Do You Change The Filter To
Maintain Occupant Air Quality?
Many people have the misconception that the furnace filter's primary purpose is air quality for the inhabitants, it's not. The primary purpose of the filter is to protect the mechanical equipment.
How Often Should I Change The Filter?
Depending upon usage, furnace filters should be checked every three months and replaced when they reach a condition in which accumulation of particles becomes so thick that particles may be blown loose from the filter and into indoor air. Homes in areas with high indoor levels of airborne pollen or dust may need to have air filters checked and changed more frequently. Failure to change the filter when needed may result in the following problems:
What Happens If I Neglect To
Change The Furnace Filter?
Failure to change the filter when needed may result in the following problems:
1.reduced blower life due to dirt build-up on vanes, which
2.increased operating costs;
3.reduced indoor air quality;
4.increased resistance, resulting in the filter being sucked into the blower; this condition can be a potential fire hazard;
5.frost build-up on air-conditioner evaporator coils, resulting in reduced cooling efficiency and possible damage; and
6.reduced air flow through the home.
The Furnace Filter Should Be Sized Correctly
The air filter for this furnace was the wrong size. This condition can allow particulates to pass beyond the filter and into indoor air or may result in the filter being sucked into the blower, causing damage to the blower and creating a potential fire hazard.
These Pictures Are An Example Of A Very Poor Installation Of A Heat Pump Furnace In San Diego, CA
While doing a home inspection in San Diego, I came across this poorly thought out installation of the air handler.
Watch This Little Video, And I Will Describe This Part Of The Home Inspection For You
I hope this helped you understand the importance of changing the furnace filter. Also, don't waste your money on the expensive high efficiency filters. The experts recommend using the less restrictive cheap filters because they cause less strain on your mechanical system. Remember, it's not about air quality, it's about protecting the mechanicals.
About the author: Frank Rotte is the Founder of Certified Inspection Services, LLC in Bonsall, CA. Comments are always welcome! Please visit us on Facebook at https://www.facebook.com/homeinspectionsandiego/