What California homes are up against.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31. · U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates
A homeowner deciding whether a furnace repair can wait is really asking how much more work that furnace has ahead of it. Homes in California run heat about seven months a year, from November through May. That kind of stretch means the burner and the ignition system are cycling on and off across most of the calendar, not just during a few harsh weeks, so a part already struggling gets tested again and again rather than getting a long rest to cover for it. A short stretch of standing off in summer is not much time for a hidden fault to stay hidden.
Before new equipment goes in, whatever is already carrying air or power through the attic and walls has to be opened up and looked at. A contractor cannot assume the ductwork is sealed the way it should be, or that the electrical panel has room for what a modern system draws. Half the homes in California were built in 1976 or earlier (2020-2024 ACS 5-year). That means this kind of check is not a rare exception a technician runs into now and then, it is close to the ordinary condition of the job anywhere in the state. What gets found determines whether the install is straightforward or needs extra work first.
How does your California county compare on severe weather?
2015–2024 · Source: NOAA National Centers for Environmental Information, Storm Events Database.
Wherever a home sits, the equipment outside it faces wind, hail and driven rain, and a unit knocked out of level or dented at the cabinet will wear faster and run worse. A condenser needs to sit level, anchored to its pad, with the coil and cabinet clear of damage. If your county sits high on this list, have a contractor check where the outdoor unit sits, how it is anchored, and the condition of the unit itself.
California requires HVAC contractors to hold a state license.
Licenses are issued by the Contractors State License Board.
Look up a contractor's license on the Contractors State License Board's website.Sources: California Legislative Counsel · Contractors State License Board