Zehnder EVO 2 Compact Heat Recovery Unit - 471100149

Ultra-compact 210 mm depth — fits even the shallowest suspended ceiling void 100% full and filtered automatic summer bypass Wall or ceiling mountable, left or right hand Rotatable spigots for flexible duct routing Tool-free filter access Wireless RF control as standard, ModBus/KNX BMS options Passive House certified The Zehnder EVO 2 is a balanced mechanical ventilation unit with heat recovery, sized for studio flats, 1–2 bed apartments and smaller dwellings where every millimetre of ceiling void matters. At just 210 mm deep with the condensate fall built into the casing, it slides into voids that no other MVHR in its class will fit. EC motors hold a constant commissioned flow rate as the filters load, so Part F duty is maintained between filter changes. The summer bypass is fully filtered — pollen and particulates stay out during warm-night purge — and an A+ SEC rating keeps EPC modelling clean. At 19 dB(A) on low speed, it's quiet enough for bedroom-adjacent installs. Four variants available: standard, factory-handed pre-heater (for external temperatures below -10°C), mirror-handed pre-heater, and an enthalpy exchanger version that recovers moisture as well as heat. Suitable for Studio flats 1–2 bed apartments Small new builds Retrofit projects where ceiling-void depth is the limiting factor. Installation Wall or horizontal ceiling mounting. Integrated condensate fall — no shimming required. 160 mm external duct connections, rotatable spigots. Wired by a qualified electrician via the supplied flying lead. Specifications Brand Zehnder Air flow range 85–155 m³/h Heat recovery efficiency 89% max (SAP 2009) / 86% (SAP 2012) Specific Fan Power 0.62 W/l/s SEC class A+ Dimensions (L × W × H) 1000 × 600 × 210 mm Weight 24 kg Duct connection 160 mm external, rotatable Filter grade ISO Coarse G4 (ISO ePM1 F7 upgrade available) Voltage 230 V / single-phase / 50 Hz Max power (with / without pre-heater) 1150 W / 150 W Sound at low speed 19 dB(A) @ 3 m IP rating IP40 Certification Passive House certified, BS EN 13141-7:2010 Warranty 2 Year Manufacturers Manuals & guides Zehnder EVO 2 Product Data Sheet