Heat Pump Payback in Port Arthur, TX
Heat pump vs. gas furnace in Port Arthur, TX
In Port Arthur, the math is close enough that it comes down to how long you plan to stay. $3,000 is what Port Arthur would pay extra to go electric rather than replace the furnace and AC with the same again. Lower bills claw that back: about $301 saved annually, for a payback of roughly 10 years. It's a genuine toss-up here, Port Arthur's numbers don't point clearly either way.
Not the city you meant?
Port Arthur is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Port Arthur actually gets
Degree days tell the story here: Port Arthur racks up 871 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3316 cooling degree days on the cooling side. 32.2°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 21.9°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.16 on the standard unit fit for this climate. Port Arthur's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. Climate figures trace to the nearest NOAA station, Port Arthur, 3.2 miles from Port Arthur.
Port Arthur's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 698 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $569 a year. Port Arthur's gas rate of $19.42 per Mcf, applied to the 9 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $870 a year, against 16.15¢ per kWh for electricity. If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $1,513 ahead.
What would change Port Arthur's answer
In Port Arthur the cooling savings outweigh the extra electricity for heating, so no plausible change in the electricity rate would make the old furnace and AC cheaper to run. A useful quote test for Port Arthur: the heat pump is worth it within a decade if it costs less than $3,010 more than replacing the furnace and AC, and within 7 years if the gap is under $2,107.
If your home heats with electric baseboard instead of gas
Plenty of homes in Port Arthur heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Port Arthur's answer improves. The gap still doesn't close: the $7,500 incremental cost outlasts the 15-year equipment life here even against resistance heat.
Where Port Arthur ranks in this dataset
Ranked against the other 3206 cities covered, Port Arthur comes in at 2941 for heating severity, 1 would be the coldest place in the dataset, and 736 by population, where 1 is largest. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Deciding what's next in Port Arthur, TX
Port Arthur, Texas is home to about 55,799 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Port Arthur, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
Every constant behind this page, the 3.16 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Homes in Port Arthur without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.