Getting the Most Out of Your HVAC Air Filter - Manchester, NH, Merrimack, NH & Nashua, NH | Sanford Temperature Control, Inc.

Summer is approaching fast, and once the heat sets in, it’s likely your house will be buttoned up tight to keep all that cool air indoors. But what does this do to your indoor air quality? And why is it important for you to choose the correct air filter for your HVAC system?


Your filter choice can have a significant impact on your comfort, energy bills, and indoor air quality. Do you prefer the cheaper air filters, and change them every month (this is especially important if you have pets, or if anyone in your home is prone to allergies or asthma)? Or do you prefer the more expensive 90-day models?
The 90-day model will probably do a great job of filtering your indoor breathing air, however, if your home tends to be a bit dustier than average, particulates can clog the filter before the 90-day mark. This can put undue stress on your system, which reduces its efficiency and your comfort.


The bottom line is that there is no silver bullet. We suggest erring on the side of moderation. Buy a decent filter, and check it every 30 days, even if it’s a 90-day model. It’s always handy to keep plenty in stock so you can avoid getting overwhelmed with all the sizes, styles, and prices at your local hardware store as well. Better yet, call the experts at Sanford to help you out!




1) It’s important to NEVER put an incorrect filter size in your system. It can leave gaps where dust, hair, dander and allergens will be injected into your indoor breathing air. Always turn off your furnace at the breaker panel or disconnect (not just the thermostat) before replacing your filter. Some furnaces have electrical wiring close to the filter location, which could shock you if the power is not disconnected first. Safety first!


2) Don’t set your system too high or too low to save money. It usually costs more to heat or cool a house with extreme temperature swings. Use common sense to turn it up or down to appropriate levels while you’re away; a comfortable temperature tends to be 68 degrees in the winter and 78 degrees in the summer, give or take.


Do you have a heating or air conditioning question? Contact us today! We look forward to helping you out.

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