Furnace Tune-Up Cost

A fall tune-up gets a furnace ready for winter and checks for gas and carbon monoxide leaks. HomeGuide puts a tune-up at $70 to $200, with a national average of about $130. Angi's average for an inspection is $100, with a range of $50 to $300 or more.

Inspection vs tune-up

A basic inspection gives a diagnostic report and light cleaning. A full tune-up adds filter changes, cleaning of the burners and flame sensor, and adjustments. Angi says an advanced inspection can take up to two hours.

Cost by fuel type

Angi notes gas and oil units cost more because they require carbon monoxide testing. HomeGuide says an oil tune-up also covers the oil tank, fuel lines and burners.

Maintenance plans

Yearly plans typically include an inspection, light cleaning, filter replacements, priority appointments and repair discounts (HomeGuide). A plan that also covers the AC in spring often costs little more than two separate visits; see AC tune-up cost.

Add-on services

Angi lists filters at $1 to $35 each and recommends replacing them about every 90 days. See duct cleaning cost.

When the tune-up finds a problem

Fixing a worn igniter or dirty flame sensor during a fall tune-up costs regular rates instead of emergency rates on the first cold night. See furnace repair cost.

Skipped maintenance

Angi says a furnace that has gone a while without service will likely need a tune-up of about $130 to $200 on top of an inspection.

What a furnace tune-up includes

A typical tune-up covers a visual inspection and a series of checks:

• Inspecting the burners, igniter and flame sensor.
• Checking the heat exchanger for cracks or signs of damage.
• Testing safety controls, such as limit and pressure switches.
• Checking the blower motor and electrical connections.
• Measuring gas pressure and temperature rise.
• Looking at the vent and flue.
• Replacing or checking the air filter.

Why it matters

Most furnace problems show up early as small issues: a dirty flame sensor, a worn igniter or loose wiring. A tune-up catches these before they turn into a no-heat call on a cold night. It is also a chance to check for carbon monoxide risks.

What affects the price

• One-time visit or a maintenance plan with regular visits.
• Whether the visit includes the air conditioner as well.
• Furnace type and accessibility.
• Parts, which are usually billed separately if needed.

How to judge a tune-up offer

Very low-priced tune-ups are sometimes used to find repairs to sell. That does not make every recommendation wrong, but it is worth asking for a written checklist of what was done and photos of any problem found.

Questions to ask

1. What is on your checklist?
2. Will you test for carbon monoxide?
3. Does the price include a filter?

In Texas

Texas homes often have the furnace and air conditioner sharing the same blower and ductwork. Many companies offer a plan with a spring AC check and a fall furnace check, which fits the Texas climate well.

What a tune-up should include

A thorough furnace tune-up covers safety, performance and reliability. Look for these items in the company's checklist:

• Inspect and clean the burners and the flame sensor.
• Check the igniter or pilot.
• Inspect the heat exchanger for cracks or corrosion.
• Check the inducer motor and the pressure switch.
• Inspect the venting and the flue for blockages and proper draft.
• Measure gas pressure and adjust if needed.
• Test for carbon monoxide.
• Check the blower motor, wheel and belt, if there is one.
• Check and change the air filter.
• Test the safety controls, including the limit switch and rollout switches.
• Check the thermostat and the heating cycle.
• Clear the condensate drain on high-efficiency furnaces.

When to schedule

Fall is the best time for a furnace tune-up, before the first cold snap. Problems found then can be fixed before you need heat, and you avoid the rush of calls on the first cold day.

What you can do yourself

Change the air filter on schedule, keep the area around the furnace clear, make sure all vents and returns are open, and test your carbon monoxide detectors. For high-efficiency furnaces, check that the outdoor intake and exhaust pipes are not blocked by snow, leaves or nests.

Tune-ups and warranties

Many manufacturer warranties require proof of regular maintenance. Keep the receipt or checklist from each visit in case you need to file a claim.

Watching for upsells

A tune-up visit may include recommendations for repairs or upgrades. Ask for an explanation, measurements or photos of any problem, and get a second opinion before agreeing to expensive work, especially if a technician recommends replacing the furnace during a low-priced tune-up.

Signs your furnace needs attention before the tune-up

Call sooner if you notice yellow or flickering flames, soot around the furnace, a burning smell that does not go away after the first few minutes of the season, frequent cycling, rising gas bills or carbon monoxide alarms. These are not issues to wait on.

How long a tune-up takes

A complete furnace tune-up usually takes about an hour. A visit that is much shorter probably skips cleaning, combustion testing or safety checks. Ask the technician to walk you through what they found, and to note the readings on the invoice, such as gas pressure, temperature rise and carbon monoxide levels, so you have a record to compare against next year.

Sources

1. HomeGuide: Furnace Tune-up, Inspection & Maintenance Costs (Apr 29, 2024)
2. Angi: How Much Does a Furnace Inspection Cost? (updated Jul 9, 2026)