Real quick – have you been changing your filters? By now, your furnace has probably been running for about three months (although with this weather, who knows!). Remember – for maximum efficiency, you should change your filters every one to three months. If you haven’t changed yours yet and you’re starting to notice an uptick in your heating bills, your filters are probably clogged up. Swap them out for new ones or clean them off for another month of energy efficient heating!
While the exact steps for changing your furnace filters are slightly different for different furnace models, the basics are the same. Before you start, turn off the furnace power at the main circuit breaker.
If you have an Upflow furnace (where air moves upward), the filter is usually located in the blower compartment adjacent to the cold air return. To remove it, you’ll have to remove the top door and then the bottom door. After you’ve replaced the filter, make sure you reinstall the bottom door so it covers the furnace frame and engages the safety switch. Without this, the furnace will not run!
If you have a Downflow furnace (where air moves downward), the filter should be located in the upper blower compartment. Some furnaces will have a V-shaped filter system; the system will take two filters. Make sure when you re-install the top door that it goes over the furnace frame so it engages the safety switch. If it doesn’t, the furnace will not run.
If you have a horizontal furnace, it probably comes with a slide-in filter rack – this makes replacing your filter easy!
If you’ve been keeping up with your filter replacement but you’re still having problems with your furnace, don’t stress – call James A. Wheat & Sons for MD furnace repair today!