How Much Does the Average Furnace Repair Cost? [2026 Data]

In 2026, the national average cost to repair a furnace is $318, based on 27,763 verified projects from Angi Pros. Most homeowners pay between $133 and $505, with your total depending on furnace type, the failed component, and labor rates in your area. Simple repairs on an electric furnace can run as low as $133, while more extensive repairs to a gas furnace can reach as high as $505.

Furnace Repair Cost by Part

Some components are straightforward and inexpensive to fix (like a flame sensor at $150 to $250), while others involve complex labor or costly parts, such as your heat exchanger (up to $1,500). Here is the average furnace repair cost based on the part:

Thermostat Repair Cost

Thermostat problems are one of the first things to investigate when your furnace isn't behaving, and repairing one costs between $100 and $300. Faulty wiring, a blown fuse, or simple age are the most common culprits, and all can drive up your utility bills if left unaddressed. 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 is responsible for pushing air through your ducts, making it one of the most essential components in your furnace. Simple blower motor repairs run between $150 and $450, while a full replacement could cost up to $2,000. Because the cost gap between repair and replacement is significant, it's worth having a pro assess the motor's condition before committing to either option.

Draft Inducer Motor Repair Cost

Draft inducer motor repair or replacement costs run between $200 and $1,500, making it one of the pricier components to address. This motor pulls gases through the heat exchanger and out the flue to prevent carbon monoxide buildup in your home. Carbon monoxide buildup is a serious safety hazard that can be deadly if left unchecked, so this is a repair you should never delay.

Ignitor Repair Cost

The ignitor fails more than any other furnace part, and replacement costs $150 to $250. If the failure happens after hours, hiring an emergency furnace repair service near you can bump that cost up to $350 to $500. Regular maintenance keeps the ignitor clean and reduces how often it fails, making it one of the easiest ways to avoid an unexpected repair bill.

Flame Sensor Repair Cost

Flame sensors, also called thermocouples, detect whether the pilot light is lit and cost $150 to $250 to replace, with labor making up most of that total. Found in all types of gas furnaces, these sensors most often fail due to poor maintenance. Following a gas furnace maintenance checklist is the most reliable way to extend their lifespan and avoid this repair.

Gas Valve Repair Cost

Gas valves control the flow of natural gas or propane into your furnace and cost between $200 and $600 to replace. This component is critical to safe furnace operation, so a faulty valve should be addressed by a licensed professional without delay. Because gas valves handle combustible fuel, improper installation poses a serious safety risk.

Control or Circuit Board Repair Cost

Replacing a furnace control board typically costs between $200 and $600, depending on the brand and age of your unit. The control board is the main circuitry that operates all of the furnace's components, making it one of the more consequential parts to fail. High-efficiency models tend to carry higher replacement costs, so it's worth confirming compatibility before ordering a part.

Flue Pipe Repair Cost

Flue pipe replacement costs between $400 and $800, depending on the pipe's length and how accessible it is. The flue is a critical safety component that carries toxic carbon monoxide and leftover combustion gases out of your home. A damaged or blocked flue poses a serious health risk, so this is a repair that should never be postponed.

Repair Cost for Relay or High Limit Switches

Relay and high limit switch repairs cost between $150 and $300 once labor and diagnostics are factored in, even though the part itself only costs between $5 and $20. This component allows electricity to reach the internal electrical parts of your furnace. The wide gap between parts cost and total cost reflects how much of this repair is driven by professional labor and diagnostic time.

Transformer Repair Cost

Furnace transformer repair totals between $100 and $175, with the part itself running $20 to $40 and labor adding another $80 to $135. The transformer converts the electrical power coming into your home into the lower voltage your furnace needs to operate. Because the labor cost makes up the bulk of this repair, it's a good candidate to bundle with other scheduled maintenance visits to reduce your overall service call cost.

Repair Cost for Oil Combustion Chambers

Oil combustion chamber replacement costs $200 to $600, while the oil chamber itself costs $100 to $200 to replace. These two components work together on oil furnaces: oil collects in the oil chamber before being transferred to the combustion chamber, where it generates heat for your home. Because both parts are specific to oil furnaces, replacement costs can vary based on parts availability and the age of your unit.

