Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted - Amazon.com
Amazon.com: Whale S360EW 12V Water Heater, 3 Gallon Capacity, Quick and Efficient Water Heating, Maintains Hot Water up to 10 Hours, Runs on 12V DC Power, Ideal for Use with Deck Showers, :
Whale Marine S360EW 12V 300W 3 Gallon Electric Water Heater (S360EW)
Ruud™ 120 Gallon 3-Year Commercial Electric Tank Water Heater (30kW) at Menards®
Polaris PGC3-50-175-3NV High Efficiency Natural Gas Commercial Water Heater, 50 Gal 175,000 BTU - Commercial Water Heater Sales - ePlumbing Products Inc