Existing R410A air conditioning in Great Britain can still be serviced by F-gas certified engineers while parts and refrigerant for maintenance remain available. You cannot drop R32 into an R410A circuit. From January 2025, placing many new small single-split systems with refrigerant GWP of 750 or more on the GB market is restricted, so new small splits are typically R32 designs. Replacement means a new matched system, not a gas change. Treat EU future ban headlines carefully: GB has its own retained F-gas framework.
Service the system you have
An R410A split that cools well does not need panic replacement. Leak checks, filters, coils and controls keep it legal and useful. Recovery and recharge follow F-gas rules. Photograph nameplates so the engineer brings the right cylinder and tools.
End of life arrives when compressors fail, leaks are chronic, or parts dry up. That is an engineering and cost decision, not a social-media deadline.
- R410A maintenance remains a certified job.
- R32 is not a drop-in for R410A coils and compressors.
- New small single-splits on the GB market are typically R32 after the 2025 placing-on-market rules.
- Pipework reuse is a judgement call after flush, test and sizing checks.
What changed for new equipment
GOV.UK F-gas materials and the HFC phasedown consultation trail explain the direction of travel for hydrofluorocarbons in GB. In plain buyer terms: many new small single-split products placed on the GB market from January 2025 cannot rely on refrigerants at or above GWP 750, which is why R32 wall splits dominate new domestic quotes. Exact product scope sits in the regulations. Your installer should state the refrigerant on the quote.
Do not invent EU 2027 dates as automatic GB law. Great Britain retained and amends its own F-gas rules. If you operate across NI or EU sites, take separate advice. This page is GB home and small-business framing.
Replacement is a system change
Moving to R32 means new indoor, new outdoor, correct charge, and usually new flared connections and often new line sets if contamination or oil type is a risk. Controls and apps may change brand family. Budget for making good and electrical isolation upgrades if the old supply is marginal.
When not to replace yet: a healthy R410A system with available parts and no chronic leak. When not to try a DIY gas swap: always. Wrong refrigerant destroys compressors and breaks the law.
How to brief the engineer
Send outdoor and indoor model photos, age if known, fault history and whether you want like-for-like positions. Ask for a written option: repair R410A versus replace with R32, with scope for pipework.
Use the quote form. Say R410A to R32 so the firm sends someone who will not treat it as a top-up.
Frequently asked questions
Can you convert my R410A unit to R32 with a recharge?
No. Different pressures, oils and component designs. Conversion stories that skip a full system redesign are how compressors die.
Is it illegal to own R410A air conditioning in the UK?
No. Existing systems can be used and maintained under F-gas rules. Restrictions bite hardest on placing certain new equipment on the market and on refrigerant handling.
Will my old pipework work with a new R32 split?
Sometimes, after assessment. Contaminated or undersized lines may need replacement. Get that decision in writing before deposit.
Core buying guides
Start with these high-intent guides, then dig into the rest of the library.
Related guides
Sources and further reading
How this guide was prepared
This guide was written by the Local AC Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.