Our 40 gallon electric water gave up the ghost two days ago; the thermostat wouldn't shut off, and since is 15 years old, we turned off the circuit breaker, picked out a similar sized 50 gallon tank, and arranged to have it installed today.
When the installers showed up (with a 'tall' tank, not the 'medium' we ordered to fit in the space), they said they couldn't do it anyway, because we have a modular home (stick built in two sections and assembled on site in 1977), and they didn't have a license to do work on modular homes. I don't get it, since it's built like any other home, we've had the water heater replaced twice in all those years, and it was never an issue. But OK.
The other thing that came up was how many bedrooms and baths we have (3 bedrooms, 3 baths). Apparently that requires a tank with a delivery rate of 67 or better; the tank we selected was 62. Then there are permit and inspection requirements as well and what started as a $900 bill will now be $1500.
So here we are on Christmas Eve with no hot water. I can cope. But I'm frustrated that what seemed like a simple thing has gotten so complicated. Mind you, we have lived just fine with a 40 gallon tank for 15 years, but thought we'd take the opportunity to upgrade. If we replace the 40 gal with another one of the same size would be have to go through all these hoops? I can buy a Rheems for $400.