it should, you can go to their website (https://www.ecobee.com) and do a lookup to see if your specific situation is covered. The device comes with an adapter that handles even the most basic of situations. If you download their app to your phone, it will do a walk through for setup and then you can verify if your situation will work. If you can't find the answer you are looking for at their website you can send them a screen shot of what you have and they will send back a reply with exactly what wire should go where on the system. I have a fairly middle complex system and I did that before I bought the device to make sure that it would work before I bought mine. During setup after it is installed it will tell you that it detected 3 wires, and ask you questions about your furnace and then on it goes.