Take a look at some of the questions we receive most often about these key HVAC components.
1. What are the different types of furnace filters?
Filters fall into two categories, permanent and disposable. Both types of filters can be made of natural fibers (like cotton), or synthetic fibers (like polyester or fiberglass). But the difference in the two types of filters is the material that their frames are made of. Permanent filters have frames made of metal or fiberglass and disposable filters typically have frames made of cardboard.
2. I'm doing research about types of filters, and I keep seeing the phrase "MERV rating." What does that mean?
MERV stands for Minimum Efficiency Report Value. This scale rates the filter's particle-trapping capacity. It is very helpful when you are trying to compare the performance of several filter brands or types. The higher the MERV rating, the more efficient the filter.
3. How often should I clean or replace my filters?
We recommend cleaning or replacing your filters about once a month. This timeline is especially important during the colder months when the furnace is in use. Clean and properly maintained filters can help improve the efficiency of your furnace by helping improve air flow.
4. How do I clean my filters?First and foremost, you should only be cleaning and reusing filters that fall into the "permanent" category. Disposable filters are just that, disposable and will not hold up to being cleaned.
Before you start taking apart your furnace to clean the filter, double check that the furnace is off. From there you just unscrew the service panel on the furnace and remove the filter. If you like, that filter can be vacuumed to remove some of the build up. Most filters can be cleaned with a thorough rinse in the sink. Once the filter is completely dry, it can be returned the furnace, and you are all set.
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