Will a heat pump pay off in Attleboro, MA?
Attleboro technically pencils out, but only past the point the equipment would need replacing anyway. $3,500 is what Attleboro would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Lower bills claw that back: about $84 saved annually, for a payback of roughly 41.8 years. That's a technicality, not a recommendation, for anyone actually living in Attleboro.
How cold Attleboro actually gets
Degree days tell the story here: Attleboro racks up 5467 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 573 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 10°F here (record low 3°F), which works out to a seasonal COP of 2.94 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Attleboro sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station NORTH CENTRAL STATE ARPT, 10.1 miles from Attleboro — the closest one on record.
The month-to-month numbers for Attleboro
Electricity use for heating alone comes out to about 4,709 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,567 a year. That compares with roughly 57 Mcf a year of gas at Attleboro's 25.06 per-Mcf rate — about $1,651 a year — against a local electricity rate of 30.15¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 161.1 years, for a 15-year net position $2,243 behind.
Electric resistance heat in Attleboro, compared
Plenty of homes in Attleboro heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Attleboro's answer improves. About $2,831 a year comes back this way, enough that the 2.8-year payback clears the $8,000 premium comfortably within the equipment's life.
Attleboro against the rest of the country
Ranked against the other 3206 cities covered, Attleboro comes in at 398 for heating severity — 1 would be the coldest place in the dataset — and 871 by population, where 1 is largest. 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 Attleboro
Attleboro, Massachusetts is home to about 47,085 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 Attleboro, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
The methodology guide walks through exactly how Attleboro's 2.94 seasonal COP and the rest of this page's numbers get built. Attleboro's 10°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.