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Philadelphia is a city of rowhomes on gas heat: 56% of its 748,270 housing units are single-family attached, 8% detached, 14% in two- to four-unit buildings and 21% in buildings of five or more (Census ACS 2020-2024, table B25024, https://data.census.gov/table/ACSDT5Y2024.B25024?g=160XX00US4260000, checked 2026-10-20), 83% of those units were built before 1980 and 40% before 1940 (Census ACS 2020-2024, table B25034, https://data.census.gov/table/ACSDT5Y2024.B25034?g=160XX00US4260000, checked 2026-10-20), and of the 679,428 occupied homes natural gas heats 70%, electricity 25%, oil 3% and propane 2% (Census ACS 2020-2024, table B25040, https://data.census.gov/table/ACSDT5Y2024.B25040?g=160XX00US4260000, checked 2026-10-20). The typical Philadelphia job is a rowhome with a shared party wall on both sides, a gas furnace in the basement and no side yard for the outdoor unit, so the condenser goes on the front stoop, in a narrow rear yard or on a flat roof section, and the permit application names the exact location before the installer orders equipment. With 83% of the stock from before 1980 and uninsulated brick party walls on both exposures, the Manual J starts from the envelope, not the square footage, and the audit that precedes the rebate application usually finds the attic and the basement rim joist before it finds the walls.
South Philly, Fishtown, and West Philly rows were piped for steam or hot water. A ductless heat pump can cool the second floor you currently run with window units.
Center City, Old City, Rittenhouse Square, Society Hill, Northern Liberties, Fishtown, South Philadelphia, University City Philadelphia, Manayunk, Chestnut Hill, Mount Airy, Germantown Philadelphia.
Upper Darby, Haverford, Radnor, Chester, Ridley, Springfield, Marple, Concord, Upper Chichester, Aston, Newtown, Nether Providence, Yeadon, Lansdowne, Upper Providence, Darby, Bethel, Collingdale, Brookhaven, Ridley Park, Glenolden, Thornbury, Clifton Heights, Folcroft, Swarthmore, Prospect Park, Sharon Hill, Norwood, Media, Edgmont, Aldan, Tinicum, Chadds Ford, Lower Chichester, Upland, Chester Heights, Morton, East Lansdowne, Colwyn, Eddystone, Marcus Hook, Parkside, Trainer, Millbourne, Rose Valley, Rutledge.
Abington, Cheltenham, Upper Dublin, Horsham, Upper Moreland, Lower Moreland, Lower Gwynedd, Hatboro, Ambler, Jenkintown, Narberth, Rockledge, Bryn Athyn.
Bensalem, Bristol, Middletown, Falls, Lower Makefield, Lower Southampton, Morrisville, Yardley, Penndel, Tullytown, Langhorne, Langhorne Manor, Hulmeville.
Tredyffrin, West Goshen, West Whiteland, West Chester, Uwchlan, East Goshen, Caln, East Whiteland, West Bradford, Upper Uwchlan, Coatesville, New Garden, Willistown, Westtown, Easttown, East Bradford, East Brandywine, Kennett, East Nottingham, London Grove, West Caln, Honey Brook, Downingtown, Valley, East Marlborough, East Fallowfield, West Brandywine, Kennett Square, Charlestown, Oxford, New London, Lower Oxford, Penn, East Caln, Sadsbury, Pocopson, Franklin, Birmingham, Parkesburg, Pennsbury, Wallace, Malvern, London Britain, West Nottingham, West Grove, Londonderry, Upper Oxford, West Fallowfield, West Sadsbury, East Nantmeal, South Coatesville, Elk, Newlin, Atglen, Highland, Avondale, West Marlborough, Modena.
Ask the program or your installer to confirm eligibility and amounts for your address.
See what each program pays in PhiladelphiaThe worst day to pick a heat pump is the day the old system dies. See the number now, decide later.
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