Portland / Gorham
Gorham is about 15 miles from the Census center point for Portland in a straight line and covers 50.588 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).
Gorham has 18,300 residents (give or take 20) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US2300528240, checked 2026-10-19), about 362 people per square mile.
The quote form takes a ZIP code; for Gorham that is 04038 (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).
Gorham is spread out at 362 people per square mile across 50.588 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 6,636 occupied homes in Gorham, 12% heat with natural gas, 60% with heating oil, 8% with electricity and 14% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US2300528240, checked 2026-10-19).
Gorham has 14 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 Gorham at 60%, ahead of propane at 14%, 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 Gorham home was built in 1988 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US2300528240, checked 2026-10-19) and the median home has 6.1 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US2300528240, checked 2026-10-19).
Gorham has 6,834 housing units, 14% built before 1940 and 38% before 1980, with 33% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2300528240, checked 2026-10-19).
Gorham has 9 points fewer pre-1940 homes than Cumberland County as a whole (23%) and 11 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).
80% of Gorham homes are single-family detached, 7% are in two- to four-unit buildings and 5% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US2300528240, checked 2026-10-19).
With 80% detached houses and 7% in small multi-family buildings, a Gorham quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 19% of Gorham homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2300528240, checked 2026-10-19), the landlord signs the quote in many of them.
Gorham has 17 points more detached houses than Cumberland County overall (63%) and 10 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).
No electric utility is on file for Gorham 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 Gorham address before counting it. With 8% of Gorham homes already on electric heat and 86% 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 Gorham is $112,312 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US2300528240, 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 Gorham 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 60% of the 6,636 occupied Gorham homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; the median Gorham home has 6.1 rooms and was built around 1988, 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 Gorham. The public number is the number the contractor quotes from.
No local contractor is named on this door for Gorham yet. A request from this page goes to the first licensed shop that takes the door.