Air Duct Cleaning Energy Savings
According to the EPA, a build-up of .042 inches of dirt on a heating or cooling coil can result in a decrease in an HVAC system efficiency of 21%.
A properly and thoroughly cleaned HVAC system, not just the air ducts, can reduce the costs associated with running your HVAC system and increase the useful life of your air conditioner and furnace. EPA research suggests that cleaning dirty cooling coils, fans and heat exchangers can improve the efficiency of cooling and heating systems and lower the energy costs of running your heating and cooling system.
Because we provide ductwork cleaning to the NADCA standard, we will be cleaning these components with the utmost care. In fact, an American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) study concluded that maintaining HVAC system cleanliness in homes would reduce average operating costs by 10% to 25%.
As members of the National Air Duct Cleaning Association (NADCA), we are committed to superior air vent cleaning. A part of this service includes the components of your furnace that are responsible for ushering in dust, dust mites, pollen, pet dander, and other contaminants into your HVAC system. One of the parts addressed are the furnace coils, which regulate how long the air ventilation unit has to run in order to meet your thermostat setting.
Trust us with all your HVAC needs. We are a Trane® dealer and also service, repair and install all air conditioner and furnace makes and models.
As your system circulates debris, the coil becomes a host area for dirt. A dirty coil has trouble sensing the temperature correctly in the home, which causes your heating and cooling system to run longer.
We clean the coils in order to remove any dust before it is pulled into the ventilation system and in doing so; we enable your coil to sense temperature more effectively. This will help your system to operate at its maximum design efficiency, saving you money on your heating bill. Fouled Coils:
- Increases Static Pressure
- Creates excessive fan, chiller pump, and boiler cycling
- Contaminate occupied spaces
Will Having My Ducts Cleaned Save Energy?
A thorough cleaning can yield long-term energy savings. Bob Baker and Ross Montgomery, who study air quality and energy efficiency for the American Society of Heating, Refrigerating and Air-Conditioning Engineers, say their research shows dirty coils and blowers in commercial buildings can cut efficiency by as much as 40 percent.
According to Air Duct Cleaning Specialists (ASCS) Tom Harrington & Grant Shallcross, a typical modern building’s air conditioning system accounts for up to 50% of its total energy consumption. Improvements in the operating efficiency of key components such as heat exchange coils will result in substantial energy cost savings.
How Do "Dirty Ducts" Affect My HVAC System?
In each HVAC system, there is part that is called the cooling coil. With air “constantly passing over the cooling coil fin surfaces…various contaminants such as dust, microorganisms, and hydrocarbon fumes, etc. pass through the filters.” Filters remove only the largest particulates and, in fact, can be a considerable source of biological contamination since they become increasingly colonized by fungi, which give off spores, volatile organic compounds and other particles. Once the cooling coil has accumulated debris among its fins, it restricts the system’s “airflow, lowers heat exchange efficiency, and causes excessive equipment cycling.”
There is the obvious cost implication where the power costs associated with the system drift well outside design parameters as heat exchange efficiency is progressively diminished. The efficiency losses associated with poor heat exchange through bio-fouled surfaces are reduce air passage through increasingly filled fin gaps and higher fan speeds using more energy than necessary to control temperatures.
In fouled coils, the air flowing through the coil is not reduced in temperature adequately enough to allow the system to cool the building efficiently. Due to the inadequate cooling of the air, the building is not reaching the required temperature and compressors run continuously in order to compensate for the poor temperature transfer. In a system where the air is cooling the building efficiently, the compressors will cycle in and out. Poor heat transfer results in inefficient energy usage and unnecessarily increased energy costs.
By implementing a regular HVAC system that addressed contaminant build-up, you can reduce the the energy costs associated with heating and/or cooling your home.
Further Research & Source Documents