels.
  • – If the compressor is faulty, replacement may be necessary.

What to Do Before Calling an AC Technician

✔︎ Check the power supply – Ensure the AC unit is plugged in and the circuit breaker hasn’t tripped.
✔︎ Inspect the outdoor unit – Clear leaves and debris around the condenser for better airflow.
✔︎ Look at the fan blades – Dirty or damaged blades can reduce cooling performance.

📍 Case Study: A London Café in Crisis

A popular café in London faced rising indoor temperatures of 30°C (86°F) during a summer heatwave because their air conditioner suddenly stopped cooling.

🔎 Diagnosis:

  • Clogged filters restricted airflow.
  • Low refrigerant levels disrupted cooling.

✔︎ Fixes Applied:

  • Filters were replaced, improving airflow by 40%.
  • Refrigerant was recharged, restoring full cooling capacity.

💡 Results:

  • Temperature dropped by 8°C within an hour.
  • The café saved 15% on energy bills due to improved efficiency.

The Cost of Ignoring AC Cooling Problems

🚨 Higher Bills: A malfunctioning unit can increase energy costs by 35%.
🚨 Major Repairs: Small, ignored issues can turn into expensive compressor failures.
🚨 Poor Air Quality: A dirty AC system can circulate dust, mold, and allergens, leading to health problems.

How Regular Maintenance Can Prevent Cooling Issues

Did you know that regular maintenance can reduce the likelihood of your aircon not cooling by up to 75%? Here’s how:

  • Filter Cleaning: Prevents airflow restrictions that lead to inefficiency.
  • Coil Inspection: Ensures optimal heat exchange, reducing energy consumption by 10–15%.
  • Refrigerant Checks: Keeps your system running at peak performance.

Schedule AC Maintenance today!

Out-of-the-Box Tips to Maximise Cooling Efficiency

➜ Use Curtains or Blinds: Block sunlight to reduce the room temperature by up to 4°C, easing the workload on your aircon.

➜ Upgrade to Smart Thermostats: Studies show that smart thermostats can improve cooling efficiency by 23%.

➜ Check Insulation: Proper insulation prevents cool air from escaping, increasing efficiency by up to 30%.

When to Call a Professional

If your aircon is still not cooling after trying basic troubleshooting steps, it’s time to bring in an expert. Look for these warning signs:

  • – Frequent short cycling (turning on and off rapidly).
  • – Unusual noises or odors from the unit.
  • – Consistently higher energy bills without increased usage.

If your air conditioner is not cooling, don’t panic! By identifying common problems like clogged filters, refrigerant leaks, or thermostat settings, you can restore cooling efficiency and save money on repairs.

Regular maintenance can prevent 75% of cooling issues—so take action today to ensure your AC keeps you comfortable all summer long!

FAQs About Aircon Not Cooling

Warm air may indicate low refrigerant, dirty filters, or a malfunctioning compressor.

Filters should be cleaned or replaced every 1–3 months, depending on usage.

No, refrigerant handling requires professional certification due to environmental regulations.

With proper maintenance, most aircon units last 10–15 years.

Yes, but if it takes excessively long, there might be issues with airflow or refrigerant levels.

Do Dehumidifiers Work in Cold Rooms?

Dehumidifiers can for sure work in cold rooms, but their efficiency depends on the type of dehumidifier and the specific conditions of the cold room. Here’s a simple breakdown of how and when dehumidifiers are effective in cold environments.

Cold room with a dehumidifier inside it

Why Would a Cold Room Need a Dehumidifier?

Cold rooms are designed to maintain low temperatures, often to store perishable items or prevent spoilage. However, humidity can still be an issue in these spaces. High humidity levels can lead to:

  • ➜ Ice formation on walls, ceilings, or cooling equipment.
  • ➜ Frost build-up on products or packaging.
  • ➜ Mold or mildew, which can damage goods and compromise hygiene.

A dehumidifier helps control excess moisture, ensuring the cold room operates efficiently and maintains the integrity of stored items.

