Can the Recoup Pipe HEX be installed horizontally?

Pipe HEX installation orientation explained

No, any vertical pipe-style WWHRS system, such as the Pipe HEX should be installed vertically. Installing horizontally would not allow the ‘falling film’ heat exchange that is required to maintain the tested efficiencies, and therefore energy savings. The Pipe HEX should always be installed with the Turbo rotator fitted at the top, the pipe itself is symmetrical so either end can be the top or bottom.

See here for further installation details.

 

Recoup does offer WWHRS systems that are designed to be installed horizontally, such as the Easyfit+ and Drain Systems.