In Southern California, there’s really no wrong time to have your heater serviced. If you lived in Vermont, sure, we would suggest having that done before the worst of winter takes hold. But with our weather, we can get away with having to service our furnace in the middle of the cold season.
That being said, we’re not suggesting that you wait until the last minute to have your heater serviced. In fact, we don’t recommend having any HVAC services in Mission Viejo, CA done at the very last minute. As soon as you notice a problem, it’s always a good idea to call it in. Almost nothing good comes out of putting it off! For example: