From Landfills to Eco-Consciousness: Driving Sustainability with Reusable Filter Frames with Mark Dodd, Head of IoT at Woosh

What this episode covers

Mark Dodd, Head of IoT at Woosh, explains how his company retrofits existing HVAC systems with a reusable smart filter frame to monitor air quality and reduce landfill waste. The device uses a differential pressure sensor and proprietary cloud algorithms to notify users when to replace the foldable filter, solving the guesswork of traditional maintenance. Dodd details the engineering challenges, including a critical failure where initial flow-through sensors clogged with dust, which was resolved by designing a specialized, dust-resistant sampling geometry. The company, headquartered in South San Francisco, partners with 3M for filter media and is exploring adjacent markets like laundromats and short-term rentals.