Portland / Cornelius
Cornelius has 14,255 residents (give or take 39) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4115550, checked 2026-10-19), about 6,092 people per square mile.
Cornelius is about 19 miles from the Census center point for Portland in a straight line and covers 2.34 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).
6,092 people per square mile puts Cornelius in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 4,843 occupied homes in Cornelius, 48% heat with natural gas, 0% with heating oil, 45% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4115550, checked 2026-10-19).
Gas heats 48% of Cornelius against electricity at 45%, and a cold-climate heat pump sized for this market replaces the gas system outright, so the usual quote is a whole-home install.
Cornelius has about the Washington County oil share of 1% and 1 points less electric heat than the county's 46% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US41067, checked 2026-10-19).
Cornelius has 4,949 housing units, 2% built before 1940 and 32% before 1980, with 30% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4115550, checked 2026-10-19).
Cornelius tracks Washington County on housing age, with the county at 3% pre-1940 and 31% post-2000 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US41067, checked 2026-10-19).
The median Cornelius home was built in 1992 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4115550, checked 2026-10-19) and the median home has 5.3 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4115550, checked 2026-10-19).
67% of Cornelius homes are single-family detached, 9% are in two- to four-unit buildings and 6% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4115550, checked 2026-10-19).
26% of Cornelius homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4115550, checked 2026-10-19), so beside the 67% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Cornelius has 10 points more detached houses than Washington County overall (57%) and 19 points fewer five-plus-unit buildings than the county's 25% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US41067, checked 2026-10-19).
No electric utility is on file for Cornelius on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Energy Trust of Oregon heat pump incentives, run by Energy Trust of Oregon, is a live program for Oregon addresses and covers qualifying equipment at $1,000 per system (registry row 15 verified 2026-10-15, https://www.energytrust.org/incentives/residential-cooling-solutions/, checked 2026-10-16); confirm eligibility for the Cornelius address before counting it. With 45% of Cornelius homes already on electric heat and 50% 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 Cornelius is $96,273 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US4115550, 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), Washington County row, 99% heating, PDF pages 100 to 102 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 Washington County cold-day number a Cornelius 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 48% of Cornelius on gas and 45% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Cornelius home has 5.3 rooms and was built around 1992, 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 Cornelius. The public number is the number the contractor quotes from.
No local contractor is named on this door for Cornelius yet. A request from this page goes to the first licensed shop that takes the door.