The amount of time air duct cleaning takes can depend on how extensive your duct system is, how old your air ducts are, and whether they have ever been cleaned. On average, expect a standard size home (between 2,000 and 3,000 square feet) to take 2-5 hours for one to two technicians to clean. Here are the proper protocol and equipment you should expect from a professional duct cleaning service, as recommended by the Environmental Protection Agency:
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A comprehensive duct cleaning takes between 3-5 hours, depending upon the size of your house (and much longer for commercial applications). Most companies, especially the ones that have a price that seems to be “to good to be true”, are in and out of your house in less than an hour and may try to upsell you based on “mold” they allegedly find in your air handler.
Over time, these contaminates build up inside your ductwork, making your system a breeding ground for mold spores, bacteria, fungus, mildew, and other microbes, which are then re-circulated through your home, impacting the health and comfort of your family. Those who suffer from allergies, asthma or other respiratory ailments, especially children and the elderly, are vulnerable to the effects of indoor air pollution.
How typically should you have your clothing dryer vent cleaned? It relies on simply just how much laundry you do, if you have kids, if you have animals, if your clothing dryer vent exhaust pipe is short, long, or rising through the roofing of your home. As a standard, and recommended by the Insurance protection Company, you have to have the vent cleaned a minimum of every 2 years.

We have a small older home that has 5 same floor registers. We recently put in a new furnace and they suggested we get the ducts blown out. One seems to be particularly blocked. I also own the house next door where we put in the identical furnace. I might want to do that house as well, depending on the price of the first house. Thank you very much.
We use Rotobrush aiR+ professional air duct cleaning equipment (rotary brush and vacuum) and believe very strongly that this is the best equipment to clean the air ducts in your home.  Our equipment features a camera system so that if you would like, you can see what we are doing as we are doing it.  The Rotobrush aiR+ is designed specifically to handle the soft, flexible ducts in homes in the South. We are able to clean air ducts by inserting the rotating brush into the duct. With the brush rotating at 450 rpm, it loosens any debris that may be stuck inside. While the brush is scrubbing the walls, the vacuum sucks up the debris, leaving your air ducts clean.
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