The Hunter Mechanical Heat And Cool Thermostat combines accurate, reliable electronic switching with mechanical ease of use. It is compatible with air conditioning, gas, electric and oil furnaces, gas and oil-fired boilers, 2-wire hot water, radiator heat and most 24V and millivolt systems. This unit is NOT for use with 110 or 220V electric baseboard heat, heat pumps, multi-stage systems or 3-wire hot water systems.

• Easy installation in 30 minutes or less
• Electronic switching eliminates the mercury used in most mechanical thermostats
• No leveling required
• Environmentally friendly, mercury-free
• Includes decorative wall plate
• Weight: Approximately .75 pounds
• Shipping Dimensions: Approximately 9.9 x 8 x 1.75 inches.