How often should you service the furnace before winter?
Once a year. On a calendar: September.
Why it matters
A fall tune-up catches failing igniters, cracked heat exchangers, and blocked flues before the first cold night — and keeps most warranties valid.
How to do it
Book a professional service in early fall. Between visits, keep the filter fresh and the area around the furnace clear.
Signs you've waited too long
Short cycling, a yellow burner flame instead of blue, or the smell of combustion in the house — the last two mean call someone today.
Same part of the house
Gable keeps this list for you.
The Gable app builds your home's maintenance schedule, reminds you when tasks come due, and keeps the record of everything you've done. Coming soon to iPhone.