Tesla HVAC: The Gamechanger No One Expects

Elon Musk continues to hint about scaling up Tesla's HVAC technology into homes. I think this could be Tesla's next big unannounced product line. Between 40-50% of household energy consumption comes from heating and cooling. Tesla has the opportunity to install more energy efficient systems, combined with smart heating/cooling, and air filtration to hyperchange this industry. I think Tesla is working on an HVAC product, and maybe a full smarthome offering (where they build a house with a solar roof, powerwall, starlink and HVAC) ... What are your thoughts about this moonshot? Do you think Elon will put these Tesla HVAC ambitions into motion?