Key takeaways
- Age, cracks, noise and rising bills are the main signs
- A cracked heat exchanger is a safety issue
- Repairs that keep coming back add up
- October is a better time than January
The signs
Furnaces that are older, noisier, short-cycling or needing frequent repairs are candidates. Rising heating bills, uneven rooms and yellow or flickering burner flames are also reasons to have it checked.
A cracked heat exchanger is the most serious: it can allow combustion gases into the airstream. If one is suspected, the furnace should not be run.
What a check includes
A technician inspects the heat exchanger, burners, ignition, venting and controls, and tests combustion where possible. They should show you what they found.
If the furnace is sound but old, you can plan a replacement for a time that suits you.
Plan the swap
Replacing a furnace in the fall lets you choose equipment calmly, compare options and schedule the work.
Ask about efficiency, staging and whether the ducts can support the new unit.
Related services
Quick answers
Is a yellow burner flame a problem?
Burner flames should be mostly blue. Yellow or flickering flames can indicate a combustion problem and should be checked.
Should I buy a carbon monoxide detector?
Yes. Detectors are a basic safety device in any home with fuel-burning equipment.
Ready to talk it through? Get a free estimate or call 615-431-3789.