Skip the auto shop - Our mechanics make house calls

Q: Tried adding refrigerant and it wouldn't take any

asked by on

When I turn it on heat but not max a/c it blows heat no cold air at all when I tried adding refrigerant the gauge didn't move I don't know what's wrong.

My car has 2000 miles.
My car has an automatic transmission.

Hello. Air conditioning systems on newer cars, trucks, and SUV’s are incredibly complex. However, the issue you’re describing may be caused by a high pressure or low pressure hose that is damaged or leaking. When the hose is clogged or obstructed, it can cause problems in filling refrigerant. The issue can also be caused by the filler caps on the low pressure side (which is where you should be filling refrigerant). If you have access to a AC manifold tester, hook that up and test the pressure inside the unit and try to find a leak in the lines. If you don’t, contact one of YourMechanic’s local technicians and they can replace the high pressure hose or low pressure hose for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Air conditioning only blows hot air after having a blown and replaced fuse

Hi and thanks for your question. In the A/C circuit to the compressor clutch from the switch, there is an inline fuse. Check continuity from the switch to the clutch on the compressor. If you have high resistance or if...

Q: car battery has to be jumped off every few days

Hi there. In most instances, a battery that always drains is caused by an alternator that is broken, or another charging system component that has been damaged. It is best to have a professional mechanic [complete a battery won't hold...

Q: Brakes don't work very well when it's cold

You have two different issues here. The slow crank may be that the battery is getting weak. It may need to be replaced or the terminals cleaned. The other issue of the high idle and braking issue is probably due...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.