Building turns off air-conditioning for World Environment Day

The air conditioning in Building's offices have been turned off to mark World Environment Day. The move is expected to save around £30, which will be used to buy low-energy lamps for a nearby school.

Ludgate House is built with glass curtain walling and has few openable windows. Building.co.uk will be measuring the temperature throughout the day to determine the performanced of the building in its 'natural state'.

World Enviroment day has coincided with cool and cloudy weather in London and office workers are not expected to experience excessive discomfort.

By 10am the temperature had risen to 22.5 degrees from 20 degrees at 8am.

Thomas Lane, Building's technical editor, said: "At the moment it’s OK as its still early and cool outside. But this building doesn’t have any opening windows and when the aircon has broken down previously it’s got very hot in here."

The worry is we are going to start cooking like chickens in an oven if the sun comes out

Thomas Lane

"The worry is we are going to start cooking like chickens in an oven if the sun comes out."

Building journalists will also be recording their carbon footprints throughout the day. They will be measuring their energy use according to a CO² scoresheet (attached below). The aim is to cut 1kg of CO2 from individuals' footprints.

Let us know how you are marking World Environment Day and we will add your thoughts to our running commentary.