Nowadays most houses have a central air conditioning system linking air ducting to move conditioned indoor air throughout the house. Gradually, the air system and the linking air ducting will collect dust and other contaminants, which can trigger the blood circulation of unclean and contaminated indoor air through your house. Out-of-sight and out-of-mind health products that we do not believe much about are filthy air system and a duct which could be the unhealthiest product in our house.
"Energy is consumed by HVAC systems through a number of processes. Air is typically distributed through the ductwork via an electrically‐powered fan. Cooling coils remove heat from the air. Heating coils add heat to the air. Through normal HVAC usage, particulates in the air slowlycollects on the surfaces of various HVAC components, resulting in a gradual loss of energy efficiency. Some loss of efficiency via a single dirty component may be minor. When the loss through each component is added up, however, the impact could be considerable. Generally, the greater the buildup, the greater the energy loss. Removal of the buildup of particulate on HVAC components restores energy performance to the system." 
Nowadays most homes have a central air system with connecting air ducting to move conditioned indoor air throughout the home. Over time, the air system and the connecting air ducting will accumulate dust and other contaminates, which can cause circulation of dirty and polluted indoor air through your home. Out-of-sight and out-of-mind health items that we don’t think much about are dirty air system and air ducts which could be the unhealthiest item in our home.
"This a very professional company that came the next day after being contacted late in the day prior. The two guys that came to the door that did the work were well dressed and very courteous. They cleaned my diver vent and it works perfectly. I have their literature and will be calling them when I m ready for duct cleaning. Nice equipment too! Thanks for the good work. Nice not to have scroungy guys showing up at the door. "
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