Nashville / Portland
Portland has 13,449 residents (give or take 58) (ACS 2020-2024 5-year, table B01003, https://data.census.gov/table/ACSDT5Y2024.B01003?g=160XX00US4760280, checked 2026-10-19), about 888 people per square mile.
Portland is about 33 miles from the Census center point for Nashville in a straight line and covers 15.142 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).
Of the 5,018 occupied homes in Portland, 37% heat with natural gas, 0% with heating oil, 60% with electricity and 1% with propane (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4760280, checked 2026-10-19).
Electricity already heats 60% of Portland homes, ahead of gas at 37%, and a home on electric baseboard sees the biggest bill change from a heat pump because it replaces resistance heat one for one.
Portland has about the Sumner County oil share of 0% and 3 points more electric heat than the county's 57% (ACS 2020-2024 5-year, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=050XX00US47165, checked 2026-10-19).
Portland has 5,313 housing units, 2% built before 1940 and 20% before 1980, with 39% built in 2000 or later (ACS 2020-2024 5-year, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4760280, checked 2026-10-19).
The median Portland home was built in 1996 (ACS 2020-2024 5-year, table B25035, https://data.census.gov/table/ACSDT5Y2024.B25035?g=160XX00US4760280, checked 2026-10-19) and the median home has 5.8 rooms (ACS 2020-2024 5-year, table B25018, https://data.census.gov/table/ACSDT5Y2024.B25018?g=160XX00US4760280, checked 2026-10-19).
75% of Portland homes are single-family detached, 8% are in two- to four-unit buildings and 5% are in buildings of five or more units (ACS 2020-2024 5-year, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4760280, checked 2026-10-19).
With 75% detached houses and 8% in small multi-family buildings, a Portland quote is usually one or two outdoor units with ducted or ductless heads sized room by room. With 33% of Portland homes rented (ACS 2020-2024 5-year, table B25003, https://data.census.gov/table/ACSDT5Y2024.B25003?g=160XX00US4760280, checked 2026-10-19), the landlord signs the quote in many of them.
No electric utility is on file for Portland on this door yet, so this page does not name one; the name on the bill decides which rebate path applies.
Heating design temperature: 15F. Source: ENERGY STAR Design Temperature Limit Reference Guide (2019 Edition), Sumner County row, 99% heating, PDF pages 111 to 115 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 15F figure is the Sumner County cold-day number a Portland heat pump is sized against, so ask the installer to show the system's heating output at 15F, not at the milder rating-label temperature.
Ask for the heat-loss calculation room by room; the median Portland home has 5.8 rooms and was built around 1996, 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 Portland. The public number is the number the contractor quotes from.
No local contractor is named on this door for Portland yet. A request from this page goes to the first licensed shop that takes the door.