01/31/2025
This past summer we experienced an extended heat wave which stressed our A/C systems to their limits. This winter we had unusually low temperatures which did the same to our heating systems. If you have forced-air HVAC in your home or business; the cheapest and easiest way to help ensure it will function well under strain, and not break down, is to regularly change your air filter.
How often should you change it? That depends on various factors such as where you live, the type and number of pets in your house, and etc. But the best rule of thumb to use is based on the thickness of your filters:
• For 1-to-2-inch filters, replace every 1-to-3 months.
• For 3-to-4-inch filters, replace every 6 to 9 months.
• For 5-to-6-inch filters, replace every 9-to-12 months.
• If you can't even remember the last time you changed the filter, it probably looks like the one in the photo; so replace it TODAY.
And one more thing: To truly help you avoid nasty surprises, have an HVAC technician inspect your system twice a year. Once in the spring, and once in the fall.