Boston / Marion
Marion has 5,310 residents (give or take 33) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US2502338540, checked 2026-10-19), about 376 people per square mile.
Marion is about 46 miles from the Census center point for Boston in a straight line and covers 14.127 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 Marion that is 02738 (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).
Marion is spread out at 376 people per square mile across 14.127 square miles of land, so a long refrigerant line run between the outdoor unit and the farthest indoor head is the sizing question an installer checks first.
Of the 2,105 occupied homes in Marion, 33% heat with natural gas, 47% with heating oil, 3% with electricity and 15% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US2502338540, checked 2026-10-19).
Heating oil is the largest single fuel in Marion at 47%, ahead of gas at 33%, so the usual job here is an oil boiler or furnace coming out and a cold-climate heat pump going in, with the oil tank removed.
Marion has 15 points more oil heat than Plymouth County as a whole, where 32% of homes burn oil, and 9 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).
Marion has 2,631 housing units, 34% built before 1940 and 68% before 1980, with 14% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2502338540, checked 2026-10-19).
Marion has 13 points more pre-1940 homes than Plymouth County as a whole (21%) and 4 points fewer homes built after 2000 than the county's 18% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US25023, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Marion home was built in 1962 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US2502338540, checked 2026-10-19) and the median home has 6.4 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US2502338540, checked 2026-10-19).
96% of Marion homes are single-family detached, 0% are in two- to four-unit buildings and 4% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US2502338540, checked 2026-10-19).
With 96% detached houses and 0% in small multi-family buildings, a Marion quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 9% of Marion homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2502338540, checked 2026-10-19), the landlord signs the quote in many of them.
Marion has 26 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 9% of Marion homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2502338540, 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 14% of Marion homes are new enough to pass the whole-home rebate's weatherization check on age, and 34% date from before 1940, so most of the other 86% show it with a home energy assessment before the heat pump goes in.
Eversource Energy lists Marion 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 Marion 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 Marion is $143,092 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US2502338540, 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.
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 Marion 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.
Ask what happens to the oil tank, since 47% of the 2,105 occupied Marion homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; a Marion house from before 1940 (34% of the 2,631 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Marion. The public number is the number the contractor quotes from.
No local contractor is named on this door for Marion yet. A request from this page goes to the first licensed shop that takes the door.