AIRCONTOPUP Car AC Aircon R1234YF Air Con Air Conditioning Top Up Refill Regas DIY Gas Can

You need to do a full 60-minute evacuation of your AC system if you want to keep it healthy. Never just 'top it up', especially if you have actual R1234yf gas in your system—remember, this product is a 'better-than' DIY alternative mixture. Furthermore, take your time letting the mixture into your system slowly and in tiny amounts. You must ensure that only gas hits your compressor, not liquid! Because this is an alternative mixture, it does not match R1234yf in mass-to-volume ratio. Pay close attention to the 'equivalent mass' reading on the label; you will need to do the back-calculations to figure out the exact weight required for your specific car. Be careful when reading reviews for this product and do your research first. You don't want to end up forcing the wrong-sized valve on to the can (best-case scenario) or overcharging your system (worst-case scenario). Air conditioning systems are incredibly expensive to repair. However, if done properly, this product is excellent. The keys practically froze in the ignition of my Merc GLA ...well, almost! I have been using this brand for years and highly recommend it.

Easy to use great value

Pricey for the amount supplied but does the job.

Used to successfully regas a Seat Mii 2019 where the air con was not working. I checked the low side pressure and it showed 40 PSI (both engine off and engine on, so compressor was not kicking in). If you follow the product instructions it says in this scenario DO NOT regas as you have a compressor fault. However, after some research I learnt that compressors have a pressure switch which stops the compressor running when system pressure is low. In my case simply increasing the pressure by adding the refrigerant got the compressor and the aircon going again. I fully regassed one car, reducing the vent temp from 25C to 4C then topped up a second car, reducing the vent temp from 25C to 3C.

Does what it says. No complaints