Thatcher Brook Primary School is a recently renovated 68,000 square feet school in Waterbury, VT. This classic 3-story brick school consists of three distinct wings with connectors between them. Mechanical systems were completely replaced. The hydronic heating system has three Buderus oil fired boilers with lead-lag control. Classrooms are located by Runtal steel panel radiators. Ventilation is by three energy recovery units located in the attics of the three buildings. Existing ventilation shafts were retro fitted with new supply and exhaust ducts. The building is controlled by a state-of-the-art DDC control system with web browser interface.