Portland / Cumberland
Cumberland is about 11 miles from the Census center point for Portland in a straight line and covers 22.856 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).
Cumberland has 8,647 residents (give or take 22) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US2300515430, checked 2026-10-19), about 378 people per square mile.
The quote form takes a ZIP code; for Cumberland that is 04021, 04110 (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).
Cumberland is spread out at 378 people per square mile across 22.856 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 3,109 occupied homes in Cumberland, 23% heat with natural gas, 50% with heating oil, 8% with electricity and 12% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US2300515430, checked 2026-10-19).
Cumberland has 4 points more oil heat than Cumberland County as a whole, where 46% of homes burn oil, and 7 points less electric heat than the county's 15% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US23005, checked 2026-10-19).
Heating oil is the largest single fuel in Cumberland at 50%, ahead of gas at 23%, 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.
The median Cumberland home was built in 1984 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US2300515430, checked 2026-10-19) and the median home has 7.4 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US2300515430, checked 2026-10-19).
Cumberland has 3,282 housing units, 15% built before 1940 and 46% before 1980, with 29% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2300515430, checked 2026-10-19).
Cumberland has 8 points fewer pre-1940 homes than Cumberland County as a whole (23%) and 7 points more homes built after 2000 than the county's 22% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US23005, checked 2026-10-19).
82% of Cumberland homes are single-family detached, 4% 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=060XX00US2300515430, checked 2026-10-19).
With 82% detached houses and 4% in small multi-family buildings, a Cumberland quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 9% of Cumberland homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2300515430, checked 2026-10-19), the landlord signs the quote in many of them.
Cumberland has 19 points more detached houses than Cumberland County overall (63%) and 11 points fewer five-plus-unit buildings than the county's 15% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US23005, checked 2026-10-19).
Only 9% of Cumberland homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2300515430, 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.
No electric utility is on file for Cumberland on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Efficiency Maine whole-home heat pump rebate, run by Efficiency Maine, is a live program for Maine addresses and lists a standard figure of $3,000 (registry row 7 verified 2026-10-15, https://www.efficiencymaine.com/whole-home-heat-pump-rebates/, checked 2026-10-16); confirm eligibility for the Cumberland address before counting it. With 8% of Cumberland 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 Cumberland is $173,894 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US2300515430, 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: -4F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Cumberland County row, 99% heating, PDF pages 54 to 55 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 -4F figure is the Cumberland County cold-day number a Cumberland heat pump is sized against, so ask the installer to show the system's heating output at -4F, not at the milder rating-label temperature.
Ask what happens to the oil tank, since 50% of the 3,109 occupied Cumberland homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; the median Cumberland home has 7.4 rooms and was built around 1984, 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 Cumberland. The public number is the number the contractor quotes from.
No local contractor is named on this door for Cumberland yet. A request from this page goes to the first licensed shop that takes the door.