Atlanta / Marietta
Marietta has 62,263 residents (give or take 89) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US1349756, checked 2026-10-19), about 2,617 people per square mile.
Marietta is about 15 miles from the Census center point for Atlanta in a straight line and covers 23.789 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 Marietta that is 30060, 30064, 30067, 30090 (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 Marietta is $72,725 (ACS 2020-2024 5-year, table B19013, https://data.census.gov/table/ACSDT5Y2024.B19013?g=160XX00US1349756, 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.
43% of Marietta homes are single-family detached, 5% are in two- to four-unit buildings and 40% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US1349756, checked 2026-10-19).
With 40% of Marietta homes in buildings of five or more units and 43% detached, the condo association usually decides where outdoor units can go, so that approval comes before the quote. With 53% of Marietta homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US1349756, checked 2026-10-19), the landlord signs the quote in many of them.
Marietta has 22 points fewer detached houses than Cobb County overall (65%) and 18 points more five-plus-unit buildings than the county's 22% (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=050XX00US13067, checked 2026-10-19).
53% of Marietta homes are rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US1349756, 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.
Of the 24,707 occupied homes in Marietta, 61% heat with natural gas, 1% with heating oil, 37% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US1349756, checked 2026-10-19).
Gas heats 61% of Marietta against electricity at 37%, and a cold-climate heat pump sized for this market replaces the gas system outright, so the usual quote is a whole-home install.
Marietta has about the Cobb County oil share of 0% and 7 points more electric heat than the county's 30% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US13067, checked 2026-10-19).
No electric utility is on file for Marietta on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Georgia Power Home Energy Improvement Program heat pump conversion, run by Georgia Power, is a live program for Georgia addresses and covers qualifying equipment at $1,850 per system (registry row 28 verified 2026-10-14, https://www.georgiapower.com/residential/solutions/home-solutions.html, checked 2026-10-16); confirm eligibility for the Marietta address before counting it. With 37% of Marietta homes already on electric heat and 63% on gas, oil or propane, the row that applies depends on the name on the electric bill and the fuel coming out.
Marietta has 26,783 housing units, 2% built before 1940 and 33% before 1980, with 25% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US1349756, checked 2026-10-19).
Marietta has 6 points fewer homes built after 2000 than the county's 31% (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=050XX00US13067, checked 2026-10-19).
The median Marietta home was built in 1987 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US1349756, 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=160XX00US1349756, checked 2026-10-19).
Heating design temperature: 23F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Cobb County row, 99% heating, PDF pages 20 to 27 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 23F figure is the Cobb County cold-day number a Marietta heat pump is sized against, so ask the installer to show the system's heating output at 23F, not at the milder rating-label temperature.
Ask whether the quote is whole-home or partial-home, because with 61% of Marietta on gas and 37% already electric the two paths carry different rebate figures and different sizing.
Ask for the heat-loss calculation room by room; the median Marietta home has 5.2 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 Marietta. The public number is the number the contractor quotes from.
No local contractor is named on this door for Marietta yet. A request from this page goes to the first licensed shop that takes the door.