I have A/C in the Portland area but the upstairs of my house never cools well. I added an ecobee thermostat with the room sensors and that's helped immensely. N

I have A/C in the Portland area but the upstairs of my house never cools well. I added an ecobee thermostat with the room sensors and that's helped immensely. Now my bedroom upstairs can actually cool to 75 even though it might be 67 downstairs where the thermostat is. It hasn't saved me any money, but it has made this summer bearable at least.