Heat Pump Payback in Manchester, NH
Will a heat pump pay off in Manchester, NH?
Manchester is a place where a heat pump genuinely costs more to operate than the alternative. $5,500 is what Manchester would pay extra to go electric rather than replace the furnace and AC with the same again. Unfortunately the electric bill outweighs the gas bill it replaces by about $91 a year here, so the extra spend stays unrecovered. That's Manchester's own climate and rates talking, not a hedge or a caveat.
Checking a different city
This runs the same numbers for 3206 US cities, not just Manchester. Look one up here.
How cold Manchester actually gets
5422 heating degree days pile up here every year, so Manchester has a cold winter that leans hard on heating equipment; the cooling side runs to 926 cooling degree days, where summers add a moderate cooling load. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 10°F, and the coldest daily reading in the 2024 station record was 3.9°F. That puts the seasonal coefficient of performance at 2.94 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Manchester sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, Manchester Airport, 3.8 miles from Manchester.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 4,670 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,463 a year. That compares with roughly 56 Mcf a year of gas at Manchester's $18.61 per-Mcf rate, about $1,373 a year with the old AC included, against a local electricity rate of 26.80¢/kWh. Because the heat pump costs more to run here, the gap only widens with time: $6,859 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Manchester's result is to prices
For the verdict in Manchester to flip, electricity would need to drop to about 24.7¢/kWh from 26.80¢, or gas climb past $20.21 per Mcf from $18.61. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Manchester; the case for one here rests on comfort, cooling, or replacing electric heat instead.
If your home heats with electric baseboard instead of gas
Plenty of homes in Manchester heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $2,538 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 3.9 years.
How Manchester compares nationally
Ranked against the other 3206 cities covered, Manchester comes in at 421 for heating severity, 1 would be the coldest place in the dataset, and 263 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Deciding what's next in Manchester, NH
Manchester, New Hampshire is home to about 116,386 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Manchester, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Manchester's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Manchester's 2.94 seasonal COP and payback figure. Manchester's 10°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.