aquaArts studio / Getty Images

Furnace repair costs average about $270 per visit.

While more expensive than annual maintenance, furnace repair is still significantly less expensive than replacing the furnace.

Most furnace repairs cost between $140 and $400.

Repair Furnace

aquaArts studio / Getty Images

“Costs can vary quite a bit, but this covers most issues.”

Want more home reno project tips and inspiration?

Some heat exchangers may be able to be replaced for $500 to $1,500.

The heat exchanger is the core furnace part that heats up.

The heat exchanger works with the blower motor to push heated air into your home.

Repairing a blower motor costs from $150 to $450, for an average cost of $300.

The blower motor pushes hot air from the heat exchanger through the home’s ductwork.

Cool air in the home is cycled back to the furnace through the air return duct.

A blocked gas valve can easily be cleared.

In most cases, it’s best to entirely replace the gas valve to prevent future problems.

A control board receives signals from the thermostat and translates them into the furnace’s heating cycle.

Moisture can ruin a furnace’s control board, making replacement necessary.

Replace Draft Inducer Motor

Replacing a furnace’s draft inducer motor costs about $1,115.

Draft inducer motor replacement may cost as little as $725 or as much as $1,500.

The draft inducer motor is an air blower that sucks in fresh air for combustion and expels carbon monoxide.

The ignitor is the spark that ignites gas or propane to heat your home.

Gas ignitors have limited lifespans that are often engineered into the product by the manufacturer.

Fortunately, this is a fairly simple replacement by HVAC technicians.

Replace Thermocouple

The average cost of replacing a furnace thermocouple is about $190.

Thermocouple replacements range from a low of $125 to a high of $250.

This prevents gas leaks and carbon monoxide poisoning.

Replace Furnace Coil

Expect to pay an average of $1,300 to replace a furnace coil.

Furnace coil replacements start at around $600 and range up to $2,000 per project.

The transformer steps down high voltage electricity so it can be used by your furnace.

Transformers fail mostly due to electrical surges or shorts.

Replace Thermostat

Expect to pay an average of $325 to replace a thermostat.

The costs range from $110 to $540 per thermostat replacement.

We’ve tested various options from the top brands to bring you thebest thermostats.

Best Time to Repair Your Furnace

Emergency furnace repairs critical to safety should be done immediately.

Maintenance Costs

The best way to limit furnace repair costs is goodpreventative maintenance.

Expect to pay about $120 for annual furnace maintenance, Pen says.

Changing air filtersevery one to three months will ensure proper airflow, Woodruff says.

A clogged filter can restrict airflow and reduce your system’s efficiency.

When to Replace a Furnace

When repairs become too costly or frequent,consider replacing the furnace.

In addition, consider replacing your furnace when:

Furnace Repair vs.

Replacement Costs

Most furnace repair costs are worthwhile when compared tofurnace replacement costs.

DIY vs.

Pro Repair Costs

“Most issues require a trained technician and special tools,” Woodruff says.

So, it’s common for homeowners to leave furnace repairs to the professionals.

The cost to replace the heat exchanger or blower motor is around $2,000.

Replacing a draft inducer motor costs just over $1,000.

Given the high cost of replacing a furnace, it’s usually worth it to fix a furnace.

How Much Does The Average Furnace Repair Cost?Forbes Home.