Hot water heaters should have leak detectors on them. They often don't. The higher end models do. Product differentiation strikes again.
Last water heater I had, the anode was A-OK, I had it checked about a year prior to the water heater failing.
Thermal stress destroys stuff.
They also don't repair damage. A really mean thing to do would be to replace the anode on a nearly-dead water heater right before selling a house. The minute the anode finishes rusting away, the heater could let go.
Curious what sort of load you put on yours to have such terrible luck.
ex. https://www.homedepot.com/p/Basement-Watchdog-Battery-Operat...
This doesn't help for catastrophic failures but for leaks it should.
Something’s wrong here. I’ve only seen 1 partial failure (a refrigerant leak reduced efficiency by 5x, but the AC still worked) in the last 15 years across several houses. You’ve got an order of magnitude more failures.
Do you live on a boat? :P
My current house's HVAC system was also done piss poorly in places and there can be a 15 degree difference between rooms, so that's going to be 10k+ to fix. Fun times.
[1]Despite the obscene maintenance costs, the luxury is worth it. Warm floors are really nice!