As one of its daily deals, Home Depot offers the Honeywell Wi-Fi Programmable Touchscreen Thermostat, model no. RTH8580WF, for $79 with free shipping. That's the lowest total price we could find by $27 and tied with our mention from Black Friday week as the best deal we've seen. It features a 7-day programmable schedule, vacation mode, filter change indicator, and an app compatible with iPhone, iPad, and Android. Deal ends today.