MVHR Systems Get Smarter With Demand-Based Airflow Sensors
8 July 2026
Most MVHR systems installed over the past decade run at one of two or three fixed speeds, set once at commissioning and rarely touched again. A new generation of units is changing that, using room-by-room CO2 and humidity sensors to adjust airflow automatically, in real time.
Most MVHR systems installed over the past decade run at one of two or three fixed speeds, set once at commissioning and rarely touched again. A new generation of units is changing that, using room-by-room CO2 and humidity sensors to adjust airflow automatically, in real time.
What Demand-Based Control Actually Does
Rather than extracting air from the kitchen and bathrooms at a constant rate all day, the system ramps up automatically when it detects rising CO2 in a bedroom overnight or a spike in humidity after a shower, then eases back once levels normalise. The result is fresher air when it's actually needed, and a quieter, more efficient system the rest of the time.
What Demand-Based Control Actually Does
Rather than extracting air from the kitchen and bathrooms at a constant rate all day, the system ramps up automatically when it detects rising CO2 in a bedroom overnight or a spike in humidity after a shower, then eases back once levels normalise. The result is fresher air when it's actually needed, and a quieter, more efficient system the rest of the time.
Relevant to Any Airtight Build
Because a well-built low-energy home is deliberately airtight, MVHR isn't optional - it's how the house breathes. Sensor-led control simply makes that constant, essential background job cheaper to run, and is worth asking about for any new build or extension already specifying MVHR as part of its ventilation strategy.
Relevant to Any Airtight Build
Because a well-built low-energy home is deliberately airtight, MVHR isn't optional - it's how the house breathes. Sensor-led control simply makes that constant, essential background job cheaper to run, and is worth asking about for any new build or extension already specifying MVHR as part of its ventilation strategy.