How Do Dehumidifiers Work in Cold Rooms?

Dehumidifiers remove moisture from the air, but their performance is affected by temperature. In cold rooms, standard dehumidifiers may struggle because low temperatures can freeze the condensation that forms inside the unit. To address this, specialised dehumidifiers are required.

Types of Dehumidifiers for Cold Rooms

  1. Refrigerant (Compressor-Based) Dehumidifiers:

    • Best suited for temperatures above 15°C.
    • Not ideal for most cold rooms, as coils can freeze in colder conditions.
  2. Desiccant Dehumidifiers:

    • Designed for low-temperature environments.
    • Use a moisture-absorbing material (desiccant) instead of cooling coils, making them highly effective in cold rooms.
    • Operate efficiently even in sub-zero temperatures.
  3. Low-Temperature Refrigerant Dehumidifiers:

    • Specialized units with anti-freeze protection.
    • Can work in environments as cold as 5°C.

Factors to Consider for Using a Dehumidifier in a Cold Room

  1. Room Temperature:

    • Use a desiccant dehumidifier for rooms below 10°C.
  2. Humidity Levels:

    • Identify the specific moisture level in the cold room to choose the right dehumidifier capacity.
  3. Size of the Room:

    • Larger cold rooms require higher-capacity dehumidifiers to handle the volume of air effectively.
  4. Ventilation:

    • Proper ventilation and air circulation enhance the dehumidifier’s performance.
  5. Maintenance:

    • Regular cleaning and servicing are essential to prevent ice build-up in the unit and ensure long-term functionality.

Benefits of Dehumidifiers in Cold Rooms

  • ★ Prevents frost and ice build-up, reducing maintenance on cooling systems.
  • ★ Protects stored goods from moisture damage.
  • ★ Improves energy efficiency by reducing strain on refrigeration systems.
  • ★ Maintains hygiene and prevents mold growth.

Contact us For Cold Room Installations

Cold Room Experts Since 2004 

Why Is My Air Conditioner Not Working? 7 Common Causes and Simple Fixes

Why is your Air Conditioner Not working

A malfunctioning air conditioner can turn a cozy day into an unbearable ordeal. Whether you’re in a bustling city like London or a quieter locale, dealing with a non-functional AC is universally frustrating. From basic thermostat issues to complex compressor failures, this guide breaks down why your air conditioner may not be working, offers actionable fixes, and includes preventative maintenance tips to keep your system running smoothly.

Common Causes of Air Conditioner Not Working

Thermostat Problems: The Control Center Issue

Your thermostat acts as the brain of your AC. If it’s not working properly, the entire system can fail. London homeowners often encounter problems due to outdated or improperly calibrated thermostats.

Example:

Imagine coming home after a long day to find your room sweltering, only to realise your thermostat was accidentally set to “heat.”

DIY Fix: Replace the batteries and ensure the thermostat is set to “cool.” If the temperature setting isn’t syncing, recalibrate it per the user manual.

Prevention Tip: Opt for a smart thermostat for better efficiency and automatic updates.

Tripped Circuit Breaker or Blown Fuse

Frequent power surges in urban areas like London can overload circuits, leading to tripped breakers or blown fuses.

DIY Fix: Reset the breaker in your home’s electrical panel. If the breaker trips again, seek professional assistance.

Real-Life Insight:

A family in East London faced repeated outages until they installed a dedicated circuit for their AC unit, solving the issue.

Prevention Tip: Ensure your AC is on a dedicated circuit and have an electrician inspect the wiring periodically.

Clogged Air Filters: A Common Oversight

Dirty filters are the silent killers of air conditioners, reducing airflow and cooling efficiency.

DIY Fix:

  • Inspect the filter for dirt buildup.
  • Replace or clean it every 1–3 months, depending on use.

For a detailed Guide on AC filters Click here

Prevention Tip:

Set up a calendar reminder for filter changes. This practice improved air quality and cooling in over 80% of London flats surveyed in a local study.

