How much does an electric furnace cost installed?
An electric furnace costs $2,000 to $7,000 installed, and a straightforward replacement in an existing all-electric home usually lands near $3,000 to $4,000. The furnace unit alone is $600 to $2,000 depending on its size in kilowatts and its blower quality, so labor and materials make up half or more of the bill. That total covers the cabinet, heating elements, blower, mounting, wiring to a dedicated circuit, a thermostat connection, and the permit.
Electric furnaces are the cheapest ducted heat to install because they skip everything combustion needs. There is no gas line to run, no flue or venting to cut through the roof, and no heat exchanger, so the equipment is simpler and the labor is shorter. A comparable gas furnace installed runs more, often $3,500 to $8,000, once you add gas piping and venting. If you are choosing between the two, read gas furnace vs electric furnace for the full trade-off.
What drives the price up or down?
Size is the first driver. Electric furnaces are rated in kilowatts (kW), and common residential units run from about 10 kW to 25 kW. A bigger home in a cold climate needs more kW, more heating elements, and heavier wiring, which pushes cost toward the top of the range. A small unit for a mild climate or a supplemental zone lands near the bottom.
The other big swing is your electrical service. An electric furnace draws a large load and needs a dedicated 240V circuit, often 60 to 90 amps. If your panel is full or your service is undersized, a subpanel or a service upgrade can add $1,000 to $3,000 on its own. Beyond that, expect the usual add-ons: replacing tired ductwork or sealing leaks ($1,000 to $5,000), a new thermostat ($100 to $500), and permit and inspection fees ($100 to $400). A tight attic or crawl space that makes the furnace hard to reach also raises labor.
Is it expensive to run an electric furnace?
Yes. An electric furnace is usually the most expensive ducted system to run in most of the country, because it makes heat with resistance elements the same way a space heater does. Every kilowatt-hour becomes about 3,412 BTU of heat at roughly 100% efficiency, but electricity is a costly way to buy BTUs. Expect a heating bill of $100 to $400 or more per month during the season, depending on your climate, home size, and electricity rate.
Here is the math with real numbers. At the 2026 US average of about $0.17 per kWh, a 15 kW furnace draws 15 kW whenever its elements are on. If it runs about 6 hours a day through a cold month, that is 15 kW x 6 hours x 30 days = 2,700 kWh, or roughly $460 for that month. Milder months cost far less, so a full season varies widely. The takeaway holds either way: electric resistance heat costs roughly two to four times the fuel cost of a gas furnace in most markets.
You cannot make resistance heat meaningfully cheaper, but you can shrink the load around it. A well-sealed, well-insulated house runs the furnace fewer hours, a setback thermostat cuts runtime while you sleep or work, and keeping the blower filter clean protects airflow. None of that changes the price per BTU, which is why the next question matters most.
Electric furnace vs heat pump: which costs less to run?
A heat pump costs far less to run than an electric furnace, usually half to a third as much for the same heat. Both run on electricity, but a heat pump moves heat instead of making it, delivering about 2 to 4 units of heat for every unit of electricity it draws. An electric furnace delivers 1 unit for 1 unit. That efficiency gap is the single biggest reason most all-electric homes are better served by a heat pump.
The catch is climate and upfront cost. A heat pump costs more to install and its efficiency falls in deep cold, where it may lean on backup heat (which is often electric resistance anyway). In a very cold region a heat pump paired with electric backup can be the smart setup, and in a mild region a heat pump alone usually wins outright. Weigh it with heat pump vs furnace, and read the honest disadvantages of a heat pump before you decide.
What size electric furnace do I need?
The right size comes from a Manual J load calculation, not a square-footage rule of thumb. An electric furnace is rated in kilowatts, and since 1 kW equals about 3,412 BTU per hour, sizing it means matching your home's heating load to the correct kW rating. A house with poor insulation in a cold climate needs far more kW than a tight house in a mild one, even at the same square footage, so a single sq-ft number will steer you wrong.
Do not guess at the kW yourself. Run the BTU calculator to get a fast estimate of your heating load, then have an HVAC contractor confirm it with a full load calc before they order equipment. Oversizing wastes money on the unit and the wiring and can trip breakers, while undersizing leaves you cold on the worst days. This is also why a general answer to a 2,000 square foot house does not exist; two homes that size can have very different loads.
Is an electric furnace worth it?
An electric furnace is worth it in a few clear cases: when there is no natural gas at the property, when the upfront budget is tight, when the climate is mild so it runs only a little, or when it serves as backup heat behind a heat pump. Its low install cost, long life, and simple, safe operation (no combustion, no carbon monoxide risk) are real advantages, and it is a reasonable pick for a vacation cabin, an addition, or a small mild-climate home.
In a cold climate where it would run all winter, an electric furnace is usually not the best value, because the running cost quickly outweighs the money you saved on install. In that situation a heat pump, or a high-efficiency gas furnace where gas is available, almost always costs less over the years you own it. If you are pricing a whole new system, compare the full picture in how much a new AC or system costs so heating and cooling are budgeted together.
Frequently asked questions
Is it cheaper to run an electric furnace or a heat pump?
A heat pump is much cheaper to run, typically half to a third the cost of an electric furnace for the same amount of heat. A heat pump moves heat and delivers about 2 to 4 units of heat per unit of electricity, while an electric furnace makes heat with resistance elements at a 1-to-1 ratio. In deep cold a heat pump's efficiency drops and it may use electric backup, but across a full season it still wins in most climates.
How long do electric furnaces last?
An electric furnace lasts about 20 to 30 years, longer than a typical gas furnace's 15 to 20 years. It has no combustion and no heat exchanger to crack, so there are fewer parts that fail. The heating elements and the blower motor are the usual wear items, and both are replaceable, so the cabinet often outlives several sets of elements.
Can I install an electric furnace myself?
No. An electric furnace ties into a high-amp 240V circuit and almost always requires a permit, a licensed electrician for the wiring, and an HVAC pro for the ductwork and startup. The voltage and current involved are dangerous, and unpermitted work can void your insurance and the equipment warranty. Treat this as a professional install and budget for it.
Does an electric furnace need a bigger electrical panel?
Often, yes. Electric furnaces draw a large load and need a dedicated 240V circuit, commonly 60 to 90 amps, which many older panels cannot spare. If your panel is full or your service is undersized, expect a subpanel or a service upgrade to add roughly $1,000 to $3,000. A good contractor checks your panel capacity before quoting the furnace.
What size electric furnace do I need for a 2000 square foot house?
There is no single answer, because two 2,000 square foot homes can have very different heating loads depending on climate, insulation, windows, and air sealing. Electric furnaces are sized in kilowatts to match a Manual J load calculation, not to square footage. Use the BTU calculator to estimate your heating load, then have a contractor confirm the correct kW rating before ordering.