Hello, I posted my query here a while back but unfortunately it appears to have been left to fester :confused: (query was hot water from cold water tap). After a couple more visits by a plumber, his view is that the hot water tank is overheating, venting hot water into the cold water tank at the...

I would like to know if I go away for two days and shut my main water shutoff valve can I leave my gas hot water tank on. I saw two answers To a similar question and one answer said you can leave it on and the other Said you had to shut it off. I am confused now as to whether I can leave the gas...

It's me again. I meant an under the air conditioner hot water heater. The current one is 31" high. It has an expansion tank, but I was told it wasn't necessary. I'm in a second floor condo. Is it really necessary and if so, why? Thanks a lot.

I need a new water heater and one plumber says the expansion tank on the side is not necessary. Is it? What is the average cost of a 40 gal, under air water heater already hard wired? 2nd floor. Thanks

Read a post here concerning the water line back flow preventer/expansion tank and am familiar with its operation and purpose when using city water. My question is, is this setup recommended or even needed on a well water system? My feeling is that the holding tank would take up any expansion. ...