Hartford / East Lyme
East Lyme has 18,721 residents (give or take 47) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=060XX00US0918023400, checked 2026-10-19), about 550 people per square mile.
East Lyme is about 37 miles from the Census center point for Hartford in a straight line and covers 34.017 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 East Lyme that is 06333, 06357 (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 8,004 occupied homes in East Lyme, 8% heat with natural gas, 53% with heating oil, 25% with electricity and 12% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=060XX00US0918023400, checked 2026-10-19).
Heating oil is the largest single fuel in East Lyme at 53%, ahead of electricity at 25%, 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.
East Lyme has 4 points more oil heat than Southeastern Connecticut Planning Region as a whole, where 49% of homes burn oil, and 3 points more electric heat than the county's 22% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US09180, checked 2026-10-19).
East Lyme has 9,283 housing units, 12% built before 1940 and 57% before 1980, with 23% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=060XX00US0918023400, checked 2026-10-19).
East Lyme has 12 points fewer pre-1940 homes than Southeastern Connecticut Planning Region as a whole (24%) and 8 points more homes built after 2000 than the county's 15% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US09180, checked 2026-10-19).
The median East Lyme home was built in 1975 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=060XX00US0918023400, checked 2026-10-19) and the median home has 6 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=060XX00US0918023400, checked 2026-10-19).
76% of East Lyme homes are single-family detached, 7% are in two- to four-unit buildings and 12% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=060XX00US0918023400, checked 2026-10-19).
With 76% detached houses and 7% in small multi-family buildings, a East Lyme quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 24% of East Lyme homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=060XX00US0918023400, checked 2026-10-19), the landlord signs the quote in many of them.
East Lyme has 15 points more detached houses than Southeastern Connecticut Planning Region overall (61%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US09180, checked 2026-10-19).
No electric utility is on file for East Lyme on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
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 East Lyme address before counting it. With 25% of East Lyme homes already on electric heat and 73% 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 East Lyme is $105,044 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=060XX00US0918023400, 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: 7F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), New London 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 New London 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 7F figure is the New London County cold-day number a East Lyme heat pump is sized against, so ask the installer to show the system's heating output at 7F, not at the milder rating-label temperature.
Ask what happens to the oil tank, since 53% of the 8,004 occupied East Lyme homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; the median East Lyme home has 6 rooms and was built around 1975, 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 East Lyme. The public number is the number the contractor quotes from.
No local contractor is named on this door for East Lyme yet. A request from this page goes to the first licensed shop that takes the door.