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

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

Dimensions	8 × 8 × 8 in

$146.34

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$146.34	0%
5–9	$139.02	5%
10+	$131.71	10%

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

Specifications & product details

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

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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Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

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