Low energy ventilation refurbishment of offices.

Many existing offices either overheat in the summer or use excessive amounts of energy to maintain acceptable temperatures. The reasons are increasing internal heat gains from office IT equipment, poor efficiency lighting systems, density of staff and original poor building design causing excessive solar gains. The trend is for problem offices to have AC systems replaced - at the end of the life of the existing services - or installed in previously naturally ventilated offices when refurbishment occurs. The retrofitting of natural and low energy ventilation systems in existing UK office buildings during refurbishment can maintain comfortable indoor conditions and result in significant energy and C02 savings compared to the common solution of just installing AC.