Attic Furnace Filter

As the merv rating increases the finer the filtration becomes.

Attic furnace filter.

Attic whole house replacement filters. Excessive dust and debris in the furnace area will be pulled into the. Fire hazards can result if there are excess items pressed against the furnace. You say you changed the two in the living areas suggesting that you have a dual zone system 2 floors.

Attic replacement and deep pleated air filters utilize 100 synthetic fibers high initial efficiency and will not promote the growth of bacteria mold mildew or fungi in normal operating environments. With forced air systems air gets sucked in through the return vents from all around your house goes through the air filter and then through the hvac system where the air is either heated or cooled depending on what you have your thermostat set to. Keep the area around your attic furnace clean. The most common airborne contaminates that these filters are tested against tend to include pollen dust mites mold spores dust pet dander.

However both your furnace and a c share a single filter. Merv means minimum efficiency reporting value merv and is an industry standard that measures the overall effectiveness of air filters.