Old man winter is knocking on the door and it’s a good bet you may be reaching toward your thermostat you fight him off. The battle to stay warm this winter can be expensive, but performing a number of routine furnace maintenance tasks can help keep your heating costs down. These seven tips, which should be done before winter sets in, are relatively easy to perform and can significantly boost your furnace’s efficiency while reducing risks to your safety, such as carbon monoxide poisoning. Step 1. Turn off the Gas Before you start your furnace maintenance, turn off the gas or electricity depending on the type of furnace. Gas furnaces should have a black pipe with a shut off valve connected to it. Turn the valve so it aligns perpendicular with the pipe to shut off your gas. Most electrical furnaces have a switch to shut the system off. For older models, you may need to shut off breaker connected to your furnace in your home’s fuse box. Step 2. Replace Your Filters Air filters block dust, pollen, and other particles from flying into your home along with the warm air from your furnace. Over time, these filters become clogged. A clogged filter can cause you to lose 5 to 15 percent of your furnace’s energy efficiency, according to the U.S. Department of Energy. You should replace or clean your filters before the start of every heating season and each month during heavy furnace use. Some furnaces have reusable filters and others have disposable filters. If you have a reusable filter, simply slide it out, vacuum it off, wash it off with water, let it dry, and return it into the furnace (keep your vacuum handy for Step #3). If you have a disposable filter, replacement takes a few minutes and a $10 investment from a hardware store. Just make sure you buy one that matches your furnace model. You may want to take the old one with you to the store. Filters are usually in a slide near the bottom of the furnace at the front of the unit. It should slide out easily. Slide a new one into place and you’re set. Step 3. Check the Pilot Light If you have a natural gas furnace, make sure your pilot light flame is blue. If it’s colored yellow or orange, your furnace may have a mechanical problem. Call for professional repairs immediately if the pilot light is any color but blue. Step 4. Vacuum Using a vacuum cleaner with an extension hose, open the furnace door (with the furnace’s fuel source shut off!) and suck up any visible dirt and debris. This, again, will help your furnace run more efficiently. Step 5. Oil the Bearings This won’t be necessary on most furnaces, which have sealed bearings, but older furnaces with oil ports on the motor need annual lubrication to run efficiently. Check your owner’s manual to see whether this step is necessary. First, remove the furnace door to access its interior. Put a couple drops (don’t over-oil) of 10-weight non-detergent motor oil to each oil port. The blower shaft may have oil ports, which require the same amount of oil. Step 6. Check the Belts Fanbelts that drive your furnace blower’s motor deteriorate over time, which can lead to decreased efficiency or cause the furnace to stop working. If the belt has any cracks or fraying on the ends, you should replace it immediately. Check your owner’s manual for instructions about replacing the belt on your model. You’ll also want to check whether the belt is taut. A loose belt should be tightened. If you push on the middle of the belt, it should only move about a half inch to three-quarters of an inch. You can tighten the belt by loosening the bracket that secures it, followed by moving the motor assembly to increase tension. Once you’ve found the right level of tension, tighten the bracket you just loosened. Step 7: Buy a Carbon Monoxide Detector All the previous steps help reduce carbon monoxide, a toxic, odorless gas often labeled the “silent killer.” For $5 and a few minutes of your time, you can buy a carbon monoxide detector that will tell you the level of carbon monoxide for the life of the device (usually two to three months). Buy a passive CO test kit and place the device near the furnace. If it finds carbon monoxide, it’ll darken within 15 minutes. If not, just leave it in place and check it regularly. Read more »




