Turn to Grainger for HVAC building automation products including controls and room temperature sensors to help you simplify networked zone control for common HVAC equipment such as packaged rooftop units, air handlers, fan coil units, and heat pumps. Building automation control accessories include various temperature sensor options for BAC-1 controllers. You can reduce energy costs and conserve resources with economizing control accessories including enthalpy sensors, universal resistor kits, temperature sensors, hot water temperature sensors, and more. Install an energy-efficient and economizing control to help reduce energy consumption and save money on heating and cooling costs. These controls improve fuel use in existing systems by modifying the On/Off control action.