Harrisburg / Williamsport
Williamsport has 27,612 residents (give or take 53) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4285312, checked 2026-10-19), about 3,146 people per square mile.
Williamsport is about 67 miles from the Census center point for Harrisburg in a straight line and covers 8.777 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).
Median household income in Williamsport is $48,851 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US4285312, 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.
3,146 people per square mile puts Williamsport in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
44% of Williamsport homes are single-family detached, 18% are in two- to four-unit buildings and 23% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4285312, checked 2026-10-19).
57% of Williamsport homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4285312, checked 2026-10-19), so beside the 44% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Williamsport has 25 points fewer detached houses than Lycoming County overall (69%) and 13 points more five-plus-unit buildings than the county's 10% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US42081, checked 2026-10-19).
57% of Williamsport homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4285312, 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 11,320 occupied homes in Williamsport, 63% heat with natural gas, 7% with heating oil, 27% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4285312, checked 2026-10-19).
Gas heats 63% of Williamsport against electricity at 27%, so most quotes here are a partial-home system that carries the shoulder seasons and the summer while the gas furnace handles the coldest nights, or a whole-home system when the house is ready for it.
Williamsport has 15 points less oil heat than Lycoming County as a whole, where 22% of homes burn oil, and the same 27% electric share (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US42081, checked 2026-10-19).
No electric utility is on file for Williamsport on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Williamsport has 13,107 housing units, 52% built before 1940 and 84% before 1980, with 9% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4285312, checked 2026-10-19).
Williamsport has 21 points more pre-1940 homes than Lycoming County as a whole (31%) and 3 points fewer homes built after 2000 than the county's 12% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US42081, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Williamsport home was built in 1938 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4285312, checked 2026-10-19) and the median home has 5.6 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4285312, checked 2026-10-19).
52% of Williamsport homes were built before 1940 and 84% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4285312, checked 2026-10-19), so insulation is the first sizing question: an older home leaks more heat per square foot, and the installer runs a room-by-room heat-loss calculation to size the system for what the walls and windows actually hold in, not just the floor plan.
Heating design temperature: 7F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Lycoming 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 7F figure is the Lycoming County cold-day number a Williamsport heat pump is sized against, so ask the installer to show the system's heating output at 7F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 63% of Williamsport on gas and 27% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; a Williamsport house from before 1940 (52% of the 13,107 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Williamsport. The public number is the number the contractor quotes from.
No local contractor is named on this door for Williamsport yet. A request from this page goes to the first licensed shop that takes the door.