Is a heat pump worth it in Mount Vernon?

This one's marginal in Mount Vernon: it only clears if you stay long enough. $3,500 is what Mount Vernon 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. Lower bills claw that back: about $340 saved annually, for a payback of roughly 10.3 years. It's a genuine toss-up here — Mount Vernon's numbers don't point clearly either way.

How cold Mount Vernon actually gets

5087 heating degree days pile up here every year, so Mount Vernon has a cold winter that leans hard on heating equipment; the cooling side runs to 50 cooling degree days, where summers rarely ask much of an air conditioner. Sizing runs off the design temperature, not the average day: 15.8°F here (record low 10.4°F), which works out to a seasonal COP of 3.08 for the cold-climate class of unit this climate calls for. A cold-climate unit is the right call in Mount Vernon — 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 SKAGIT REGIONAL AIRPORT, the closest NOAA station, 5.9 miles out.

What it actually costs to run, year to year

Electricity use for heating alone comes out to about 4,182 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $603 a year. That compares with roughly 53 Mcf a year of gas at Mount Vernon's 17.62 per-Mcf rate — about $943 a year — against a local electricity rate of 14.27¢/kWh. Buy it outright, not incrementally, and payback stretches to 39.7 years; over 15 years the net position sits $1,598 ahead.

If your home heats with electric baseboard instead of gas

Gas isn't universal in Mount Vernon — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $1,244 a year, which recovers the extra $8,000 spent going electric in roughly 6.4 years.

How Mount Vernon compares nationally

Among 3206 cities, Mount Vernon's winter puts it at rank 602 for severity, while its size puts it at rank 1162 for population — 1 in both cases being the extreme. That's the coldest third of the dataset, where climate does most of the work behind this figure.

Next step for 35,344 people in Mount Vernon

Mount Vernon, Washington is home to about 35,344 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 Mount Vernon, nothing is lost by holding off until the current equipment genuinely fails.

Line up a few local HVAC quotes before you decide.

Where Mount Vernon's figure comes from

Nothing above is a black box: the methodology guide shows the full arithmetic behind Mount Vernon's 3.08 seasonal COP and payback figure. At a 15.8°F design temperature, Mount Vernon sits in cold-climate territory; the guide to that class of unit explains why.