I have a heated hangar deep in Yankee land. There is wifi in the hangar but I had an old school (dumb) thermostat. Was in Best Buy and saw one of those fancy new thermostats and bought it. (It was only $160 and the electric company gave me a $100 rebate and the gas company gave me a $50 rebate so they are free if people are interested.) When I went to install it there were only 2 wires from the heater to the thermostat and I needed a common for power. I tried calling the company but their customer support was not from this country and had a bit of language barrier. Long story short after lots of research online I found a simple transformer that plugs in an outlet and creates the 24 vac needed for the common and now I have a nice thermostat that I can control from a free app on my phone. I keep the hangar at 50 and bump it up on the way to have a nice warm cockpit/place to pre-flight. If anyone is interested it's the Ecobee3 lite.