Car Questions
RepairPal is your advocate for car care advice and guidance

AC is blowing hot.

(1999 Pontiac Firebird)
in Knoxville, TN on March 15, 2009
Our son's Pontiac Firebird's AC is blowing hot air. Does this system require a recharge or is it a closed system? If it is a closed system then what are the choices before we head out to a mechanic?
Displaying 2 answers & 0 comments
Popular Answer
on September 25, 2009
Is it a closed system...most definitely. The problem with cars is they rattle, vibrate, and develop micro leaks and operate under pressure so the refrigerant can quite easily leak out.
Home A/C systems are closed as well, but no one drives them all over the country, they're stationary and aren't susceptible to the leaks that cars are.
So when someone says the A/C works fine except it needs a charge, they're really telling you they have a leak when they shouldn't have and it really doesn't work fine at all.
Typically the leak is at the compressor shaft seal. then the condenser and then any of the connections that use O-rings.
Sign in to reply
on March 15, 2009
A shop will need to diagnose the a/c system, and they may find that it needs a recharge. If so, then they will inspect the system for leaks, and make the the repairs before recharging the system. Go here to learn more:
Before you take the car in, please read this:
Sign in to reply
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
My 94 will blow hot air to the passenger side, but only luke warm to drivers side while parked, but when driving the ...
My truck only blows hot air. speeds works fine and when i put the ac on i can hear it working but, it still blows hot...
Didn't find what you were looking for?