Q: Air conditioning started blowing hot air

asked by on

The air conditioning was working fine. Then is suddenly started blowing hot air. Do I need a new air conditioner compressor?

There are many components that allow the air conditioner in your Mercedes to blow ice cold on days when you need it the most, but without a bit more information it is difficult to determine if the A/C compressor is in need of replacement. The A/C will blow hot if the system has developed a leak, such as when a rock or road debris makes its way beyond the grill on your bumper, causing damage to the A/C condenser. It is also possible that one of the blend doors that allow you to switch from hot to cold air has failed and is only providing hot air. To be certain what is causing your A/C to emit only hot air, it may be time to enlist the assistance of a certified mechanic. They will be able to determine why your A/C is not operating and perform the necessary repairs to keep the car cool on those hot days.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Air conditioning started blowing hot air

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: Mercedes 2006 R350 not starting.the vehicle was not started for 20 days.road side assistance visited and they said battery is good

Hello, thank you for writing in. In addition to checking the battery, you will want to make sure the battery cables are clean, dry, and tight. When the cables or ground connections are loose or corroded, they are likely going...

Q: No start

A large voltage drop is going to be a bad cable or connections either at battery or starter and engine grounds. Try doing a voltage drop for the positive and negative cables and also try using a jump to the...

Q: Air conditioner blows hot air. 1995 Mercedes-Benz E300

Hi there, thanks for writing in about your 1995 Mercedes-Benz E550. This could be a variety of issues, such as no pressure or low refrigerant levels, a bad compressor clutch, or a compressor not engaging correctly. Check to see if the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...