• Stacked or horizontal packaged heat recovery twin fan units with a choice of LPHW, electric, DX or no heater options.

    Features & Benefits:

    • Guaranteed ventilation – Ecosmart units with auto-change over and duty share
    • High efficiency – heat exchanger efficiency of up to 70%, alongside high efficiency motors and backward curved impellers.
    • Quiet solution – double skinned helps keep breakout noise to lowest possible levels
    • Integrated summer bypass – operates automatically via integrated factory set temperature sensors.
    • Quick commissioning – integrated supply and extract fan allows precise system duty to be quickly and accurately set.
    • Guaranteed low cost ventilation & heating – optional full re-circulation on start up ensures that the room is quickly and efficiently heated.
    • Wide range of ancillaries – weatherproof roof, condensate pumps, filter options and silencers
    • Wide choice - up to 10 duty sizes and configurations
    • 5 year warranty – on Ecosmart models for peace of mind. No control models have a 2 year warranty.


  • The XBOXER Heat Exchanger Twin Fan unit shall be manufactured from Aluzinc corrosion resistant steel, with 25mm double skinned infill panels and extruded aluminium frame, giving extremely low noise levels. The unit shall include the following items: - a cross flow heat exchanger block with automatic summer bypass, complete with a condensate drip tray and 22mm drain connection. (Alternatively a condensate pump shall be provided if specified.)

    Supply and extract filters (G4 grade pleated filters) Integral infinitely variable speed controls with minimum and maximum adjustment for accurate commissioning, run on timer and facia mounted failure indication, and interface connections for Ecosmart sensors/enablers, dampers and BMS.

    The unit shall be constructed with removable panels allowing full maintenance access from the side. The Twin fan unit has left or right hand arrangement in direction of supply air flow. A LPHW heater battery is fitted, pre-piped with a 3 or 4 port valve and actuator assembly. BMS interfaces, fan control and heater battery commissioning control are supplied as part of the Ecosmart control strategy. Heater batteries will require a separate enable signal from either a variable 0-10V BMS signal or the use of a Nuaire ES-LCD control.



    • Hospitals
    • Toilets
    • Leisure & Sports Facilities
    • Public Buildings


    • Weather proof roof (**WP)
    • Bottom access (**BA)
    • Constant Pressure Dampers (CVD*)
    • CO2 sensors (duct and surface mounted)


  • I&M XBOXER (XB2-5) Supply & Extract Fan with Heat RecoveryDownloadXBOXER Twinfan Consultants SpecificationDownload