08/28/2026
Before the heat comes on this fall, change the filter.
That filter has been working all summer. Every hour the AC ran it pulled air through it, and by now it is loaded with dust, pet hair, and whatever came in the windows. Then heating season starts and the furnace has to pull air through that same clogged filter.
Restricted airflow means the furnace cannot move heat off the heat exchanger fast enough. It overheats, the limit switch shuts it down, it cools, fires again, overheats again. That is short cycling, and it is behind a good share of the no heat calls we run in October. Let it go long enough and it is what cracks a heat exchanger.
The size is printed on the edge of the old one. The arrow on the frame points toward the furnace, not away from it. Two minute job.
If yours has not been changed since spring, do it this week. And if nobody has looked at the furnace in a couple of years, get it on the schedule before the fall rush. (570) 822-8158.