Tankless in Chicago
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)
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.