Hempstead / Port Washington
Port Washington is about 9 miles from the Census center point for Hempstead in a straight line and covers 4.201 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).
Port Washington has 18,004 residents (give or take 1,383) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US3659520, checked 2026-10-19), about 4,286 people per square mile.
The quote form takes a ZIP code; for Port Washington that is 11050 (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).
4,286 people per square mile puts Port Washington in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 6,115 occupied homes in Port Washington, 64% heat with natural gas, 20% with heating oil, 12% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US3659520, checked 2026-10-19).
Port Washington has 6 points less oil heat than Nassau County as a whole, where 26% of homes burn oil, and 5 points more 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 Port Washington at 64%, but 22% of homes still burn delivered oil or propane, and those 1,345 or so homes are where a heat pump pays back fastest.
The median Port Washington home was built in 1953 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US3659520, checked 2026-10-19) and the median home has 6.7 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US3659520, checked 2026-10-19).
Port Washington has 6,486 housing units, 33% built before 1940 and 82% before 1980, with 11% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3659520, checked 2026-10-19).
Port Washington has 14 points more pre-1940 homes than Nassau County as a whole (19%) and 4 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.
33% of Port Washington homes were built before 1940 and 82% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3659520, 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.
72% of Port Washington homes are single-family detached, 8% are in two- to four-unit buildings and 17% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US3659520, checked 2026-10-19).
With 72% detached houses and 8% in small multi-family buildings, a Port Washington quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 23% of Port Washington homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3659520, checked 2026-10-19), the landlord signs the quote in many of them.
No electric utility is on file for Port Washington 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 Port Washington address before counting it. With 12% of Port Washington homes already on electric heat and 86% 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 Port Washington is $170,127 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US3659520, 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 Port Washington 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 64% of Port Washington on gas and 12% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; a Port Washington house from before 1940 (33% of the 6,486 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Port Washington. The public number is the number the contractor quotes from.
No local contractor is named on this door for Port Washington yet. A request from this page goes to the first licensed shop that takes the door.