Furnace filter guide — CNET


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Homeownership comes with what appears like a endless to-do listing. One necessary process on that listing is guaranteeing your heating and cooling system is properly maintained. You ought to be changing your furnace’s air filter regularly to maintain your HVAC system working correctly and guarantee your loved ones has good air high quality in your house. Maintain studying to learn the way furnace filters work, how usually you need to change yours, what sort of filter to get and extra.

Learn extra: Furnace buying guide: Find the best furnace for your home

How furnace filters work

Earlier than we discuss changing your furnace filter, let’s discuss in regards to the objective these filters serve and the way they work. The job of a furnace filter is to entice contaminants from escaping by means of your home’s heating and cooling system.

There are two causes it is necessary to filter out these contaminants. First, a superb furnace filter will maintain the air in your house cleaner by trapping any airborne contaminants. That is particularly necessary for anybody with allergy symptoms or bronchial asthma, because the filter helps take away pollen, mud and different allergens.

The opposite cause the filter exists is to guard your HVAC system. And not using a filter, dust and different particles can accumulate in your heating and cooling system, affecting your energy bill and requiring you to switch your HVAC system sooner.

How usually to switch a furnace filter

As you possibly can inform, your furnace filter serves an necessary job in your house. Consequently, it is necessary to switch it regularly to make sure it might probably proceed to do its job properly.

So how usually must you change your air filter? That is determined by just a few elements. First, how usually you change your filter is determined by the thickness of your air filter. Most filters ought to be changed each three months. For thicker filters, you could possibly lengthen that by a number of months. For those who aren’t positive, verify the producer’s suggestion for the precise filter you’ve got bought.

However the thickness of your air filter is not the one issue to contemplate. For instance, when you’ve got somebody in your house with allergy symptoms or bronchial asthma who requires higher indoor air high quality, you could wish to change your filter extra usually. 

Moreover, when you’ve got pets at dwelling creating fur or dander, or a big household to herald extra contaminants, you might also want to change your filter extra usually. Then again, if the house is primarily a trip dwelling that is not used usually, you could possibly lengthen the period of time earlier than you change the filter.

Discovering the proper filter in your furnace

Once you change your air filter, it is necessary that you just discover the proper filter in your dwelling. Not all filters are created equally, and your heating and cooling system might require a sure sort.

First, be sure you purchase the proper dimension filter in your HVAC system. Widespread filter sizes are 16×20, 16×25 or 20×25 inches. You’ll be able to verify the filter you presently should see what dimension it’s.

Along with selecting the best dimension, you may additionally should determine what sort of filter you need. There are a number of differing kinds, every of which has totally different benefits. The commonest sort of filter is fiberglass — this kind of filter is usually about an inch thick and catches giant contaminants. It might not be ample when you’ve got somebody in your house with bronchial asthma or allergy symptoms, since it might probably fail to entice smaller contaminants.

Different kinds of filters embrace:

  • Disposable pleated: Any such filter is made from cotton or polyester, is ready to catch small particles, and is essentially the most inexpensive. Any such filter ought to be modified extra usually.
  • Disposable electrostatic: Manufactured from self-charging electrostatic paper or cotton fibers, this kind of filter can entice small dangerous particles. Any such filter is barely dearer than the disposable pleated however inexpensive than a few of the larger high quality filters beneath.
  • Everlasting electrostatic: Any such filter is just like the disposable electrostatic one, however is everlasting. You’ll be able to take away it and clear it, and even wash it within the washer. They’re dearer however do not must be changed, saving you cash in the long term.
  • Excessive-efficiency pleated: Any such filter is thicker than many others, usually as much as 4 or 5 inches. Any such filter can entice the smallest particles, creating the perfect air high quality. Any such filter is dearer and cannot be used with all filters.

Methods to change a furnace filter

Now that we have talked about how usually to switch your air filter and what sort to get, let’s discuss the way to go about changing your filter. Here is a simple step-by-step information to changing your air filter:

1. Flip off your furnace. 

2. Find your filter compartment and take away the door or service panel.

3. Slide the outdated filter out.

4. Slide the brand new filter in.

5. Flip your furnace again on.

The underside line

Your furnace’s air filter is a vital a part of guaranteeing you might have good air high quality in your house and increasing the lifetime of your HVAC system. They’re straightforward to switch, nevertheless it’s crucial that you just change them regularly and purchase the proper sort of filter in your furnace. You probably have questions on your furnace or aren’t positive the place to begin with changing your filter, be sure you contact a professional skilled for assist.

Extra dwelling guides

https://www.cnet.com/dwelling/energy-and-utilities/furnace-filter-guide/ | Furnace filter information — CNET


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