The world ’s most popular thermostat has taken a turn for the future — with mercury--free models. Built on the proven performance and reliability of Honeywell tradition, The Round ® Mercury-Free Thermostat features a precision electronic switch that completely eliminates the need for mercury. The display features an enlarged scale that makes it easier than ever to set the temperature exactly where you want it. And since The Round offers precise temperature accuracy, you ’ll know that what you set is what you ’ll get. From its classic design to its ease of use, The Round Mercury-Free Thermostat is a true source of comfort. 

The Round® Mercury-Free Thermostat
IMPROVED DESIGN MAKES IT BETTER THAN EVER.

• Electronic Switch Replaces mercury for environmentally friendly performance.
• Proven Performance Accuracy and reliability has made Honeywell the number one thermostat choice of homeowners.
• Classic Design The Round is the world's most popular thermostat.
• Easy To See The enlarged scale and raised designations make setting the temperature easier than ever.
• Precision Accuracy Reliable temperature control eliminates temperature swings.
• 5-Year Warranty

Color Brochure          Digital Round