KOHLER 359301-S Mr Heat Exchanger

( Brand: Kohler ), ( Manufacturer Part Number: 359301-S ), ( Part Type: Heat )

Review KOHLER Mr Cool Heat Exchanger

The **Kohler 359301-S MR Heat Exchanger** is a high-performance, stainless steel heat exchanger designed to deliver exceptional efficiency and durability in residential and light commercial water heating systems. Engineered with precision, this heat exchanger is a key component of Kohler s advanced **MR Series** water heaters, ensuring optimal heat transfer while maintaining reliability under demanding conditions. Constructed from **304-grade stainless steel**, this heat exchanger is built to withstand corrosion, scaling, and thermal stress, making it an ideal choice for areas with hard water or fluctuating temperature demands. Its **spiral-wound design** maximizes surface area for superior heat exchange, allowing for faster heating times and improved energy efficiency, which translates to lower operational costs and reduced environmental impact. The robust construction also enhances the longevity of the water heater, minimizing the need for frequent replacements and maintenance. Whether integrated into a **gas-fired, electric, or hybrid water heating system**, the Kohler 359301-S MR Heat Exchanger ensures consistent performance, delivering hot water on demand with minimal energy waste. Its seamless integration with Kohler s advanced control systems further optimizes heating processes, making it a standout choice for homeowners and professionals seeking both performance and longevity in their water heating solutions.

**Pros and Cons of buying a Kohler 359301-S MR Heat Exchanger**

The Kohler 359301-S MR is a stainless steel heat exchanger designed for use in water heating systems, particularly in combination with boilers or furnaces. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Durability and Longevity**

The heat exchanger is made from stainless steel, which is highly resistant to corrosion, rust, and scaling. This material choice significantly extends the lifespan of the component compared to copper or cast iron alternatives, reducing the need for frequent replacements.

2. **Efficiency**

Stainless steel heat exchangers are known for their thermal conductivity, allowing for efficient heat transfer between the boiler/furnace and the water. This can improve overall system efficiency, especially in systems where water heating is a critical function.

3. **Compatibility with Various Systems**

The Kohler 359301-S is designed to work with a range of heating systems, including gas boilers, oil furnaces, and other hydronic systems. Its modular design may also allow for easier integration into existing setups with minimal modifications.

4. **Low Maintenance Requirements**

Due to its corrosion-resistant properties, the heat exchanger requires less maintenance compared to other materials. This reduces downtime and service costs over the long term.

5. **Energy Savings**

An efficient heat exchanger helps the system operate at peak performance, potentially lowering energy consumption and utility bills. This is particularly beneficial in larger residential or commercial applications where water heating demands are high.

6. **Safety**

Stainless steel is less prone to leaks or failures that could lead to water damage or system malfunctions. This enhances the safety of the overall heating system.

7. **Warranty Coverage**

Kohler products often come with manufacturer warranties, which can provide peace of mind regarding the quality and performance of the heat exchanger. The specific warranty terms should be verified at the time of purchase.

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### **Cons**

1. **Higher Upfront Cost**

Stainless steel heat exchangers are generally more expensive than alternatives like copper or cast iron. The initial investment may be a barrier for budget-conscious buyers, especially in smaller-scale applications where cost savings are prioritized.

2. **Potential for Higher Installation Costs**

Depending on the existing system, installing a stainless steel heat exchanger may require additional labor or modifications, such as adjusting piping or connections. This could increase overall installation expenses.

3. **Limited Availability of Parts or Specialists**

While stainless steel is durable, finding replacement parts or specialized technicians familiar with Kohler stainless steel heat exchangers may be more challenging in some regions. This could complicate repairs or future upgrades.

4. **Size and Weight Considerations**

Stainless steel components are often heavier and bulkier than other materials. This may require reinforced mounting or additional structural support in the installation, adding to complexity or cost.

5. **Compatibility with Older Systems**

If the existing heating system is outdated or not designed for high-efficiency components, the Kohler 359301-S may not integrate seamlessly. Retrofitting could require upgrading other system components, increasing total costs.

6. **Potential for Scale Buildup (Less Common but Possible)**

While stainless steel resists corrosion, mineral deposits (scale) can still accumulate over time, particularly in hard water areas. Regular descaling or water treatment may be necessary to maintain optimal performance.

7. **Learning Curve for Installation**

The installation of a stainless steel heat exchanger may be more complex than simpler copper or cast iron models, requiring skilled labor. DIY installation is not recommended unless the installer has experience with hydronic systems.

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### **Conclusion**

The Kohler 359301-S MR heat exchanger is a high-quality, long-lasting investment for those prioritizing durability, efficiency, and low maintenance in their water heating system. Its stainless steel construction offers significant advantages in terms of corrosion resistance and performance, making it ideal for residential, commercial, or industrial applications where reliability is critical.

However, the higher upfront and potential installation costs, along with the need for specialized labor, may outweigh the benefits for smaller-scale or budget-sensitive projects. Additionally, compatibility with existing systems and the availability of parts should be carefully considered before purchase.

### **Recommendation**

- You are replacing an older, corroded, or inefficient heat exchanger.

- Your system requires a durable, long-term solution with minimal maintenance.

- You are willing to invest in a high-quality component that will improve overall system efficiency and safety.

- Your heating system is compatible with stainless steel, or you are open to minor upgrades to ensure proper integration.

- Your budget is constrained, and you can find a more affordable alternative that meets your needs.

- Your existing system is outdated, and a full upgrade (including other components) is necessary, making the heat exchanger a less critical priority.

- You lack access to skilled technicians or replacement parts for Kohler stainless steel heat exchangers in your area.

- The installation would require significant modifications that could increase costs beyond the initial savings from efficiency gains.

For most applications where longevity and performance are priorities, the Kohler 359301-S MR is a strong choice. However, conduct a cost-benefit analysis and consult with a heating professional to ensure it aligns with your specific system requirements.

Details:

This was brand new and hooked up, but never used compare to almost $600 New.

part #: 359301 prices

• $248.95-$487.76

specifications completegengin:

• brand: Kohler
• mpn: 359301-s
• part type: Heat

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• # reviews: 182
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• availability: In Stock
• quantity: 1
• started: April 18, 2026
• options: Ship-to-home
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