These are companies who are more interested in getting your money, through misleading advertisements or “bait and switch” mailers than actually doing the work properly and improving your indoor air. The very worse thing you can do is to hire a company that may actually create more of an indoor air problem for you and your family due to improper cleaning or use of inferior air duct cleaning vacuums with no more vacuum power than a large Wet/Dry vacuum with a rotating brush attached at the end of the hose, or use a “carpet cleaner” who is not properly licensed or certified to clean air systems. Be especially suspicious of companies advertising low one price duct cleaning service, it’s like providing a one price to paint the exterior of your home whether it be 1 story or several stories high.
Make sure that the company has the proper equipment and enough HEPA filtered vacuum power (2,000 CFMs or more), to properly clean your air ducts. Be weary of companies that use small vacuum units that have a small rotating brush on the end of a small vacuum hose with a typical airflow of 150 to 300 cfm or less. Proper air duct cleaning vacuums are negative air machines with 2,000 CFMs have 8 inch to 14 inch or larger, vacuum hoses to capture large quantities of dust and debris.
I have used Waychoff a couple of times, they have always been prompt and very pleasant to deal with. However, my latest experience is the reason for this review. My a/c went out on Monday and, as usual, I called Waychoff. Wendall came to look at it and fix it. He told me the fan motor needed to be replaced, but I decided to wait. He was truly a joy to have in my house to fix my a/c. Well, on Tuesday, it went out again. As Wendall was off on Tuesday, I decided to wait until today for the unit to be repaired. Once again, he was a joy to have around - he is extremely personable, quick and efficient. Even the dogs loved him! Wendall is an asset to Waychoff!
Use a company that will provide a fair quote, based on the service that they will provide. Be weary of companies that advertise one price for a whole house. Think about it, would a painter paint any size house for one low price? Neither can an air duct cleaner PROPERLY clean the WHOLE house, no matter how many systems or air vents are in the home for one low price.
My heat pump unit was not working, though the handler and thermostat were fine. I did a little testing myself and determined that the low pressure switch was triggered, then called Waychoff's without having told them anything about what I did (sort of a test to see if they'd try to sell me something I didn't need). Eric showed up 30 minutes early to the appointment (a pleasant surprise), and immediately got to work. Within 10 minutes he told me I had no coolant which triggered the low pressure sensor which meant there was a leak. He inspected the handler inside and then told me he needed to do a nitrogen pressure test to find the leak. 10 minutes after that he showed me the hissing leak in the heat pump, proving that there was in fact a leak. He brazed/welded it shut, re-tested to confirm, then filled the unit with coolant. 60 minutes later I'm back in business and my heat pump is working great. I liked that Eric was 100% honest about the issue and how to fix, and didn't try to sell me anything I didn't need. He also worked with me on the coolant charges, since they tend to mark it up quite a bit. Overall a good experience - I'd use them again for sure. They're a little bit pricey, but for the quality, honesty, and knowledge it's worth paying.
Make sure that the company has the proper equipment and enough HEPA filtered vacuum power (2,000 CFMs or more), to properly clean your air ducts. Be weary of companies that use small vacuum units that have a small rotating brush on the end of a small vacuum hose with a typical airflow of 150 to 300 cfm or less. Proper air duct cleaning vacuums are negative air machines with 2,000 CFMs have 8 inch to 14 inch or larger, vacuum hoses to capture large quantities of dust and debris.
With your air system and air ducts in a constant cleaned state, you and those in your family can be in much healthier or at the very least minimize the symptoms experienced when the indoor air system was dirty and contaminated. In addition to improving health related symptoms, good indoor air quality in the home can lead to better breathing for deeper and undisturbed sleep. According to some doctors, improved undisturbed sleep can lead to a healthier life overall. While in some cases poor indoor air quality can be linked to asthma.
"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." 
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