One of the most important parts of maintaining a furnace is changing your air filter regularly. The right air filter not only protects your heat pump or other furnace parts, but it can also improve your indoor air quality. Regular filter changing can also reduce your need for furnace service in Seattle .
Watch this video for advice on picking the right filter for your furnace. After you find the size of the filter you need, look for one that has a pleated surface area that traps the maximum amount of dust and other contaminants. The best filters have both pleated surfaces and a small, grate-like covering over the pleats that contains an electro-magnetic charge to attract more contaminants. As a general rule, if you can see through a filter, don’t buy it, because it won’t effectively protect your air or your furnace.