Baltimore / Mount Airy
Mount Airy has 9,805 residents (give or take 57) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2453875, checked 2026-10-19), about 2,371 people per square mile.
Mount Airy is about 29 miles from the Census center point for Baltimore in a straight line and covers 4.136 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).
Of the 3,300 occupied homes in Mount Airy, 44% heat with natural gas, 6% with heating oil, 47% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2453875, checked 2026-10-19).
Electricity already heats 47% of Mount Airy homes, ahead of gas at 44%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Mount Airy has 12 points less oil heat than Carroll County as a whole, where 18% of homes burn oil, and 3 points less 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).
Mount Airy has 3,442 housing units, 8% built before 1940 and 18% before 1980, with 39% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2453875, checked 2026-10-19).
Mount Airy has 3 points fewer pre-1940 homes than Carroll County as a whole (11%) and 18 points more 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).
The median Mount Airy home was built in 1995 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2453875, checked 2026-10-19) and the median home has 8 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US2453875, checked 2026-10-19).
71% of Mount Airy homes are single-family detached, 2% are in two- to four-unit buildings and 0% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2453875, checked 2026-10-19).
With 71% detached houses and 2% in small multi-family buildings, a Mount Airy quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 6% of Mount Airy homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2453875, checked 2026-10-19), the landlord signs the quote in many of them.
Mount Airy has 7 points fewer detached houses than Carroll County overall (78%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US24013, checked 2026-10-19).
Only 6% of Mount Airy homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2453875, checked 2026-10-19), so nearly every quote here is the resident talking to the installer directly, and the rebate goes to the person living in the house.
No electric utility is on file for Mount Airy on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Median household income in Mount Airy is $151,324 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2453875, 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.
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 Mount Airy 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 Mount Airy home has 8 rooms and was built around 1995, 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 Mount Airy. The public number is the number the contractor quotes from.
No local contractor is named on this door for Mount Airy yet. A request from this page goes to the first licensed shop that takes the door.