St. Louis / Des Peres
Des Peres has 9,170 residents (give or take 40) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US2919270, checked 2026-10-19), about 2,123 people per square mile.
Des Peres is about 11 miles from the Census center point for St. Louis in a straight line and covers 4.319 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 Des Peres that is 63131 (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 3,195 occupied homes in Des Peres, 84% heat with natural gas, 0% with heating oil, 15% with electricity and 0% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US2919270, checked 2026-10-19).
Gas heats 84% of Des Peres against electricity at 15%, 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.
Des Peres has about the St. Louis County oil share of 0% and 8 points less electric heat than the county's 23% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US29189, checked 2026-10-19).
Des Peres has 3,331 housing units, 0% built before 1940 and 61% before 1980, with 13% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2919270, checked 2026-10-19).
Des Peres has 10 points fewer pre-1940 homes than St. Louis County as a whole (10%) (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US29189, checked 2026-10-19).
The median Des Peres home was built in 1976 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US2919270, checked 2026-10-19) and the median home has 10 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US2919270, checked 2026-10-19).
98% of Des Peres homes are single-family detached, 0% are in two- to four-unit buildings and 2% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US2919270, checked 2026-10-19).
With 98% detached houses and 0% in small multi-family buildings, a Des Peres quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 4% of Des Peres homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2919270, checked 2026-10-19), the landlord signs the quote in many of them.
Des Peres has 26 points more detached houses than St. Louis County overall (72%) and 15 points fewer five-plus-unit buildings than the county's 17% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US29189, checked 2026-10-19).
Only 4% of Des Peres homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US2919270, 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.
61% of Des Peres homes were built before 1980 and only 13% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US2919270, 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 Des Peres 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 Des Peres is $224,327 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US2919270, 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: 2F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), St. Louis County row, 99% heating, PDF pages 68 to 73 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 2F figure is the St. Louis County cold-day number a Des Peres heat pump is sized against, so ask the installer to show the system's heating output at 2F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 84% of Des Peres on gas and 15% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Des Peres home has 10 rooms and was built around 1976, 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 Des Peres. The public number is the number the contractor quotes from.
No local contractor is named on this door for Des Peres yet. A request from this page goes to the first licensed shop that takes the door.