San Francisco / Napa
Napa has 78,239 residents (give or take 71) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US0650258, checked 2026-10-19), about 4,334 people per square mile.
Napa is about 56 miles from the Census center point for San Francisco in a straight line and covers 18.054 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).
4,334 people per square mile puts Napa in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
Of the 29,984 occupied homes in Napa, 67% heat with natural gas, 0% with heating oil, 28% with electricity and 2% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US0650258, checked 2026-10-19).
Gas heats 67% of Napa against electricity at 28%, and a cold-climate heat pump sized for this market replaces the gas system outright, so the usual quote is a whole-home install.
Napa has about the Napa County oil share of 0% and the same 28% electric share (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US06055, checked 2026-10-19).
Napa has 32,141 housing units, 9% built before 1940 and 61% before 1980, with 16% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US0650258, checked 2026-10-19).
Napa has 3 points fewer 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 Napa home was built in 1974 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US0650258, checked 2026-10-19) and the median home has 5.2 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US0650258, checked 2026-10-19).
62% of Napa homes are single-family detached, 7% are in two- to four-unit buildings and 18% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US0650258, checked 2026-10-19).
41% of Napa homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US0650258, checked 2026-10-19), so beside the 62% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Napa has 5 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).
41% of Napa homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US0650258, checked 2026-10-19), so the market splits between resident-led jobs where the occupant picks the system and landlord-led jobs where they do not, and the rebate paperwork differs.
61% of Napa homes were built before 1980 and only 16% in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US0650258, 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 Napa 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 Napa address before counting it. With 28% of Napa homes already on electric heat and 69% 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 Napa is $105,963 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US0650258, 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: 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 Napa 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 67% of Napa on gas and 28% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Napa home has 5.2 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 Napa. The public number is the number the contractor quotes from.
No local contractor is named on this door for Napa yet. A request from this page goes to the first licensed shop that takes the door.