HouseVanguard.com
Compact tankless water heater of the future at affordable price
Solar Direct
Sells solar energy equipment including water and pool heating, solar cooking and electricity, plus energy and water saving devices.
SuperHVAC.com
Radiant heating products, boilers, furnaces, water heaters, insulation and indoor air quality. Lines include Kitec pipe, Bock, NTI, Nu-Air.
The Chilipepper Appliance
Speeds hot water from water heaters to fixtures without running water down the drain.
WaterHeatersMall
Sells tankless gas and electric water heaters of several brands: Paloma, Bluewave, Stiebel Eltron, Seisco, Envirotech and Termotronic.