How Does an RV Aqua Hot Heating System Work?


Have you recently purchased an RV and learned it has an Aqua Hot heating system and wondered, “What does that mean?” or “How does that work?” 

Well, if you have asked these questions then this is the right article for you. Technically known as a hydronic heating system, it is an option or a standard feature in an increasing number of diesel-powered motorhomes and more recently, propane powered high-end fifth wheels. It’s popular among many coach owners because it provides clean, quiet, evenly distributed heat and unlimited, on-demand hot water. Hydronic heating systems transfer heat by circulating fluid through a closed system of pipes.

Your RV Aqua Hot heating system delivers moist interior heat and continuous hot water and that means no more cold water at the start of your shower and you never run out of hot water! Also, heat is distributed evenly throughout the coach creating a pleasant environment keeping the room temperature consistent.
Heat is stored and created by one or a combination of energy sources to deliver heat where you need it. The heating system gathers heats from multiple sources, such as:

  • Heat from fuel (such as the vehicle’s diesel or propane tank)


  • Heat from electricity (such as AC shore power)


  • Heat from the engine (some systems can use engine heat while you drive)

One critical key point you need to remember is that annual Aqua Hot maintenance is imperative in order to keep this heating system operating efficiently and to avoid very costly repairs. Because it is a specialized system, only use RV technicians who are certified specifically for this work. 

Fortunately for you, Fix My RV has been trained and certified and is an Aqua Hot Factory Authorized Service Center.
To learn more about this topic, visit our website at
Call Fix-My-RV to schedule your annual Aqua Hot maintenance service. 623-875-5015


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