Should Heath switch to a heat pump?

In Heath, 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). Lower bills claw that back: about $334 saved annually, for a payback of roughly 10.5 years. It's a genuine toss-up here — Heath's numbers don't point clearly either way.

How cold Heath actually gets

Degree days tell the story here: Heath 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. 15.8°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 9.5°F on file. Worked through the model, that's a seasonal COP of 3.08 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Heath — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from RALPH M HALL ROCKWALL MUNICIP, the closest NOAA station, 5.6 miles out.

The month-to-month numbers for Heath

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. Heath's gas rate of 19.42 per Mcf, applied to the 19 Mcf a year the furnace burns, puts its running cost near $976 a year, against 16.15¢ per kWh for electricity. 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

Not every home in Heath has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $717 a year, which recovers the extra $8,000 spent going electric in roughly 11.2 years.

How Heath compares nationally

Among 3206 cities, Heath's winter puts it at rank 2514 for severity, while its size puts it at rank 2899 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.

What to do with this number in Heath

Heath, Texas is home to about 11,499 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 Heath, nothing is lost by holding off until the current equipment genuinely fails.

Line up a few local HVAC quotes before you decide.

Where Heath's figure comes from

The methodology guide walks through exactly how Heath's 3.08 seasonal COP and the rest of this page's numbers get built. At a 15.8°F design temperature, Heath sits in cold-climate territory; the guide to that class of unit explains why.