Louisville / Harrodsburg
Harrodsburg has 9,313 residents (give or take 25) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2134966, checked 2026-10-19), about 1,346 people per square mile.
Harrodsburg is about 51 miles from the Census center point for Louisville in a straight line and covers 6.921 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).
Of the 4,150 occupied homes in Harrodsburg, 37% heat with natural gas, 0% with heating oil, 62% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2134966, checked 2026-10-19).
Electricity already heats 62% of Harrodsburg homes, ahead of gas at 37%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Harrodsburg has about the Mercer County oil share of 0% and 5 points less electric heat than the county's 67% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US21167, checked 2026-10-19).
Harrodsburg has 4,469 housing units, 14% built before 1940 and 64% before 1980, with 22% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2134966, checked 2026-10-19).
Harrodsburg has 3 points more pre-1940 homes than Mercer County as a whole (11%) and 4 points fewer homes built after 2000 than the county's 26% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US21167, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Harrodsburg home was built in 1974 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2134966, checked 2026-10-19) and the median home has 5.1 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US2134966, checked 2026-10-19).
73% of Harrodsburg homes are single-family detached, 10% are in two- to four-unit buildings and 13% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2134966, checked 2026-10-19).
With 73% detached houses and 10% in small multi-family buildings, a Harrodsburg quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 40% of Harrodsburg homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2134966, checked 2026-10-19), the landlord signs the quote in many of them.
Harrodsburg has 7 points fewer detached houses than Mercer County overall (80%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US21167, checked 2026-10-19).
40% of Harrodsburg homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2134966, 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.
64% of Harrodsburg homes were built before 1980 and only 22% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2134966, 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 Harrodsburg 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 Harrodsburg is $48,381 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2134966, 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: 13F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Mercer County row, 99% heating, PDF pages 46 to 51 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 13F figure is the Mercer County cold-day number a Harrodsburg heat pump is sized against, so ask the installer to show the system's heating output at 13F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Harrodsburg home has 5.1 rooms and was built around 1974, 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 Harrodsburg. The public number is the number the contractor quotes from.
No local contractor is named on this door for Harrodsburg yet. A request from this page goes to the first licensed shop that takes the door.