Harrisburg / Emmaus
Emmaus has 11,889 residents (give or take 20) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4223584, checked 2026-10-19), about 4,107 people per square mile.
Emmaus is about 75 miles from the Census center point for Harrisburg in a straight line and covers 2.895 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 Emmaus is $83,917 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US4223584, 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.
4,107 people per square mile puts Emmaus in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
45% of Emmaus homes are single-family detached, 11% are in two- to four-unit buildings and 19% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4223584, checked 2026-10-19).
36% of Emmaus homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4223584, checked 2026-10-19), so beside the 45% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Emmaus has 5 points fewer detached houses than Lehigh County overall (50%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US42077, checked 2026-10-19).
Of the 5,038 occupied homes in Emmaus, 35% heat with natural gas, 24% with heating oil, 34% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4223584, checked 2026-10-19).
Gas leads in Emmaus at 35%, but 26% of homes still burn delivered oil or propane, and those 1,310 or so homes are where a heat pump pays back fastest.
Emmaus has 6 points more oil heat than Lehigh County as a whole, where 18% of homes burn oil, and 7 points less electric heat than the county's 41% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US42077, checked 2026-10-19).
No electric utility is on file for Emmaus on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Emmaus has 5,128 housing units, 30% built before 1940 and 78% before 1980, with 4% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4223584, checked 2026-10-19).
Emmaus has 6 points more pre-1940 homes than Lehigh County as a whole (24%) and 13 points fewer homes built after 2000 than the county's 17% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US42077, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Emmaus home was built in 1955 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4223584, checked 2026-10-19) and the median home has 5.9 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4223584, checked 2026-10-19).
30% of Emmaus homes were built before 1940 and 78% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4223584, 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: 5F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Lehigh 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 5F figure is the Lehigh County cold-day number a Emmaus heat pump is sized against, so ask the installer to show the system's heating output at 5F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 35% of Emmaus on gas and 34% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; a Emmaus house from before 1940 (30% of the 5,128 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Emmaus. The public number is the number the contractor quotes from.
No local contractor is named on this door for Emmaus yet. A request from this page goes to the first licensed shop that takes the door.