Charleston / Folly Beach
Folly Beach is about 11 miles from the Census center point for Charleston in a straight line and covers 12.507 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).
Folly Beach has 1,267 residents (give or take 331) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4526035, checked 2026-10-19), about 101 people per square mile.
The quote form takes a ZIP code; for Folly Beach that is 29412, 29439 (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).
Folly Beach is spread out at 101 people per square mile across 12.507 square miles of land, so a long refrigerant line run between the outdoor unit and the farthest indoor head is the sizing question an installer checks first.
Of the 619 occupied homes in Folly Beach, 33% heat with natural gas, 0% with heating oil, 67% with electricity and 0% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4526035, checked 2026-10-19).
Folly Beach has about the Charleston County oil share of 0% and 9 points less electric heat than the county's 76% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US45019, checked 2026-10-19).
Electricity already heats 67% of Folly Beach homes, ahead of gas at 33%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
The median Folly Beach home was built in 1990 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4526035, checked 2026-10-19) and the median home has 4.8 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4526035, checked 2026-10-19).
Folly Beach has 2,221 housing units, 3% built before 1940 and 30% before 1980, with 27% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4526035, checked 2026-10-19).
Folly Beach has 12 points fewer homes built after 2000 than the county's 39% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US45019, checked 2026-10-19).
65% of Folly Beach homes are single-family detached, 9% are in two- to four-unit buildings and 20% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4526035, checked 2026-10-19).
5% of Folly Beach homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4526035, checked 2026-10-19), so beside the 65% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Folly Beach has 7 points more detached houses than Charleston County overall (58%) (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US45019, checked 2026-10-19).
Only 5% of Folly Beach homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4526035, 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.
No electric utility is on file for Folly Beach 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 Folly Beach is $102,279 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US4526035, 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: 28F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Charleston County row, 99% heating, PDF pages 105 to 107 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 28F figure is the Charleston County cold-day number a Folly Beach heat pump is sized against, so ask the installer to show the system's heating output at 28F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Folly Beach home has 4.8 rooms and was built around 1990, 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 Folly Beach. The public number is the number the contractor quotes from.
No local contractor is named on this door for Folly Beach yet. A request from this page goes to the first licensed shop that takes the door.