San Francisco / Yountville
Yountville has 3,348 residents (give or take 18) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US0686930, checked 2026-10-19), about 2,247 people per square mile.
Yountville is about 59 miles from the Census center point for San Francisco in a straight line and covers 1.49 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).
Median household income in Yountville is $80,342 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US0686930, 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.
49% of Yountville homes are single-family detached, 10% are in two- to four-unit buildings and 10% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US0686930, checked 2026-10-19).
33% of Yountville homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US0686930, checked 2026-10-19), so beside the 49% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Yountville has 18 points fewer detached houses than Napa County overall (67%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US06055, checked 2026-10-19).
Of the 1,489 occupied homes in Yountville, 64% heat with natural gas, 0% with heating oil, 34% with electricity and 0% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US0686930, checked 2026-10-19).
Gas heats 64% of Yountville against electricity at 34%, and a cold-climate heat pump sized for this market replaces the gas system outright, so the usual quote is a whole-home install.
Yountville has about the Napa County oil share of 0% and 6 points more electric heat than the county's 28% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US06055, checked 2026-10-19).
No electric utility is on file for Yountville on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
LADWP Consumer Rebate Program heat pump HVAC, run by LADWP, is a live program for California addresses and publishes its terms without one headline figure (registry row 24 verified 2026-10-14, https://www.ladwp.com/residential-services/assistance-programs/consumer-rebate-program, checked 2026-10-16); confirm eligibility for the Yountville address before counting it. With 34% of Yountville homes already on electric heat and 64% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Yountville has 1,822 housing units, 8% built before 1940 and 38% before 1980, with 22% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US0686930, checked 2026-10-19).
Yountville has 3 points more homes built after 2000 than the county's 19% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US06055, checked 2026-10-19).
The median Yountville home was built in 1987 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US0686930, checked 2026-10-19) and the median home has 5 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US0686930, checked 2026-10-19).
Heating design temperature: 26F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Napa County row, 99% heating, PDF pages 11 to 13 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 26F figure is the Napa County cold-day number a Yountville heat pump is sized against, so ask the installer to show the system's heating output at 26F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 64% of Yountville on gas and 34% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Yountville home has 5 rooms and was built around 1987, 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 Yountville. The public number is the number the contractor quotes from.
No local contractor is named on this door for Yountville yet. A request from this page goes to the first licensed shop that takes the door.