Cleaning the air conditioner is one of the most important duties in automobile care and maintenance. Knowing how to clean a car’s evaporator without removing it is one aspect of this. Dust, filth, grime, and grease will accumulate in the automobile evaporator if it is not cleaned, lowering the system’s efficiency.

While hiring specialists is an option, not everyone has the time or money to do it every three months. Understanding this, we’ve put up a complete guide that includes all of the tools you’ll need as well as all of the actions you’ll need to follow to clean the evaporator on your own.

In general, you’ll need to use an automobile AC evaporator cleaning and follow these seven easy steps:

  1. Locate the evaporator core and the air conditioning system.
  2. Clear a path to the evaporator core and put on safety gear.
  3. Examine the AC evaporator core to see whether it merely needs cleaning.
  4. Allow an evap core cleanser to rest for 30 minutes.
  5. Using a towel or rag, rinse the treated AC evaporator core.
  6. Remove all excess moisture and use a fan to dry the evaporator core.
  7. Restore the air conditioning system to its previous configuration.

But there’s more to learn! As you read, you will discover many more useful hints. So read on till the end of this post.

Material required To Clean car ac Evaporator

  • A screwdriver and a basic set of hand tools
  • A set of protective gloves, goggles, and a face mask are required.
  • A automobile air conditioner evaporator cleaner
  • A rag or soft cloth
  • A garden hose or a spray bottle filled with clean water
  • A microfiber cloth
  • A portable electric fan

How to Select The Car AC Evaporator Cleaner?

There are so many different automobile AC evaporator cleaners on the market that it might be tough to choose one. Indeed, many automobile owners are overwhelmed and perplexed by the sheer amount of alternatives provided by various manufacturers.

As a result, to alleviate your stress while selecting a car AC evaporator cleaner for your vehicle and air conditioning system, we have compiled a list of the main criteria to consider throughout your decision process.

Consider how the cleaning solution is packaged and distributed first. There are two primary varieties that you may find on the market:

Spray bottles with a trigger and nozzle are referred to as aerosol spray bottles. They are more user-friendly, providing ease and comfort throughout applications. The finest ones have an ergonomic design and are inexpensive. You should be able to keep them in your car at all times. They cannot, however, pack a large amount of the solution. As a result, after three applications, you will normally need to receive fresh ones.
Gallon containers: These are sold in jugs, as the name implies. 1-gallon containers are the most prevalent. They are less expensive. However, the application is more demanding as a result. You may also need to dilute them ahead of time.

The formula is another crucial thing to consider. Biodegradable and environmentally friendly materials are excellent choices. They should not include strong chemicals that might harm your system. The scent isn’t required, but a good cleaning should be able to get rid of any unpleasant odors in the unit.

You should also evaluate the brand and pricing of the product you are purchasing. Well-known brands are usually preferred since they provide peace of mind and guarantees. When it comes to pricing, the most important thing to remember is NOT overspend. You do not have to empty your bank account. There are several conventional, high-performance cleaners that are reasonably priced.

Make an attempt to get a decent cleaning for your car’s evaporator core. After all, you’ll be rewarded with an energy-efficient and cooling ride on every trip.

When you have completed all of the preceding stages, you are ready to proceed.

clean car ac evaporator

Easy Steps to Cleaning a Car’s AC Evaporator Without Having to Remove It

Locate the evaporator core and the air conditioning system.

To begin, you must find your vehicle’s air conditioning system. It should be beneath the hood and near the firewall that separates the engine from the passenger compartment. Locate the evaporator core from there. It will be housed in a plastic box that pops out from the firewall. The heating blower motor is connected to it.

Clear a path to the evaporator core and don safety gear.

Remove any resistor units or blower fans that are located on top or on the side of the heater box and are restricting access to the evaporator core with a screwdriver and other simple hand tools. Put on a pair of protective gloves once you’ve located the location you’ll be working in and determined the best access route. If you like, you may also put on goggles and a face mask.

Examine the AC evaporator core to see whether it merely needs cleaning.

Examine the evaporator core now. If you discover any evidence of significant damage, you may need to seek repairs or replacements rather than just cleaning. In that situation, contact a specialist. Otherwise, go to the next step.

Apply an evap core cleaning and let it set for 30 minutes.

This is when the automobile evaporator cleaner comes into play. Spray it through the evaporator core. Do this thoroughly, making certain that no areas are left unattended. Allow the cleaner to rest for 30 minutes to finish disinfecting.

The majority of cleansers on the market are foam-based. When the foam has dissipated and just liquid remains, it is time to go on to the next stage. When the liquid had finished its task, it would drain through the perforations.

Using a towel or rag, rinse the treated AC evaporator core.

You can now rinse the treated area with water and a soft towel or rag. It is beneficial to use a water-filled spray bottle or a garden hose. Make sure that you simply spray lightly. Avoid using high-pressure streams.

Otherwise, you risk oversaturating the unit and causing damage to its components. Take your time and properly rinse everything. Only proceed if you are certain that no remnants remain.

Using a fan evap-core-cleaner, remove any excess moisture and dry the evaporator core.

Wipe away any remaining wetness. Blot dry the affected area. Use a clean microfiber cloth or towel for this. Then, using a portable, electric dan, blow dry it. However, do not use the fan in place of another heat source, such as a hairdryer. The heat may devastate your system. Remember, it’s better to be safe than sorry!

Restore the air conditioning system to its previous configuration.

This procedure’s cleaning phase is complete. You can replace any of the items you removed previously, such as the resistor unit and blower fan. In essence, you are reverting the machine to its original configuration at this point.


That brings us to the end of our essay on how to clean a car AC evaporator without removing it. You are now unquestionably a master in cleaning automobile AC evaporators!

Hopefully, that was simple to understand and useful. You can also easily clean the car navigation system. If you used our method to clean your vehicle’s AC evaporator, please share your experience in the comments.

Otherwise, please leave a comment if you have any more views or questions on this issue. We are always delighted to get reader feedback. As a result, do not be hesitant!

You are also invited to share what you have read with your friends, family, or anyone else you believe may benefit from this content.



Chris Miller

Chris Miller is an auto journalist who specializes in reviewing new cars and providing helpful advice on family vehicles. He has a passion for cars and enjoys sharing his knowledge and expertise with others.

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