The UK HVAC industry is on the cusp of a major regulatory shift. From 1st January 2025, single-split air conditioning systems using refrigerants with a Global Warming Potential (GWP) of more than 750 will be banned from sale in the UK. This move is part of the UK’s F-Gas regulations, aimed at reducing greenhouse gas emissions and aligning with net-zero targets.
With the deadline fast approaching, it’s crucial for businesses, facility managers, and homeowners to understand how this impacts air conditioning installations, maintenance, and future-proofing investments.
What Is Changing?
The new regulations specifically ban the sale of new single-split air conditioning systems (those with less than 12kW cooling capacity) that rely on refrigerants with a GWP above 750.
This affects commonly used refrigerants such as:
- R-410A (GWP ~2,088)
- R-407C (GWP ~1,774)
Why Is This Happening?
The ban is part of a broader phase-out of high-GWP refrigerants under the F-Gas Regulation (517/2014). These gases contribute to climate change, and their reduction aligns with the UK’s Net Zero Strategy.
The HVAC industry is expected to transition to low-GWP alternatives, such as:
- R-32 (GWP 675) – A more energy-efficient, lower-emission refrigerant already used in many modern systems.
- R-290 (Propane, GWP ~3) – A natural refrigerant offering excellent efficiency but with safety considerations due to flammability.
- CO₂ (R-744, GWP 1) – A sustainable refrigerant used in some high-performance cooling applications.
Who Will Be Affected?
This regulation will impact:
✔️ Businesses and Facility Managers – Those planning to install or upgrade air conditioning systems must ensure compliance with low-GWP refrigerants.
✔️ HVAC Contractors and Installers – Engineers must be prepared to specify and install compliant systems while phasing out older refrigerants.
✔️ Homeowners – Those investing in residential air conditioning should ensure their system uses an approved refrigerant.
How to Prepare for the 2025 Ban
1️⃣ Audit Existing Systems – Identify units using high-GWP refrigerants and assess whether replacement or retrofitting is necessary.
2️⃣ Plan Future Installations Wisely – Any new air conditioning systems installed from 2025 onwards must comply with the GWP limit.
3️⃣ Check Manufacturer Compliance – Leading brands, including Daikin and Mitsubishi, are already offering R-32-based solutions.
4️⃣ Budget for Upgrades – If your business relies on older systems, consider transitioning to energy-efficient, future-proof models before the regulation kicks in.
The Long-Term Benefits
✅ Lower Carbon Footprint – Compliance with F-Gas regulations means a direct contribution to reducing greenhouse gas emissions.
✅ Improved Energy Efficiency – Low-GWP refrigerants, such as R-32, offer higher efficiency and lower operating costs.
✅ Future-Proofing Investments – Ensuring your HVAC systems are compliant now avoids unexpected costs and regulatory challenges in the future.
Final Thoughts
The 2025 ban on high-GWP single-split systems is just one step in the UK’s wider climate policy. The HVAC industry must stay ahead by embracing sustainable cooling solutions. Businesses and homeowners looking to upgrade their air conditioning should act now to ensure compliance and efficiency for years to come.
🔹 Need expert advice on compliant air conditioning solutions? Contact MGI Ltd today to discuss your options.