Portland / Camden
Camden has 5,242 residents (give or take 15) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US2301309725, checked 2026-10-19), about 287 people per square mile.
Camden is about 69 miles from the Census center point for Portland in a straight line and covers 18.241 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 Camden that is 04843 (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).
Camden is spread out at 287 people per square mile across 18.241 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 2,474 occupied homes in Camden, 2% heat with natural gas, 49% with heating oil, 21% with electricity and 19% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US2301309725, checked 2026-10-19).
Heating oil is the largest single fuel in Camden at 49%, ahead of electricity at 21%, 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.
Camden has 7 points less oil heat than Knox County as a whole, where 56% of homes burn oil, and 10 points more electric heat than the county's 11% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US23013, checked 2026-10-19).
Camden has 3,210 housing units, 37% built before 1940 and 59% before 1980, with 16% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2301309725, checked 2026-10-19).
Camden has 4 points more pre-1940 homes than Knox County as a whole (33%) (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US23013, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Camden home was built in 1970 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US2301309725, checked 2026-10-19) and the median home has 6.2 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US2301309725, checked 2026-10-19).
74% of Camden homes are single-family detached, 10% are in two- to four-unit buildings and 8% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US2301309725, checked 2026-10-19).
With 74% detached houses and 10% in small multi-family buildings, a Camden quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 27% of Camden homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2301309725, checked 2026-10-19), the landlord signs the quote in many of them.
Camden has 5 points fewer detached houses than Knox County overall (79%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US23013, checked 2026-10-19).
37% of Camden homes were built before 1940 and 59% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2301309725, checked 2026-10-19), so insulation is the first sizing question: an older home leaks more heat per square foot, and the installer runs a room-by-room heat-loss calculation to size the system for what the walls and windows actually hold in, not just the floor plan.
No electric utility is on file for Camden 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 Camden address before counting it. With 21% of Camden homes already on electric heat and 70% 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 Camden is $82,344 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US2301309725, 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: 1F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Knox 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 1F figure is the Knox County cold-day number a Camden heat pump is sized against, so ask the installer to show the system's heating output at 1F, not at the milder rating-label temperature.
Ask what happens to the oil tank, since 49% of the 2,474 occupied Camden homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; a Camden house from before 1940 (37% of the 3,210 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Camden. The public number is the number the contractor quotes from.
No local contractor is named on this door for Camden yet. A request from this page goes to the first licensed shop that takes the door.