I would too, but I would also be worried about the idea of being sealed in. Concrete is cheap. So is welding and thermite.

How does it compare against a Firewalla?

Canada. Somewhere.

Done

Waterfall: Spend 10 years compiling written functional and technical requirements. Cancel the program due to budget overrun.

This stupid house initially had three water heaters. A. 110 volt little heater that only ran the kitchen sink and the dishwasher. A 55 gallon water heater to run one bathroom and the laundry. And a third 60 or 65 gallon water heater to run two bathrooms and that was it. Isn’t that crazy? I removed the 110 volt water heater and the 60 gallon water heater, and now I need to replace the 55 with a heat pump water heater. This is probably something worth doing. It should consume a lot less electricity and I intend to disable the resistance heater for it. I will get more capacity to help.

That stupid 55 gallon water heater is framed into a wall, which is patently insane.

I wish you luck and I would strongly suspect the water heater is your culprit.

Closed in the winter, Open most of the summer so that the whole house fan can pull air in and through the bedroom cooling things down.