Zehnder EVO 4 Compact Heat Recovery Unit - 471100163

Ultra-compact 269 mm depth — fits a standard 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 4 is a balanced mechanical ventilation unit with heat recovery, designed for apartments and smaller homes where ceiling-void space is at a premium. At just 269 mm deep with a built-in condensate fall, it slides into a standard suspended ceiling without packing or shims. 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. 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 Apartments flats 1–3 bed new builds Retrofit projects with limited loft or cupboard space. Installation Wall or horizontal ceiling mounting. Integrated condensate fall — no shimming required. 160 mm internal duct connections, rotatable spigots. Wired by a qualified electrician via the supplied flying lead. Specifications Brand Zehnder Air flow range 139–322 m³/h Heat recovery efficiency 89% (SAP 2009) / 87% (SAP 2012) Specific Fan Power 0.71 W/l/s SEC class A+ Dimensions (L × W × H) 1160 × 600 × 269 mm Weight 39 kg Duct connection 160 mm internal, rotatable Filter grade ISO Coarse G4 (ISO ePM1 F7 upgrade available) Voltage 230 V / single-phase / 50 Hz Max power (with / without pre-heater) 1370 W / 370 W IP rating IP40 Certification Passive House certified, BS EN 13141-7:2010 Warranty 2 Year Manufacturers Manuals & guides Zehnder EVO 4 Product Data Sheet