I installed one of the Filtrete thermostats in our warehouse. In this application, it's only regulating heat. I think it's a good product, but even I thought the wifi setup process was outrageously complex.

But, once it's online, you can adjust and program the thing from your web browser or iDevice. The website is simple to use and being able to program the thermostat online is fantastic.

Your web browser doesn't access the thermostat directly, so you don't have to open any ports on your router or anything like that. It seems that the thermostat polls the Filtrete service every few minutes. If you change the temperature online, it's not going to happen instantly on the thermostat. I would say it has a 5-10 minute response time.