We have been using CoolAutomation's CoolMasterNet solution for more than a decade. Without CoolMasterNet, HVAC integration was not efficient and time-consuming. Each HVAC manufacturer has its own protocol, so we had to understand each one and create a separate module for each brand. We also used different adapters. Sometimes they worked, sometimes not. Once we started using CoolMasterNet, everything became easier, simpler, and faster. All we need to do is connect the HVAC to CoolMasterNet, and to the Home Automation controller - and the HVAC is integrated in no time.