Factor4 specializes in energy efficiency and comfort in offices and industrial buildings. We make your building more valuable: both energy efficient and comfortable. We offer performance based Plus+® projects, in which we guarantee the profitability of the energy efficiency measures and an optimal comfort performance. In practice, we - measure and assess your current energy consumption - monitor the comfort satisfaction using our online Comfortmeter® survey tool - perform “re-commissioning” of your existing installations and optimise their operation - install new equipment only when needed and deemed profitable - measure the energy and comfort performance again and show you the results