When is it time to change furnace filter

When Do You Need To Change Your Furnace Filter

When Do You Need To Change Your Furnace Filter

When is it time to change furnace filterThere are many things we do to improve air quality in our homes. We buy air purifiers, open windows, and clean often. But many people miss one of the most important air-quality control systems — changing your furnace filter.  

The air filters in your furnace (or air conditioner) protect it from dust and debris while also improving air quality. And yes, they do need to be changed more than once a year.

Rule Of Thumb

If you are unsure how often your filter needs to be changed, do it at least every 90 days.  But, if you have pets, allergies, or young children, you should change your filter more often to ensure your breathing in quality air.  The frequency in which you use your filter as well as the size of your home is also a factor.  Additionally, different types and sizes of filters require different changing frequency:

  • Cheaper fiberglass filters, change every month
  • Average filter, change every 3 months
  • High-end fiberglass filters, change every 6 months


If anyone in your household suffers from breathing-related problems, you want to ensure the air is as free from harmful particles as possible. People with allergies should try to change their filter every 6 weeks and may want to invest in a higher-quality filter to avoid allergy-related symptoms.


Pets cause an increase in dander and odour that make changing your filter every 2 months necessary. Change the filter more when your pet is shedding, usually during the summer and winter.


It’s a well-known fact that tobacco smoke can be very harmful, so if you have a family member that smokes be sure to change your filter more than normal. The more people in your home that smoke, the more you should change your filter.

Young Kids

Young kids are especially susceptible to poor air quality. If young children are in the house, change the filter every 2-3 months.


By now, you should realize that changing your furnace filter is very beneficial. Some of the benefits are:

  • Improving air quality
  • Preventing dust build-up
  • Preventing allergies
  • Increasing the lifespan of your furnace

You don’t want to mess with your furnace, and you certainly don’t want to mess with your families health, so change your furnace filter.

Why Choose A Service From High Mark Service Group

When you need service, you need it fixed fast and fixed properly. Highmark offers quick, affordable service as soon as possible. We are here for you!

  • Our technicians are the most experienced available
  • We offer a methodical approach so you do not have unneeded repairs
  • Fully stocked trucks
  • We do residential, commercial, and industrial asbestos service
  • Your satisfaction is our goal

We Are Here For You

If you have any questions call the professionals at Highmark Plumbing and we will be happy to answer them for you. For any heating, electrical, or home repair issues visit our sister websites Highmark Heating,  Highmark Electrical or Highmark Construction


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