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How Much Does It Cost to Run a Space Heater in New Mexico? (2026)

Portable electric space heaters are one of the most expensive appliances to run per hour. Almost all plug-in models top out at 1,500 watts because that is the limit of a standard household outlet, so the main cost driver is how many hours you leave it on.

A typical space heater (1,500 W) costs $0.22 per hour, or about $40.50 per month at 6 hours a day in New Mexico. Expensive to run

Electricity price region Hours used per day

Wattage	Per hour	Per day	Per month	Per year
Low (750 W)	$0.11	$0.67	$20.25	$246.38
Typical (1,500 W)	$0.22	$1.35	$40.50	$492.75
High (1,500 W)	$0.22	$1.35	$40.50	$492.75

Formula: watts ÷ 1000 × hours × price per kWh. Typical use is 6 h/day ≈ 3,285 kWh per year.

One hour of a space heater (1.5 kWh) is the same electricity as

8.3km in an electric car
15hours of TV
33hours of a laptop
167hours of an LED bulb

Annual electricity at typical use, log scale. #88 of 95 appliances, from cheapest to most expensive.

In New Mexico, with electricity at $0.15 per kWh (source: EIA Table 5.6.A, 2026-06), a typical space heater costs $0.22 per hour and about $492.75 per year at 6 hours a day. That is about 17% less than the national average for the US ($48.60 per month), because electricity in New Mexico costs $0.15 per kWh against $0.18 nationally. Each $1.00 of electricity buys roughly 4.4 hours of use.

How to lower the cost of running a space heater

Heat only the room you are in and close the door. A space heater warming a whole house costs more than central heating.
Use the low setting (usually 750 W) once the room is warm. It halves the running cost.
Pair it with a plug-in timer or a smart plug so it never runs overnight by accident.
A heater with a thermostat cycles on and off, so real consumption is often 30 to 50 percent below the rated wattage.

Frequently asked questions

Does a space heater use a lot of electricity?

Yes. At 1,500 watts it draws as much as a microwave, and it usually runs for hours rather than minutes.

Is it cheaper to run a space heater or central heating?

For a single small room, the space heater is usually cheaper. For more than one or two rooms, central heating wins.

Are oil-filled heaters cheaper to run?

Not per hour. All resistive heaters convert electricity to heat at the same efficiency. Oil-filled models just hold heat longer after switching off.

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