Is a heat pump worth it in Wylie?
In Wylie, the math is close enough that it comes down to how long you plan to stay. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). Wylie's residents would see roughly $334 a year back in running costs, putting the payback around 10.5 years. It's a genuine toss-up here — Wylie's numbers don't point clearly either way.
How cold Wylie actually gets
Degree days tell the story here: Wylie racks up 1853 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 2871 cooling degree days on the cooling side. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 15.8°F, against a record low of 9.5°F. That puts the seasonal coefficient of performance at 3.08 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Wylie sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from RALPH M HALL ROCKWALL MUNICIP, the closest NOAA station, 8.6 miles out.
The month-to-month numbers for Wylie
Electricity use for heating alone comes out to about 1,523 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $641 a year. That compares with roughly 19 Mcf a year of gas at Wylie's 19.42 per-Mcf rate — about $976 a year — against a local electricity rate of 16.15¢/kWh. Looked at as a full purchase rather than an incremental one, payback here is roughly 40.4 years, leaving the 15-year total $1,515 ahead.
The other scenario: no gas furnace to begin with
Plenty of homes in Wylie heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Wylie's answer improves. The saving here runs about $717 a year, which recovers the extra $8,000 spent going electric in roughly 11.2 years.
Where Wylie ranks in this dataset
Among 3206 cities, Wylie's winter puts it at rank 2507 for severity, while its size puts it at rank 629 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.
Deciding what's next in Wylie, TX
Wylie, Texas is home to about 62,954 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 Wylie, 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
Nothing above is a black box: the methodology guide shows the full arithmetic behind Wylie's 3.08 seasonal COP and payback figure. At a 15.8°F design temperature, Wylie sits in cold-climate territory; the guide to that class of unit explains why.