Please any feedback on best sources for hot water heaters is appreciated.

The unit requires three 50 amp 2-pole breakers and three runs of 8-2 romex. I understand that different states have different electrical codes...my question is for Pennsylvania. Is there any reason why I would have to install a separate sub-panel for the three 50 amp 2-pole breakers that supply the heater, or can I just install the three breakers in my main panel? The heater will only be about 10-15 feet from where the panel is.

I need a new gas hot water heater & trying to decide on whether to get a tankless or solar hot water heater. Can't anyone give me some advice on which is better or a site that could compare the two?
I do understand that solar runs on the sun & requires no electricity but, seriously, is one better than the other? Pro's & cons is what I'm looking for. I had a conventional 50 gal. gas water heater prior to it flooding my garage out.
Currently there are 2 in the household but desire a system capable for 4-6 people.
I am in Az. so the sun shines pretty much all the time during the day.

My plumber has warned me that the motor on the Noritz tankless water heater makes a noise when it's running. Can anyone compare the volume to a common household item? Is it similar to the fan on a computer? An electric can opener? I'm not super-sensitive to noise, but I don't want it to sound like we're drilling for oil every time someone washes their hands.

Thanks in advance.

I just moved into the house about 3 months ago and for my first month living here I bought a tankless water heater and replaced my regular gas heater because the tankless takes up less space. I have it mounted on the outside. I paid a plumber to install it. It is a rheem water heater. For the past 3 months my bills have ranged from 300-400 in just gas alone. I had the gas company come out and I dont have a leak and the meter isnt running constantly. It only runs when I use the gas in the house. I dont have a kitchen yet installed so I don't use a stove. I havent turned on my ac/heat for the past 2 months so the only hting that could be using the gas is when I take a shower which is a 5 min shower daily. It's just me in the house. So why is my bill so high?? I am so concerned b/c I paid for the water heater got it installed and now it is costing me a lot of money. I checked to see what the previous owner used to pay in gas bills and it was way less than what I am paying and she used the regular hot water tank (not tankless). I threw out the old tank which uses a lot less BTU's than the tankless. I think the tankless uses 180k BTU's and I had a 40 gallon tank. I don't know what to do. And my plumber also checked for gas leaks and I don't have any.

We have a jacuzzi that seems to empty our hot water heater before it's full enough. I'm thinking about the "on demand" type of water heater since it's at a cabin that we only use a few days a week. I think that would save energy but I'm afraid the water might take forever to fill a large tub like a jacuzzi has. Also, how much room does an "on demand" water heater take up compared to the normal kind?

We have an Aquastar on-demand water heater with an overflow pipe. It seems to be overflowing a lot onto our garage floor.

Why does it overflow and do you have any comments/suggestions/recommendations, etc? Thank you.

thinking of hooking up a 2.5 galion or a five galion ariston on demand tankless water heater to it ,need to know what size to get..
thanks

I'm thinking of switching to a tankless water heater to do away with my oil burner. I am wondering if I can use a seperate tankless to heat my house.

My plumber recommended replacing my 50 gal hot water heater with a wall-mounted instant hot water heater that does not require a tank.
I was wondering if this is recommended, are homeowners generally happy with this product?

anyone have any information on this?