March '17

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72 • RV PRO • March 2017 rv-pro.com A F T E R M A R K E T and released in Europe more than two decades ago. The current design evolved about 10 years ago. There are differences between a Combi and a hydronic system, how- ever. Howlett says the Combi is more closely related to a tank water heater with a small amount of water storage than an on-demand one, in part because the technology is meant to be a furnace first and a water heater second. And, its European origin makes it more suitable for smaller units. "The main feature is on the heating side, where you have near-silent oper- ation of the furnace," Howlett says. "There's a small tank of water there, enough that you can take a 'navy shower.' The Combi is focused on small, compact motorized vehicles where you don't want to listen to a loud fan blowing all night." Weighing the Pluses & Minuses The expression 'navy shower' often enters the discussion about RV water heaters – and not in a positive way. It comes from the practice aboard Truma is a relatively new entrant to the RV market in North America, but has been a supplier to the European RV market for several decades. Pictured above is the company's large manufacturing facility. Girard debuted its first tankless water heater in 2009. The company touts that its product remains the No. 1-selling tankless water heater in the RV industry, with more RV manufacturers using its products than all other competitors combined.

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