Low Refrigerant Levels

Refrigerant is critical for cooling. Leaks, often unnoticed until the system underperforms, are a common issue.

DIY Fix:

Handling refrigerant requires professional training. If you suspect a leak, call a licensed technician.

Numerical Example:

A standard AC unit requires about 2–4 pounds of refrigerant. Losing even 10% annually due to small leaks can cause inefficiency.

Blocked Condenser Unit

Outdoor condensers often face blockages from leaves, dirt, and debris, especially in suburban London homes with gardens.

DIY Fix:

  • Turn off the unit.
  • Use a hose to rinse the condenser gently.

Real-Life Example:

A homeowner in Greenwich reported a 20% efficiency improvement after cleaning their unit.

Prevention Tip: Maintain at least a 2-foot clearance around the condenser for airflow.

Frozen Evaporator Coil

Restricted airflow or refrigerant problems often lead to frozen coils, resulting in warm air or complete shutdown.

DIY Fix:

  • Switch off the system to let the coils thaw.
  • Check for blocked ducts or filters.

Prevention Tip:

Ensure consistent airflow by keeping vents open and filters clean. Routine servicing can identify low refrigerant levels early.

Compressor and Motor Issues

The compressor, often called the heart of the AC, circulates refrigerant. If it fails, cooling stops entirely.

DIY Fix:

Unfortunately, repairs for compressors and motors are best left to professionals.

Real-Life Case:

In central London, a faulty compressor repair saved a business £1,000 compared to a full AC replacement.

Prevention Tip: Schedule annual maintenance to check for early signs of wear.

When to Call a Professional?

If the above fixes don’t resolve your issue, professional intervention is necessary. AC repair specialists in London are equipped to handle refrigerant leaks, electrical malfunctions, and more.

Our Expertise:

Be Cool Air Conditioning offers fast, reliable services tailored to London’s unique climate. Whether it’s an urgent repair or routine check, our team has you covered.

How to Prevent Air Conditioner Problems in the Future

  • Routine Maintenance: Schedule yearly AC tune-ups. Book here
  • Filter Replacement: Clean filters regularly to avoid airflow issues.
  • Energy Audit: Identify inefficiencies with a home energy audit.
  • Smart Systems: Invest in smart thermostats for precise control.

Need Immediate AC Assistance?
Contact us today for reliable and prompt repair services, from routine maintenance to emergency AC repairs. Our team is here to help keep your system running at peak performance, restoring your comfort in no time.

AirCon Not Working FAQs

Warm air often results from low refrigerant levels, a frozen coil, or a dirty filter. Check and address these issues before calling a technician.

No. Refrigerant handling requires specialized equipment and licensing due to safety and environmental concerns.

A tripped breaker may indicate a short circuit, an overloaded circuit, or a failing compressor. Consult an electrician if the problem persists.

Clean the condenser at least once every six months. In areas with heavy foliage, increase the frequency to every three months.

Set your thermostat to 24°C (75°F) during summer. Each degree above 22°C can save up to 10% on energy bills.

Unusual sounds may stem from a loose part, a failing motor, or debris in the condenser. Shut off the unit and call a technician for inspection.

A functional air conditioner is essential for comfort, especially during sweltering London summers. From clogged filters to advanced compressor issues, understanding the root cause of your AC problem can save time and money. When in doubt, professional help ensures your system operates efficiently and reliably.

How to Fix a Refrigerator Making Loud Noise: A Commercial Kitchen Guide

When your commercial fridge starts making loud noises, every minute counts. In London’s fast-paced hospitality sector, a noisy refrigerator isn’t just a nuisance, it’s a potential threat to your business operations and food safety compliance. Let’s explore how to identify the cause and resolve it quickly to minimise business disruption.

Refrigerator Making Loud Noise

Understanding Normal vs Problematic Refrigerator Sounds

Commercial refrigerators naturally produce certain operational sounds. However, distinguishing between normal functioning and problematic noises is crucial for maintaining your kitchen’s efficiency. The key lies in recognising changes in your unit’s usual sound pattern.

