Houses now have very efficient insulation which is great for the environment but not always good for you. A lack of ventilation can create an uncomfortable living space and puts the fabric of the building at risk of excessive condensation. An average family of four can generate 5-15 litres of water vapour a day, and that can easily condense on cooler surfaces in the house.
To overcome this, the Johnson & Starley have designed a range of mechanical ventilation systems with heat recovery. This brings in fresh, pre-warmed air in to the house and removes the moisture-laden stale air.Download our ventilation brochure