Passively Recovering Waste Heat Energy With Every Shower

Recoup Retrofit+

The Recoup Retrofit+ is now a discontinued waste water heat recovery system (WWHRS). It was the first Recoup product designed for retro-fitting into domestic and commercial properties. It has now been superseded by the Recoup Easyfit+ WWHRS which is able to provide over double the efficiency achieved by the Retrofit+.

Like the Retrofit+ the Easyfit+ can be installed under baths with showers or shower trays. A perfect solution for landlords, housing associations, hotels or home owners wishing to save costs on their hot water usage.  Visit the Recoup Easyfit+ product page for more information on this higher performance  product.

Features and benefits

Discontinued product – See Recoup Easyfit+

  • Compact system for ease of positioning
  • KIWA validated efficiencies of up to 22%
  • WRAS approved
  • Legionella control risk assessed
  • Extremely affordable
  • Easy to install – no major renovation or pipework required
  • Option of 3 system installation variations
  • Helps gain Silver Standard in Scotland
  • Proven success through the GDHIF!
  • Virtually maintenance free
  • SAP listed

Product application

House, Bungalow or ground floor, and Apartment Product Application

Product diagram

Recoup Retrofit+ Diagram

Data & Specification

Specification details

Description Value Unit
Overall height for installation 2400 mm
Outside diameter of external tube 63 mm
Material – Internal tube Copper
Material – Internal tube PVC
Shower flow rate 5 – 12.5 litres/min
Max. Mains water inlet pressure 10 bar
Min. Mains water inlet pressure 1 bar
Max. Waste water working temp 85 °C
Mains water connection ½” male BSP
Waste water connection 50 mm
Weight 7.9 kg
Water volume – mains water 0.3 litres


Performance & efficiency

Shower Flow Rate @ 40°C ( litres/min )

ReTROFIT+ efficiency ( Recovered energy kWh )

System A System B System C
9.0 19.9% (3.75) 17.1% (3.22) 19.1% (3.60)
9.2 19.7% (3.79) – – – – –
11.0 18.4% (4.23) 16.2% (3.72) 17.6% (4.05)
12.5 17.7% (4.63) – – – – – –


Pressure drop on mains water circuit

Shower Flow Rate @ 40°C (litres/min)

ReTROFIT+ Pressure drop ( bar )

System A System B System C
5.5 0.14 <0.08
7.5 0.20 <0.12
9.2 0.24 <0.14
12.5 0.36 <0.21

Technical information and downloads

Recoup Retrofit+ DrawingRecoup Retrofit+ Drawing

Recoup Retrofit+ Drawing document.

Download Here…

Recoup Retrofit+ installation and dataRecoup Retrofit+ installation and data

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

Download Here…

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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