Charleston / Port Royal
Port Royal has 15,579 residents (give or take 32) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4558030, checked 2026-10-19), about 916 people per square mile.
Port Royal is about 53 miles from the Census center point for Charleston in a straight line and covers 17.005 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 Port Royal that is 29902, 29905, 29935 (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 Port Royal is $74,870 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US4558030, 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.
44% of Port Royal homes are single-family detached, 6% are in two- to four-unit buildings and 36% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4558030, checked 2026-10-19).
62% of Port Royal homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4558030, checked 2026-10-19), so beside the 44% detached houses there is a real share of jobs where the landlord, not the resident, signs the quote.
Port Royal has 20 points fewer detached houses than Beaufort County overall (64%) and 19 points more five-plus-unit buildings than the county's 17% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US45013, checked 2026-10-19).
With 62% of Port Royal homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4558030, checked 2026-10-19), most heat pump quotes here are landlord-driven: the landlord signs the contract and picks the equipment, and the tenant sees the lower bill.
Of the 4,676 occupied homes in Port Royal, 18% heat with natural gas, 0% with heating oil, 81% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4558030, checked 2026-10-19).
Electricity already heats 81% of Port Royal homes, ahead of gas at 18%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Port Royal has about the Beaufort County oil share of 0% and 1 points more electric heat than the county's 80% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US45013, checked 2026-10-19).
No electric utility is on file for Port Royal on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Port Royal has 5,111 housing units, 5% built before 1940 and 15% before 1980, with 66% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4558030, checked 2026-10-19).
Port Royal has 4 points more pre-1940 homes than Beaufort County as a whole (1%) and 18 points more homes built after 2000 than the county's 48% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US45013, checked 2026-10-19). An older stock means more insulation upgrades before the heat pump goes in.
The median Port Royal home was built in 2008 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4558030, 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=160XX00US4558030, checked 2026-10-19).
66% of Port Royal housing was built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4558030, checked 2026-10-19), and homes that recent usually meet the insulation codes in place at the time, so a heat pump sized to the floor plan lands closer to the real load than it would in an older neighborhood.
Heating design temperature: 30F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Beaufort 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 30F figure is the Beaufort County cold-day number a Port Royal heat pump is sized against, so ask the installer to show the system's heating output at 30F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Port Royal home has 5 rooms and was built around 2008, 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 Port Royal. The public number is the number the contractor quotes from.
No local contractor is named on this door for Port Royal yet. A request from this page goes to the first licensed shop that takes the door.