Common Types of Refrigerator Noises and Their Causes

Buzzing or Humming Sounds

A commercial fridge’s compressor typically produces a steady humming sound during operation. However, when this hum becomes louder than usual, it often indicates:

Your compressor might be running at higher speeds due to temperature regulation issues. Think of it as a car engine working harder to climb a hill the extra effort creates more noise. In some cases, failing compressor components or electrical problems could be affecting the compressor’s performance.

Rattling Noises

In busy commercial kitchens, rattling sounds often develop from regular operation. Imagine a washing machine with a loose panel, the constant operation gradually affects various components. Common causes include:

The compressor mounting bolts might have worked themselves loose over time. Fan blades could have become damaged or unbalanced through regular wear. Refrigerant lines might be making contact with other components, creating a persistent rattle. Cabinet panels often become loose from constant kitchen vibrations.

Clicking or Knocking

Whilst occasional clicking is normal during start-up and shutdown cycles, frequent or loud knocking sounds suggest deeper issues. It’s rather like hearing a knock in your car’s engine, something that requires immediate attention.

Professional Diagnosis Process

Our commercial refrigeration technicians follow a systematic approach:

Initial Assessment

We begin with a comprehensive evaluation that includes sound pattern analysis, temperature performance checks, and visual inspection of all components. Think of it as a doctor’s initial examination, we need to understand all the symptoms before making a diagnosis.

Advanced Diagnostics

For persistent issues, we employ thermal imaging to detect hot spots, pressure testing for refrigerant systems, and specialist vibration monitoring equipment. This thorough approach ensures we identify the root cause rather than just treating symptoms.

Immediate Solutions for Common Issues

Compressor Noise

Professional repairs might include mounting system replacement or compressor component repair. In some cases, full compressor replacement becomes necessary. Think of this as heart surgery for your refrigeration system, it’s complex but sometimes essential.

Fan-Related Noise

Our technicians can replace damaged fan blades, service fan motors, and adjust fan mounting. Regular cleaning and balancing of fan assemblies helps prevent future issues.

Commercial Refrigeration Repair Costs in London

Diagnostic Services

  • ➜ Emergency call-out (2-hour response): £200-300 + VAT
  • ➜ Standard diagnostic assessment: £150-250 + VAT
  • ➜ Comprehensive system analysis: £300-400 + VAT

Common Repairs

  • ➜ Fan replacement: £200-400 + VAT
  • ➜ Compressor repair: £500-1,000 + VAT
  • ➜ Complete compressor replacement: £1,000-2,500 + VAT
  • ➜ Refrigerant system service: £300-600 + VAT

Preventive Maintenance to Avoid Noise Issues

Daily Operations

Training your kitchen staff in proper monitoring proves invaluable. They should watch for changes in operational sounds, maintain consistent temperature checks, and regularly inspect door seals. Think of it as having a daily health check for your equipment.

Professional Maintenance

Our service contracts include quarterly system inspections, component lubrication, and electrical connection checking. We provide comprehensive documentation for compliance purposes, ensuring your business meets all regulatory requirements.

Emergency Response Protocol

For urgent noise issues, we provide 24/7 emergency response across Greater London. We understand that in commercial kitchens, every minute of downtime costs money. That’s why we offer temporary unit provision if needed and prioritise service for contract customers.

Long-term Solutions and Recommendations

System Upgrades

Consider investing in modern, energy-efficient units with enhanced insulation systems. Smart monitoring technology can help detect issues before they become serious problems.

Maintenance Planning

Implement regular service schedules and staff training programmes. Proper noise monitoring protocols help catch issues early, potentially saving thousands of pounds in emergency repairs.

A noisy refrigerator in your commercial kitchen requires immediate professional attention. Our team of London-based commercial refrigeration specialists understands the urgency of maintaining quiet, efficient operation in your food service business.

