Seattle / Bellingham
Bellingham has 93,438 residents (give or take 64) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US5305280, checked 2026-10-19), about 3,314 people per square mile.
Bellingham is about 79 miles from the Census center point for Seattle in a straight line and covers 28.198 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 Bellingham that is 98225 (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).
Median household income in Bellingham is $66,755 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US5305280, 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.
3,314 people per square mile puts Bellingham in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
43% of Bellingham homes are single-family detached, 11% are in two- to four-unit buildings and 39% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US5305280, checked 2026-10-19).
55% of Bellingham homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US5305280, checked 2026-10-19), so beside the 43% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Bellingham has 20 points fewer detached houses than Whatcom County overall (63%) and 19 points more five-plus-unit buildings than the county's 20% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US53073, checked 2026-10-19).
55% of Bellingham homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US5305280, checked 2026-10-19), so the market splits between resident-led jobs where the occupant picks the system and landlord-led jobs where they do not, and the rebate paperwork differs.
Of the 41,500 occupied homes in Bellingham, 40% heat with natural gas, 0% with heating oil, 57% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US5305280, checked 2026-10-19).
Electricity already heats 57% of Bellingham homes, ahead of gas at 40%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Bellingham has about the Whatcom County oil share of 1% and 11 points more electric heat than the county's 46% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US53073, checked 2026-10-19).
No electric utility is on file for Bellingham 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 Bellingham address before counting it. With 57% of Bellingham homes already on electric heat and 41% 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 Bellingham 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 Bellingham address before counting it.
Bellingham has 43,792 housing units, 17% built before 1940 and 43% before 1980, with 31% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US5305280, checked 2026-10-19).
Bellingham has 6 points more pre-1940 homes than Whatcom County as a whole (11%) (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US53073, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Bellingham home was built in 1986 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US5305280, checked 2026-10-19) and the median home has 4.6 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US5305280, checked 2026-10-19).
Heating design temperature: 23F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Whatcom 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 23F figure is the Whatcom County cold-day number a Bellingham heat pump is sized against, so ask the installer to show the system's heating output at 23F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Bellingham home has 4.6 rooms and was built around 1986, 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 Bellingham. The public number is the number the contractor quotes from.
No local contractor is named on this door for Bellingham yet. A request from this page goes to the first licensed shop that takes the door.