AC Evaporator Replacement at your home or office

Our certified mechanics come to you · Backed by our 12-month, 12,000-mile warranty · Get a fair and transparent estimate upfront


AC Evaporator Replacement Service

What is the AC Evaporator all about?

An AC system has many components: compressor, condenser, receiver dryer, evaporator, and hoses. The AC evaporator is responsible for producing cold air. The AC system has a gas or liquid substance called refrigerant (R-12 in older cars, R-134a in 1995 and newer cars) that flows throughout the system. The cold refrigerant flows through the evaporator. The AC blower motor blows air across the evaporator absorbing all the coldness from the refrigerant and producing the cold air that comes out of the vents.

There are two ways for an AC evaporator to fail: it can leak refrigerant or prevent air from circulating due to blockage. The evaporator has seals and tubes both of which can start leaking with normal wear and tear. Because there is no way to replace these tubes and seals, you will need a new evaporator.

Keep in mind:

In older cars, it is possible that the outside surface of the evaporator becomes filled with debris. Consequently, air will not be able to easily blow through it and you’ll notice low air from the AC vents. Although it is possible to attempt to clean this surface, it rarely solves the problem completely. This problem is not very common in newer cars (1995 or newer) because those cars now include a cabin air filter. A cabin air filter usually filters out the debris from outside before it reaches the evaporator.

How it's done:

  • Use gauges to measure the system pressures.
  • Inspect the entire system for leaks.
  • Inspect the evaporator and cabin air filter for airflow restrictions.
  • If evaporator is found faulty, remove all of the refrigerant.
  • Remove and replace the evaporator.
  • Evacuate and recharge the AC system.
  • Leak check the system for any leaks.
  • Check for proper operation of the AC system.

Our recommendation:

The AC system is a sealed unit. It is not something you will inspect or service unless you notice a change. If you notice a change in the temperature of the air through the AC vents (not as cold as it should be), schedule an inspection.

What common symptoms indicate you may need to replace the AC Evaporator?

  • Air conditioning is not as cold as it should be.
  • Air conditioner is blowing warm/hot air.
  • Air conditioning is not working.
  • Amount of air flowing through the AC vent is low.

How important is this service?

In addition to your comfort, air conditioning systems add value to your vehicle. You should keep your AC fully operational. In some systems, the hot and cold air are blended to achieve the desired temperature setting. In these cases, when the AC system fails, you will not only NOT get any cold air, but the entire temperature regulation is thrown off.

Fast and easy AC Evaporator Replacement service at your home or office.


Recent articles & questions

A Buyer’s Guide to the 2012 Toyota Prius
Since Since they introduced the Prius, the very first mass-market hybrid, Toyota has been leading the auto industry in hybrid vehicles, and continues to do so in 2012. For this model year, the Prius saw some exciting new options, including...
P0150 OBD-II Trouble Code: O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)
P0150 P0150 code definition O2 Sensor Circuit Malfunction (Bank 2 Sensor 1) What the P0150 code means P0150 is the OBD-II generic code indicating the O2 sensor 1 for bank 2 fails to meet the minimum or maximum voltage limits...
P0312 OBD-II Trouble Code: Cylinder 12 Misfire Detected
P0312 means cylinder 12 has misfired due to an inappropriate RPM, caused by faulty valves, fuel injectors, ignition timing, or crankshaft sensor.

Rough Idle in park and neutral runs smooth in gear

You will need to have the engine checked to see if you have codes to assist with diagnosis before looking at getting the ECM reprogrammed for the rough idle at a dealer. I would suggest having a certified technician diagnose...

Loud bang and engine shuts off

Hello. If the dealership replaced the head, belt, and associated components, the vehicle should be safe to drive. Water pump failures are actually a common occurrence on that vehicle, due to the original water pump pulleys being manufactured out of...

My car has crank and no start issues.

There is one thing I don't think you have listed or have checked. That would be injector pulse. You can have fuel pressure but without injector pulse from the ECU, the injectors will not open and the cylinders will not...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com