Clean Evaporator and Condenser Coils to Increase HVAC Efficiency

Posted by Barry Greenberg on Tue, May 11, 2021 @ 11:05 AM



Like most of us, I'm looking forward to getting out more, seeing friends and family and resuming a normal lifestyle. We're finally back at our conventional work place, or at schools and visiting the shopping mall. Let's all stay safe as we return to healthy routines and protocols.

Meteorologists are predicting that summer 2021 will be hotter than average for much of the United States. - That means it's time we crank up our cooling systems, that may have been idle since last season. 

HVAC Coils 1


In order to maintain maximum efficiency and cost effectiveness throughout the season, its imperative to clean both the evaporator coils and condenser coils. Dirty coils can increase energy use by more than 30%. Additionally, dirty coils can make the compressor work harder and lose up to 30% of cooling capacity. Ideally, air conditioning maintenance should be done twice per year.

The evaporator coils, as pictured, are situated within the building. They are subject to grease and dust, depending upon the environment.

Maintenance is simple using a foaming coil cleaner that is also self-rinsing. Foaming cleaners are preferable for these tasks, to minimize puddling  & splashing.


It's wise to choose a product containing natural enzymes for continuous cleaning and the breakdown of organic soil contaminants. Using a product containing bio-enzymatic ingredients will remove stains and odors associated with mold and fungus.

The solution may be flushed off with water, or left on fins, without rinsing. This will help maintain optimum unit efficiency. Additionally, it will deodorize as it cleans, leaving the area with a fresh, clean fragrance.

Avoid acid based products because of the hazards associated.

Don't forget your condensate drain pans. They can clog up and cause overflows. Spraying the coil cleaner onto the pan and into the drain area will provide the measure of safety necessary.


Chemex Foaming Coil Cleaner is such a product. You can find technical data and more information here:


Topics: condensate drain pan treatment, clean evaporator and condenser A/C coils