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.
Locally we service the cities of Jacksonville, Jacksonville Beach, Atlantic Beach, Neptune Beach, Orange Park, Fleming Island, Green Cove Springs, Keystone Heights, Penny Farms, St. Augustine, St. Augustine Beach, Ponte Vedra Beach, Nocatee, Hastings, Fernandina Beach, Callahan, and Hillard all located within the counties of Clay, Duval, Nassua, and St. Johns. Call for Free Estimates at (904) 245-1594
We highly recommend using a Florida Certified Mechanical Contractor to inspect and clean your air system. As a certified Mechanical Contractor the technicians, are properly trained to decontaminate your air system and not only can they properly clean your air system due to their extensive knowledge and experience with air systems and indoor air quality, but they can also alert you of any additional areas that might need attention to improve upon your indoor air quality such as; filtration considerations, damage, structural air flow problems, or inefficiencies of your present system. In more humid and hot climates, you will want to have your air systems inspected and service, at least every season, to assure that your air system and air ducts is clean of debris providing good indoor air quality.
We highly recommend using a Florida Certified Mechanical Contractor to inspect and clean your air system. As a certified Mechanical Contractor the technicians, are properly trained to decontaminate your air system and not only can they properly clean your air system due to their extensive knowledge and experience with air systems and indoor air quality, but they can also alert you of any additional areas that might need attention to improve upon your indoor air quality such as; filtration considerations, damage, structural air flow problems, or inefficiencies of your present system. In more humid and hot climates, you will want to have your air systems inspected and service, at least every season, to assure that your air system and air ducts is clean of debris providing good indoor air quality.
"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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