Heat Pump Payback in Addison, TX
Should Addison switch to a heat pump?
In Addison, the extra upfront cost technically comes back, just not before the equipment wears out. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. That premium is recovered through $361 of lower running costs every year, landing the payback clock at roughly 15.2 years. That's a technicality, not a recommendation, for anyone actually living in Addison.
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How cold Addison actually gets
Degree days tell the story here: Addison racks up 1620 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3408 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 18.9°F here (coldest 2024 reading 9.5°F), which works out to a seasonal COP of 3.15 for the cold-climate class of unit this climate calls for. Mild on average, but the occasional cold snap is what sizes the equipment: at a 18.9°F design temperature Addison falls just under the 25°F line where a standard heat pump starts leaning on resistance backup, so the model prices a cold-climate unit to be safe. Source: NOAA station Addison Airport, 0.4 miles from Addison, the closest one on record.
The yearly running costs in Addison
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,302 kWh a year to keep it warm, plus cooling, for a combined electric bill near $680 a year. That compares with roughly 17 Mcf a year of gas at Addison's $19.42 per-Mcf rate, about $1,041 a year with the old AC included, against a local electricity rate of 16.15¢/kWh. 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 $80 behind.
How sensitive Addison's result is to prices
In Addison 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 Addison: the heat pump is worth it within a decade if it costs less than $3,610 more than replacing the furnace and AC, and within 7 years if the gap is under $2,527.
The other scenario: no gas furnace to begin with
Plenty of homes in Addison heat with electricity alone, no gas line involved. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. About $696 a year comes back this way, enough that the 14.4-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Addison ranks in this dataset
Ranked against the other 3206 cities covered, Addison comes in at 2648 for heating severity, 1 would be the coldest place in the dataset, and 2170 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 if you live in Addison
Addison, Texas is home to about 17,257 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 Addison, 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 Addison's 3.15 seasonal COP and payback figure. Addison's 18.9°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here, see what that changes in the cold-climate unit guide.