What is NADCA?

How can some companies meet NADCA standards and leave your HVAC filthy?

What is an "air handling unit"?

What standards of certification and training should technicians have?

Why is suction power and negative pressure necessary?

Why is air conditioning coil cleaning vital?

Should I choose Monster Vac to clean my HVAC system?

How can Monster Vac reduce my energy bills?

What equipment must be used?

Is visual proof needed before I write a check?

Why is air conditioning coil cleaning vital?

Most people know that they need to change the filters on their air conditioning system on an ongoing basis. Changing your filters could be a waste of time if you do not disassemble the sheet metal cover of your furnace, remove the evaporator coil and clean it.

The US Department of Energy recommends you inspect your coil a minimum of once per year and keep it clean. When your system is in operation, air passes through the filter and over the coil. Some people say your coil looks something like a radiator; it’s a network of coils. Not even the best filters can stop all the dust and particles from reaching your evaporative coil. Over time, these particles and dust adhere to your coils surface. It does not take a lot to begin to reduce your coils, and thus your systems efficiency. One hundredth of an inch accumulation can result in a 20% decrease in your system’s efficiency.

As debris builds up on your coil it becomes clogged. This in turn makes your system work harder using more energy and increasing the pressure on the system. This increased pressure fosters breakdowns in your system such as your pump. The buildup also makes a wonderful medium to grow molds and bacteria…and if it’s in your system it will end up in your lungs.
Very few duct companies disassemble the cabinet and clean your coil. Very few even have the equipment to do it. Most of those HVAC companies that do address the coil just wipe off the surface.

NADCA (National Airduct Cleaners Association) standard 6.3 reads:

All portions of the coil assembly must be cleaned. Both upstream and downstream sides of the coil shall be assessed for cleaning.

Cleaning of the coil requires multiple steps including compressed air and washing. The companies that are NADCA certified know that the evaporator coil must be cleaned in order for the system to be considered clean. In fact they must know it to pass the certification test. NADCA standard 6.3 also states the following:

"Coils with microbial contamination shall be wet process cleaned."

If NADCA certified air duct cleaning companies must know this standard in order to pass the certification test, why are they choosing not to clean to NADCA standards?

Monster Vac uses an 8 step evaporator coil pressurized wet cleaning process that a HVAC contractor will charge $450-to $800-more than Monster Vac charges to clean your entire system.

Demand that your AC Evaporator Coil be cleaned as part of your HVAC system cleaning service. (Back to top of page)

The level of some hazardous
pollutants in indoor air has
been found to be up to 70 times
greater than in outdoor air.

(U.S. Environmental Protection Agency)