How much does it cost to fix a furnace that won't heat in Virginia?

There is no set price in Virginia. Licensed HVAC businesses set their own rates, and the bill for a furnace that won't heat comes down to two things: the visit to find the cause, and what failed. A thermostat setting or a clogged filter costs little beyond the visit. A failed igniter, flame sensor, gas valve, blower motor or control board is a part plus the labour to fit it. You keep the bill fair by ruling out the free causes first and getting the diagnosis and an itemized price in writing before work starts.

Rule out the causes that cost nothing

Several no-heat calls end with a setting, not a part. Carrier says the most common cause of a furnace blowing cold air is a thermostat fan set to "On" instead of "Auto."^[1] Bryant's basic checks before scheduling service are the thermostat, the air filter, open and unobstructed supply registers and return grilles, and power: the furnace power switch and the circuit breaker.^[2] Bryant's limit on that last one is firm: "If a breaker repeatedly trips, do not continue resetting it; contact a qualified HVAC professional."^[2]

Check the fuel too. Carrier notes that for oil or propane furnaces, an empty tank can be the cause,^[1] and the fix is a delivery, not a repair. For what each symptom points to, see why a furnace runs but does not heat.

If you smell gas, skip all of this. Leave the house and call 911 and your gas company from outside. Columbia Gas will send someone to check the source of a gas odor free of charge, whether there is a leak or not.^[7]

What makes up the bill

The diagnostic visit. Most businesses charge to come out and find the problem. Ask before booking what the fee covers, whether it is higher at night, on weekends or in a cold snap, and whether it comes off the repair if you go ahead. On Loclis, a paid service call opens a repair whose fee comes off the repair price.

The part that failed. When the furnace itself is at fault, the price follows the part. The ones Carrier and Bryant name for a furnace that runs without heating are a failed pilot light or electronic ignition, a dirty or faulty flame sensor, a high-limit switch that has shut the burners down, a faulty gas valve, a failing blower motor and a failing control board.^[1][2] On high-efficiency furnaces there is one more: some gas furnaces have condensate drain lines, and a blockage in them could deactivate the burners.^[3] A sensor cleaning or a drain clearing is usually a short job; a gas valve, blower motor or control board is a larger part with more labour. Ask whether the part is still under the manufacturer's warranty.

Safety checks on a gas or oil furnace. Combustion work takes time an electric furnace does not need. ENERGY STAR's heating check-up covers checking all gas (or oil) connections, gas pressure, burner combustion and the heat exchanger.^[4] If the technician finds a cracked heat exchanger, the conversation changes: a dirty burner or cracked heat exchanger causes improper burner operation,^[4] and on an older furnace the repair-or-replace question comes up quickly.

Access and return trips. A furnace in an open basement is quicker to work on than one in a crawl space or an attic, and a part that has to be ordered means a second visit. Ask whether the return trip is charged.

The furnace's age. ENERGY STAR suggests it may be time to consider replacing a furnace or boiler that is more than 15 years old, or equipment that needs frequent repairs while energy bills go up.^[5] Before approving a large repair on an old unit, read should I repair or replace my furnace.

Getting a price you can compare

ENERGY STAR's advice is short: "Get written, itemized estimates".^[6] For a no-heat repair, ask each business for:

• the cause in plain words, and what they tested to find it;
• the part, the labour and any trip, after-hours or return-visit charge on separate lines;
• whether the diagnostic fee comes off the repair;
• the warranty on the part and on the work;
• whether the furnace is safe to run until the repair is done, and if not, why.

Licence. In Virginia, Class C contractors take on work where a single contract or project is over $1,000 but less than $30,000, or where all their work in any 12-month period totals less than $250,000, and the Board for Contractors must require a master tradesman licence as a condition of licensing an HVAC contractor.^[11] Separately, the person doing the work must hold a tradesman licence unless working under the supervision of a tradesman licensed in that specialty.^[12] See does an HVAC technician need a licence in Virginia.

Contract. Virginia's Board for Contractors requires a legible written contract for residential contracting, signed by both the consumer and the contractor before work starts or payment is accepted.^[10] The rule defines residential contracting to include repair to a home, and the only people it excludes are subcontractors and those who do routine maintenance or service contracts.^[10] So ask for the contract before a repair starts, not an invoice afterwards. Among its required terms are a statement of the total cost, the contractor's name, address, licence number and class, and a statement that any change to the cost, materials, work or completion date must be in writing and signed by all parties.^[10]

For a general look at furnace repair bills, see how much furnace repair costs in Virginia.

Help paying for a no-heat repair

When we checked on 26 October 2026, the Virginia Department of Social Services' Crisis Assistance listed heating equipment repair or replacement among the help it may give households with a heating emergency, which it describes as no heat, a cut-off notice or unsafe equipment.^[8] Households must have a heating or cooling expense and a gross monthly income at or below 150% of the federal poverty level.^[8] The application window for equipment help runs from November 1 to March 15.^[8] Fuel Assistance, which offsets heating costs, has its own window, from the second Tuesday in October to the second Friday in November.^[8] Applications go through CommonHelp online, by phone at 855-635-4370, or on a paper form.^[8]

DHCD's Weatherization Assistance Program works through a network of local nonprofit providers, and its measures include repairing and replacing inefficient or unsafe heating and cooling systems.^[9] Contact the provider for the area where the home is.

When to call a licensed pro

Once the thermostat, filter, power and fuel are ruled out, the rest is inside the furnace, and waiting rarely makes it cheaper. Call the same day when:

• You smell gas or a carbon monoxide alarm sounds: leave first, then call 911 and the gas company.
• The breaker trips when the furnace runs.
• The burners light and then quit, or the furnace shows a blinking fault light.
• The house is losing heat in weather cold enough to freeze pipes.

To see what the technician does once there, read what happens during a furnace repair visit. A yearly check-up costs less than most no-heat calls; see what to check on your furnace before winter.

Getting quotes in Virginia

Loclis lists DPOR-licensed HVAC businesses with their licence number and class. Find HVAC businesses in Blacksburg or another town, see furnace not heating repairs, or browse more HVAC repair answers. A business can answer "I need to see it first" with an estimate visit, and a paid visit's fee comes off its price.

Describe what the furnace is doing once and licensed local HVAC businesses quote the repair.