How to Prepare Your Furnace for Winter
Before winter arrives, the most important thing you need to do for yourself and your family is to ensure that your furnace is operational, safe, and as energy-efficient as you can make it. When that first cold day hits, you don't want to turn on the furnace only to discover that it isn't working. (A lot can happen during the warmer months to affect your furnace.)
No doubt about it, your best bet is to call an HVACR professional and have them come out and inspect your furnace. During a regular maintenance inspection, the repairman also will clean the furnace, change the filter, check for leaks and unhealthy gases, and ensure that everything is operational. You also can (and should if you can afford it) pay them to clean the furnace ducts.
Here are a few other things that you can do yourself:
Change the furnace filters regularly. Some suggest every three months; others suggest monthly. At least take a look at the filter after 30 days of operation. You'll be able to tell if it needs to be changed. If your filter still looks pretty good, you can put off changing it.
Stock up on filters during the warmer months. You often can find a bargain on furnace filters and other winter items during those hot summer months.
Remove any items you have stored near the furnace, particularly anything that is likely to catch fire. Also remove any household items that are suddenly sitting on top of or in front of your air ducts and return vents.
If you have a gas furnace, contact your gas company and have them fill 'er up. Gas is certainly much cheaper to buy during the summer than in the middle of a January cold spell.
If you have hot-water radiator(s), bleed the valves. Open the valves slightly and close them again when water starts to appear.
Having carbon monoxide and radon detectors are important for everyone's safety. You can purchase these detectors at most hardware and big box, do-it-yourself stores.