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Old 09-08-2008, 09:51 AM   #16
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Tankless water heater vs. electrical water heater?


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Originally Posted by imola ghost View Post
Thanks for the information.

I just looked at my breaker panel and my current 55gallon electric water heater is using 2 - 30 amp breakers.
No, It uses one double pole 30 amp breaker or as someone else said two single pole breakers that should be tied physically together.

For your whole house TWH, I would look at a minimum 6 open spaces. That would be 3 double pole breakers or 6 single pole breakers. Always use double pole breakers on 240 volt loads if possible.

I do not know how big your house is, but the larger TWH's use three double pole breakers, and most likely a service upgrade if you are not at 200 amp.
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Old 09-08-2008, 10:48 AM   #17
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Tankless water heater vs. electrical water heater?


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Originally Posted by J. V. View Post
I do not know how big your house is, but the larger TWH's use three double pole breakers, and most likely a service upgrade if you are not at 200 amp.
I found this to be a problem when shopping for my whole-house electric TWH. The units with 3 heaters required more work than I wanted to do, not to mention the cost of 3 dedicated circuits compared to two (running two new 6 gauge lines was about all I could get through that hole in the 8" thick concrete wall ). I finally found a unit that required two 60 amp double-pole 240V breakers, and it is designed to provide heat for a large house or small lodge--it's the only one I could find that was factory built to accept 3/4" plumbing, everything else seemed to neck down to 1/2".

Check this bad boy out, but be prepared. It alone requires 100 amps when firing up, that's what necessitated an upgrade from 100 amp service to 200 amp service to the house.....long story , very expensive b/c we had to go with underground service.

http://www.titanheater.com/proddetai...prod=Tempra-24

Total cost for 200 amp electrical service upgrade to the house, including labor, parts, etc (AND including totally new, separate 100 amp service to a detached garage): $2,500.00, including cost of Tempra 24 TWH.

Being able to walk into the home after a 16 hour ball-buster of a drive and be in a hot shower within 60 seconds, and knowing I didn't pay the poco to keep a tank of water warm while I'm gone for 2 months at a time: Priceless??? (I must admit, I've questioned that one many times )!!

I actually believe I could have survived quite well with a lower capacity unit, it's just my nature to overbuild and the unit was (and still is) on sale for a very attractive price .

Dugly

Last edited by YerDugliness; 09-08-2008 at 12:06 PM. Reason: add link to Tempra-24 TWH
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Old 09-08-2008, 12:20 PM   #18
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Tankless water heater vs. electrical water heater?


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How does a tankless allow you to use less water?
Thats a good question! It can be achieved by using tankless heaters located in the immediate area of usage.
eg. One for the kitchen area and another near the bedrooms! It would save the waste for the warm water to travel from one end of the house to the other.
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Old 09-08-2008, 02:41 PM   #19
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Tankless water heater vs. electrical water heater?


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Originally Posted by Wildie View Post
Thats a good question! It can be achieved by using tankless heaters located in the immediate area of usage.
eg. One for the kitchen area and another near the bedrooms! It would save the waste for the warm water to travel from one end of the house to the other.
Ok. I'll give you that. I thought you meant that a whole house WH could lower water usage.
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Old 09-08-2008, 02:59 PM   #20
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Tankless water heater vs. electrical water heater?


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Originally Posted by Wildie View Post
Thats a good question! It can be achieved by using tankless heaters located in the immediate area of usage.
eg. One for the kitchen area and another near the bedrooms! It would save the waste for the warm water to travel from one end of the house to the other.
In retrospect, I sometimes wish I had utilized this option--my house has two distinct water usage zones, the bathroom and the kitchen/laundry room. I could have purchased 2 smaller units for the price I paid for the one whole house unit and the electrical requirements would have been lesser, perhaps eliminating (or at least reducing) the need (or magnitude) for the new entry service upgrade.

Dugly
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