Portland / Greenville
Greenville has 1,355 residents (give or take 240) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US2302129535, checked 2026-10-19), about 32 people per square mile.
Greenville is about 130 miles from the Census center point for Portland in a straight line and covers 42.331 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).
Greenville is spread out at 32 people per square mile across 42.331 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 706 occupied homes in Greenville, 1% heat with natural gas, 53% with heating oil, 9% with electricity and 20% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US2302129535, checked 2026-10-19).
Heating oil is the largest single fuel in Greenville at 53%, ahead of propane at 20%, 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.
Greenville has about the Piscataquis County oil share of 54% and 1 points more electric heat than the county's 8% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US23021, checked 2026-10-19).
Greenville has 1,574 housing units, 23% built before 1940 and 52% before 1980, with 27% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US2302129535, checked 2026-10-19).
Greenville has 5 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=050XX00US23021, checked 2026-10-19).
The median Greenville home was built in 1979 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US2302129535, checked 2026-10-19) and the median home has 4.9 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US2302129535, checked 2026-10-19).
87% of Greenville homes are single-family detached, 3% are in two- to four-unit buildings and 6% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US2302129535, checked 2026-10-19).
With 87% detached houses and 3% in small multi-family buildings, a Greenville quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 18% of Greenville homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US2302129535, checked 2026-10-19), the landlord signs the quote in many of them.
Greenville has 5 points more detached houses than Piscataquis County overall (82%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US23021, checked 2026-10-19).
No electric utility is on file for Greenville 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 Greenville address before counting it. With 9% of Greenville homes already on electric heat and 74% 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 Greenville is $63,486 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US2302129535, 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: -9F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Piscataquis 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 -9F figure is the Piscataquis County cold-day number a Greenville 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 53% of the 706 occupied Greenville homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; the median Greenville home has 4.9 rooms and was built around 1979, 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 Greenville. The public number is the number the contractor quotes from.
No local contractor is named on this door for Greenville yet. A request from this page goes to the first licensed shop that takes the door.