Heat Exchanger Repair Cost

Heat exchanger repairs run from $100 to $200, while a full replacement costs $500 to $1,500. This part heats the air that circulates through your home, and as it ages, it can develop cracks that allow carbon monoxide to leak indoors. Because a cracked heat exchanger poses a serious health risk, it's one repair where prompt professional attention is essential.

Repair Cost for Coils

Furnace coil replacement usually costs between $600 to upward of $2,000, making it one of the more expensive furnace repairs. The condenser or evaporator coil is technically part of the air conditioning system, but it lives inside the main furnace duct and shares the blower and ductwork. Because of the complexity involved and the cost of the part, it's worth getting a professional assessment to determine whether replacement or a full system upgrade makes more financial sense.

Repair Cost for Burners

Burner repairs cost about $150 to $450, and while burners are built to last the full lifespan of the furnace, they still require annual professional cleaning to perform reliably. The burners combine air with the furnace's fuel source to generate heat, making them central to the system's operation. Skipping annual cleanings is one of the most common reasons burners fail prematurely.

Furnace Filter Repair Cost

A new furnace filter costs about $1 to $35 and is one of the easiest furnace maintenance tasks you can handle yourself. Filters need to be changed at least every 90 days to keep your system running efficiently. Learning how to install a new furnace filter on your own saves you the cost of a service call for one of the simplest furnace tasks there is.

Common Gas Furnace Problems

According to Angi data, nearly 41% of customers reported that their gas furnace or forced air heating system doesn't provide heat or doesn't get hot enough. Other common problems include pilot light out, makes odd noises, smells funny, and cycles off too rapidly or runs constantly.

Annual Furnace Maintenance Costs

Keeping up with annual furnace maintenance is the most reliable way to prevent costly breakdowns, and a furnace inspection costs $80 to $100 on average. An advanced inspection that includes cleaning and a tuneup runs $125 to $200 and is worth the added investment for older systems or those that haven't been serviced recently. 

Replacing filters at least every 90 days adds about $4 to $140 per year, and scheduling duct cleanings every three to five years means budgeting $275 to $500 for the cost of cleaning air ducts. A furnace requires regular maintenance to operate efficiently, since dust and debris can clog burners, the pilot light, and other components over time.

Furnace Repair Costs by Location: Where Does It Vary Most?

Furnace repair costs vary based on both the parts involved and where you live. Here are some furnace repair cost estimates for a few locations:

Furnace Repair Pro Costs: What Does Labor Run?

Furnace repair labor runs $50 to $150 per hour, and you'll need to budget separately for the cost of parts. Small repairs are often billed at a $100 to $200 minimum rather than by the hour. One of the quickest jobs a technician handles is replacing a dirty filter, while more time-intensive repairs—like the blower motor, draft inducer motor, coils, or heat exchanger—will push your labor total higher.

If you need an emergency repair, be prepared to pay more (sometimes up to twice the cost). Emergency furnace repair pros charge $150 to $215 per hour on average.

Why You Should Hire a Furnace Repair Pro

Hiring a local furnace repair pro may cost more upfront, but it ensures your heating system is fixed safely, efficiently, and reliably. Furnaces involve gas, electrical components, and complex mechanical systems, and improper repairs can be dangerous or cause further damage. Professionals have the tools, training, and experience to diagnose and repair your furnace correctly, keeping your home warm and safe.

Here’s why it’s ideal to hire a furnace repair pro

Furnace repair is a specialized project that requires technical knowledge and safety precautions. Here are some of the top reasons to work with a pro:

• Technicians can accurately diagnose the root cause of your furnace issues.

• Pros handle gas, electrical, and mechanical components safely according to code.

• Working with a pro ensures repairs are done correctly to prevent repeated breakdowns.

• Professionals can identify related problems, such as dirty filters, clogged vents, or worn-out parts, before they escalate.

• Hiring a pro helps maintain system efficiency, reduce energy costs, and extend the life of your furnace.

If you want to DIY prep for a furnace repair

While repairs should be performed by a professional, you can prepare to make the process faster and more effective:

• Clear the area around your furnace to provide easy access.

• Note any symptoms, such as unusual noises, inconsistent heating, or frequent cycling, to share with the technician.

• Replace or clean the air filter before the appointment to improve airflow.

• Ensure easy access to your thermostat and circuit breakers in case the technician needs them.

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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