Technical guides
How ventilation actually works
Manufacturer specifications, honest limitations and answers to the questions we get asked most — every figure cited back to its source.
Silent rangehoods
A conventional rangehood puts the motor directly above your cooktop. Schweigen moves it outside — onto the roof or an external wall — so the extraction happens at full rate while the noise s…
Read the guide · 12 FAQs Roof ventilation guide · Solar WhizResidential solar ventilation
An unventilated roof cavity stores heat all afternoon and radiates it down through your ceiling well after sunset. A solar roof ventilator runs off its own PV panel to pull that air out — no…
Read the guide · 17 FAQs Commercial guide · Solar WhizCommercial solar ventilation
Large roof areas trap enormous volumes of hot air, and mains-powered extraction runs hardest exactly when electricity costs most. Solar-driven units scale to 10,000 m³/h and draw nothing fro…
Read the guide · 12 FAQs Moisture guide · Solar Whiz & SolarVentiSubfloor ventilation
Damp under a suspended floor doesn't stay under the floor. It moves up through floorboards as vapour, carries the musty smell with it, and feeds mould in rooms that look perfectly dry. Cross…
Read the guide · 15 FAQs