Baltimore / Westminster
Westminster has 20,445 residents (give or take 33) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2483100, checked 2026-10-19), about 3,023 people per square mile.
Westminster is about 29 miles from the Census center point for Baltimore in a straight line and covers 6.764 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 Westminster is $86,219 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2483100, 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.
3,023 people per square mile puts Westminster in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
34% of Westminster homes are single-family detached, 8% are in two- to four-unit buildings and 30% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2483100, checked 2026-10-19).
44% of Westminster homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2483100, checked 2026-10-19), so beside the 34% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Westminster has 44 points fewer detached houses than Carroll County overall (78%) and 23 points more five-plus-unit buildings than the county's 7% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US24013, checked 2026-10-19).
44% of Westminster homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2483100, 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 7,949 occupied homes in Westminster, 36% heat with natural gas, 4% with heating oil, 58% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2483100, checked 2026-10-19).
Electricity already heats 58% of Westminster homes, ahead of gas at 36%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Westminster has 14 points less oil heat than Carroll County as a whole, where 18% of homes burn oil, and 8 points more electric heat than the county's 50% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US24013, checked 2026-10-19).
No electric utility is on file for Westminster on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Westminster has 8,263 housing units, 18% built before 1940 and 46% before 1980, with 17% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2483100, checked 2026-10-19).
Westminster has 7 points more pre-1940 homes than Carroll County as a whole (11%) and 4 points fewer homes built after 2000 than the county's 21% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US24013, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Westminster home was built in 1982 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2483100, 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=160XX00US2483100, checked 2026-10-19).
Heating design temperature: 12F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Carroll 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 12F figure is the Carroll County cold-day number a Westminster heat pump is sized against, so ask the installer to show the system's heating output at 12F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Westminster home has 5.5 rooms and was built around 1982, 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 Westminster. The public number is the number the contractor quotes from.
No local contractor is named on this door for Westminster yet. A request from this page goes to the first licensed shop that takes the door.