Webb City, MO: the heat pump payback math
In Webb City, the extra upfront cost technically comes back, just not before the equipment wears out. $3,500 is what Webb City would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. That premium is recovered through $232 of lower running costs every year, landing the payback clock at roughly 15.1 years. That's a technicality, not a recommendation, for anyone actually living in Webb City.
Webb City's weather, in the numbers that matter
3249 heating degree days pile up here every year, so Webb City has a real but manageable winter; the cooling side runs to 1898 cooling degree days, where summers are hot enough that cooling matters as much as heating. 3°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -7.1°F on file. Worked through the model, that's a seasonal COP of 2.77 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Webb City — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station JOPLIN REGIONAL AIRPORT, 1.7 miles from Webb City — the closest one on record.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 2,970 heating kilowatt-hours annually on top of cooling, totalling about $589 a year on electricity. Webb City's gas rate of 14.94 per Mcf, applied to the 34 Mcf a year the furnace burns, puts its running cost near $821 a year, against 12.83¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 58.1 years, for a 15-year net position $13 behind.
The other scenario: no gas furnace to begin with
Not every home in Webb City has gas service. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. The saving here runs about $782 a year, which recovers the extra $8,000 spent going electric in roughly 10.2 years.
Webb City against the rest of the country
Ranked against the other 3206 cities covered, Webb City comes in at 1836 for heating severity — 1 would be the coldest place in the dataset — and 2602 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
Next step for 13,391 people in Webb City
Webb City, Missouri is home to about 13,391 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 Webb City, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Webb City's figure comes from
Every constant behind this page — the 2.77 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. At a 3°F design temperature, Webb City sits in cold-climate territory; the guide to that class of unit explains why.