How Much Does the Average Furnace Repair Cost? [2025 Data]

A cozy night in can quickly turn sour if your furnace decides to break down. Simple repairs on an electric furnace can run as low as $132, while more extensive repairs to a gas furnace can be as high as $501. The cost to repair a broken furnace averages around $317.

Furnace Repair Cost by Part

Regardless of whether they are electric or gas, furnaces are complex beasts that have a lot of working parts. Some of those parts significantly influence furnace repair costs, while others are simpler and less expensive.

Here is the average furnace repair cost based on the part:

Thermostat Repair Cost

If you’re having problems with your furnace, a good place to start investigating is the thermostat. Broken thermostats can really mess with your utility bills, whether as a result of faulty wiring, a blown fuse, or simply age. Repairing a thermostat costs between $100 and $300. If you choose to replace your thermostat or upgrade to a smart model, that can cost upwards of $600.

Blower Motor Repair Cost

The blower motor pushes air through your ducts, which is an essential function of your furnace. Simple blower motor repairs can be between $150 and $450, while a replacement could cost up to $2,000.

Draft Inducer Motor Repair Cost

The draft inducer motor’s function is a bit more complex than the blower motor. It pulls gasses through the heat exchanger and out the flue to prevent carbon monoxide buildup. Carbon monoxide buildup is a serious safety issue that can lead to deadly carbon monoxide poisoning if left unchecked, so repairing this element is essential. Draft inducer motor repair or replacement costs run between $200 and $1,500.

Ignitor Repair Cost 

The ignitor is the problem child of most furnaces, and it fails more than any other part. Ignitor replacement typically costs $150 to $250, unless it happens after hours or in the middle of the night. Hiring an emergency furnace repair service near you can bump that cost up to $350 to $500. Regular maintenance of the ignitor keeps it clean and prevents the frequency of failure.

Flame Sensor Repair Cost

Thermocouples are the sensors in furnaces that detect whether or not the pilot light is lit. Usually found in all types of gas furnaces, these gadgets cost $150 to $250 to replace, mostly due to labor. They usually fail due to poor maintenance, so it’s important to adhere to a gas furnace maintenance checklist.

Gas Valve Repair Cost

A gas furnace needs natural gas or propane to work, and gas valves allow those substances to flow into your unit safely. Gas valves cost between $200 and $600 to replace.

Control or Circuit Board Repair Cost

Depending on the brand and age of your furnace, replacing a control board typically costs between $200 and $600. It’s the main circuitry that operates the components, and high-efficiency models are usually more expensive to replace.

Flue Pipe Repair Cost

The flue is an important safety feature of your furnace, as it carries toxic carbon monoxide and any leftover combustion gasses out of your home. Depending on the accessibility and the length, a replacement costs between $400 and $800.

Repair Cost for Relay or High Limit Switches 

This part allows electricity to reach the electrical components inside your furnace. The part alone costs between $5 and $20, but labor and diagnostics run the cost up to between $150 and $300.

Transformer Repair Cost

The transformer converts electrical power flowing into your home into a lower voltage to be used in your furnace. The part itself costs around $20 to $40, with labor tacking on another $80 to $135, making the total between $100 and $175.

Repair Cost for Oil Combustion Chambers 

Oil combustion chambers are found on oil furnaces and are made up of two components: the molded ceramic fiber oil combustion chamber and the actual oil chamber. Oil sits in the oil chamber before being transferred to heat in the combustion chamber to heat your home efficiently. The combustion chamber costs $200 to $600 to replace, while the oil chamber costs anywhere from $100 to $200.

Heat Exchanger Repair Cost

The heat exchanger is the part responsible for heating the air that’s pushed through your home. As this part ages, it can develop cracks that allow carbon monoxide to leak into your home. Repairs on heat exchangers run from $100 to $200, with a total replacement costing $500 to $1,500.

Repair Cost for Coils 

A furnace condenser or evaporator coil is actually part of the air conditioning system, but it lives inside the main furnace duct and uses the blower and ductwork. Furnace coils usually cost between $600 to upwards of $2,000 to replace.

Repair Cost for Burners 

Burner repairs cost about $150 to $450. The burners combine air with the furnace’s fuel source to create heat. The burners should last the lifespan of the furnace, however, a pro does need to come in at least once per year to clean the burners.

Furnace Filter Repair Cost

A new furnace filter costs about $1 to $35, and it’s easy to replace yourself. In fact, the furnace filter needs to be changed at least every 90 days, so it’s convenient to learn how to install a new furnace filter on your own.

Annual Furnace Maintenance Costs

A furnace requires regular maintenance in order to operate efficiently. Otherwise, dust and other debris can clog burners, the pilot light, and other parts, causing more wear and tear on the system.

A furnace inspection costs about $80 to $100 on average, and you need to schedule an inspection at least once per year to keep your system running smoothly. An advanced inspection, which typically includes cleaning and a tune-up, costs about $125 to $200.

Additional maintenance costs will include filters and air duct cleanings. You need to replace the filters at least once every 90 days, which will cost about $4 to $140 per year. Schedule duct cleanings every three to five years, and expect to spend about $275 to $500 for the cost of cleaning air ducts.

Cost to Repair a Furnace Near You

Furnace repair costs vary not only based on parts but also on location. Here are some furnace repair cost estimates for a few locations:

Furnace Repair Cost per Hour

Furnace repairs cost about $50 to $150 per hour for the labor, plus you’ll need to budget for the cost of parts. Typically, small repairs may be billed at a $100 to $200 minimum rather than by the hour. 

One of the quickest repairs is to replace a dirty filter, which only takes a few minutes and is easy to DIY. Some of the more difficult, time-consuming parts to repair include the blower motor, the draft inducer motor, coils, and the heat exchanger.

Can I Repair My Furnace Myself?

You should always hire a professional to do any sort of furnace repair or replacement. Attempting to repair a furnace is potentially dangerous, especially if it’s a gas furnace, which most of them are these days. A poorly done repair job can let toxic gasses into your home, endangering you and your family.

DIY-ing electric furnace repairs is also dangerous. You could get a nasty high-voltage shock, and repairing these furnaces incorrectly poses a fire hazard.

Aside from being dangerous, diagnosing the problem with a furnace is a difficult task for the untrained professional. For most everything that goes wrong, there are multiple potential culprits, and professionals are trained to assess exactly what’s happening and fix your furnace in an efficient and safe manner. In some areas, it’s actually illegal to repair your furnace without proper certifications. A professional will also be more efficient, and that’s important if your furnace malfunctions while it’s freezing outside.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We’ve surveyed over 10,000 real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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