Air Duct Cleaning, Furnace Filters and Air Quality Q&A
We know so little – can you help?
Is duct cleaning really a help in home air quality? Quote was for $325 for a medium two-story house.
Any information on a company called (name withheld) out of Georgia. The sale rep makes claims for a CAP100 inline filtration system. Efficiency of up to 97% at 6 microns (up to 97% ???). It pictures a 1 inch pre filter with a 5 inch Final filter (BioPleat tm). Is this just a fancy looking furnace filter that costs a lot or is it really better than the 3M 3-month 1-inch filter (about $10.00) or some other such regular filter?
What effect do these larger 5-6 inch filters have on the blower motor of the furnace? Any problems there?
Rob B – Bangor
Answer: Hi Ron,
There are a few things you need to consider before deciding to have your ductwork cleaned.
First, you need to determine what kind of material your ducting system is made of. If it is not encapsulated there is no point in cleaning it. The reason is that you will stir up the insulation because it is not sealed. If you feel the inside of the ductwork and it feels soft you are feeling the insulation and it is probably not encapsulated so you should not have them cleaned. The reason for this is most companies will come in with rotary brushes to scrape and remove any of the dirt and debris that is clinging to the ducting. If the ductwork is not encapsulated the brushes will stir up the insulation and you will be worse off than before you started. If your ducting is encapsulated the inside will feel hard.
Next and most important, you should only consider duct-cleaning companies that are N.A.D.C.A. certified. This is the National Air Duct Cleaners Association. To be a member they will need to pass certain tests and the people doing the work are specially trained and cannot perform any work with the company until they have passed the special courses. N.A.D.C.A. companies will insure they are serious about the work and not in it for the short run.
Of course, I always recommend getting references from previous customers so you can call them and talk to them if you wish. Also, it is always worth it to call the Better Business Bureau to see if there are any recent complaints against the company.
Normally, you only need to clean your ductwork every 5 years or so. If they are dirty cleaning the ductwork will be very helpful.
Please feel free to contact me to discuss any of the products, or furnace filters we offer from our website.