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iO HVAC Controls iO-Twin Universal Twinning Kit

Save 7%
Original price $257.69
Current price $239.29
SKU iO-Twin
Currently 3 in stock.

iO HVAC Controls iO-Twin Universal Twinning Kit

The twinning kit is designed to allow a single thermostat to control two separate HVAC units. It can also be expanded to control a total of four HVAC units. The twinning kit can be used on common or separate ducted systems with single-stage, multi-stage and heat pump equipment. Only standard 18-gauge thermostat wire is required. Thermostats and HVAC units can be located up to 300’ from the twinning kit panel.


  • Mounting: Aluminum back plate with mounting holes
  • Dimensions: 8” Height x 6” Width x 1.5” Depth
  • Input Voltage: 24VAC
  • Warranty: 5-year


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Installation Manual