Aqua-Hot will be doing inventory July 1st and 2nd and we will also be closed July 4th and 5th in observances of Independence Day. During this time, we will not be shipping any online orders until July 8th. Thank you!
 400D Aqua-Hot motorhome heater

How To Buy
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Aqua-Hot Low EmissionsAqua-Hot Made In USA


Aqua-Hot’s 400-series are the Most Compact System for Diesel Motorhomes


  • -  Continuous on-demand hot water
  • -  Quiet, clean, even, moist interior heat
  • -  Adds thousands of dollars to the value of an RV
  • -  Two sources of energy for heating comfort
    • -  Uses AC shore power for light duty heating and hot water use
    • -  Uses diesel fuel for heating in colder temperatures and continuous hot water


  • -  Maximum Interior Heat Exchanger BTUs 65,600
  • -  Continuous, Tank-less Hot Water 1.25 GPM
  • -  Engine Preheating No
  • -  Electric Elements 1-120VAC, 1650W
  • -  Fuel Diesel
  • -  Max Fuel Usage .41 GPH
  • -  AVG Fuel Usage /Day Dry Camping 1-4 Gallons
  • -  AVG Fuel Usage/Day Shore Power 1-2 Gallons