Hempstead / Locust Valley
Locust Valley is about 12 miles from the Census center point for Hempstead in a straight line and covers 0.906 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).
Locust Valley has 4,153 residents (give or take 843) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US3643192, checked 2026-10-19), about 4,584 people per square mile.
4,584 people per square mile puts Locust Valley in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 1,241 occupied homes in Locust Valley, 71% heat with natural gas, 23% with heating oil, 5% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US3643192, checked 2026-10-19).
Locust Valley has 3 points less oil heat than Nassau County as a whole, where 26% of homes burn oil, and 2 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 Locust Valley at 71%, but 24% of homes still burn delivered oil or propane, and those 298 or so homes are where a heat pump pays back fastest.
The median Locust Valley home was built in 1945 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US3643192, checked 2026-10-19) and the median home has 6.5 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US3643192, checked 2026-10-19).
Locust Valley has 1,254 housing units, 43% built before 1940 and 83% before 1980, with 12% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3643192, checked 2026-10-19).
Locust Valley has 24 points more pre-1940 homes than Nassau County as a whole (19%) and 5 points more homes built after 2000 than the county's 7% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US36059, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
43% of Locust Valley homes were built before 1940 and 83% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3643192, checked 2026-10-19), so insulation is the first sizing question: an older home leaks more heat per square foot, and the installer runs a room-by-room heat-loss calculation to size the system for what the walls and windows actually hold in, not just the floor plan.
93% of Locust Valley homes are single-family detached, 5% 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=160XX00US3643192, checked 2026-10-19).
With 93% detached houses and 5% in small multi-family buildings, a Locust Valley quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 14% of Locust Valley homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3643192, checked 2026-10-19), the landlord signs the quote in many of them.
Locust Valley has 17 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 14% of Locust Valley homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3643192, 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 Locust Valley 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 Locust Valley address before counting it. With 5% of Locust Valley homes already on electric heat and 95% 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 Locust Valley is $152,472 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US3643192, 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 Locust Valley 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 71% of Locust Valley on gas and 5% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; a Locust Valley house from before 1940 (43% of the 1,254 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Locust Valley. The public number is the number the contractor quotes from.
No local contractor is named on this door for Locust Valley yet. A request from this page goes to the first licensed shop that takes the door.