Quote:
Originally Posted by shiumai
I had the same issue - AC blowing hot air on my 2013 BRZ last year. Took it to an AC shop, and the guy said I just needed a refrigerant recharge. No leaks were found, but I don't use my AC often. He said to use it more often to circulate the coolant in the system. It took about half an hour and cost me about $100 total.
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2013 to 2021, checks out. That's about the time frame where I see most cars with R134a lose enough charge from natural means (SAE fittings are designed to a 1/4oz per fitting per year loss tolerance) to stop working. I usually get these cars in, suck out the last 0.1 pound of gas, put 200PSI of nitrogen in 'em, and look for the pressure to drop while I go over the system with the UV light, Big Blu and a Snap-On Sonic Check over areas of concern. On that vintage of a car everything usually checks out and it's good to go for a recharge.
... Not when it's been messed with though lol