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.
At Waychoff’s Air Conditioning, we utilize the industry’s most sophisticated equipment when performing our Jacksonville air conditioning duct cleaning service in your home. The Abatement Technologies’ patented Hepa-Aire system lets your air conditioning system perform to its optimal standards. In addition, it drastically reduces the number of pollutants that gather in your home’s ductwork system. After a thorough air duct cleaning in Jacksonville, FL from Waychoff’s, you’ll be breathing clean and healthy air. Call us today for an estimate for duct cleaning.
My A/C stopped working on Sunday afternoon, the repair tech was there within the hour. He was very friendly and explained the problem and the cost. I decided it was time to replace the system which was ten years old. The estimator was there in no time, looked over my home and the system and gave us several options. We decided on a system, and it was installed and working at 2:30 on Monday. Highly recommend Waychoff's!
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.

"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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