Baltimore / Lutherville
Lutherville has 6,574 residents (give or take 929) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2448875, checked 2026-10-19), about 3,110 people per square mile.
Lutherville is about 9 miles from the Census center point for Baltimore in a straight line and covers 2.114 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).
3,110 people per square mile puts Lutherville in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 2,565 occupied homes in Lutherville, 78% heat with natural gas, 2% with heating oil, 17% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2448875, checked 2026-10-19).
Gas heats 78% of Lutherville against electricity at 17%, 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.
Lutherville has 5 points less oil heat than Baltimore County as a whole, where 7% of homes burn oil, and 21 points less electric heat than the county's 38% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US24005, checked 2026-10-19).
Lutherville has 2,697 housing units, 7% built before 1940 and 86% before 1980, with 3% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2448875, checked 2026-10-19).
Lutherville has 12 points fewer homes built after 2000 than the county's 15% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US24005, checked 2026-10-19).
The median Lutherville home was built in 1958 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2448875, checked 2026-10-19) and the median home has 7.3 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US2448875, checked 2026-10-19).
84% of Lutherville homes are single-family detached, 1% are in two- to four-unit buildings and 12% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2448875, checked 2026-10-19).
With 84% detached houses and 1% in small multi-family buildings, a Lutherville quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 15% of Lutherville homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2448875, checked 2026-10-19), the landlord signs the quote in many of them.
Lutherville has 37 points more detached houses than Baltimore County overall (47%) and 13 points fewer five-plus-unit buildings than the county's 25% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US24005, checked 2026-10-19).
Only 15% of Lutherville homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2448875, 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.
86% of Lutherville homes were built before 1980 and only 3% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2448875, checked 2026-10-19), so most of the stock predates modern insulation codes; the installer's heat-loss calculation, not a square-footage rule, decides the tonnage.
No electric utility is on file for Lutherville 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 Lutherville is $113,563 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2448875, 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), Baltimore 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 Baltimore County cold-day number a Lutherville 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 whether the quote is whole-home or partial-home, because with 78% of Lutherville on gas and 17% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Lutherville home has 7.3 rooms and was built around 1958, 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 Lutherville. The public number is the number the contractor quotes from.
No local contractor is named on this door for Lutherville yet. A request from this page goes to the first licensed shop that takes the door.