Why don't TC makers use the Truma Combi units?

Sign me up ... Northern Lite, would be great if you added this to the 10-2!

Makes no sense for me to heat up 6 gallons of water for a 2 gallon shower. Also, the space savings mentioned above, the electricity savings, the QUIET when using the heater. Then knock off $250 from the overall cost since you don't need a wave 6 catalytic heater anymore!

When people talk about TC innovation, well here's an idea whose time has come.

Dave