Do heat pumps work in New Bedford winters?

New Bedford sees about 38 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 23°F, and the heating season adds up to 5,860 heating degree days (NOAA 1991-2020 normals).

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

A typical 3-ton central heat pump (17.0 SEER2, 9.0 HSPF2) uses about $2,857 of electricity a year for heating and $257 for cooling in New Bedford, at the Massachusetts average of 30.4¢/kWh. The most efficient models cost less - see the rankings above.

Is a heat pump cheaper than a gas furnace in New Bedford?

Not on heating alone at today's prices: about $2,857 a year with a typical heat pump versus $2,155 with a 95% gas furnace (Massachusetts averages: 30.4¢/kWh, $2.42/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 New Bedford?

With average insulation, roughly a 5-ton system: the estimated cooling load is 27,600 BTU/h and the heating load 54,000 BTU/h. Use the size calculator for your own house, and ask installers for a Manual J calculation.

Cold winters · Mild summers

Best heat pumps for New Bedford, MA

New Bedford sees about 38 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 $2,857 a year to heat a house here and $257 to cool it. A 95% gas furnace would cost $2,155 for the same heat.

Nights at or below 0°F1.3 a year
Nights at or below 20°F38 a year
Days at or above 90°F7.2 a year
Average winter low23°F
Average summer high80°F
Electricity30.4¢ per kWh
Natural gas$2.42 per therm

Cheapest to run in New Bedford

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: $644

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: $1,288

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: $2,255

For typical whole house.

Full specs and running cost

Running cost calculator for New Bedford

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

Heat pump $2,050/yrCosts more by $52/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: $2,050
Current system, per year: $1,998
Costs more per year: $52
Payback: No payback
Net after 10 years: -$9,525

Cooling $146Heating $1,904Electricity used: 6,747 kWhSaved vs. a minimum-efficiency heat pump: $439

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 New Bedford

Top 5 12,000 BTU mini-splitsfrom $644/yr

Model	SEER2	HSPF2	Per year
MDV MOX430-12HFN1-MZ60W	27.5	14.5	$644
Goodman MSH123G26MCAA	27.5	14.5	$644
Fujitsu AOUH12KTAP1	31.5	13.7	$672
Fujitsu AOUG12LZAS1	29.4	12.9	$714
Fujitsu AOUH12KZAH1	30.5	12.7	$723

All 12,000 BTU mini-splits

Top 5 24,000 BTU mini-splitsfrom $1,288/yr

Model	SEER2	HSPF2	Per year
SLIMAIR SHC24VH2AG	27.5	14.5	$1,288
MDV MOD30-24HFN10-M1X	22.3	13.5	$1,400
Arcoaire D5CSHAH24AAK	21.2	13.5	$1,407
Comfort-Aire A-VHP24SA-1	21.0	13.5	$1,409
Mainline ML24HP230NEXH-O	22.3	13.3	$1,420

All 24,000 BTU mini-splits

Top 5 3-ton central heat pumpsfrom $2,255/yr

Model	SEER2	HSPF2	Per year
TOSHIBA CARRIER MCY-MUB0368HS2P-UL	29.7	12.2	$2,255
LG KUSXA361A	23.5	10.5	$2,635
Trane 5TWV0X36A1	21.0	10.5	$2,657
Lennox SL22KLV-036-230A	20.5	10.5	$2,662
Lennox EL21KLV-036-230A	20.0	10.4	$2,691

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, 2,350 full-load hours) at Massachusetts prices.

Natural gas furnace, 95% AFUE$2,155/yr
Natural gas furnace, 80% AFUE$2,559/yr
Heat pump (typical, 9.0 HSPF2)$2,857/yr
Propane furnace, 95% AFUE$3,500/yr
Heating oil, 85% AFUE$4,397/yr
Electric baseboard or furnace$7,535/yr

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

Month by monthpeak $530 in January

Heating and cooling degree days (NOAA 1991-2020 normals) and what a typical 3-ton heat pump costs in each month at 30.4¢/kWh.

Month	Heating DD	Cooling DD	Cost
January	1,088	0	$530
February	944	0	$460
March	849	0	$414
April	544	1	$266
May	270	13	$137
June	67	87	$72
July	6	225	$103
August	13	186	$89
September	113	59	$81
October	390	7	$193
November	648	0	$316
December	928	0	$453

What size heat pump for a New Bedford home?5 ton for 2,000 sq ft

1,000 sq ft house2.5 ton · heating load 27,000 BTU/h
1,500 sq ft house3.5 ton · heating load 40,500 BTU/h
2,000 sq ft house5 ton · heating load 54,000 BTU/h
2,500 sq ft house5+ ton · heating load 67,500 BTU/h

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

Questions4

Do heat pumps work in New Bedford winters?: New Bedford sees about 38 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 23°F, and the heating season adds up to 5,860 heating degree days (NOAA 1991-2020 normals).
How much does it cost to run a heat pump in New Bedford?: A typical 3-ton central heat pump (17.0 SEER2, 9.0 HSPF2) uses about $2,857 of electricity a year for heating and $257 for cooling in New Bedford, at the Massachusetts average of 30.4¢/kWh. The most efficient models cost less - see the rankings above.
Is a heat pump cheaper than a gas furnace in New Bedford?: Not on heating alone at today's prices: about $2,857 a year with a typical heat pump versus $2,155 with a 95% gas furnace (Massachusetts averages: 30.4¢/kWh, $2.42/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 New Bedford?: With average insulation, roughly a 5-ton system: the estimated cooling load is 27,600 BTU/h and the heating load 54,000 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 NEW BEDFORD MUNI AP (3 km away).