Time to Change your Furnace Filter if it looks like the one on the right!
Replace the filter at least every time the seasons change.
Marking your calendar every 90 days or trying to remember the last time you changed the filter can be challenging, so many furnace manufacturers recommend replacement at the start of each new season. Yes, even in warm weather, when you’re likely to be using your air conditioner. A clean filter is necessary to keep dust from being sucked through the HVAC system, where it can gather on the air conditioner’s inner coils and reduce the unit’s efficiency.