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-   -   Tankless Water Heater on 150 amp House? (http://www.diychatroom.com/f7/tankless-water-heater-150-amp-house-51007/)

deeze 08-16-2009 02:51 PM

Tankless Water Heater on 150 amp House?
 
So I'm doing a rush rush rush job at reasearching whether or not to do a tankless or a tanked water heater... (garage flooded this morning).

I'm looking at purchasing a Titan N-180 Tankless water heater which calls for (I guess) two 220 lines for a maximum of 77amps.

specs from titantankless.com: N-180 * 18KW * 220/240volts * 77amp

Is this going to be okay for my house which only has 150amp service? There's a good change I will run hotwater, dryer, AC and possibly stove at same time... maybe.

jerryh3 08-16-2009 04:09 PM

I would not do it. Buy a good tank heater.

Plumber101 08-16-2009 04:12 PM

You might post in electrical section so that a sparky (electrician) can help you better with amp load.

deeze 08-16-2009 04:13 PM

Quote:

Originally Posted by jerryh3 (Post 315223)
I would not do it. Buy a good tank heater.

Why not?

deeze 08-16-2009 04:15 PM

Quote:

Originally Posted by Plumber101 (Post 315226)
You might post in electrical section so that a sparky (electrician) can help you better with amp load.

Excellent idea?
So what's your opinion on tankless vs tanked? :)

jerryh3 08-16-2009 04:20 PM

Quote:

Originally Posted by deeze (Post 315227)
Why not?

I think you pointed out the most obvious reasons. You would be using half your rated service with the water heater. Turn on the dryer, A/C, and stove and you may be looking at a tripped main breaker. Plus, this most likely will require three double pole breakers which could be an expensive install depending on your existing setup.

Plumber101 08-16-2009 04:25 PM

Quote:

Originally Posted by deeze (Post 315229)
Excellent idea?
So what's your opinion on tankless vs tanked? :)

If it were me I would go with a gas fired tankless over electric, otherwise replace the WH.

lonsplumbing 08-16-2009 07:50 PM

hot water tank
 
Replace the tank. You will have less problems in the future and its alot cheeper.

DIY4WIFE 08-17-2009 03:24 PM

Replace the WH and include a Redytemp with the installation which will allow you to have hot water instantly during regular ussage times using the onboard timer and use the push-button on-demand operation during other times. Doing so minimized our hot water waiting no matter what time of day it was.:huh:

deeze 08-17-2009 10:00 PM

Final project
 
Fun DIY project...

I wanted to use the braided flex for both connections but it just didn't work out on the cold side. The bend would have been too hard.

I had to replace the shut-off valve along with the water heater. Pretty bad when the valve failed as well as the tank... it made the interim time a bit of a pain.

http://www.dnscompanies.com/images/carreraday/tank.jpg


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