Do heat pumps work in Frederick winters?

Frederick sees about 26 nights a year at or below 20°F. A cold-climate certified model keeps the house warm without leaning on backup heat. The average winter low is 28°F, and the heating season adds up to 4,716 heating degree days (NOAA 1991-2020 normals).

How much does it cost to run a heat pump in Frederick?

A typical 3-ton central heat pump (17.0 SEER2, 9.0 HSPF2) uses about $1,696 of electricity a year for heating and $402 for cooling in Frederick, at the Maryland average of 22.3¢/kWh. The most efficient models cost less - see the rankings above.

Is a heat pump cheaper than a gas furnace in Frederick?

Not on heating alone at today's prices: about $1,696 a year with a typical heat pump versus $1,123 with a 95% gas furnace (Maryland averages: 22.3¢/kWh, $1.56/therm). A high-HSPF2 model narrows the gap, and a heat pump also replaces the air conditioner. Against propane, oil or electric heat it is usually far cheaper.

What size heat pump do I need for a 2,000 sq ft house in Frederick?

With average insulation, roughly a 4-ton system: the estimated cooling load is 30,600 BTU/h and the heating load 46,000 BTU/h. Use the size calculator for your own house, and ask installers for a Manual J calculation.

Cold winters · Warm summers

Best heat pumps for Frederick, MD

Frederick sees about 26 nights a year at or below 20°F. A cold-climate certified model keeps the house warm without leaning on backup heat.

A typical heat pump costs about $1,696 a year to heat a house here and $402 to cool it. A 95% gas furnace would cost $1,123 for the same heat.

Nights at or below 0°F0.1 a year
Nights at or below 20°F26 a year
Days at or above 90°F24 a year
Average winter low28°F
Average summer high85°F
Electricity22.3¢ per kWh
Natural gas$1.56 per therm

Cheapest to run in Frederick

Ranked by yearly electricity cost in this climate, so the balance of heating and cooling efficiency is the one that matters here. Cold-climate certified models only.

Best 12,000 BTU mini-split

MDV MOX430-12HFN1-MZ60W

12,000 BTU mini-split · MSOP series · cold-climate certified

SEER2: 27.5
HSPF2: 14.5
Per year here: $434

For one large room.

Full specs and running cost

Best 24,000 BTU mini-split

SLIMAIR SHC24VH2AG

24,000 BTU mini-split · SHC Series · cold-climate certified

SEER2: 27.5
HSPF2: 14.5
Per year here: $867

For open-plan floor or small home.

Full specs and running cost

Best 3-ton central heat pump

TOSHIBA CARRIER MCY-MUB0368HS2P-UL

3 ton central · cold-climate certified

SEER2: 29.7
HSPF2: 12.2
Per year here: $1,481

For typical whole house.

Full specs and running cost

Running cost calculator for Frederick

Pre-filled with Frederick's climate and Maryland prices. Pick a model, tell it what you heat with today, and add your quote.

Heat pump $1,358/yrCosts more by $14/yrSee details ↓

1. Where you live

StateCityElectricity ¢ per kWh

Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

Cooling hours full-load hours per yearHeating hours full-load hours per year

2. The heat pump pick a model or type its ratings

Find a model (fills in the ratings below)

SEER2 cooling efficiencyHSPF2 heating efficiencyCooling capacity BTU/hHeating capacity BTU/h

3. What it replaces

Current heatingFurnace efficiency (AFUE %)Gas price, $/thermCurrent coolingOld AC rating SEER2 (10 ≈ 15+ years old)

4. Price replace the example with your quote

Installed price, $Rebates and incentives, $ utility, state

Heat pump, per year: $1,358
Current system, per year: $1,344
Costs more per year: $14
Payback: No payback
Net after 10 years: -$9,136

Cooling $228Heating $1,130Electricity used: 6,087 kWhSaved vs. a minimum-efficiency heat pump: $317

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

More for Frederick

Top 5 12,000 BTU mini-splitsfrom $434/yr

Model	SEER2	HSPF2	Per year
MDV MOX430-12HFN1-MZ60W	27.5	14.5	$434
Goodman MSH123G26MCAA	27.5	14.5	$434
Fujitsu AOUH12KTAP1	31.5	13.7	$444
Fujitsu AOUG12LZAS1	29.4	12.9	$472
Fujitsu AOUH12KZAH1	30.5	12.7	$475

