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Air Conditioning & Refrigeration Blogs
Expert Insights, Maintenance Tips, and the lates updates on Air Conditioning & Refrigeration.
Your air conditioner’s filter might seem like a simple component, but it plays a crucial role in maintaining indoor air quality and ensuring your AC system’s optimal performance. Understanding when and how to change your filter can prevent costly repairs and improve your home’s air quality significantly.

Your air conditioning filter serves as the first line of defense against airborne particles. As air circulates through your HVAC system, the filter captures dust, pollen, pet dander, and other microscopic particles. Without proper filtration, these contaminants can accumulate inside your AC unit, leading to reduced efficiency and potential system damage that may require professional AC repair.
The frequency of filter changes depends on several key factors:
Change your filter every 90 days. This timeline assumes average air quality and regular AC usage. However, during peak cooling seasons, consider checking your filter monthly for visible dirt accumulation.
If you have one pet, change your filter every 60 days. For multiple pets or pets that shed heavily, monthly changes are recommended. Pet hair and dander can quickly clog filters, forcing your system to work harder.
Replace filters every 30-45 days. More frequent changes help maintain better indoor air quality, which is crucial for family members with respiratory sensitivities.
For houses near construction sites or in areas with high pollution levels, check filters every 2-3 weeks and replace them monthly or as needed.

Understanding how filters work helps explain why regular maintenance is crucial. Your AC filter uses a combination of mechanical and electrostatic filtration:
The filter material creates a maze-like structure that captures particles through:
A clogged filter can reduce airflow by up to 50%, causing:
This is why our regular maintenance service includes thorough filter inspection and replacement as needed.
Don’t wait for scheduled replacement if you notice:
MERV (Minimum Efficiency Reporting Value) ratings indicate filtration effectiveness:
Basic filtration suitable for minimal air quality needs. Changes needed every 30-60 days.
Medium filtration good for most households. Replace every 60-90 days.
Superior filtration recommended for homes with pets or allergy sufferers. Change every 45-60 days.
Hospital-grade filtration requiring professional AC installation assessment to ensure system compatibility.
While changing filters is typically a DIY task, having a professional examine your system during filter changes can prevent potential issues. Our maintenance specialistscan:
Consistent filter maintenance provides numerous benefits:
Regular filter maintenance is essential for optimal AC performance and indoor air quality. While general guidelines suggest changes every 60-90 days, your specific situation might require more frequent replacements. When in doubt, schedule aprofessional maintenance checkto establish the best filter maintenance schedule for your system.
Check the label on your current filter or refer to your AC system's manual for the correct dimensions.
No. Disposable filters are designed for one-time use and cleaning them can damage the material, reducing effectiveness.
HEPA filters are ideal for homes with allergies or respiratory concerns. However, ensure your system is compatible before switching.
Some systems have filters in both the air handler and return vents. Replace all filters simultaneously for optimal performance.
Yes. If you're uncomfortable replacing the filter or want a full system check, hiring a technician is a good option.
Filters have arrows indicating airflow direction. Ensure the arrow faces the direction air flows into the unit.

Address:
Office 7, 35/37 Ludgate Hill
London, EC4M 7JN
Expert Insights, Maintenance Tips, and the lates updates on Air Conditioning & Refrigeration.


Address:
Office 7, 35/37 Ludgate Hill
London, EC4M 7JN
Air Conditioning Maintenance & Service


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