Out of curiosity, I wonder why TC makers don't use the Truma Combi unit which has been out for a few years in the US and been out for much longer across the pond. For what it does, it is perfect for a TC, because it supports electric and propane, as well as does either water heating, 20,000 BTU furnace, or both at the same time. The space savings by only needing one appliance is quite useful, and because the exhaust and intake are easily positioned, there is a lot of freedom of where to locate the furnace unit.The Truma units also use less amperage for furnace fans as well.

Winnebago Article on TrumaI don't own a TC but, I'm guessing, it is not offered because there is no demand or requests for the unit.I don't know the cost of a Truma, it's probably more than what is currently used in RV's.That would be a big factor.

They are cost-prohibitive for a TC. I don't think a regular TCer is going to pay $2300 for the combi unit plus installation.Truma ComboAnd parts and service availability?Edit:There is no dealer for the Truma Combo units in the US who will sell to an end user. All they sell is the instant hot water heater and the ultrasonic propane gauge.

I love the idea, and if it replaces the water heater AND the furnace the cost might just be about the same.

You can make one yourself using your existing water heater some piping and some routing of the pipes so works by convection. For instance, running the hotwater heater piping around the floor of the camper. Now that would take some kind of baseboard to hide and protect the piping but you could figure another way. under the floor for example.

I like it. Especially on a TC where space is such a premium. At some point I am going to replace the tank water heater with a propane powered tankless system. The furnace as well with a wave type heater. The amount of space and energy the stock systems require is not conducive to boondocking. Plus all the added storage space!

Why don't TC makers use the Truma Combi units? | Good Sam Community

25 Replies

work2much
Explorer
Dec 30, 2016
I like it. Especially on a TC where space is such a premium. At some point I am going to replace the tank water heater with a propane powered tankless system. The furnace as well with a wave type heater. The amount of space and energy the stock systems require is not conducive to boondocking. Plus all the added storage space!
covered_wagon
Explorer
Dec 30, 2016
You can make one yourself using your existing water heater some piping and some routing of the pipes so works by convection. For instance, running the hotwater heater piping around the floor of the camper. Now that would take some kind of baseboard to hide and protect the piping but you could figure another way. under the floor for example.
gitpicker2009
Explorer
Dec 30, 2016
I love the idea, and if it replaces the water heater AND the furnace the cost might just be about the same.
Geewizard
Explorer
Dec 30, 2016
They are cost-prohibitive for a TC. I don't think a regular TCer is going to pay $2300 for the combi unit plus installation.

Truma Combo

And parts and service availability?

Edit:

There is no dealer for the Truma Combo units in the US who will sell to an end user. All they sell is the instant hot water heater and the ultrasonic propane gauge.
gbopp
Explorer
Dec 30, 2016
Winnebago Article on Truma

I don't own a TC but, I'm guessing, it is not offered because there is no demand or requests for the unit.

I don't know the cost of a Truma, it's probably more than what is currently used in RV's.

That would be a big factor.

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Why don't TC makers use the Truma Combi units?

25 Replies

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