In store only. Customer upon recycling of a smart thermostat will receive a 15% off recycle coupon toward the purchase of Google Nest Learning Thermostat or Temperature Sensor SKUs: 6587626, 6587627, 6587695, 6221359, 6589716, 6589706. Only 1 coupon per purchase and can only be used once. Limit one coupon per household, per offer. Recycled thermostats will not be returned under any circumstances. Not available in all locations and some stores may have additional limitations.