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How To Clean A Dirty Evaporator Coil?

The evaporator coil is a critical component of the AC system that absorbs heat from the indoor air. It is either installed inside the air handler or connected to the furnace. It should not be left dirty because a dusty evaporator coil does not adequately absorb heat from the air, causing the refrigeration system to malfunction. If the scenario persists, your air conditioner will cease evaporation and transfer into the compressor as a liquid. This is referred to as liquid slugging. That’s why it is absolutely essential to have a contact maintenance specialist like HVAC Alliance Expert or practice evaporator coil cleaning for efficient machine operation and long-lasting performance for years of enjoyment with minimal repairs and maintenance calls.

A dirty evaporator coil on an air conditioner reduces heat transfer, deteriorates cooling capabilities, increases BTU consumption, resulting in higher energy bills, inappropriate temperature management and pressure on the system, and finally, system failures, part damage, and shortened operating life. Following the establishment of the need to clean the evaporator coil, the next consideration is how to clean the system and whether it is possible to clean it without removing it from the unit. Follow these evaporator coil cleaner steps to effectively clean the AC Evaporator coil at home.

  • First Step: Turn off the air conditionerEvaporator Coil Cleaning | HVAC Alliance Expert

To begin cleaning the coils, turn off the thermostat and system. When cleaning, this is the safest course of action you can take. Usually, you should turn the machine off about an hour before cleaning. It is preferable to do cleaning routines in the early morning or late evening in the summer so that it may be used when the sun is at its hottest. These days, thermostats from just about any manufacturer can toggle between heating and cooling. Pick the ones that best suit your needs.

  • Second Step: Access the evaporator coil by opening the front panel. 

Use a sturdy and dependable screwdriver to loosen the panel screws. There are knobs and twist levers on certain panels. When opening the coil, maintain one hand on the panel for balance and security. Extra caution should be exercised while using the aluminum foil tape with some panels to seal off air leaks. After cleaning the coil, the furnace’s panel must be sealed. Taping windows and doors with aluminum foil can help seal them so that air doesn’t leak out, heat doesn’t escape, and noise doesn’t “whistle” through the gaps. Several different evaporator coil configurations are commercially available, including the more common N and A shapes.

  • Third Step: Clean the fins with a no-rinse Coil Cleaner.

Cleaning evaporator coils with a foaming coil cleaner are the easiest and most effective method. It’s simple to use and doesn’t require any special preparation or cleanup afterward. It is wise to check the list of ingredients and compounds to prevent potentially dangerous chemicals. You and your loved ones could be put in harm’s way by these toxins. Apply a coating cleanser in the typical amount to the evaporator coil and spray. Foaming up, the solution immediately begins dissolving the sludge and oil. The liquid starts to run down the drain pan as the foam level drops. When applying the second coat, give the cleaner fifteen to twenty minutes to evaporate. Compressed air can be used to remove pet hair from the evaporator coil before cleaning it. Compressors work best when the air is blown in the opposite direction of the typical airflow, from clean to unclean.

  • Fourth Step: Clean the Coil of any Persistent Debris

Even after multiple cleaning applications, stubborn dirt may adhere to the evaporator coil. Soft, delicate bristles on a brush will do the trick for cleaning. Look around until you find a brush with the correct size and softness to clean the fins without scratching. Brushes with particularly stiff bristles or cables should be avoided. Instead of scrubbing, consider gently brushing the debris off the coil. A coil cleaning brush is useful for scrubbing dust, dirt, and debris from hard-to-reach areas. Furthermore, brushes might be useful when using liquid and similar substances to thoroughly clean every part of the evaporator coils.

  • Fifth Step: turn on the air conditioning and make any last adjustments.Evaporator Coil Cleaner | HVAC Alliance Expert

Finishing the cleaning process is just as important as the beginning. A good starting point is eliminating all potential for air leakage and heat loss. Verify that all screws are securely fastened and that all crevices have been thoroughly cleaned of any lingering dust or dirt. After double-checking everything, replace the cabinet’s inside cover and access panel. Avoid costly air leaks and save money on utilities by sealing cracks and openings using aluminum foil tape.

If your evaporator coils are highly filthy, it is necessary to thoroughly clean them. Strong chemicals and professional assistance are required. For dirty coils, assess the problem and contact HVAC Alliance Expert services because you may need to employ a steam cleaner or force washer. Heavy-duty cleaning may also necessitate the replacement of the coil, cutting and re-attachment of refrigerant channels, refilling the refrigerant system, replacing the vacuum, and so on. These complex approaches require professional assistance. Consult with an HVAC Alliance Expert in your area. They will diagnose the issue and clean your evaporator coil using cutting-edge instruments and techniques.

If you have problems with any of your HVAC equipment, don’t hesitate to hire and work with us at HVAC Alliance Expert. Call our team or fill out the form for fast booking of an appointment


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