Replace Your Furnace Filter

How to Clean or Replace Your Furnace Filter

Your furnace filter is the key to the proper operation of your furnace system.  A clean filter in the spring and summer helps your air conditioning system run properly.  Then when Fall and Winter come around the filter performs the same function.  The furnace filter removes dirt and alergins that can make your furnace run less efficient and it also reduces the duct level in your home. 

Has it been more than a month since you ventured into your furnace's filter area? Then it's probably time to clean or replace this dust and dirt catcher to prevent you from sneezing your way into winter mornings. A clean filter maximizes your furnace's efficiency and longevity-- and minimizes your energy bills.


1. If the floor or area near the furnace is a dust-bunny breeding area, vacuum or sweep prior to replacing the filter

2. Locate the service panel, usually on the furnace's lower front or side.

3. Turn off the furnace, then gently pop open or pull down the panel door with your hands; tools usually aren't needed.

4. Locate the filter--a framed-mesh rectangular screen inserted either horizontally or vertically near the intake-out-take blower.

5. Slide the Furnace filter out









6. Check for brown, dusty buildup on the mesh screen (or a screen you're unable to see through).

7. If you have a reusable plastic-frame or metal-frame filter, use a hose to rinse away the dust particles on the screen in the backyard or driveway. Let it dry, then return it to the furnace.


8. If you have a disposable cardboard-frame filter, write down the size, then throw it away. Buy a new furnace filter of the same size (available at hardware and home supply store.












Skip Howes

CGP - Certified Green Professional

CGB - Certified Graduate Builder

CAPS - Certified Aging in Place Specialist

RRP - Certified Lead Paint Renovator

Scott Homes, Ltd., Designers & Builders






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