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Rinnai MC-91-2S Standard Remote Controller 98°-140°F Silver Water Heater Control

Brand: Rinnai|SKU: MC-91-2S

$146.34

Only 1 left in stock

Same-item volume pricing
QuantityUnit priceSaving
1–4$146.340%
5–9$139.025%
10+$131.7110%

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REGIONS SUPPLY BUYING GUIDE

Product details & buying advice

Identify the water heater and vent system before selecting a control, accessory or vent component.

Product type Water-heater controls and vent components
Part / SKU MC-91-2S

What to check before ordering

  • Record the full heater model and its indoor/outdoor and condensing/non-condensing configuration.
  • Use the model instructions to confirm the vent system, diameter and function of the replacement part.
  • Have a qualified installer check the complete vent route and termination.

Service reminder: A similar diameter or connector is not enough to approve mixed vent components or control models.

Have gas-system installation and service completed by qualified personnel. Use the current instructions for the exact model and the requirements that apply at the installation location.

Product help & manufacturer resources

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Rinnai MC-91-2S Standard Remote Controller (Silver)

The Rinnai MC-91-2S Standard Remote Controller is a genuine OEM wall-mounted controller designed for compatible Rinnai residential and commercial tankless water heaters. It allows users to conveniently adjust water temperature from 98°F to 140°F, monitor system operation, and manage priority control directly from the remote.

This controller replaces the MC-91-1S and features a bright digital LED display, simple push-button controls, and durable silver housing for long-lasting performance.

Features

  • Genuine Rinnai OEM replacement controller
  • Part Number: MC-91-2S
  • Replaces MC-91-1S
  • Adjustable temperature range: 98°F–140°F
  • Easy-to-read digital LED display
  • Priority control button
  • Water temperature adjustment controls
  • On/Off operation
  • Wall-mounted installation
  • Modern silver finish
  • Designed for residential and commercial applications

Applications

  • Rinnai tankless water heaters
  • Residential hot water systems
  • Commercial hot water systems
  • Replacement remote controller
  • New installations and maintenance

Condition

  • Brand New
  • Unused
  • OEM replacement part
  • Ready for installation

Package Includes

  • (1) Rinnai MC-91-2S Standard Remote Controller
  • Installation instructions (if included by manufacturer)

Product details

Part / SKU MC-91-2S

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