Louisville / Union
Union has 7,642 residents (give or take 21) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2178384, checked 2026-10-19), about 1,987 people per square mile.
Union is about 75 miles from the Census center point for Louisville in a straight line and covers 3.846 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 2,626 occupied homes in Union, 57% heat with natural gas, 0% with heating oil, 42% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2178384, checked 2026-10-19).
Gas heats 57% of Union against electricity at 42%, 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.
Union has about the Boone County oil share of 1% and 6 points less electric heat than the county's 48% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US21015, checked 2026-10-19).
Union has 2,778 housing units, 0% built before 1940 and 4% before 1980, with 80% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2178384, checked 2026-10-19).
Union has 38 points more homes built after 2000 than the county's 42% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US21015, checked 2026-10-19).
The median Union home was built in 2007 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2178384, checked 2026-10-19) and the median home has 8.4 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US2178384, checked 2026-10-19).
79% of Union homes are single-family detached, 1% are in two- to four-unit buildings and 17% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2178384, checked 2026-10-19).
With 79% detached houses and 1% in small multi-family buildings, a Union quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 18% of Union homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2178384, checked 2026-10-19), the landlord signs the quote in many of them.
Union has 11 points more detached houses than Boone County overall (68%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US21015, checked 2026-10-19).
80% of Union housing was built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2178384, checked 2026-10-19), and homes that recent usually meet the insulation codes in place at the time, so a heat pump sized to the floor plan lands closer to the real load than it would in an older neighborhood.
Duke Energy Kentucky lists Union among the Kentucky communities it serves for electricity (Duke Energy Kentucky electric tariff Sheet No. 10, communities served, https://www.duke-energy.com/-/media/pdfs/for-your-home/rates/electric-ky/sheet-no10-index-ky-elec.pdf, checked 2026-10-19).
Smart $aver Home Improvement Rebates: $500 usd_max (https://www.duke-energy.com/home/products/smart-saver/hvac-install?jur=KY01, checked 2026-10-25); confirm eligibility for the address.
Median household income in Union is $136,712 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2178384, 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: 5F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Boone 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 5F figure is the Boone County cold-day number a Union heat pump is sized against, so ask the installer to show the system's heating output at 5F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 57% of Union on gas and 42% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Union home has 8.4 rooms and was built around 2007, 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 Union. The public number is the number the contractor quotes from.
No local contractor is named on this door for Union yet. A request from this page goes to the first licensed shop that takes the door.