What a heating tune-up is for
A heating tune-up is a once-a-year inspection, cleaning and test of your heating system before peak season. It catches worn parts, confirms safe combustion and keeps warranties valid.
The best time is early fall. By the first hard freeze, providers are busy with breakdowns.
What's checked, by system type
| System | Key tune-up items |
|---|---|
| Gas furnace | Burners, flame sensor, ignitor, heat exchanger inspection, gas pressure, venting, CO test |
| Oil furnace or boiler | Nozzle and filter, electrodes, combustion analysis, chimney draft |
| Heat pump | Defrost operation, refrigerant performance, aux heat, outdoor coil |
| Boiler (hydronic) | Pressure, expansion tank, circulator, relief valve, venting |
| Electric heat | Elements, sequencers, limits, connections |
Combustion and carbon monoxide
On fuel-burning systems, a combustion analysis measures CO and efficiency in the flue. It's the only way to know whether the burner is running clean.
Pair the tune-up with a test of your CO alarms.
Do these between tune-ups
- Check the filter monthly in winter
- Keep 3 feet clear around the furnace or boiler
- Clear snow from outdoor vents and heat pumps
- Test CO and smoke alarms monthly
- Listen for new noises and note them
A thorough tune-up, step by step
- Ask about any problems from last season.
- Inspect and clean burners or coils.
- Test safety controls (limits, pressure switches, rollouts).
- Measure temperature rise, gas pressure or refrigerant performance.
- Check venting and combustion.
- Run full heat cycles and give a written report.
Tune-ups and warranties
Many furnace and heat pump warranties require proof of annual professional maintenance. Keep the invoices. If a major part fails later, you may need them for a claim.
Some utilities also offer rebates or discounted tune-ups in fall. Check your utility's website.
Tune-up FAQs
How long does a heating tune-up take?
Usually 45 to 90 minutes, depending on the system and how much cleaning is needed.
Is a tune-up worth it on a new system?
Yes. It protects the warranty and catches installation issues early.
Next steps
Ready to get it fixed? Call (888) 555-0142 to reach a licensed provider in your area. Related guides:
Busy winter markets: heating repair in Wisconsin · heating repair in Colorado · heating repair in New Jersey · heating repair in Missouri · heating repair in Indiana · heating repair in Washington · all states.