Is a heat pump worth it in Braintree Town?
Braintree Town technically pencils out, but only past the point the equipment would need replacing anyway. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). Braintree Town's residents would see roughly $134 a year back in running costs, putting the payback around 26.2 years. Braintree Town's own numbers say this pencils out only in theory, not in practice.
The climate behind Braintree Town's payback figure
Braintree Town has a real but manageable winter — 4997 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 885 cooling degree days. 10.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 5°F on file. Worked through the model, that's a seasonal COP of 2.96 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Braintree Town sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station NORWOOD MEMORIAL AIRPORT, 8.9 miles from Braintree Town — the closest one on record.
The month-to-month numbers for Braintree Town
A 2000-square-foot house here would pull roughly 4,275 heating kilowatt-hours annually on top of cooling, totalling about $1,516 a year on electricity. The gas furnace it replaces burns roughly 52 Mcf a year at 25.06 per Mcf here, for a running cost near $1,650 a year (electricity here runs 30.15¢/kWh). Looked at as a full purchase rather than an incremental one, payback here is roughly 101 years, leaving the 15-year total $1,495 behind.
Electric resistance heat in Braintree Town, compared
Not every home in Braintree Town has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $2,644 a year comes back this way, enough that the 3-year payback clears the $8,000 premium comfortably within the equipment's life.
Where Braintree Town ranks in this dataset
Among 3206 cities, Braintree Town's winter puts it at rank 708 for severity, while its size puts it at rank 1056 for population — 1 in both cases being the extreme. That's the coldest third of the dataset, where climate does most of the work behind this figure.
What to do with this number in Braintree Town
About 39,134 people live in Braintree Town, Massachusetts, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Every constant behind this page — the 2.96 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Braintree Town's 10.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.