What a dehumidifier costs to run in Pennsylvania
Pennsylvania homes use 1,045 kWh a year on a dehumidifier. Priced on top of the rest of the bill, that costs $104.40 to $234.36 a year across 11 published Pennsylvania plans — a $129.96 gap. Checked September 2, 2026.
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Every priced plan, average
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| Residential Service Add-On Heat Pumptime-of-use · needs a heat pump | $72.29 | −$32.11 | 8.4¢ |
| Residential Service Heatingtime-of-use · needs electric heating | $100.56 | −$3.84 | 11.2¢ |
| Residential Service✓ cheapestflat rate | $104.40 | — | 11.5¢ |
| Residential Heating Service (RH)time-of-use · needs electric heating | $105.28 | +$0.88 | 11.4¢ |
| Residential Service (R)flat rate | $121.68 | +$17.28 | 13.0¢ |
| Residential Service Add-On Heat Pumptime-of-use · needs a heat pump | $204.30 | +$99.90 | 21.1¢ |
| Residential Heating Service (RH)time-of-use · needs electric heating | $212.28 | +$107.88 | 21.6¢ |
| Residential Service Heatingtime-of-use · needs electric heating | $218.34 | +$113.94 | 22.4¢ |
| Residential Service (R) - TOUtime-of-use | $225.27 | +$120.87 | 22.9¢ |
| Residential Service (R)flat rate | $228.60 | +$124.20 | 23.2¢ |
| Residential Serviceflat rate | $234.36 | +$129.96 | 23.9¢ |
Cost across usage levels
The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.
- Lighter use — cheapest $38.52 (Residential Service), dearest $86.64, a $48.12 spread
- Average — cheapest $104.40 (Residential Service), dearest $234.36, a $129.96 spread
- Heavier use — cheapest $161.40 (Residential Service), dearest $362.04, a $200.64 spread
What a dehumidifier costs here
Across 11 plans priced in Pennsylvania, a dehumidifier adds $104.40 to $234.36 a year — $8.70 to $19.53 a month. The median plan puts a dehumidifier at $225.27 a year.
Cheapest for a dehumidifier: Residential Service, Duquesne Light Co. Dearest: Residential Service, Duquesne Light Co.
Those 1,045 kWh are billed at 10.0¢–22.4¢, against a 22.9¢ whole-bill average on the median plan, so on these plans the two rates are close.
What Pennsylvania homes use
EIA's 2020 residential survey found 1,045 kWh a year across 224 sampled homes that run one, near the national 999 kWh. The middle half spans 386 kWh to 1,614 kWh, so a dehumidifier varies by 1,228 kWh between one household and another.
Portable and whole-home dehumidifiers. That average covers homes with a dehumidifier — 34% of homes here, against 17% nationally.
That makes a dehumidifier about 10% of the electricity a Pennsylvania home uses. The remaining 9,203 kWh is what a dehumidifier is billed on top of, and on a tiered or time-of-use plan that is what sets the rate it meets.
By provider
On each Pennsylvania provider's cheapest plan: Duquesne Light Co, $104.40; PECO Energy Co, $121.68.
PECO Energy Co charges $17.28 a year more than Duquesne Light Co on Residential Service for the same 1,045 kWh.
Light and heavy use of a dehumidifier
A household in the lighter quarter runs a dehumidifier for 386 kWh a year and pays $38.52 on the cheapest plan. One in the heavier quarter runs it for 1,614 kWh and pays $161.40 — $122.88 more for a dehumidifier on the same tariff.
Limits
A 2020 survey average for Pennsylvania, not a measurement of any one home, priced against the 11 Pennsylvania tariffs WattClear has ingested — not every plan sold there.
New to these terms? The methodology page explains tiered bands, time-of-use periods and fixed charges, and sets out exactly what the rate engine assumes.
Estimate — your actual bill may differ.
Tariff structures from NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved September 2, 2026.
Location resolved through the US Census Bureau Geocoder (Public domain) at 40.4406, -79.9959.