The furnace is one of the most popular of all home heating systems. It is a forced air heating system, meaning that the furnace heats air directly, and then distributes that heated air throughout a home via a system of ductwork. A key component in this type of heating system is the air filter.
There are air filters that have high MERV (minimum efficiency reporting value) ratings, and which are designed to protect and improve the indoor air quality in your home. The standard air filter in a furnace is not really there to serve this purpose, but to protect the components in the furnace themselves from dust and dirt buildup. A dirty air filter can seriously impede your furnace in Ludlow, VT. Continue Reading

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