Simple but important task this fall

Replace furnace filter

Part of your home’s preventative maintenance this fall should include changing your furnace filter. A clogged filter reduces airflow, which costs you money in the form of reduced efficiency, higher electricity bills and reduced lifespan of your HVAC system. In addition, a clogged filter can cause your furnace to breakdown or in severe cases be a fire hazard.


To avoid higher energy costs and/or expensive repairs, please ensure 

1. Your furnace filter is examined monthly and replaced every 90 days (check the manufacturer’s recommendations for full details). Try adding a reminder to your calendar for the first day of each quarter.

2. Keep your cold air return registers clean and unobstructed.

Keep in mind that some filters perform much better than others. If you need some help deciding which to use, contact a Direct Energy recommended vendor like Furnace Filter King to assist you in making the right choice for your home.

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4 Responses to “Simple but important task this fall”

  1. Donna says:

    Which way does the air flow arrow on the airfilter face?
    The duct work or towards the furnace?
    Thank you


    • Dave says:

      Hi Bill,

      Depending on the size and type of filter housing you have will dictate the filter you need.

      A very common disposable filter size is 16x25x1. There are full array of filters in this size plus the exact same style of filters in many other sizes.

      I recommend you confirm your filter size by looking at your existing filter and making note of the size.

      Any of the large hardware type stores carry a good selection of the most common filters.

      One thing you do need to try to determine is what type of filter your furnace manufacturer recommends. If you have an owners manual for the furnace, it should be noted in there. You should try to purchase an air filter that is compatible with the air flow the manufacturer recommends that the furnace requires. In simple terms, some filters that might look the same actually have different characteristics about them – one of those being the air flow that the filter allows.

      Generally speaking (and if you are unable to determine mfr spec) you are typically best with a middle of the road price range for a disposable 1” filter.
      Direct Energy does not endorse any particular type or brand of filter.


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