RV Hydronic Heater Repair



This model of Aqua-Hot uses the special Camco -100 Boiler coolant.




This model may also be known as:



Changes From Previous Model


This model is first model in this series to be "Low Emissions"

The combustion chamber has a major redesign of the AHE-450-DE2 model


Changes made on this model:


  • Combustion chamber has been redesigned. 
  • Combustion chamber now looks like this:
You need to replace gasket if you remove combustion chamber, here HDE-700-205

Part Notes



Information on tank level sensors    Tank Level Sensor Information


Routine service parts and kits - Routine Service Parts      Scroll down page for filter and nozzle packages.



Common Problems


  • None

Service Manual


On Aqua-Hot website   AHE-450  Use Service Manual for AHE-450-DE4