Noisy Refrigerator FAQs

While commercial refrigerators naturally produce some operational noise, certain sounds warrant immediate attention. If you hear loud banging, persistent clicking, or grinding noises, these often indicate mechanical issues requiring professional assessment. Think of it like a car engine, whilst a gentle hum is normal, knocking or rattling suggests something needs attention. Particularly concerning are sudden changes in your unit's normal sound pattern.

Our emergency response team operates 24/7 across Greater London, typically reaching your premises within 2 hours of your call. We prioritise commercial kitchen emergencies because we understand that downtime directly impacts your business. For contract customers, we provide immediate priority service and can arrange temporary refrigeration if needed.

Our diagnostic services range from £150-400 + VAT, depending on the complexity of the issue and timing of the call. Emergency out-of-hours diagnostics typically fall at the higher end of this range. However, for contract customers, these diagnostic fees are often included in their service agreement. Remember, early diagnosis often prevents more costly repairs later.

The repair duration varies based on the underlying issue. Simple repairs like fan replacement or component tightening might take 1-2 hours, whilst more complex repairs like compressor replacement could require 4-6 hours. We always aim to complete repairs within one business day to minimise disruption to your operations.

Yes, unusual noises can indicate problems that might affect temperature stability, potentially compromising food safety standards. This could impact your FSA rating and compliance with HACCP guidelines. We provide detailed documentation of all repairs and maintenance for your compliance records.

Regular maintenance significantly reduces the risk of developing noise issues. We recommend quarterly professional inspections, including component lubrication, electrical testing, and performance optimisation. Daily checks by your staff should include monitoring unusual sounds, checking temperature displays, and inspecting door seals.

Consider replacement if your unit is over 10 years old and experiencing frequent noise issues or if repair costs exceed 50% of a new unit's cost. Modern units offer better energy efficiency and often pay for themselves through reduced operating costs. We can provide a cost-benefit analysis to help inform your decision.

Still Hearing That Noise? Schedule a Professional Inspection to Keep Your Fridge Running Smoothly!

We've been in the Refrigeration business since 2004, with over 150,000 jobs done with 99% customer satisfaction.

Why Is Your Refrigerator Vibrating? Causes, Costs, and Tips to Fix It

refrigerator vibrating

If you’ve noticed your refrigerator vibrating, it could be more than just a minor inconvenience. Vibration issues often point to underlying problems that can lead to reduced cooling efficiency, higher electricity bills, and even long-term damage to the unit. For London businesses, where energy costs are already high, addressing these issues quickly can save both money and hassle.

Common Causes of Refrigerator Vibrations

  1. Uneven Positioning
    If a refrigerator isn’t level, it can cause vibration. This is one of the most common and easily fixable causes. When one side is slightly higher or lower than the other, it forces the compressor to work harder, leading to unwanted shaking.

  2. Compressor Issues
    The compressor is the core of the refrigeration system, responsible for cooling. When it’s worn or overworked, it may vibrate excessively, making the whole unit shake. Compressors typically get noisier with age, so an older unit might vibrate as a sign of wear.

  3. Loose or Worn-out Components
    Over time, parts like fan blades, mounts, or internal panels can become loose, causing them to vibrate as the fridge operates. This not only creates noise but also reduces efficiency and can lead to increased energy consumption.

  4. Overloaded or Uneven Shelving
    Placing too many items or unevenly distributing weight on the shelves can throw the refrigerator’s balance off, resulting in vibrations. Heavy items at the top or unbalanced loads often make the fridge vibrate more than usual.

How Vibrations Affect Cooling Efficiency (and Your Wallet)

How Vibrations Affect Cooling Efficiency (and Your Wallet)

Vibrating refrigerators aren’t just noisy—they can also impact cooling efficiency. Studies show that refrigerators with persistent vibration issues can lose up to 15% of their cooling efficiency. This means that if your business’s monthly refrigeration costs are £100, you could be losing around £15 each month due to poor performance. Over a year, that’s an extra £180 in unnecessary costs.

For larger units or businesses with multiple refrigerators, this adds up quickly. Additionally, inefficient cooling puts more strain on the compressor, potentially shortening its lifespan and leading to costly repairs or replacements.

