Tankless water heaters under fire

Many readers disappointed with units' cost, performance

Recently a reader asked if we thought installing an on-demand, or tankless, water heater was smart. We responded "Yes, in theory."

Conceptually, heating water as it’s needed makes more sense than heating water and storing it in a tank for later use. We ended that column with the statement that the tankless models theoretically are a reasonable alternative, but with a caveat to do your homework.