As of February 2015, the cost of a Honeywell thermostat ranges from $150 to $350. However, the exact cost of a Honeywell thermostat depends on its design, model, features, and condition. For example, the new Wi-Fi smart Honeywell thermostat with voice control costs $349, according to CNET.
On HomeDepot.com, the Wi-Fi programmable touch screen Honeywell thermostat costs $149 and comes with a free application for smartphones, as of February 2015. To find the best deals on Honeywell thermostats, compare prices online on websites such as Prothermostats.com and Amazon.com. HoneywellStore.com is yet another useful website to browse different types of Honeywell thermostats and their unique features, prices and special offers, among other purchase information you need.