How Vibrations Affect Cooling Efficiency (and Your Wallet)

Tips to Prevent and Fix Refrigerator Vibrations

Here’s how you can keep your refrigerator stable, efficient, and vibration-free:

  • ➔ Level the Refrigerator
    Use a spirit level to check that your refrigerator is evenly balanced. Most refrigerators have adjustable feet; simply turn them to raise or lower each corner as needed until the fridge sits level on the floor.
  •  
  • ➔ Inspect and Tighten Loose Parts
    Regularly check for any loose screws, mounts, or panels inside and outside the refrigerator. Tighten them as needed to reduce rattling and vibration.
  •  
  • ➔ Clean the Compressor and Fan
    Dust and debris can build up around the compressor and fan, causing them to work harder and create vibrations. Cleaning these components every 3-6 months can improve efficiency and reduce noise.
  •  
  • ➔ Distribute Weight Evenly
    Avoid overloading the fridge and make sure items are balanced across shelves. Heavier items should be placed at the bottom to keep the fridge steady and prevent tilting.
  •  
  • ➔ Schedule Regular Maintenance. Learn more 
    Planned Preventative Maintenance (PPM) can identify early signs of wear or imbalance, allowing you to fix minor issues before they become costly problems. For businesses, scheduling PPM services every 6 months can help maintain performance and prevent energy losses.

Final Thoughts

A vibrating refrigerator may seem like a small issue, but it can lead to bigger problems, especially for London businesses where operating costs are high. By taking simple preventive measures and investing in regular maintenance↗, you can keep your fridge running smoothly, save on energy costs, and avoid pricey repairs.

So, if your refrigerator is vibrating, don’t ignore it – fix it and keep your business cool, efficient, and cost-effective!

Keep your fridge running smoothly.

check for vibrations and save on energy costs today!

Why Is Your Fridge Fan Making Noise? Causes, Prevention, and Savings Tips

If you’re hearing unusual sounds coming from your refrigerator fan, you’re not alone. Noisy fridge fans are a common issue, whether it’s in the freezer or the main unit, and they can disrupt your peace at home or in a commercial setting. Fortunately, understanding the causes, implementing prevention tips, and scheduling regular maintenance can help you avoid these issues and even save money in the long run.

Why Is the Fan in Your Freezer or Fridge Making Noise?

Fridge fans are essential for circulating cold air throughout the refrigerator, ensuring even cooling. When they start making noise, it usually signals an underlying issue that needs attention.

Common Causes of a Noisy Refrigerator Fan:

  1. Dust and Dirt Buildup Over time, dust and debris can accumulate on the fan blades and in the motor, causing a rattling or buzzing sound as the fan struggles to operate. This is one of the most common causes, especially in high-traffic areas or commercial settings where dirt and dust can build up faster.

  2. Ice Buildup Around the Fan In freezers, ice buildup around the evaporator fan can cause grinding or whirring sounds. This happens when moisture freezes onto the fan blades or in the surrounding area, preventing the fan from moving freely.

  3. Worn-Out Bearings Bearings help the fan motor spin smoothly. As they wear out with time and use, you may hear a grinding or squeaking noise. Worn bearings are often more common in older refrigerators and commercial units that experience heavy use.

  4. Obstructions or Loose Components Sometimes, items inside the fridge or freezer can accidentally block the fan’s airflow or cause parts to shift, leading to unusual sounds. A minor adjustment can resolve this, but ignoring it may lead to larger issues over time.

Have a look at the video on what a damaged or non-working commercial refrigerator fan sounds like 

How Regular Maintenance Helps You Save Money

By addressing these issues early, you’re not only prolonging the life of your fridge but also saving on potential repair or replacement costs. Regular maintenance can reduce the risk of fan-related repairs by up to 40%, and according to industry data, households can save around £150-£300 annually by maintaining an efficient fridge that uses less energy.

