Hempstead / Seaford
Seaford is about 7 miles from the Census center point for Hempstead in a straight line and covers 2.61 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).
Seaford has 15,549 residents (give or take 1,330) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US3666058, checked 2026-10-19), about 5,957 people per square mile.
The quote form takes a ZIP code; for Seaford that is 11783 (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).
5,957 people per square mile puts Seaford in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 5,227 occupied homes in Seaford, 63% heat with natural gas, 34% with heating oil, 2% with electricity and 0% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US3666058, checked 2026-10-19).
Seaford has 8 points more oil heat than Nassau County as a whole, where 26% of homes burn oil, and 5 points less electric heat than the county's 7% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US36059, checked 2026-10-19).
Gas leads in Seaford at 63%, but 34% of homes still burn delivered oil or propane, and those 1,777 or so homes are where a heat pump pays back fastest.
The median Seaford home was built in 1958 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US3666058, 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=160XX00US3666058, checked 2026-10-19).
Seaford has 5,389 housing units, 11% built before 1940 and 88% before 1980, with 8% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3666058, checked 2026-10-19).
Seaford has 8 points fewer pre-1940 homes than Nassau County as a whole (19%) (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US36059, checked 2026-10-19).
88% of Seaford homes were built before 1980 and only 8% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3666058, 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.
94% of Seaford homes are single-family detached, 3% are in two- to four-unit buildings and 2% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US3666058, checked 2026-10-19).
With 94% detached houses and 3% in small multi-family buildings, a Seaford quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 7% of Seaford homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3666058, checked 2026-10-19), the landlord signs the quote in many of them.
Seaford has 18 points more detached houses than Nassau County overall (76%) and 11 points fewer five-plus-unit buildings than the county's 13% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US36059, checked 2026-10-19).
Only 7% of Seaford homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3666058, checked 2026-10-19), so nearly every quote here is the resident talking to the installer directly, and the rebate goes to the person living in the house.
No electric utility is on file for Seaford on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
NYS Clean Heat (Con Edison), run by Con Edison, is a live program for New York addresses and lists a standard figure of $7,000 (registry row 5 verified 2026-10-16, https://www.coned.com/en/save-money/rebates-incentives-tax-credits/rebates-incentives-tax-credits-for-residential-customers/electric-heating-and-cooling-technology-for-renters-homeowners/save-on-a-central-air-source-heat-pump, checked 2026-10-16); confirm eligibility for the Seaford address before counting it. With 2% of Seaford homes already on electric heat and 97% 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 Seaford is $172,557 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US3666058, 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), Nassau County row, 99% heating, PDF pages 84 to 86 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 Nassau County cold-day number a Seaford 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 whether the quote is whole-home or partial-home, because with 63% of Seaford on gas and 2% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Seaford home has 7 rooms and was built around 1958, 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 Seaford. The public number is the number the contractor quotes from.
No local contractor is named on this door for Seaford yet. A request from this page goes to the first licensed shop that takes the door.