EngineerAlly was founded in 2021 by a couple of Professional Engineers and industry veterans to improve residential HVAC systems' sustainability through inexpensive real-time technical advice. We believe that practical, inexpensive changes in equipment operation and maintenance can drive significant energy use reductions and that for the average homeowner, the only barrier to enacting these changes is not having a coach to guide them through the process. Engineers and service contractor advice, the most commonly available coaches, are prohibitively expensive, but technical advances in Internet-of-things provide a cost-effective means for providing technical advice at scale. By applying industrial IoT concepts commonly deployed in commercial HVAC, fleet management, and manufacturing environments to the residential HVAC market, EngineerAlly aims to significantly simplify HVAC system ownership while reducing the energy consumption of HVAC systems – the largest energy consumer in the home – and improving Indoor Air Quality to millions of homeowners.