CtrlFlow is a smart thermostat solution that solves the problem of unbalanced heating/cooling distribution in homes due to the ineffective nature of common HVAC units. It provides a streamlined, convenient process, allowing users to maintain different temperatures in different rooms. This proof-of-concept model works by using a valve mechanism to open and close vents. These vents are controlled by a series of microcontrollers which are all intermittently connected to a central hub. The central hub sends status information to the rest of the system wirelessly using LoRa. The hub is also connected to the IoT network through WiFi, to allow user remote control via a mobile app.