Hempstead / Mount Sinai
Mount Sinai has 11,093 residents (give or take 1,142) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US3649066, checked 2026-10-19), about 1,849 people per square mile.
Mount Sinai is about 35 miles from the Census center point for Hempstead in a straight line and covers 5.999 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 Mount Sinai that is 11766 (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 3,996 occupied homes in Mount Sinai, 38% heat with natural gas, 51% with heating oil, 9% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US3649066, checked 2026-10-19).
Heating oil is the largest single fuel in Mount Sinai at 51%, ahead of gas at 38%, 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.
Mount Sinai has 7 points more oil heat than Suffolk County as a whole, where 44% of homes burn oil, and the same 9% electric share (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US36103, checked 2026-10-19).
Mount Sinai has 4,192 housing units, 3% built before 1940 and 41% before 1980, with 42% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3649066, checked 2026-10-19).
Mount Sinai has 6 points fewer pre-1940 homes than Suffolk County as a whole (9%) and 29 points more 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 Mount Sinai home was built in 1987 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US3649066, checked 2026-10-19) and the median home has 7.3 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US3649066, checked 2026-10-19).
81% of Mount Sinai homes are single-family detached, 4% are in two- to four-unit buildings and 5% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US3649066, checked 2026-10-19).
With 81% detached houses and 4% in small multi-family buildings, a Mount Sinai quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 7% of Mount Sinai homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3649066, checked 2026-10-19), the landlord signs the quote in many of them.
Only 7% of Mount Sinai homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3649066, 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.
42% of Mount Sinai housing was built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3649066, checked 2026-10-19), and homes that recent usually meet the insulation codes in place at the time, so a heat pump sized to the floor plan lands closer to the real load than it would in an older neighborhood.
No electric utility is on file for Mount Sinai 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 Mount Sinai address before counting it. With 9% of Mount Sinai 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 Mount Sinai is $162,188 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US3649066, 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 Mount Sinai 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 51% of the 3,996 occupied Mount Sinai homes have one and removal is usually a separate line on the quote.
Ask for the heat-loss calculation room by room; the median Mount Sinai home has 7.3 rooms and was built around 1987, 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 Mount Sinai. The public number is the number the contractor quotes from.
No local contractor is named on this door for Mount Sinai yet. A request from this page goes to the first licensed shop that takes the door.