This is the first post in a series about how I implemented MQTT controller for a Heat Recovery Ventilator (HRV) in my house, and hooked it up to my home automation system. What is HRV? Our house is quite new, and therefore pretty well sealed. In order to maintain a healthy interior climate and not lose too much energy in a cold Canadian climate, we have a Heat Recovery Ventilator system, which is a system that brings in fresh outdoor air and heats (or cools) it with an interior air it exhaust...
