Keeping cool during a British summer is essential, and your air conditioning unit’s refrigerant plays a crucial role. This guide breaks down the different types of refrigerants (often called “AC gas“), helping you make an informed decision.
What is Refrigerant?
Refrigerant is the working fluid in your AC unit. It absorbs heat from inside your home and releases it outside, creating a cooling effect. The type of refrigerant significantly impacts the unit’s efficiency, environmental impact, and running costs.
Common Refrigerant Types:
Let’s look at the main players:
- R-22 (Freon): This older refrigerant has been phased out in the UK and most of the world due to its ozone-depleting properties. It’s now illegal to install systems using R-22, and finding replacement gas can be difficult and expensive. If your system still uses R-22, it’s likely nearing the end of its lifespan and a replacement is advisable.
- R-410A (Puron): This was the standard replacement for R-22. It’s a hydrofluorocarbon (HFC) and doesn’t deplete the ozone layer like R-22. However, it has a high Global Warming Potential (GWP), meaning it contributes to climate change. While still widely used, it’s being phased down in favour of more environmentally friendly options.
- R-32: This is the current leading refrigerant. It has a significantly lower GWP than R-410A (approximately one-third), making it a much more environmentally responsible choice. It’s also more energy-efficient, meaning lower running costs for you. Many new AC units are designed specifically for R-32.
R-22 (Freon): This older refrigerant has been phased out in the UK and most of the world due to its ozone-depleting properties. It’s now illegal to install systems using R-22, and finding replacement gas can be difficult and expensive. If your system still uses R-22, it’s likely nearing the end of its lifespan and a replacement is advisable.
R-410A (Puron): This was the standard replacement for R-22. It’s a hydrofluorocarbon (HFC) and doesn’t deplete the ozone layer like R-22. However, it has a high Global Warming Potential (GWP), meaning it contributes to climate change. While still widely used, it’s being phased down in favour of more environmentally friendly options.
R-32: This is the current leading refrigerant. It has a significantly lower GWP than R-410A (approximately one-third), making it a much more environmentally responsible choice. It’s also more energy-efficient, meaning lower running costs for you. Many new AC units are designed specifically for R-32.
| Feature | R-22 (Freon) | R-410A (Puron) | R-32 |
|---|---|---|---|
| Ozone Depletion | High | None | None |
| Global Warming Potential (GWP) | High (1810) | High (2088) | Medium (675) |
| Efficiency | Lower | Moderate | Higher |
| Availability | Limited/Banned | Widely Available (but phasing down) | Widely Available |
| Typical Lifespan of AC Unit (with proper maintenance) | 10-15 years (if still operational) | 10-15 years | 10-15 years |
Maintenance and Lifespan:
Regardless of the refrigerant, regular maintenance is crucial for a long AC unit lifespan (typically 10-15 years). This includes:
- ● Annual servicing: A qualified technician should check refrigerant levels, clean coils, and inspect components. This helps maintain efficiency and prevent leaks.
- ● Filter changes: Regularly replacing air filters (every 1-3 months, depending on usage) ensures good airflow and prevents strain on the system.
Efficiency and Running Costs:
For new AC installations, R-32 refrigerant is the clear winner. Its lower GWP (675 compared to R-410A’s 2088) translates to a significantly reduced environmental footprint. This is crucial as regulations are increasingly favouring refrigerants with lower environmental impact. In terms of running costs, R-32 systems often offer a 5-10% improvement in energy efficiency. Over a typical 10-15 year lifespan of an AC unit, this can result in substantial savings on your energy bills. If you’re still using an R-22 system, replacement is a high priority. The cost of R-22 refrigerant is rising due to the phase-out, making repairs expensive. Upgrading to an R-32 system not only eliminates this issue but also provides the benefits of improved efficiency and a much lower environmental impact. Choosing R-410A, while currently available, means investing in a technology that is actively being phased down, making it a less sensible long-term investment than R-32.
Choosing the Right Refrigerant:
If you’re buying a new AC unit, choose one that uses R-32. It’s the most environmentally friendly and efficient option currently available. If you have an older R-22 system, consider replacing it with a modern R-32 unit. While R-410A is still available, its phase-down means it’s not a future-proof choice.
Key Takeaways:
- ● R-32 is the best refrigerant choice for new AC units due to its lower GWP and higher efficiency.
- ● Regular maintenance is essential for all AC units to ensure optimal performance and lifespan.
- ● Replacing an old R-22 system with a new R-32 unit is a worthwhile investment.
By understanding the different refrigerant types, you can make an informed decision and ensure your home stays cool efficiently and responsibly.
Ready to Upgrade Your Air Conditioning System?
If you’re still unsure about what air conditioning gas you need or are considering upgrading to a more energy-efficient and eco-friendly system, we can help. At Be Cool Refrigeration, we specialise in installing and maintaining air conditioning units that use the latest refrigerants like R410A and R32, ensuring your system is both cost-effective and environmentally responsible.
Contact us today for expert advice or to schedule your installation. Let’s help you stay cool while reducing your energy costs and carbon footprint!
UK Refrigerant Regulations
The handling and use of refrigerants in the UK is strictly regulated:
- UK Government: F-Gas regulations - Requirements for using, recovering, and disposing of fluorinated greenhouse gases.
- HSE: Refrigeration safety - Health and safety guidance for refrigeration systems, including natural refrigerants.
Written by
Ali Elm
Ali is the Head of Operations at Be Cool Refrigeration with over a decade of hands-on experience in HVAC and commercial refrigeration. He oversees every installation, repair, and maintenance project, making sure the work meets the highest standards. Ali holds full F-Gas certification and has worked across residential, commercial, and industrial refrigeration systems throughout London and the South East. When he is not on site, he writes these guides to help business owners and homeowners understand their cooling systems better.