Nashville / Knoxville
Knoxville has 195,185 residents (give or take 110) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4740000, checked 2026-10-19), about 1,977 people per square mile.
Knoxville is about 159 miles from the Census center point for Nashville in a straight line and covers 98.733 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).
The quote form takes a ZIP code; for Knoxville that is 37902, 37909, 37912, 37914, 37915, 37916, 37917, 37918 and 5 more (Census 2020 ZCTA to county subdivision and ZCTA to place relationship files, ZIP areas at least 20% inside the town, https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_cousub20_natl.txt and https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/tab20_zcta520_place20_natl.txt, checked 2026-10-19).
Of the 86,263 occupied homes in Knoxville, 24% heat with natural gas, 0% with heating oil, 75% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4740000, checked 2026-10-19).
Electricity already heats 75% of Knoxville homes, ahead of gas at 24%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Knoxville has about the Knox County oil share of 0% and 9 points more electric heat than the county's 66% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US47093, checked 2026-10-19).
Knoxville has 96,441 housing units, 12% built before 1940 and 59% before 1980, with 21% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4740000, checked 2026-10-19).
The median Knoxville home was built in 1974 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4740000, checked 2026-10-19) and the median home has 4.9 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4740000, checked 2026-10-19).
52% of Knoxville homes are single-family detached, 8% are in two- to four-unit buildings and 34% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4740000, checked 2026-10-19).
53% of Knoxville homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4740000, checked 2026-10-19), so beside the 52% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
No electric utility is on file for Knoxville on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Heating design temperature: 20F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Knox County row, 99% heating, PDF pages 111 to 115 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 20F figure is the Knox County cold-day number a Knoxville heat pump is sized against, so ask the installer to show the system's heating output at 20F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Knoxville home has 4.9 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 Knoxville. The public number is the number the contractor quotes from.
No local contractor is named on this door for Knoxville yet. A request from this page goes to the first licensed shop that takes the door.