Arlington / Franconia
Franconia has 18,335 residents (give or take 1,266) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US5129552, checked 2026-10-19), about 5,270 people per square mile.
Franconia is about 8 miles from the Census center point for Arlington in a straight line and covers 3.479 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 Franconia that is 22310, 22315 (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).
Median household income in Franconia is $152,474 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US5129552, 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.
5,270 people per square mile puts Franconia in suburban density, where the outdoor unit usually sits in a side yard and the noise is not an issue for neighbors.
21% of Franconia homes are single-family detached, 4% are in two- to four-unit buildings and 24% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US5129552, checked 2026-10-19).
24% of Franconia homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US5129552, checked 2026-10-19), so beside the 21% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Franconia has 25 points fewer detached houses than Fairfax County overall (46%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US51059, checked 2026-10-19).
Of the 7,501 occupied homes in Franconia, 42% heat with natural gas, 1% with heating oil, 57% with electricity and 0% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US5129552, checked 2026-10-19).
Electricity already heats 57% of Franconia homes, ahead of gas at 42%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Franconia has about the Fairfax County oil share of 1% and 15 points more electric heat than the county's 42% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US51059, checked 2026-10-19).
No electric utility is on file for Franconia on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Franconia has 7,629 housing units, 1% built before 1940 and 22% before 1980, with 12% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US5129552, checked 2026-10-19).
Franconia has 8 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=050XX00US51059, checked 2026-10-19).
The median Franconia home was built in 1988 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US5129552, checked 2026-10-19) and the median home has 6 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US5129552, checked 2026-10-19).
Heating design temperature: 14F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Fairfax County row, 99% heating, PDF pages 127 to 133 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 14F figure is the Fairfax County cold-day number a Franconia heat pump is sized against, so ask the installer to show the system's heating output at 14F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Franconia home has 6 rooms and was built around 1988, 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 Franconia. The public number is the number the contractor quotes from.
No local contractor is named on this door for Franconia yet. A request from this page goes to the first licensed shop that takes the door.