{"product_id":"zehnder-evo-3-compact-heat-recovery-unit-471100161","title":"Zehnder EVO 3 Compact Heat Recovery Unit - 471100161","description":"\u003cul\u003e\n\u003cli\u003eClass-leading 91% heat recovery and 0.5 W\/l\/s Specific Fan Power\u003c\/li\u003e\n\u003cli\u003eUltra-compact 269 mm depth — fits a standard suspended ceiling void\u003c\/li\u003e\n\u003cli\u003e100% full and filtered automatic summer bypass\u003c\/li\u003e\n\u003cli\u003eWall or ceiling mountable, left or right hand\u003c\/li\u003e\n\u003cli\u003eRotatable spigots for flexible duct routing\u003c\/li\u003e\n\u003cli\u003eTool-free filter access\u003c\/li\u003e\n\u003cli\u003eWireless RF control as standard, ModBus\/KNX BMS options\u003c\/li\u003e\n\u003cli\u003ePassive House certified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Zehnder EVO 3 is the efficiency sweet spot of the EVO range — same compact 269 mm casing as the EVO 4 but with optimised motors and aerodynamics that deliver up to 91% heat recovery at just 0.5 W\/l\/s SFP. For 2–3 bed apartments and small houses that don't need the EVO 4's 322 m³\/h headroom, the EVO 3 is the lower-running-cost choice.\u003c\/p\u003e\n\u003cp\u003eEC 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 at 38.6 dB(A) on full boost it's the quietest unit in the EVO family. The integrated condensate fall lets you ceiling-mount without packing or shims.\u003c\/p\u003e\n\u003cp\u003eFour 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.\u003c\/p\u003e\n\u003ch3\u003eSuitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2–3 bed apartments\u003c\/li\u003e\n\u003cli\u003eSmall houses\u003c\/li\u003e\n\u003cli\u003eNew builds\u003c\/li\u003e\n\u003cli\u003eRetrofit projects where heat recovery efficiency and running cost matter more than maximum flow rate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWall 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.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZehnder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir flow range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e116–231 m³\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeat recovery efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e91% max (SAP 2009) \/ 90% (SAP 2012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecific Fan Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 W\/l\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSEC class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (L × W × H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1160 × 600 × 269 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDuct connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e160 mm internal, rotatable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISO Coarse G4 (ISO ePM1 F7 upgrade available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e230 V \/ single-phase \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax power (with \/ without pre-heater)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1168 W \/ 168 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSound at full speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e38.6 dB(A) @ 3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIP rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePassive House certified, BS EN 13141-7:2010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Year Manufacturers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eManuals \u0026amp; guides\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/English_Zehnder_CSY_EVO_3_A3_DAS_UK-en.pdf?v=1778701625\" target=\"_blank\" title=\"Zehnder EVO 3 Product Data Sheet\" rel=\"noopener\"\u003eZehnder EVO 3 Product Data Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Zehnder","offers":[{"title":"Default Title","offer_id":56249252381051,"sku":null,"price":2031.14,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0355\/3932\/0965\/files\/zehnder-evo-mvhr-front.jpg?v=1778684827","url":"https:\/\/www.efans.co.uk\/products\/zehnder-evo-3-compact-heat-recovery-unit-471100161","provider":"eFans Direct Ltd","version":"1.0","type":"link"}