Make certain that the business has the correct devices and sufficient HEPA filtered vacuum power (2,000 CFMs or more), to appropriately clean your duct. Be tired of business that utilizes little vacuum systems that have a little turning brush on completion of a little vacuum hose with a normal air flow of 150 to 300 cfm or less. Appropriate duct cleaning vacuums are damaging air devices with 2,000 CFMs have 8 inches to 14 inches or bigger, vacuum hoses to record big amounts of dust and particles.
"Our electric bill has dropped around seventy dollars a month and that is with the a/c set at 76 degrees. I know it will be lower next summer since I am now taking advantage of the energy start setting the thermostat has. Also our son's coughing at night has stopped and I think it is due in part to the clean air effects filtration system that we got when we purchased the system. We are very happy with our new A/C system. Also we got a refund from Clay electric for having a 17 SEER system and we will get to write some off on our taxed next year."
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.
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"So My A.C. suddenly went belly up and I needed a total brand new unit inside and out. So a little background on myself. I'm an engineer, so I know a little bit about A.C. and how they work. I'm by no means an expert, but it does allow me to detect if the A.C. guy knows his stuff, especially if they don't know what I do. 😉 And I'm happy to say, these guys do. One of the things that helped me chose them is that they brought up the importance of controlling humidity. None of the other contractors I spoke to, mentioned that. I also appreciate the fact that he didn't try to "up sell" me and get me to buy things I didn't need. He was on time, honest and forth coming about what I needed and what I didn't. When the workers came, they were on time, very professional and very CLEAN. After they left, I couldn't tell they had been there. Highly recommended this service."