For commercial units, these savings are even more significant. A well-maintained refrigerator in a commercial setting can save businesses an average of £500-£800 per year on energy and repair costs alone, while reducing the chances of unexpected breakdowns that could disrupt operations.

How Much Could You Save in the Long Run?

Let’s put these numbers into perspective. Suppose you’re spending an average of £200 per year on emergency repairs for your refrigerator. By investing in regular maintenance and preventing issues with your fan, you could reduce this by up to 70%, cutting your costs to around £60 per year. Over five years, that’s a savings of £700 not to mention the extended life of your appliance, which reduces the need for replacement sooner than necessary

If your refrigerator fan is making noise, it’s worth addressing the issue sooner rather than later. By understanding the causes, taking preventive measures, and investing in regular maintenance, you can keep your refrigerator running smoothly, avoid unexpected repairs, and even save a significant amount of money over time.

With simple steps and consistent care, you can keep your fridge fan quiet, efficient, and problem-free for years to come.

Fridge Fan Still Making Noise? Call our expert Engineers

Quality & Quick repairs since 2004

AC Smells Musty? Here’s What You Need to Know

A musty odour coming from your AC can be more than just a nuisance; it’s typically an indication of underlying problems that need to be addressed. Whether you have a faint, damp scent or a more intense mildew stench, recognising the reasons and treatments for a musty-smelling AC can help you breathe fresher air and maintain your AC system in good working order.

women reacting to ac smelling musty

Types of AC Smells and What They Mean

Your AC can produce a variety of smells, each indicating a specific issue. Identifying the smell can help you determine the problem and address it promptly:

1. Musty Smell

  • What it Means: Indicates mould or mildew growth, often due to blocked drain lines, dirty filters, or high humidity.
  • Potential Problems: Poor indoor air quality, respiratory irritation, and decreased system efficiency.

2. Burning Smell

  • What it Means: Could signal an overheating motor, electrical issue, or a dirty blower.
  • Potential Problems: Fire hazards, equipment damage, and unsafe operation.

3. Rotten Egg Smell

  • What it Means: Often caused by a dead animal trapped in the ductwork or system.
  • Potential Problems: Unpleasant odour, health risks, and potential contamination of your ductwork.

4. Chemical Smell

  • What it Means: Might indicate refrigerant leaks or chemical buildup inside the unit.
  • Potential Problems: Health risks from inhalation and inefficient cooling performance.

5. Smoky Smell

  • What it Means: Indicates an issue with electrical components or wiring.
  • Potential Problems: Electrical hazards, potential system failure, and safety concerns.

6. Sewer Smell

  • What it Means: Caused by a dry or clogged condensate drain that allows sewer gases to escape.
  • Potential Problems: Health risks from exposure to harmful gases and lingering odours in your home.

By recognising these smells and addressing the underlying causes, you can prevent further damage, improve indoor air quality, and ensure your AC operates safely and efficiently.

If you’re unsure about a smell or how to resolve it, it’s best to consult a professional.

Why Does Your AC Smell Musty?

A musty smell from your AC usually means mould or mildew is present. Here’s why it might happen:

  • Blocked Drain Lines
    Condensation drains through a pipe, but if it’s blocked, moisture builds up and creates the perfect spot for mould to grow.

  • Dirty Air Filters
    Dusty filters trap moisture, making it easy for mould to form. The musty smell then spreads through your home as air passes through.

  • High Humidity in Ducts
    Excess moisture in the ductwork, especially in humid areas, encourages mould and mildew growth, leading to that damp smell.

  • Mould on the Evaporator Coil
    The evaporator coil can collect dust and moisture, providing a breeding ground for mould that spreads odours with the cool air.

  • Old or Neglected Units
    Older AC systems or those lacking regular maintenance often collect dirt and moisture, making them more likely to smell musty.

A man fixing an ac smelling musty

How to Get Rid of Musty Smells from Your AC

Ac smelling musty, it’s unpleasant but they’re often easy to fix. Here are some simple steps to tackle the problem and keep it from coming back:

  • Replace or Clean Air Filters
    Dirty filters can trap moisture and allow mildew to grow. Replace or clean your AC filters every 1–3 months to improve airflow and reduce odours.

