THERM-O-DISC 331603 Disctherm Water Thermostat 89T13 X5

( Brand: Therm-o-disc ), ( Manufacturer Part Number: 331603 ), ( Model: 89T13 331603 ), ( Part Type: Water Thermostat )

Review THERM O DISC disctherm Hot Water Thermostat X5

The Thermo-Disc 331603 Thermo-Disc Water Thermostat X5 is a high-performance temperature control solution designed for various water heating applications. This thermostat is manufactured by the renowned brand, Thermo-Disc, known for its reliable and durable temperature control products.

The Thermo-Disc 331603 is a mechanical thermostat that comes in a pack of five pieces. Each thermostat features a simple yet effective design, with a large temperature dial that allows for easy and precise temperature adjustment. The thermostat housing is made of high-quality, corrosion-resistant brass, ensuring long-lasting durability even in harsh water conditions.

The Thermo-Disc 331603 thermostat is designed to maintain a consistent water temperature by opening and closing a heating element or valve as necessary. It has a temperature range of 40 F to 140 F (4 C to 60 C), making it suitable for a wide range of water heating applications, including residential hot water systems, industrial processes, and commercial applications.

One of the key features of the Thermo-Disc 331603 thermostat is its thermal limit protection. This feature ensures that the water temperature does not exceed the set limit, preventing potential damage to the system and ensuring safe operation. The thermostat also has a built-in bypass, which allows for easy installation and maintenance.

The Thermo-Disc 331603 thermostat is easy to install, requiring only basic plumbing skills and tools. It is compatible with various heating systems, including electric, gas, and oil-fired water heaters. The thermostat also comes with clear installation instructions and mounting hardware, making the installation process straightforward and hassle-free.

In summary, the Thermo-Disc 331603 Thermo-Disc Water Thermostat X5 is a high-quality, reliable, and easy-to-install temperature control solution for various water heating applications. Its durable brass housing, wide temperature range, thermal limit protection, and built-in bypass make it a popular choice among professionals and DIY enthusiasts alike.

Therm-O-Disc Thermostats Comparison: 331603 vs. 89T13

The Therm-O-Disc brand offers a variety of water thermostats suitable for different applications. In this comparison, we will discuss the features, advantages, and disadvantages of Therm-O-Disc 331603 and Therm-O-Disc 89T13 water thermostats.

1. Features: The Therm-O-Disc 331603 is a pneumatically operated, direct-mounted thermostat. It is designed for use with hot water applications up to 210 F (98.9 C). This thermostat comes with a 1/2" NPT threaded connection and can be used with both copper and steel piping.

- Simple installation: The pneumatic design allows for easy installation without the need for electrical wiring.

- Versatile: Can be used with both copper and steel piping.

- Durable: Made from brass and stainless steel, ensuring long-lasting performance.

- Limited temperature range: Not suitable for high-temperature applications above 210 F (98.9 C).

- Manual adjustment: The temperature setting must be manually adjusted using the built-in dial.

1. Features: The Therm-O-Disc 89T13 is an electric, remote-mounted thermostat designed for use with hot water applications up to 210 F (98.9 C). It comes with a 1/2" NPT female threaded connection and can be used with copper piping.

- Wide temperature range: Offers a wider temperature range than the 331603 model, allowing for more application flexibility.

- Adjustable temperature setting: The temperature can be easily adjusted using the remote control.

- Compact design: The remote-mounted design saves space in the installation area.

- Complex installation: The electric design requires electrical wiring for installation, which might be more time-consuming and complex than the pneumatic design.

- Limited compatibility: Can only be used with copper piping.

Both Therm-O-Disc 331603 and Therm-O-Disc 89T13 water thermostats have their unique features and advantages. The Therm-O-Disc 331603 is suitable for simple installations and applications up to 210 F (98.9 C), while the Therm-O-Disc 89T13 offers a wider temperature range and remote temperature adjustment, making it more versatile for various applications.

The choice between Therm-O-Disc 331603 and Therm-O-Disc 89T13 depends on your specific application requirements and installation constraints. If you need a simple, direct-mounted thermostat for low to medium temperature applications, the Therm-O-Disc 331603 is a good option. However, if you require a thermostat with a wider temperature range and remote temperature adjustment, the Therm-O-Disc 89T13 would be the better choice.

Details:

As title says this is for 5 total Thermostats.

part #: 331603 price

• $37.98

specifications wateheat:

• brand: Therm-o-disc
• mpn: 331603
• model: 89t13 331603
• part type: Water Thermostat

payments wateheat:

• other
• credit card: Mastercard
• wallet: Google-pay

offer wateheat:

• availability: In Stock
• best offers: True
• options: Ship-to-home
• sold: 0
• quantity: 1
• started: March 13, 2026

general wateheat:

• condition: Open box
• Heating, Cooling Air > Water Heaters > Water Heater Parts

returns wateheat:

• policy: No Returns

seller wateheat:

• rating: 100.0%
• # reviews: 364
• city: Centralia, Washington

shipping wateheat:

• transit: 10-13 Days
• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• carrier: USPS
• cost: $0.00

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