Is a heat pump worth it in Alamo?
The math in Alamo isn't close — a heat pump wins outright. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $1,000 after a $2,000 federal tax credit. Alamo's residents would see roughly $381 a year back in running costs, putting the payback around 2.6 years. That verdict holds specifically for Alamo's own climate and rates, not a national average.
Alamo's weather, in the numbers that matter
Degree days tell the story here: Alamo racks up 319 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 4957 cooling degree days on the cooling side. 39°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 27°F on file. Worked through the model, that's a seasonal COP of 3.36 on the standard unit fit for this climate. Alamo's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Source: NOAA station MC ALLEN MILLER INTL ARPT, 8.5 miles from Alamo — the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 240 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $721 a year. The gas furnace it replaces burns roughly 3 Mcf a year at 19.42 per Mcf here, for a running cost near $1,102 a year (electricity here runs 16.15¢/kWh). Looked at as a full purchase rather than an incremental one, payback here is roughly 28.9 years, leaving the 15-year total $4,710 ahead.
The other scenario: no gas furnace to begin with
Not every home in Alamo has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $447 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $5,500 spent up front comes back in about 12.3 years.
How Alamo compares nationally
Ranked against the other 3206 cities covered, Alamo comes in at 3118 for heating severity — 1 would be the coldest place in the dataset — and 1868 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.
Next step for 20,694 people in Alamo
Alamo, Texas is home to about 20,694 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. Given the math above, Alamo is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Line up a few local HVAC quotes before you decide.
Where Alamo's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Alamo's 3.36 seasonal COP and payback figure. The $2,000 federal credit baked into Alamo's number is explained, with the before-and-after math, in the tax credit guide.