VentHeat, a new Irish company specialising in heating, ventilation and air conditioning systems for passive house and low energy buildings, has launched the Pichler PKOM4 compact heat pump system to the Irish market. The system combines heating, cooling, ventilation and domestic hot water in one passive house certified unit with a footprint of less than 0.75 m2.

Prestige commercial buildings can place a heavy toll on the environment, typically relying in Ireland on carbon intensive grid electricity to power air conditioning systems throughout the warmer parts of the year and inefficient electric lighting – often all year around. Completed in November 2004, software company SAP’s Galway offices offer a rare opportunity to find out how a natural ventilated and low energy lighting building is working in practice, as John Hearne reveals.