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Honeywell THX9421R5021WW 2 Wire IAQ High Definition Touch Screen Thermostat with Red LINK Technology, White
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Honeywell THX9421R5021WW 2 Wire IAQ High Definition Touch Screen Thermostat with Red LINK Technology, White

Users say:
This thermostat is a great choice for those looking for a reliable and easy-to-use HVAC system. It is easy to set up and use, but the TotalConnect mobile app is archaic and borderline useless. Additionally, the customer service from Honeywell is not great, as they are not willing to help with setup and support.
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Control heating, cooling and IAQ equipment with only 2 wires at the thermostat Smart Schedule - programs in seconds for any lifestyle Red LINK wireless communication Precise temperature control (+/- 1 Degrees Fahrenheit ) for reliable and consistent temperature Controls up to 4-stages of heat and 2-stages of cool in a heat pump system an…
Control heating, cooling and IAQ equipment with only 2 wires at the thermostat Smart Schedule - programs in seconds for any lifestyle Red LINK wireless communication Precise temperature control (+/- 1 Degrees Fahrenheit ) for reliable and consistent temperature Controls up to 4-stages of heat and 2-stages of cool in a heat pump system and up to 3-stages of heat and 2-stages of cool in a conventional system.
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Review summary

AI-generated content
This thermostat is a great choice for those looking for a reliable and easy-to-use HVAC system. It is easy to set up and use, but the TotalConnect mobile app is archaic and borderline useless. Additionally, the customer service from Honeywell is not great, as they are not willing to help with setup and support.

Pros

  • Easy to use
  • Remote control functionality
  • Good temperature control
  • Affordable price

Cons

  • Archaic mobile app design
  • Limited functionality
  • Limited user-friendly features
Read original reviews

Description

Control heating, cooling and IAQ equipment with only 2 wires at the thermostat Smart Schedule - programs in seconds for any lifestyle Red LINK wireless communication Precise temperature control (+/- 1 Degrees Fahrenheit ) for reliable and consistent temperature Controls up to 4-stages of heat and 2-stages of cool in a heat pump system and up to 3-stages of heat and 2-stages of cool in a conventional system.

Specifications

Dimensions4.5 X 0.9 X 3.5 Inches
StyleWhite
Product Dimensions:‎4.5 X 0.9 X 3.5 Inches; 8.8 Ounces
Date First Available:‎December 11, 2014
BrandHoneywell
FeaturesAuto Changeover, Programmable
Item Model Number:‎Thx9421r5021ww
Control StyleHand Control
Country Of Origin:‎Mexico
Manufacturer:‎Apr Supply Co.
Asin:‎B00yxt60v2