ISQ performs inspections of HVAC systems, cold/heat and ventilation in households, services buildings and industrial units. HVAC Inspections of both comfort and process HVAC systems in buildings and industrial units, checking its compliance with both processes and comfort status. Cold/heat Inspections of cold and/or heat production systems in buildings and industrial units, checking its compliance with both process and comfort status, in particularly on cold storage systems for perishable products, using cold fluid production systems or direct expansion systems, heat pumps, heat transfer fluids generators, boilers. Ventilation Technical inspection of ventilation systems in households and in service buildings or in industrial plants and warehouses to check their correct installation, analysis of operating problems and energy consumption, as well as calculation of air flows, insufflation and/or extraction.