Baltimore / Hagerstown
Hagerstown has 43,665 residents (give or take 34) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2436075, checked 2026-10-19), about 3,379 people per square mile.
Hagerstown is about 64 miles from the Census center point for Baltimore in a straight line and covers 12.921 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 Hagerstown is $52,221 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2436075, 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.
3,379 people per square mile puts Hagerstown in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
33% of Hagerstown homes are single-family detached, 14% are in two- to four-unit buildings and 22% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2436075, checked 2026-10-19).
57% of Hagerstown homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2436075, checked 2026-10-19), so beside the 33% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Hagerstown has 30 points fewer detached houses than Washington County overall (63%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US24043, checked 2026-10-19).
57% of Hagerstown homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2436075, 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 18,144 occupied homes in Hagerstown, 38% heat with natural gas, 9% with heating oil, 49% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2436075, checked 2026-10-19).
Electricity already heats 49% of Hagerstown homes, ahead of gas at 38%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Hagerstown has 7 points less oil heat than Washington County as a whole, where 16% of homes burn oil, and 5 points less electric heat than the county's 54% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US24043, checked 2026-10-19).
No electric utility is on file for Hagerstown on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Hagerstown has 19,679 housing units, 32% built before 1940 and 67% before 1980, with 17% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2436075, checked 2026-10-19).
Hagerstown has 13 points more pre-1940 homes than Washington County as a whole (19%) and 3 points fewer homes built after 2000 than the county's 20% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US24043, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Hagerstown home was built in 1962 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2436075, 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=160XX00US2436075, checked 2026-10-19).
32% of Hagerstown homes were built before 1940 and 67% before 1980 (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2436075, 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: 8F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Washington County row, 99% heating, PDF pages 55 to 56 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 Washington County cold-day number a Hagerstown 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; a Hagerstown house from before 1940 (32% of the 19,679 units) rarely matches a square-footage rule of thumb.
The form on this page is the follow-up for Hagerstown. The public number is the number the contractor quotes from.
No local contractor is named on this door for Hagerstown yet. A request from this page goes to the first licensed shop that takes the door.