We install a range of natural ventilation systems for commercial and domestic buildings providing an energy efficient alternative to mechanical fans or heat recovery ventilation systems.

Passivent is BBA certificated and is highly energy efficient, typically providing higher energy ratings than any other form of ventilation. Ventilation is driven by a single low-wattage continuously-running fan, providing extraction for a whole dwelling, for a number of flats, or several rooms in multi-occupancy premises such as nursing homes.

The system comprises of humidity sensitive inlets sited as required, eg in bedrooms and living rooms, with humidity sensitive extracts sited in 'wet' rooms such as kitchens and bathrooms. This means that, although the fan runs continuously, the ventilation rate in each of these rooms is regulated to provide the exact ventilation requirements throughout the dwelling and the fan is the only component requiring a power supply.

The system is specially designed for efficient extraction of low volumes of air along lengthy ducts; conventional ducted fans cannot do this efficiently. Passivent is suitable for both new build and refurbishment applications. Coldcare is a ‘mastercare’ installer and we can offer extended warranties on the unique system.

Recent installations include:

• Culham Nursing Home, Leyton
• Lifestyle Care Nursing Home, Luton
• Lifestyle Care Nursing Home, Putney
• Lifestyle Care Nursing Home, Reading
• Lifestyle Care Nursing Home, Southall

Contract values range from £7,000 to £90,000