Hempstead / Setauket
Setauket has 4,069 residents (give or take 875) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US3666465, checked 2026-10-19), about 1,616 people per square mile.
Setauket is about 31 miles from the Census center point for Hempstead in a straight line and covers 2.518 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 Setauket that is 11733 (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 1,436 occupied homes in Setauket, 20% heat with natural gas, 70% with heating oil, 6% with electricity and 3% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US3666465, checked 2026-10-19).
Heating oil is the largest single fuel in Setauket at 70%, ahead of gas 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.
Setauket has 26 points more oil heat than Suffolk County as a whole, where 44% of homes burn oil, and 3 points less electric heat than the county's 9% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US36103, checked 2026-10-19).
Setauket has 1,554 housing units, 10% built before 1940 and 81% before 1980, with 7% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3666465, checked 2026-10-19).
Setauket has 6 points fewer homes built after 2000 than the county's 13% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US36103, checked 2026-10-19).
The median Setauket home was built in 1965 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US3666465, checked 2026-10-19) and the median home has 7.8 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US3666465, checked 2026-10-19).
97% of Setauket homes are single-family detached, 0% are in two- to four-unit buildings and 1% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US3666465, checked 2026-10-19).
With 97% detached houses and 0% in small multi-family buildings, a Setauket quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 20% of Setauket homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3666465, checked 2026-10-19), the landlord signs the quote in many of them.
Setauket has 17 points more detached houses than Suffolk County overall (80%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US36103, checked 2026-10-19).
81% of Setauket homes were built before 1980 and only 7% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3666465, 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.
No electric utility is on file for Setauket 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 Setauket address before counting it. With 6% of Setauket homes already on electric heat and 93% 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 Setauket is $221,771 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US3666465, 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), Suffolk 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 7F figure is the Suffolk County cold-day number a Setauket 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 70% of the 1,436 occupied Setauket homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; the median Setauket home has 7.8 rooms and was built around 1965, 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 Setauket. The public number is the number the contractor quotes from.
No local contractor is named on this door for Setauket yet. A request from this page goes to the first licensed shop that takes the door.