Contact a controls company to determine if a Building Management System to control heat, ventilation, lighting etc. is appropriate for your building
A building management system is like having a really good building operator paying attention to temperature, ventillation and other needs at multiple points in your building 24 hours a day.
A programmable thermostat is a very simple Building Management System (BMS). Controls companies carry systems that can centrally control temperature, ventillation, humidity, lighting, security, boiler operation etc. Control can be based on a schedule, occupancy, and/or weather. Depending on the system, you can remotely control your building while off-site. Contact a controls company to see what sort of system may be right for your building needs. Normally, a BMS is appropriate for larger buildings, rather than small ones.