  • Flush the Drain Line
    Clear the drain line with a mix of vinegar and water. Pour the solution in to remove blockages and prevent moisture build-up, which can lead to mould.

  • Check and Clean the Ducts
    If you notice mould in your ducts, you may need a professional cleaning. This helps eliminate odours and improves indoor air quality.

  • Clean the Evaporator Coil
    Use a soft brush to gently clean dust off the evaporator coil. For deeper cleaning, spray a coil cleaner or contact an HVAC technician for help.

  • Control Humidity with a Dehumidifier
    High humidity can make your AC more prone to mould. A dehumidifier helps control moisture levels and keeps your system fresh.

  • Schedule Regular Maintenance
    Professional AC servicing includes cleaning and checking for hidden issues. This prevents odours and keeps your system running smoothly.

Book your AC service appointment now.

Is a Musty Smelling AC Dangerous?

While the smell itself might not be harmful, the underlying cause can pose serious risks to your health and indoor air quality. A musty odour often indicates mould or mildew in the AC system, which can release tiny spores into the air. These spores can significantly impact respiratory health, especially for sensitive individuals.

  • Mould Exposure Risks:
    Studies show that mould spores can trigger allergic reactions in up to 20–30% of people, including symptoms like sneezing, runny nose, and itchy eyes. For individuals with asthma, exposure to mould can worsen symptoms in 40–60% of cases.

  • Air Quality Concerns:
    A mouldy AC system can reduce indoor air quality by up to 30%, making it harder for everyone in the home to breathe comfortably, especially those with pre-existing conditions like COPD or bronchitis.

  • Long-Term Health Effects:
    Prolonged exposure to mould spores may lead to chronic respiratory issues. In severe cases, it could cause hypersensitivity pneumonitis—a condition that affects about 1 in 100,000 people but can result in long-term lung damage if untreated.

How to Keep Your AC Smelling Fresh Naturally

Musty AC smells can be avoided with a few thoughtful steps. Here are some unique tips to help maintain a clean and odor-free air conditioning system:

  • ✔︎ Opt for Washable Filters
    Consider using washable filters that can be cleaned and reused. This not only prevents dust accumulation but also ensures a fresh start every time you clean them.

  • ✔︎ Install an AC Drain Pan Tablet
    Place a drain pan tablet in the condensate pan to prevent algae and mould from forming. These tablets dissolve over time, keeping the pan clean without extra effort.

  • ✔︎ Enhance Ventilation Around Your Unit
    Ensure your AC unit has good airflow by keeping the surrounding area free of obstructions like furniture, boxes, or plants. This helps reduce stagnant moisture.

  • ✔︎ Use Natural Cleaning Solutions
    Clean your evaporator coil and other accessible parts using mild, non-toxic cleaners like a mix of baking soda and water. This reduces chemical exposure while keeping your unit fresh.

  • ✔︎ Upgrade to a Smart Thermostat
    A smart thermostat can help regulate temperature and humidity more precisely, reducing the risk of excess moisture in your system that leads to smells.

  • ✔︎ Add Essential Oil Pads to Your System
    Some systems allow for essential oil-infused pads to be added near the vents. This is a simple way to maintain a light, pleasant scent in your home while running the AC.

Take these small but impactful steps to keep your AC in perfect condition. For expert assistance and system checks, book your AC service appointment now.

If your AC smells musty, don’t ignore it. While it might start as a mild inconvenience, allowing mould and mildew to build up in your system can lead to bigger problems down the road. By identifying the cause, performing routine maintenance, and addressing issues early, you can enjoy fresh, cool air without the unwelcome musty odour.

For professional AC cleaning and maintenance services, or if the smell persists despite your efforts, consider reaching out to US. A little attention now can save you from larger headaches later, ensuring your AC keeps you cool and comfortable – without the musty scent!

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