Coil Cleaning

An air conditioning system is comprised of two coils - The indoor coil, commonly referred to as the evaporator coil or the cold coil and the condenser coil, commonly referred to as the outdoor coil.

Quite simply, as air flows and contaminants move over the coils, the coils gradually get dirty and as a result, become less efficient. Most notably, without proper maintenance, the evaporator coil and its condensate pan can serve as a breeding ground for mold and a whole host of biocontaminants – contributing factors to a prevalent state of poor indoor air quality.

Not only that, a dirt and, inefficient coil cannot supply proper heat transfer and will result in greater energy consumption overall and the bottom line implications of this are attention getting:

  • Equipment operating with dirty coils can use up to 37% more energy than their clean coiled counterparts.
  • An inefficient and dirty system’s cooling capacity can be negatively impacted by as much as 30%.
  • Dirty coils can also result in increased operating pressure and temperatures that in turn, start to degrade the compressor’s lubricant, causing serious problems, even a failed compressor.
According to NADCA’s ACR 2006: “It is highly recommended that all portions of each coil assembly be cleaned.

Both upstream and downstream sides of each coil section must be accessed for cleaning. Where limited access is provided between close proximity or zero-tolerance heating coils in an AHU, cleaning may require removal and/or replacement.”

As members of NADCA, CORE recommends the implementation of well planned coil cleaning program to avert the costs and inconvenience associated with equipment failure and poor indoor air quality.

It is generally accepted that coil cleaning should take place at least four times a year, but this is a baseline, it depends upon the facilities unique situation and layout.

Lastly, as a precautionary measure to make routine maintenance faster and easier to complete in a comprehensive manner, CORE recommends installing easy to open panels to enable smoother access to the coils themselves.


CORE is a recognized, domestic leader in the HVAC market that proactively employs sophisticated technologies and best in class process and certification to address your IAQ problems head-on. More about CORE

Contact Us

Core Mechanical, Inc.
7150 N. Park Drive
Suite 400
Pennsauken, NJ 08109

Phone: 856.665.0636
Fax: 856.488.2241

The Importance of Working With a State Licensed Air Conditioning Contractorstate-licensed-air-conditioning-contractor

To deal with the problems arising from slowly deteriorating IAQ, commercial and industrial facilities need to ensure that the AC ducts are cleaned and serviced regularly and that their equipment has been optimized in accordance with ASHRAE standards.

The reality is that with so much at stake, it does not pay to work with unlicensed contractors who often lack the education, hands-on training and cutting edge technologies granted by state licensing.

As a certified member in good standing of the Indoor Air Quality Association (IAQA), Core is an industry leading HVAC service provider and offers varied services to improve ventilation and system optimization. In addition, Core offers repair, maintenance and often total system replacements to industrial and commercial facilities.

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