Heating, Ventilation, Air Conditioning and Refrigeration Pressure and temperature measurement in cooling and heating systems is vital to control the performance of the system. Indirect level measurement in closed systems, temperature control in enclosed spaces, evaporation pressure and condensation are some of the most common applications for which WISTOM offers a solution. The HVAC market is in constant evolution, the individual search for better quality of life influences the demand of innovative, sustainable, environmentally friendly solutions. WISTOM´s wide range of temperature and pressure instruments is designed to guarantee best performance and comfort to large scale residential, commercial and industrial buildings.