they are nice. I like the Zodi products myself. I have their hot shower system which I converted to 12v instead of being factory 6v. I looked for many years for what you have because it would work well for the RTT but with no luck. I ended up settling with a more expensive heating system: Proplex H2000 tent furnace which works very similar of what you have w\the exception the H2000 is thermostatically controlled & more efficient.