Heat Pump Payback in Rockport, TX
Will a heat pump pay off in Rockport, TX?
This one's marginal in Rockport: it only clears if you stay long enough. $3,000 is what Rockport would pay extra to go electric rather than replace the furnace and AC with the same again. Lower bills claw that back: about $340 saved annually, for a payback of roughly 8.8 years. It's a genuine toss-up here, Rockport's numbers don't point clearly either way.
Checking a different city
Rockport is one of 3206 cities covered here, each run through the same model. Search another below.
Rockport's weather, in the numbers that matter
493 heating degree days pile up here every year, so Rockport barely has a winter to speak of; the cooling side runs to 4227 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 34°F, and the coldest daily reading in the 2024 station record was 24.1°F. That puts the seasonal coefficient of performance at 3.21 for the recommended standard unit. Rockport's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. These numbers come from Rockport, the closest NOAA station, 2.1 miles out.
Rockport's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 389 heating kilowatt-hours annually on top of cooling, totalling about $645 a year on electricity. Rockport's gas rate of $19.42 per Mcf, applied to the 5 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $984 a year, against 16.15¢ per kWh for electricity. Buying outright rather than at replacement time stretches payback to longer than the 15-year equipment life. Over 15 years, compared with a like-for-like replacement, the heat pump leaves you $2,094 ahead.
What would change Rockport's answer
In Rockport 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 Rockport: the heat pump is worth it within a decade if it costs less than $3,400 more than replacing the furnace and AC, and within 7 years if the gap is under $2,380.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Rockport, many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Rockport'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.
How Rockport compares nationally
Among 3206 cities, Rockport's winter puts it at rank 3061 for severity, while its size puts it at rank 2977 for population, 1 in both cases being the extreme. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Next step if you live in Rockport
Rockport, Texas is home to about 11,069 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 Rockport, 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
The methodology guide walks through exactly how Rockport's 3.21 seasonal COP and the rest of this page's numbers get built. Homes in Rockport without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.