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Rinnai 3" Temperature Controller for Tankless Water Heaters

Rinnai 3" Temperature Controller for Tankless Water Heaters

Regular price $110.00
Regular price Sale price $110.00
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Allows the user to change and monitor the temperature without adjusting anything directly to the water heater. Includes user-friendly buttons and a large and clear digital display. Works with residential Rinnai Tankless Water Heaters. This is a wired remote and requires a non-polarized two-core cable with a minimum gauge of 22AWG. 

Max distance of cable length depends on the number of remotes being installed. Capable of working in parallel with up to three other MC-91-2 remotes.


  • 98°F to 140°F temperature control
  • Moisture resistant plastic case
  • In-use indicator
  • Use up to four touchpads with every Rinnai unit
  • Onboard safety monitoring and diagnostics
  • On/off and priority switches
  • Max Cable Length for 1 Remote: 328 ft (100 m)
  • Max Cable Length for 2 Remotes: 164 ft (50 m)
  • Max Cable Length for 3 or 4 Remotes: 65 ft (20 m)
  • Material: Plastic


Silver Temperature Controller for Tankless Water Heaters
  • Height: 4.4 inch
  • Width:  3.5 inch
  • Depth: 1 inch
White Temperature Controller for Tankless Water Heaters
  • Height: 4.4 inch
  • Width:  3.5 inch
  • Depth:  1 inch


    To connect with a Rinnai-trained installer, you can utilize the Rinnai Dealer Locator by visiting the link: Alternatively, you can directly reach out to Rinnai's dedicated customer support team via the Toll-Free Number: 1 (800) 621-9419.

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