The short answer
Cost per dryer load: resistance electric $0.65, gas $0.30, heat-pump electric $0.25. Annual cost (285 loads): resistance $185, gas $85, heat-pump $70. Heat-pump dryers are the cheapest to run but cost $400-$700 more upfront. Cleaning the lint trap every load and the vent line annually prevents 30%+ runtime increase.
A US household uses the clothes dryer about 285 times/year on average. Each load runs 2-6 kWh of electricity (resistance) or 0.18 therms of gas plus 0.4 kWh of electricity (gas dryer). The fuel choice and the dryer technology together drive total annual cost from $40 (heat-pump electric) to $130 (gas) to $200+ (resistance electric).
Cost per load by dryer type
Resistance electric (most common US dryer): heats air with electric resistance coils. Uses 4 kWh/load on a 60-minute cycle. At 17¢/kWh, ~$0.65/load. Annual cost: ~$185.
Gas: heats air with a natural-gas burner; uses electricity only for the drum motor. 0.18 therms gas + 0.4 kWh per load. ~$0.30/load. Annual cost: ~$85.
Heat-pump electric: uses a heat-pump compressor to dehumidify air without venting. 1.5 kWh/load. ~$0.25/load. Annual cost: ~$70.
Maintenance — clean lint trap, clean vent, fix duct leaks
Lint trap: clean every load. Skipping this raises drying time 30%+ and is the leading cause of dryer fires.
Vent line: clean once a year. A clogged vent line raises drying time 20-30%. Cost: $30-50 for a vent-cleaning brush kit DIY, or $80-150 for a pro service.
Duct leaks: leaks in the vent ducting let dryer air escape into the wall cavity, raising drying time. Replace flexible ducts every 5-10 years.
Heat-pump dryer payback math
Heat-pump dryers run $1,200 to $1,800 retail — about $400 to $700 more than a comparable resistance dryer. Federal tax credits for heat-pump dryers expired in 2025, but state rebates ($100 to $500) still apply in California, Massachusetts, New York, and a handful of other states with active electrification programs.
Annual savings vs resistance: about $115 per year for a typical 285-load household at 17 cents per kWh. Payback (without state rebates): 3.5 to 6 years. With state rebates: 2.5 to 4.5 years. The math improves further in high-electricity-cost regions like New York City and California.
Bonus benefit: heat-pump dryers do not require an exterior vent, so they can be installed in apartments and other ventless spaces. They are also gentler on fabrics because they operate at lower temperatures, which extends garment life. The how-to-lower-your-electric-bill guide covers the broader appliance efficiency ladder.
Infographic
Annual operating cost — dryer technology comparison
Install considerations and existing-home retrofit
For homes with existing 240V dryer outlets and exterior vents, swapping a resistance dryer for a heat-pump dryer is a plug-and-play replacement. No electrical or vent work needed. The new heat-pump unit just sits where the old resistance dryer sat.
For homes converting from gas to heat-pump electric, electrical work is usually required (240V outlet on a dedicated 30-amp circuit). Cost: $200 to $600 for the electrical work, depending on panel proximity. Most utilities rebate the electrical work as part of electrification programs.
For apartments and other ventless installations, heat-pump dryers do not require an exterior vent because they recapture moisture into a condensate tray (emptied manually or pumped to a drain). This is a major advantage for compact installs but adds a maintenance step.
Recap
Bottom line
The choice of clothes dryer technology has a meaningful impact on annual energy costs. Resistance electric dryers are the default in most US homes but cost roughly twice as much to operate as gas dryers and 4 to 5 times as much as modern heat-pump dryers. For households doing 5+ loads per week, the technology choice translates to $80 to $200 of annual energy cost difference.
For most households due for dryer replacement, heat-pump electric is the cleanest play if your utility costs and rebate eligibility support it. Federal IRA programs may not cover dryers directly, but state utility rebates often cover 20 to 50 percent of the cost premium. The how-to-lower-your-electric-bill guide covers the broader appliance ladder; the water-heater-types-tankless-vs-tank guide covers the analogous decision for water heating.
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