Battery in our Nest Learning Thermostat stopped working about 8 months after the warranty ended. So no offer to replace it even though thermostats should last longer than 2 years! They said I could buy a c-wire, so I'll do that but it isn't free. Just really lame all around. I also thought when I initially bought it that I would be eligible for a rebate but I didn't read the fine print. Disappointed overall with this product.
