How Heat Pump Dryers Work
A conventional dryer — gas or electric — blows hot air through clothes and exhausts the humid air outside through a vent duct. A heat pump dryer recirculates air through a closed loop: it heats air with a refrigerant-based heat pump, passes it through the drum, then extracts moisture from the exhaust air and reuses the heat. The result is 40–50% less electricity consumed per load, and no vent duct required.
The no-vent advantage is significant for apartments, condos, and homes where running a vent duct is difficult or impossible. It also means heat pump dryers don't pull conditioned air from the home in winter (conventional dryers can add meaningfully to heating costs in cold climates by exhausting warm indoor air).
Gas Dryer: No Longer a Clear Cost Advantage
At average U.S. gas prices ($1.70/therm) and electricity rates (18¢/kWh), a gas dryer costs about $0.34 per load — roughly $87/year at 5 loads/week. A heat pump dryer at 800W average draw costs about $0.34/load — about $88/year at the same usage. The two are now essentially tied on operating cost; gas no longer carries the meaningful per-load edge it once did, so the heat pump dryer's other advantages (no vent duct, gentler on fabrics, lower peak electricity draw) become the more relevant differentiators for most households.
In high-electricity-rate states like California (25¢/kWh) or Hawaii (40¢/kWh), the math flips: gas dryers maintain their per-load advantage if gas is available, but all-electric homes with heat pump dryers beat conventional electric dryers significantly. For a full breakdown of dryer running costs by type, see our dryer cost guide or use the Dryer Energy Cost Calculator.
Tax Credit vs. Rebate: Get This Distinction Right
Clothes dryers — gas, electric, or heat pump — have never been eligible for the federal Section 25C tax credit; that credit only ever covered HVAC heat pumps, heat pump water heaters, insulation, windows, and doors, and it expired entirely for equipment placed in service after December 31, 2025 (One Big Beautiful Bill Act). The $840 figure often quoted for heat pump dryers comes from a different program: HEEHRA/HEAR, a federally funded but state-administered rebate for income-qualified households (under 150% of area median income), applied as a point-of-sale discount rather than claimed on your taxes. Unlike 25C, HEEHRA/HEAR did not have a fixed December 2025 expiration — it's still rolling out state by state through 2026, though some states (like California) have already exhausted their allocation. Check your state's program status before assuming the rebate is available.
Which Should You Choose?
Choose a gas dryer if: you have gas service, do heavy laundry (8+ loads/week), and want the lowest possible running cost regardless of upfront price. Choose a heat pump dryer if: you're in an all-electric home, your electricity rate is above 20¢/kWh, you don't have a vent duct, or you qualify for a HEEHRA rebate in a state where funding is still available. Avoid conventional electric dryers for new purchases — heat pump dryers are close enough in price that the efficiency difference makes conventional electric the worst long-term value in most markets.