Ephrata, PA: the heat pump payback math

Ephrata is a place where a heat pump genuinely costs more to operate than the alternative. $3,500 is what Ephrata 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. The heat pump would cost about $4 more a year to run than the furnace it replaces — a premium with no payback. That's Ephrata's own climate and rates talking, not a hedge or a caveat.

Ephrata's weather, in the numbers that matter

Ephrata has a real but manageable winter — 4332 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 1145 cooling degree days. Sizing runs off the design temperature, not the average day: 8.1°F here (record low 7°F), which works out to a seasonal COP of 2.89 for the cold-climate class of unit this climate calls for. A cold-climate unit is the right call in Ephrata — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station LANCASTER AIRPORT, 7.3 miles from Ephrata — the closest one on record.

What it actually costs to run, year to year

A 2000-square-foot house here would pull roughly 3,796 heating kilowatt-hours annually on top of cooling, totalling about $990 a year on electricity. Ephrata's gas rate of 15.04 per Mcf, applied to the 45 Mcf a year the furnace burns, puts its running cost near $986 a year, against 20.75¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs past the 15-year equipment life, for a 15-year net position $3,555 behind.

The other scenario: no gas furnace to begin with

Not every home in Ephrata has gas service. Swap the comparison to resistance heat instead of gas, and Ephrata's answer improves. The saving here runs about $1,594 a year, which recovers the extra $8,000 spent going electric in roughly 5 years.

Ephrata against the rest of the country

Ranked against the other 3206 cities covered, Ephrata comes in at 1291 for heating severity — 1 would be the coldest place in the dataset — and 2556 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.

Next step for 13,719 people in Ephrata

Ephrata, Pennsylvania is home to about 13,719 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 Ephrata, nothing is lost by holding off until the current equipment genuinely fails.

Line up a few local HVAC quotes before you decide.

Reading further on this page's numbers

The methodology guide walks through exactly how Ephrata's 2.89 seasonal COP and the rest of this page's numbers get built. At a 8.1°F design temperature, Ephrata sits in cold-climate territory; the guide to that class of unit explains why.