A:AnswerYes, you need an Internet connection, so you can communicate with your Nest through the Internet on your phone, iPad, or computer from anywhere.
It is easy to install and program if you have all the necessary wires on your old system. However, some older systems may not have the number of required wires. The missing wire can be added, but will take an electrician to do it.
A:AnswerThere is a barcode on the box that allows you to see if the unit works with this hardware. I even received an email confirmation with a personal wiring guide.
A:AnswerIt does work with zoned systems, they do not say what the Max is, but an example shows 3 zones. Below is some info from the website that is helpful:
The Nest Learning Thermostat is compatible with zoned systems, including zoned systems with dampers. However, there are some zoned systems that require a common wire to work with the Nest Thermostat.
A:AnswerWe have the same issue. There is a vent blowing cool air in our room but not an intake. Because of that there is no air circulation that causes this. No thermostat will fix that issue. You have to keep your room door open otherwise consider buying a window or floor standing unit.
A:AnswerIt's very simple to replace just look at the letter and color of wire as you disconnect the old thermostat and put it in the same place on the new one
A:AnswerYes me too. I bought two units. Named them Upstairs and downstairs. They adjust temperatures for their zones and work well. I can adjust them remotely and individually.
A:AnswerI'm far from an expert but I don't see why you can't just wrap the control wires together. The only problem would be is that you would not have independent control over the 2 systems. They can either both be on, or both be off.
A:AnswerThe Nest will work with a 2 stage system.
Depending on how high or low on the wall you have your Nest set, the dog may trigger the system to think that you are home and switch from Away. I have 2 dogs and the Nest is set at standard height. They do not set off the sensor.