Manchester / Merrimack
Merrimack is about 10 miles from the Census center point for Manchester in a straight line and covers 32.592 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).
Merrimack has 28,164 residents (give or take 27) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US3301147540, checked 2026-10-19), about 864 people per square mile.
The quote form takes a ZIP code; for Merrimack that is 03054 (Census 2020 ZCTA to county subdivision and ZCTA to place relationship files, ZIP areas at least 20% inside the town, https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_cousub20_natl.txt and https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_place20_natl.txt, checked 2026-10-19).
Of the 10,844 occupied homes in Merrimack, 36% heat with natural gas, 30% with heating oil, 11% with electricity and 19% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US3301147540, checked 2026-10-19).
Merrimack has about the Hillsborough County oil share of 29% and 1 points less electric heat than the county's 12% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US33011, checked 2026-10-19).
Gas leads in Merrimack at 36%, but 49% of homes still burn delivered oil or propane, and those 5,314 or so homes are where a heat pump pays back fastest.
The median Merrimack home was built in 1985 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US3301147540, 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=060XX00US3301147540, checked 2026-10-19).
Merrimack has 11,145 housing units, 4% built before 1940 and 33% before 1980, with 16% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US3301147540, checked 2026-10-19).
Merrimack has 14 points fewer pre-1940 homes than Hillsborough County as a whole (18%) (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US33011, checked 2026-10-19).
67% of Merrimack homes are single-family detached, 2% are in two- to four-unit buildings and 13% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US3301147540, checked 2026-10-19).
11% of Merrimack homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US3301147540, checked 2026-10-19), so beside the 67% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Merrimack has 10 points more detached houses than Hillsborough County overall (57%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US33011, checked 2026-10-19).
Only 11% of Merrimack homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US3301147540, 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.
Eversource lists Merrimack among the New Hampshire communities it serves for electricity (New Hampshire Department of Energy, utilities by city and town, https://www.energy.nh.gov/utilities-providers/utilities-city-town, checked 2026-10-19).
NHSaves air source heat pump rebate, run by NHSaves (Eversource, Liberty, Unitil), is a live program for New Hampshire addresses and lists a standard figure of $250 (registry row 6 verified 2026-10-14, https://nhsaves.com/residential/electric-heating-cooling-equipment/, checked 2026-10-16); confirm eligibility for the Merrimack address before counting it. With 11% of Merrimack homes already on electric heat and 85% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Median household income in Merrimack is $127,219 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US3301147540, checked 2026-10-19); many state and utility heat pump rebate programs set higher incentive tiers for income-qualifying households, so the household income on the application, not the town median, decides which level applies.
Heating design temperature: 0F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Hillsborough County row, 99% heating, PDF page 81 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 0F figure is the Hillsborough County cold-day number a Merrimack heat pump is sized against, so ask the installer to show the system's heating output at 0F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 36% of Merrimack on gas and 11% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Merrimack home has 6.4 rooms and was built around 1985, 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 Merrimack. The public number is the number the contractor quotes from.
No local contractor is named on this door for Merrimack yet. A request from this page goes to the first licensed shop that takes the door.