Seattle / DuPont
DuPont has 9,931 residents (give or take 52) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US5318965, checked 2026-10-19), about 1,706 people per square mile.
DuPont is about 38 miles from the Census center point for Seattle in a straight line and covers 5.821 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 DuPont that is 98327 (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 3,833 occupied homes in DuPont, 54% heat with natural gas, 0% with heating oil, 43% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US5318965, checked 2026-10-19).
Gas heats 54% of DuPont against electricity at 43%, and a cold-climate heat pump sized for this market replaces the gas system outright, so the usual quote is a whole-home install.
DuPont has about the Pierce County oil share of 1% and 17 points less electric heat than the county's 60% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US53053, checked 2026-10-19).
DuPont has 3,948 housing units, 6% built before 1940 and 14% before 1980, with 62% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US5318965, checked 2026-10-19).
DuPont has 4 points fewer pre-1940 homes than Pierce County as a whole (10%) and 33 points more homes built after 2000 than the county's 29% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US53053, checked 2026-10-19).
The median DuPont home was built in 2002 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US5318965, checked 2026-10-19) and the median home has 5.9 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US5318965, checked 2026-10-19).
70% of DuPont homes are single-family detached, 6% are in two- to four-unit buildings and 16% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US5318965, checked 2026-10-19).
With 70% detached houses and 6% in small multi-family buildings, a DuPont quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 38% of DuPont homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US5318965, checked 2026-10-19), the landlord signs the quote in many of them.
DuPont has 5 points more detached houses than Pierce County overall (65%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US53053, checked 2026-10-19).
62% of DuPont housing was built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US5318965, 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 DuPont on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
PSE heat pump rebates (electric resistance to ASHP conversion), run by Puget Sound Energy, is a live program for Washington addresses and covers qualifying equipment at $2,400 per system (registry row 14 verified 2026-10-14, https://www.pse.com/en/rebates/heating/electric-resistance-to-air-source-heat-pump-conversion-rebate, checked 2026-10-16); confirm eligibility for the DuPont address before counting it. With 43% of DuPont homes already on electric heat and 55% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Seattle City Light heat pump instant discounts, run by Seattle City Light, is a live program for Washington addresses and lists a standard figure of $300 (registry row 47 verified 2026-10-16, https://seattle.gov/city-light/residential-services/home-energy-solutions/heating-and-cooling-your-home, checked 2026-10-16); confirm eligibility for the DuPont address before counting it.
Seattle Clean Heat Program (oil to heat pump), run by City of Seattle Office of Sustainability and Environment, is a live program for Washington addresses and lists a standard figure of $2,000 (registry row 48 verified 2026-10-14, https://seattle.gov/environment/climate-change/buildings-and-energy/seattles-clean-heat-program, checked 2026-10-16); confirm eligibility for the DuPont address before counting it.
Median household income in DuPont is $120,781 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US5318965, 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: 24F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Pierce County row, 99% heating, PDF pages 133 to 135 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 24F figure is the Pierce County cold-day number a DuPont heat pump is sized against, so ask the installer to show the system's heating output at 24F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 54% of DuPont on gas and 43% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median DuPont home has 5.9 rooms and was built around 2002, 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 DuPont. The public number is the number the contractor quotes from.
No local contractor is named on this door for DuPont yet. A request from this page goes to the first licensed shop that takes the door.