{"product_id":"merlin-eco-extract-fan-dmev-100-mm-4","title":"Merlin Eco Extract Fan dMEV – 100 mm (4″)","description":"\u003ch3\u003eSilent Energy‑Saving dMEV Axial Fan with Humidity Boost\u003c\/h3\u003e\n\u003cp\u003eThe Merlin Eco Extract Fan is a low-energy, near-silent 100 mm decentralised Mechanical Extract Ventilation (dMEV) fan designed for wall, ceiling, or window installations in bathrooms and kitchens. Featuring a durable ball-bearing DC motor, it provides continuous trickle (6–9 L\/s) airflow and boosts automatically to 15 L\/s when humidity rises. Certified SAP Q‑eligible with specific fan power as low as 0.18 W\/L\/s, it operates as quietly as 10.8 dB(A) on trickle mode and is available in standard 230 V or SELV\/IPX7 variants suitable for Zones 1 and 2.\u003c\/p\u003e\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear‑silent operation:\u003c\/strong\u003e Down to 10.8 dB(A) on trickle, under 20 dB(A) on boost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy‑efficient DC motor:\u003c\/strong\u003e Low consumption, long-lasting ball-bearing design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic humidity boost:\u003c\/strong\u003e Self-boosts when humidity increases; then returns to trickle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost airflow:\u003c\/strong\u003e Up to 15 L\/s, with trickle at 6–9 L\/s.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e SAP Q-enabling specific fan power as low as 0.18 W\/L\/s.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass-leading durability:\u003c\/strong\u003e SELV\/IPX7 version available for bathroom Zones 1 \u0026amp; 2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 100 mm (4″) duct diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Wall, ceiling, or window (window kit required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 230 V or SELV low-voltage option\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor:\u003c\/strong\u003e Ball-bearing DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Levels:\u003c\/strong\u003e 10.8 dB(A) trickle, \u0026lt;20 dB(A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow:\u003c\/strong\u003e 6–9 L\/s trickle, 15 L\/s boost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAP Compliance:\u003c\/strong\u003e Q-eligible; Specific Fan Power ~0.18 W\/L\/s \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e IPX4 (standard) or IPX7 (SELV)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTypical Uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eContinuous humidity control in bathrooms, kitchens, WCs, utility rooms\u003c\/li\u003e\n\u003cli\u003eIdeal for new-build or retrofit social housing to meet SAP \u0026amp; Building Regs\u003c\/li\u003e\n\u003cli\u003eQuiet extraction suited for residential applications with minimal disturbance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DIY Refurb","offers":[{"title":"Default Title","offer_id":62002186944899,"sku":"30806689","price":148.51,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/build4less.co.uk\/products\/merlin-eco-extract-fan-dmev-100-mm-4","provider":"Build4less","version":"1.0","type":"link"}