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F.H. Furr's Plumbing, Heating, Cooling & Electrical Insider Blog

Ask A Trainer: When should you change your air filter?

Do you know how often your home's HVAC filter should be changed? Our experienced trainers are answering this question in our Ask A Trainer video series today!

Most heating and air conditioning systems use a standard one-inch filter, but your system might instead have a four to five-inch filter, depending on the filtration efficiency. For most standard HVAC filters, a good rule of thumb is to replace them every 60-90 days. Some homeowners who suffer from allergies or other health concerns may choose to change their filters monthly. If your system uses a thicker five-inch filter, these can last up to twelve months. But you will still need to check these larger filters regularly for best results.

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Topics: Indoor Air Quality HVAC Maintenance air filters