Hot water heater

O

omc cobra guy

Cadet
Joined
May 14, 2012
Messages
25
Its time for a new hot water heater Im thinking about a on-demand water heater has anyone done it? Hows it working out?
 
Last edited:
roscoe

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,895
I don’t have on demand, I have tankless.
So far so good, but only had it for 18 months.
 
roscoe

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,895
On demand heats the water at the point of use .
So a heater, usually electric for convenience sake, in every room with a faucet.

Tankless, simply replaces your current water heater with a super fast ( high btu ) heater.
Mine is gas, 174,000 btu. Btu size has to be high enough for the number of faucets being used at one time, AND …. For the desired temperature rise needed. I’m in the north, so water enters my basement at 45*F, year round. It pumps out 135* water all day, but I have it set at 123*.

The water still has to flow from the heater through the pipes to the faucets , so you still have to wait for the hot water to get there.

It works for us, it will keep up when we are using 2 showers, and the dishwasher.

Another option I did not go with, is to add recirculating pumps, and return pipes. That would give us instant hot water. But then you are running the pumps and continuously heating the water in the pipes.
 
K

KD4UPL

Senior Chief Petty Officer
Joined
Feb 13, 2010
Messages
710
Are you asking about electric or gas? If gas it's probably a good idea unless your water has a lot of mineral content. If electric you will likely need at least a 400 amp service to your house and still might need a transformer upgrade from the power company.
 
Scott Danforth

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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52,356
Electric tankless water heaters have 3+ high current elements in a manifold, hence the need for a much larger electrical service
 
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