Should Morro Bay switch to a heat pump?

In Morro Bay, a heat pump would cost more to run each year than what you have now. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $1,000 after a $2,000 federal tax credit. Running costs here land $13 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Morro Bay's own climate and rates talking, not a hedge or a caveat.

Morro Bay's weather, in the numbers that matter

2738 heating degree days pile up here every year, so Morro Bay has a mild winter by US standards; the cooling side runs to 17 cooling degree days, where summers rarely ask much of an air conditioner. 45°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 44.2°F on file. Worked through the model, that's a seasonal COP of 3.54 on the standard unit fit for this climate. Morro Bay's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. These numbers come from PORT SAN LUIS, the closest NOAA station, 14.5 miles out.

What it actually costs to run, year to year

A 2000-square-foot house here would pull roughly 1,958 heating kilowatt-hours annually on top of cooling, totalling about $648 a year on electricity. That compares with roughly 29 Mcf a year of gas at Morro Bay's 22.01 per-Mcf rate — about $635 a year — against a local electricity rate of 32.83¢/kWh. 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 $1,193 behind.

Electric resistance heat in Morro Bay, compared

Gas isn't universal in Morro Bay — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,636 a year comes back this way, enough that the 3.4-year payback clears the $5,500 premium comfortably within the equipment's life.

Morro Bay against the rest of the country

Morro Bay lands at position 2017 out of 3206 cities on heating severity (coldest is 1), and 3069 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.

What to do with this number in Morro Bay

Morro Bay, California is home to about 10,591 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 Morro Bay, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

More on how this number was built

The methodology guide walks through exactly how Morro Bay's 3.54 seasonal COP and the rest of this page's numbers get built. Morro Bay is one of the cities where running costs land higher every year, not just slower to pay back — the guide to where this happens lays out why.