All 12,000 BTU mini-splits

Top 5 24,000 BTU mini-splitsfrom $867/yr

Model	SEER2	HSPF2	Per year
SLIMAIR SHC24VH2AG	27.5	14.5	$867
MDV MOD30-24HFN10-M1X	22.3	13.5	$958
Arcoaire D5CSHAH24AAK	21.2	13.5	$968
Mainline ML24HP230NEXH-O	22.3	13.3	$969
ComfortStar CHF3-24CD(O)	22.3	13.3	$969

All 24,000 BTU mini-splits

Top 5 3-ton central heat pumpsfrom $1,481/yr

Model	SEER2	HSPF2	Per year
TOSHIBA CARRIER MCY-MUB0368HS2P-UL	29.7	12.2	$1,481
LG KUSXA361A	23.5	10.5	$1,744
Trane 5TWV0X36A1	21.0	10.5	$1,778
Lennox SL22KLV-036-230A	20.5	10.5	$1,786
LG KUSXB361A	22.0	10.3	$1,792

All 3-ton central heat pumps

Heat pump vs. gas, propane and oilgas is cheaper to run

Yearly cost to heat a typical house (36,000 BTU/h of heat, 1,900 full-load hours) at Maryland prices.

Natural gas furnace, 95% AFUE$1,123/yr
Natural gas furnace, 80% AFUE$1,334/yr
Heat pump (typical, 9.0 HSPF2)$1,696/yr
Propane furnace, 95% AFUE$2,993/yr
Heating oil, 85% AFUE$3,550/yr
Electric baseboard or furnace$4,472/yr

Electricity and natural gas: Maryland residential averages from the U.S. EIA; propane and heating oil: latest EIA weekly prices.

Month by monthpeak $358 in January

Heating and cooling degree days (NOAA 1991-2020 normals) and what a typical 3-ton heat pump costs in each month at 22.3¢/kWh.

Month	Heating DD	Cooling DD	Cost
January	995	0	$358
February	828	0	$298
March	671	1	$242
April	332	20	$126
May	110	93	$69
June	10	255	$86
July	0	391	$126
August	2	321	$104
September	45	145	$63
October	279	22	$107
November	573	0	$206
December	871	0	$313

What size heat pump for a Frederick home?4 ton for 2,000 sq ft

1,000 sq ft house2 ton · heating load 23,000 BTU/h
1,500 sq ft house3 ton · heating load 34,500 BTU/h
2,000 sq ft house4 ton · heating load 46,000 BTU/h
2,500 sq ft house5 ton · heating load 57,500 BTU/h

Average insulation, 8 ft ceilings. Size calculator for your own home

Questions4

Do heat pumps work in Frederick winters?: Frederick sees about 26 nights a year at or below 20°F. A cold-climate certified model keeps the house warm without leaning on backup heat. The average winter low is 28°F, and the heating season adds up to 4,716 heating degree days (NOAA 1991-2020 normals).
How much does it cost to run a heat pump in Frederick?: A typical 3-ton central heat pump (17.0 SEER2, 9.0 HSPF2) uses about $1,696 of electricity a year for heating and $402 for cooling in Frederick, at the Maryland average of 22.3¢/kWh. The most efficient models cost less - see the rankings above.
Is a heat pump cheaper than a gas furnace in Frederick?: Not on heating alone at today's prices: about $1,696 a year with a typical heat pump versus $1,123 with a 95% gas furnace (Maryland averages: 22.3¢/kWh, $1.56/therm). A high-HSPF2 model narrows the gap, and a heat pump also replaces the air conditioner. Against propane, oil or electric heat it is usually far cheaper.
What size heat pump do I need for a 2,000 sq ft house in Frederick?: With average insulation, roughly a 4-ton system: the estimated cooling load is 30,600 BTU/h and the heating load 46,000 BTU/h. Use the size calculator for your own house, and ask installers for a Manual J calculation.

Nearby cities

Climate: NOAA 1991-2020 normals, station HAGERSTOWN WASHINGTON CO AP (41 km away).