Simple, Easy-to-Use Thermostat Control Save money, energy and peace of mind. The Pro1 Connect app allows users to operate their thermostat from anywhere. The large characters, setpoint slider, intuitive scheduling, and dynamic fan and system buttons make managing comfort fun and convenient. Who is Pro1? Pro1 products are designed to maximize the comfort and energy efficiency of your heating and cooling system. All of our thermostats and apps are built for ease of use and years of reliable performance. We distribute exclusively through the professional HVAC trade so you can have peace of mind knowing that your thermostat was installed properly by a professional heating and cooling technician.