Posted by Harold Kestenholz - Hydronic Network on November 06, 2001 at 10:13:18:
In Reply to: indirect hott water heater posted by rebecca leong on November 05, 2001 at 19:22:50:
It is energy efficient to turn the unit off while you are gone. You can find out how to do a heat estimate to size your equipment and can do one for free at:
http://www.hydronic.net