06:11AM | 03/03/04
Member Since: 02/29/04
14 lifetime posts
This is amazing site with answer times. Looking to do addition. Several contractors have mentioned tankless as option. My concern is incoming water temp. The units I've researched ouput capacity assume 55 degree water as imput. Water is much colder in winter. Are there units that output is unaffected by incoming temp? Am I better off with traditional water tank. (3 bathrooms, 4 daughters, 1 wife)

erik peterson

02:50PM | 03/03/04
Member Since: 06/23/03
223 lifetime posts
Go back through the threads...maybe a few pages you will find "tankless" addressed. erik

plumber Tom

04:35PM | 03/03/04
Member Since: 05/10/03
801 lifetime posts
You should be more concerned with the inlet size pipe rather then the temperature. Read the specs on GPM's. You may need a 3/4" inlet with all the fixtures you are supplying.


04:41PM | 03/03/04
Member Since: 09/16/02
250 lifetime posts
What about using more than one tankless water heater for the house. Locate a large one by the bathrooms and a smaller one by the kitchen/laundry area. If you go this route, don't go too small or you'll hate yourself later.

Good luck,




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