Harrisburg / Chambersburg
Chambersburg has 22,319 residents (give or take 22) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4212536, checked 2026-10-19), about 3,223 people per square mile.
Chambersburg is about 47 miles from the Census center point for Harrisburg in a straight line and covers 6.925 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 Chambersburg that is 17201 (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 Chambersburg is $56,576 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US4212536, 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.
3,223 people per square mile puts Chambersburg in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
39% of Chambersburg homes are single-family detached, 16% 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=160XX00US4212536, checked 2026-10-19).
57% of Chambersburg homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4212536, checked 2026-10-19), so beside the 39% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Chambersburg has 30 points fewer detached houses than Franklin County overall (69%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US42055, checked 2026-10-19).
57% of Chambersburg homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4212536, 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 9,839 occupied homes in Chambersburg, 42% heat with natural gas, 6% with heating oil, 50% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4212536, checked 2026-10-19).
Electricity already heats 50% of Chambersburg homes, ahead of gas at 42%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Chambersburg has 11 points less oil heat than Franklin County as a whole, where 17% of homes burn oil, and 2 points less electric heat than the county's 52% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US42055, checked 2026-10-19).
No electric utility is on file for Chambersburg on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Chambersburg has 10,329 housing units, 24% built before 1940 and 64% before 1980, with 19% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4212536, checked 2026-10-19).
Chambersburg has 8 points more pre-1940 homes than Franklin County as a whole (16%) and 3 points fewer homes built after 2000 than the county's 22% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US42055, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Chambersburg home was built in 1963 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4212536, checked 2026-10-19) and the median home has 5.5 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4212536, checked 2026-10-19).
64% of Chambersburg homes were built before 1980 and only 19% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4212536, checked 2026-10-19), so most of the stock predates modern insulation codes; the installer's heat-loss calculation, not a square-footage rule, decides the tonnage.
Heating design temperature: 8F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Franklin County row, 99% heating, PDF pages 102 to 105 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 8F figure is the Franklin County cold-day number a Chambersburg heat pump is sized against, so ask the installer to show the system's heating output at 8F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Chambersburg home has 5.5 rooms and was built around 1963, 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 Chambersburg. The public number is the number the contractor quotes from.
No local contractor is named on this door for Chambersburg yet. A request from this page goes to the first licensed shop that takes the door.