The reason I contacted the manufacturer and issue is. When I had my 300g in yucaipa during the 4years that tank was up and running our home had 3 slab leaks. I talked to two other neighbors and they had 1 slab leak each. It seems like quite a coincidence that in 4ys of time that house got 3 slab leaks. After the 3rd leak my plumber was like “hey man , idk what the fuck is going on with this house. I’ve only had 1 other slab leaks in this neighborhood. But yours has had 3 now. I think you should have the house repiped with PEX tubing.” So the house got re-piped. Granted this house is already PEX tubing. But where I would be putting the tank sits 2 feet from the natural gas main.