Waste Water Heat Recovery for Showers

Recoup Drain+ Duo

The Recoup Drain+ Duo is the lower efficiency version of the Drain+ Duo HE that requires a shallower installation depth. A slimline wet-room drain horizontal Waste Water Heat Recovery system for Showers (WWHRS) providing efficiency of up to 52%. Comprising a double-walled heat exchanger with no moving parts, no exchanger maintenance or end-user interaction.

Ideal for residential self-build and renovation projects, leisure clubs, gyms, nursing homes, holiday parks, hotels, student accommodation, ground floor or any walk-in shower installations. This WWHRS is available with either the contemporary brushed stainless steel ‘Quadratto’ cover plate, or the minimalistic ‘in-line’ tile cover plate.

Features and benefits

  • Horizontal WWHRS – integrated shower drain for wet-rooms
  • Patented, double-walled heat exchanger
  • KIWA validated efficiencies of up to 42%, dependant on flow rate
  • In-line tile or Quadratto cover plate options
  • Built-in shower trap
  • Legionella control risk assessed
  • Option of 3 system installation variations
  • High quality manufacture
  • Virtually maintenance free
  • SAP listed

Product application

Bungalows or ground floor, Apartments, Commercial properties Product Application

Product diagram

Recoup WWHRS Drain+ Duo Diagram

Drain+ Duo Data & Specification

Specification details

Technical Data - General Information


Performance & efficiency

Technical Data - Performance & Efficiency


Pressure drop on mains water circuit

Technical Data - Pressure Drop on Mains Water Circuit

Drain+ Duo Technical information and downloads

Recoup Drain+ Duo Technical SpecificationRecoup Drain+ Duo Technical Specification

Technical Specification document for the Recoup Drain+ Duo.

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Recoup Drain+ Duo & In-line tile cover plate (+80mm Syphon) drawingRecoup Drain+ Duo & In-line tile cover plate (+80mm Syphon) drawing

Drain+ Duo & In-line tile cover plate (+80mm Syphon) drawing document.

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Recoup Drain+ Duo & Quadratto cover plate (+80mm Syphon) DrawingRecoup Drain+ Duo & Quadratto cover plate (+80mm Syphon) Drawing

Drain+ Duo & Quadratto cover plate (+80mm Syphon) drawing document.

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Recoup Drain+ Duo installation and dataRecoup Drain+ Duo installation and data

Guide to the installation, product details, performance and operation of the Recoup Drain+ Duo product.

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Recoup Drain+ Duo BIM ModelRecoup Drain+ Duo BIM Model

The Drain+ Duo Building Information Model (BIM) is available for download here and on Bimstore with our other products.

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Recoup WWHRS BrochureRecoup WWHRS brochure

Recoup's Waste Water Heat Recovery System (WWHRS) Brochure and Portfolio to download, save, print or share. Provides background information on WWHRS and why to use it, SAP assessment, SBEM, BREEAM, Passive House, all product options, features, benefits, installation methods and links to additional useful information. Download here...

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