By keeping your home clean, you also help keep your indoor air free of dust, pollen and other airborne contaminants that can trigger allergy attacks, asthma and other respiratory problems. Some HVAC contractors also suggest an annual or semi-annual duct cleaning as part of your regular preventive maintenance routine. If a duct cleaning has been recommended to you, be cautious. Duct cleaning may not always be necessary, and in some cases, the recommendation could be an outright scam.
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