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The Honeywell RTH6400D is a basic programmable thermostat that can be installed by the home owner.

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The Honeywell RTH6400D is a basic programmable thermostat that can be installed by the home owner. Programming is enabled to set a temperature for weekdays, Saturdays and Sundays. By doing this up to 33% can be saved on annual heating and cooling costs. The backlit display is viewable in low lighting conditions, and is operated with simple button controls on the side and bottom. Smart Response Technology adjusts the pre-heating and pre-cooling to ensure comfort at the set times. This thermostat is compatible with basic heating and cooling as well as some, but not all, heat pumps. Heat pumps with back-up heat, multi-stage heating/cooling systems, and electric baseboard heat are not compatible. 

Features
  • DIY install
  • 5-1-1 Day Programming
  • Save up to 33% on annual heating and cooling costs
  • Easy to Use
  • Backlit Display
  • Smart Response Technology
  • Auto change from heat to cool
  • Compatible with heating and cooling plus some heat pumps
  • 1-Year Warranty
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