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How often you need to clean your air ducts depends on your scenario. If you or somebody in the house has asthma or is acutely allergic to certain air-borne products or pollen, routine duct cleaning may be helpful. The Epa doesn't have an official position on the necessity of air duct cleaning unless the ducts have actually been infected by rodents, insects or mold, or you understand particles blowing out through the vents.
The National Air Duct Cleaners Association (NADCA) recommends having air ducts cleaned every 3 to 5 years. Be cautious with companies that offer "entire home duct cleansing," urges the NADCA. Research It Here may be utilizing deceitful methods to upsell you once they begin. Before any work starts, constantly clarify in writing what the task requires and what the cost will be.
I purchased a Living Social Discount coupon for duct and dryer vent cleansing for $49, for services they generally charge $350 for. I don't truly know the quality of the work they did - I do not see any difference in air quality, however it wasn't that bad to start with, so it's possible that they did a fine task in concerns to that.
My quibble is truly with 2 things - they tried to give me a difficult upsell for over $750 of extra services, even informing me that doing the work noted on the discount coupon alone would make whatever worse without all this additional stuff (ie, stimulating dust and dirt that my a/c would then blow into living areas without these extra services to remove it).
If what they said is true, this need to've been interacted in advance somehow. I had them only do the work listed on the discount coupon and so far I have not seen what they stated would happen. The other thing is, after they left, I turned the a/c back on, and it now the hvac system has a loud whiny whistle that was not there when they showed up.
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