Boston / Pembroke

Heat pump installation in Pembroke, MA - up to $8,500 Mass Save rebate

Pembroke in Plymouth County

Pembroke has 18,382 residents (give or take 25) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US2502352630, checked 2026-10-19), about 844 people per square mile.

Pembroke is about 22 miles from the Census center point for Boston in a straight line and covers 21.786 square miles of land (Census 2024 Gazetteer internal points and land area, https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2024_Gazetteer/, checked 2026-10-19).

The quote form takes a ZIP code; for Pembroke that is 02359 (Census 2020 ZCTA to county subdivision relationship file, ZIP areas at least 20% inside the town, https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_cousub20_natl.txt, checked 2026-10-19).

Fuel mix

Of the 6,900 occupied homes in Pembroke, 52% heat with natural gas, 32% with heating oil, 8% with electricity and 5% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US2502352630, checked 2026-10-19).

Gas leads in Pembroke at 52%, but 37% of homes still burn delivered oil or propane, and those 2,553 or so homes are where a heat pump pays back fastest.

Pembroke has about the Plymouth County oil share of 32% and 4 points less electric heat than the county's 12% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US25023, checked 2026-10-19).

Housing stock

Pembroke has 7,143 housing units, 8% built before 1940 and 59% before 1980, with 17% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2502352630, checked 2026-10-19).

Pembroke has 13 points fewer pre-1940 homes than Plymouth County as a whole (21%) (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US25023, checked 2026-10-19).

The median Pembroke home was built in 1974 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US2502352630, checked 2026-10-19) and the median home has 6.8 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US2502352630, checked 2026-10-19).

83% of Pembroke homes are single-family detached, 4% are in two- to four-unit buildings and 7% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US2502352630, checked 2026-10-19).

With 83% detached houses and 4% in small multi-family buildings, a Pembroke quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 10% of Pembroke homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2502352630, checked 2026-10-19), the landlord signs the quote in many of them.

Pembroke has 13 points more detached houses than Plymouth County overall (70%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US25023, checked 2026-10-19).

Only 10% of Pembroke homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2502352630, checked 2026-10-19), so nearly every quote here is the resident talking to the installer directly, and the rebate goes to the person living in the house.

Only 17% of Pembroke homes are new enough to pass the whole-home rebate's weatherization check on age, and 8% date from before 1940, so most of the other 83% show it with a home energy assessment before the heat pump goes in.

Rebate path

Eversource Energy lists Pembroke among the Massachusetts communities it serves for electricity (Eversource Energy communities we serve, https://www.eversource.com/residential/services/communities-we-serve, checked 2026-10-19).

For a Pembroke address billed by Eversource Energy, the Mass Save whole-home heat pump rebate is $2,650 per ton up to $8,500, and the partial-home rebate is $1,125 per ton up to $8,500; for projects installed on or after January 1, 2027, the whole-home figure drops to $2,350 per ton capped at $7,500 (Mass Save air-source heat pump rebates, https://www.masssave.com/residential/rebates-offers-services/heating-and-cooling/heat-pumps/air-source-heat-pumps, checked 2026-10-19).

Median household income in Pembroke is $146,285 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US2502352630, checked 2026-10-19); Mass Save's enhanced heat pump incentives are income-based and decided household by household, so the town median only hints at how many neighbors qualify.

Cold-day number

Heating design temperature: 9F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Plymouth County row, 99% heating, PDF page 56 of 141 (Revised 11/11/2020), https://www.energystar.gov/sites/default/files/Design%20Temperature%20Limit%20Reference%20Guide%20(2019%20Ed)%20-%20ENERGY%20STAR%20Single-Family%20New%20Homes_Rev11.pdf, fetched 2026-10-19, 99%.

That 9F figure is the Plymouth County cold-day number a Pembroke heat pump is sized against, so ask the installer to show the system's heating output at 9F, not at the milder rating-label temperature.

Next step

Ask whether the quote is whole-home or partial-home, because with 52% of Pembroke on gas and 8% already electric the two paths carry different rebate figures and different sizing.

Ask for the heat-loss calculation room by room; the median Pembroke home has 6.8 rooms and was built around 1974, and the count of heads and the tonnage follow the rooms and the insulation, not the square footage.

The form on this page is the follow-up for Pembroke. The public number is the number the contractor quotes from.

No local contractor is named on this door for Pembroke yet. A request from this page goes to the first licensed shop that takes the door.

Where should the follow-up go?

We will follow up by email. No calls.

No spam, no sold information. One follow-up about exactly this request.