Stamford / Fairfield
Fairfield has 63,416 residents (give or take 52) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US0912026620, checked 2026-10-19), about 2,121 people per square mile.
Fairfield is about 16 miles from the Census center point for Stamford in a straight line and covers 29.903 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 Fairfield that is 06824, 06825, 06890 (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 21,561 occupied homes in Fairfield, 61% heat with natural gas, 27% with heating oil, 8% with electricity and 3% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US0912026620, checked 2026-10-19).
Gas leads in Fairfield at 61%, but 30% of homes still burn delivered oil or propane, and those 6,468 or so homes are where a heat pump pays back fastest.
Fairfield has 4 points more oil heat than Greater Bridgeport Planning Region as a whole, where 23% of homes burn oil, and 6 points less electric heat than the county's 14% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US09120, checked 2026-10-19).
Fairfield has 22,537 housing units, 19% built before 1940 and 74% before 1980, with 13% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US0912026620, checked 2026-10-19).
Fairfield has 5 points fewer pre-1940 homes than Greater Bridgeport Planning Region as a whole (24%) and 5 points more homes built after 2000 than the county's 8% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US09120, checked 2026-10-19).
The median Fairfield home was built in 1960 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US0912026620, checked 2026-10-19) and the median home has 7 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US0912026620, checked 2026-10-19).
77% of Fairfield homes are single-family detached, 9% 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=060XX00US0912026620, checked 2026-10-19).
With 77% detached houses and 9% in small multi-family buildings, a Fairfield quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 17% of Fairfield homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US0912026620, checked 2026-10-19), the landlord signs the quote in many of them.
Fairfield has 24 points more detached houses than Greater Bridgeport Planning Region overall (53%) and 11 points fewer five-plus-unit buildings than the county's 17% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US09120, checked 2026-10-19).
74% of Fairfield homes were built before 1980 and only 13% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US0912026620, checked 2026-10-19), so most of the stock predates modern insulation codes; the installer's heat-loss calculation, not a square-footage rule, decides the tonnage.
United Illuminating lists Fairfield among the Connecticut communities it serves for electricity (United Illuminating service area, https://www.uinet.com, checked 2026-10-19).
Energize CT residential heat pump rebate, run by Energize CT, is a live program for Connecticut addresses and publishes its terms without one headline figure (registry row 3 verified 2026-10-15, https://www.energizect.com/node/68091, checked 2026-10-16); confirm eligibility for the Fairfield address before counting it. With 8% of Fairfield homes already on electric heat and 91% 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 Fairfield is $172,432 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US0912026620, 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: 2F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Fairfield County row, 99% heating, PDF page 17 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; town filed under Fairfield County by Census Bureau, Connecticut county to county subdivision crosswalk (legacy county for each 2022 planning region town), https://www2.census.gov/geo/docs/reference/ct_change/ct_cou_to_cousub_crosswalk.txt, fetched 2026-10-19, 99%.
That 2F figure is the Fairfield County cold-day number a Fairfield heat pump is sized against, so ask the installer to show the system's heating output at 2F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 61% of Fairfield on gas and 8% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Fairfield home has 7 rooms and was built around 1960, 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 Fairfield. The public number is the number the contractor quotes from.
No local contractor is named on this door for Fairfield yet. A request from this page goes to the first licensed shop that takes the door.