How to Clean an Electronic Furnace Filter

Many furnaces use disposable filters, which are not designed to be reused. If your furnace filter is electrostatic, however, it's reusable. You can wash it and reuse it, time and time again. Energy Star advises homeowners to inspect their filter monthly. If you don't clean your electronic filter on a regular basis, according to "2,001 Amazing Cleaning Secrets," you could ultimately damage your furnace. While there are a few general guidelines you can follow to clean the filter, you should always adhere to manufacturers' instructions.

Things You'll Need

• Mild detergent

Instructions

1. Rinse the electronic furnace filter in a large utility sink or tub under cool running water. Turn off the faucet and set the filter aside.

2. Fill the sink with a mixture of hot water and a mild detergent. Immerse the filter in the sink; allow it to sit under water for about 30 minutes, occasionally swishing it side to side.

3. Drain the water, then rinse the filter again with cool running water. Use a sprayer attachment on your faucet if possible. Turn off the faucet.

4. Let the filter fully dry.

Tips & Warnings

• Make a note of the date you have cleaned the filter.

• Never operate your furnace without a filter.

• Do not use a harsh soap to wash the filter.

• According to "2,001 Amazing Cleaning Secrets," not allowing the filter to dry completely before you return it to the furnace could cause electrical shock or may short your furnace.

References

• EnergyStar.gov: Heat and Cool Efficiently
• "2,001 Amazing Cleaning Secrets"; Jeff Bredenberg; 2004
• "Home Improvement 1-2-3"; Home Depot; 2003

Resources

• Furnace Filter Care