Chicago / Buffalo Grove
Buffalo Grove has 42,891 residents (give or take 67) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US1709447, checked 2026-10-19), about 4,483 people per square mile.
Buffalo Grove is about 27 miles from the Census center point for Chicago in a straight line and covers 9.568 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 Buffalo Grove that is 60089 (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).
4,483 people per square mile puts Buffalo Grove in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 16,213 occupied homes in Buffalo Grove, 88% heat with natural gas, 0% with heating oil, 10% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US1709447, checked 2026-10-19).
Gas heats 88% of Buffalo Grove against electricity at 10%, 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.
Buffalo Grove has about the Lake County oil share of 0% and 5 points less electric heat than the county's 15% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US17097, checked 2026-10-19).
Buffalo Grove has 16,593 housing units, 1% built before 1940 and 45% before 1980, with 7% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US1709447, checked 2026-10-19).
Buffalo Grove has 7 points fewer pre-1940 homes than Lake County as a whole (8%) and 13 points fewer homes built after 2000 than the county's 20% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US17097, checked 2026-10-19).
The median Buffalo Grove home was built in 1981 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US1709447, checked 2026-10-19) and the median home has 6.2 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US1709447, checked 2026-10-19).
54% of Buffalo Grove homes are single-family detached, 5% are in two- to four-unit buildings and 27% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US1709447, checked 2026-10-19).
20% of Buffalo Grove homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US1709447, checked 2026-10-19), so beside the 54% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Buffalo Grove has 13 points fewer detached houses than Lake County overall (67%) and 11 points more five-plus-unit buildings than the county's 16% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US17097, checked 2026-10-19).
No electric utility is on file for Buffalo Grove on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Ameren Illinois Instant Incentives (ducted ASHP), run by Ameren Illinois, is a live program for Illinois addresses and lists a standard figure of $900 (registry row 45 verified 2026-10-15, https://amerenillinoissavings.com/residential/ducted-air-source-heat-pump/, checked 2026-10-16); confirm eligibility for the Buffalo Grove address before counting it. With 10% of Buffalo Grove homes already on electric heat and 90% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Median household income in Buffalo Grove is $129,395 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US1709447, 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: -3F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Lake County row, 99% heating, PDF pages 29 to 33 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 -3F figure is the Lake County cold-day number a Buffalo Grove heat pump is sized against, so ask the installer to show the system's heating output at -3F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 88% of Buffalo Grove on gas and 10% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Buffalo Grove home has 6.2 rooms and was built around 1981, 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 Buffalo Grove. The public number is the number the contractor quotes from.
No local contractor is named on this door for Buffalo Grove yet. A request from this page goes to the first licensed shop that takes the door.