Raleigh / Durham
Durham has 291,467 residents (give or take 190) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US3719000, checked 2026-10-19), about 2,453 people per square mile.
Durham is about 18 miles from the Census center point for Raleigh in a straight line and covers 118.835 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 Durham that is 27701, 27703, 27704, 27705, 27707, 27708, 27712, 27713 (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 126,550 occupied homes in Durham, 39% heat with natural gas, 0% with heating oil, 59% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US3719000, checked 2026-10-19).
Electricity already heats 59% of Durham homes, ahead of gas at 39%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Durham has about the Durham County oil share of 0% and the same 59% electric share (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US37063, checked 2026-10-19).
Durham has 136,837 housing units, 5% built before 1940 and 30% before 1980, with 43% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3719000, checked 2026-10-19).
Durham tracks Durham County on housing age, with the county at 5% pre-1940 and 41% post-2000 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US37063, checked 2026-10-19).
The median Durham home was built in 1995 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US3719000, checked 2026-10-19) and the median home has 5.2 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US3719000, checked 2026-10-19).
51% of Durham homes are single-family detached, 7% are in two- to four-unit buildings and 31% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US3719000, checked 2026-10-19).
48% of Durham homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3719000, checked 2026-10-19), so beside the 51% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
48% of Durham homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US3719000, 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.
43% of Durham housing was built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US3719000, 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 Durham on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Median household income in Durham is $81,619 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US3719000, 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: 15F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Durham County row, 99% heating, PDF pages 86 to 90 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 15F figure is the Durham County cold-day number a Durham heat pump is sized against, so ask the installer to show the system's heating output at 15F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Durham home has 5.2 rooms and was built around 1995, 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 Durham. The public number is the number the contractor quotes from.
No local contractor is named on this door for Durham yet. A request from this page goes to the first licensed shop that takes the door.