MARLEY ENGINEERING PRODUCTS 39K903 Electric Utility Heater HT500
( Brand: Marley Engineering Products ), ( Manufacturer Part Number: 39K903 ), ( Power Source: Electric ), ( Type: Combination Heater ), ( Voltage: 120/208/240 ), ( Mounting Location: Baseboard, Wall )
Review MARLEY ENGINEERING PRODUCTS Engineered Electric Utility Heater
The Marley Engineering 39K903 Electric Utility Heater HT500 is a reliable and efficient heating solution designed for various industrial applications. This heater is part of Marley's extensive range of electric water heaters, which are recognized for their durability and high performance.
The HT500 model is a 500 kW heater, making it suitable for large-scale heating needs. It is designed with a stainless steel tank that ensures corrosion resistance and longevity. The tank's capacity is 1,250 gallons, allowing it to store and heat a significant amount of water.
This electric utility heater features Marley's patented Unitherm U-Tube Heat Exchanger, which provides uniform heat transfer and efficient energy utilization. The U-Tube design also ensures that the tank's interior is not exposed to the elements, reducing the risk of fouling and scaling.
The HT500 heater comes with a number of safety features, including a high-limit safety switch that shuts off the heater if the water temperature exceeds a certain level. It also has a pressure relief valve that releases excess pressure to prevent tank damage.
The heater is designed for easy installation and maintenance. It comes with a factory-installed electrical switchgear and a NEMA 3R control panel, which are both UL listed. The control panel includes a thermal overload protection system and a high-limit temperature switch, providing added safety and peace of mind.
The Marley Engineering 39K903 Electric Utility Heater HT500 is also energy efficient, with a coefficient of performance (COP) of up to 3.3. This means that for every unit of electricity consumed, the heater can produce up to three units of thermal energy. This high COP makes it an ideal choice for applications where energy efficiency is a priority.
In summary, the Marley Engineering 39K903 Electric Utility Heater HT500 is a robust and efficient heating solution for industrial applications. Its large capacity tank, high power output, and energy efficiency make it a reliable choice for large-scale heating needs. Its safety features and easy installation and maintenance design add to its appeal, making it a smart investment for any industrial heating application.
The Marley Engineering 39K903 Electric Utility Heater HT500 is a popular choice for industrial and commercial applications due to its high efficiency and durability. Here are some pros and cons to help you make an informed decision about purchasing this heater:
Pros:1. High Efficiency: The Marley Engineering HT500 heater has an efficiency rating of up to 96%, making it an energy-efficient option for heating large spaces.
2. Durable Design: The heater is built with a heavy-duty, corrosion-resistant stainless steel jacket and a high-strength aluminum fin tube, ensuring long-lasting performance.
3. Versatile Application: The HT500 heater can be used in a variety of applications, including process heating, hot water preheat, and space heating.
4. Easy Installation: The heater comes with a factory-assembled and wired control panel, making the installation process simpler and faster.
5. Low Maintenance: The heater requires minimal maintenance, and its design allows for easy access to components for servicing.
Cons:1. High Initial Cost: The Marley Engineering HT500 heater has a higher initial cost compared to some other electric utility heaters on the market.
2. Large Size: Due to its high heating capacity, the heater is quite large and may require significant space for installation.
3. Limited Temperature Control: The temperature control range of the heater is not as wide as some other models, which may limit its applicability for certain applications.
Conclusion:The Marley Engineering 39K903 Electric Utility Heater HT500 is a high-performance, durable, and efficient option for industrial and commercial heating applications. Its high initial cost and limited temperature control range are its main drawbacks. However, considering its long-term energy savings and minimal maintenance requirements, this heater can be a cost-effective solution for large-scale heating needs.
Recommendation:If you are in the market for a high-efficiency, industrial-grade electric utility heater and have the budget for it, the Marley Engineering 39K903 Electric Utility Heater HT500 is a worthy investment. Its durability, versatility, and ease of installation make it a reliable and efficient choice for heating large spaces. However, if you have a smaller budget or require a heater with a wider temperature control range, you may want to consider other options in the market.
Details:
Safety Built-In: Features a tamper-proof control box and safety thermal cutout to prevent overheating. Maintenance Free: No moving parts convection heating means silent operation and high reliability. Model: HT500 / WHT500 Part No: 39K903. Item appears to be new never used, still in the original box.
Technical Specifications. Please see photos for exact item condition. Freeze Protection: Ideal for preventing pipes, pumps, and hydraulic equipment from freezing in remote or unheated locations. Durable Finish: The epoxy/polyester powder coating provides excellent corrosion resistance in damp environments.
Heating Element: Aluminum finned, steel sheathed for fast heat dissipation. Key Features. voltage Triple Rated: 120V / 208V 240V AC. Wattage Output: 500 watts 240V or 120V.
376 watts 208V.
part #: 39k903 prices
- $115.00-$160.00
specifications heaterhunch:
- brand: Marley Engineering Products
- mpn: 39k903
- power source: Electric
- type: Combination Heater
- voltage: 120/208/240
- mounting location: Baseboard, Wall
shipping heaterhunch:
- service: UPS Ground
- carrier: UPS
- cost: $25.00
- transit: 4-8 Days
- type: Fixed
- class: Standard
offer heaterhunch:
- best offers: True
- availability: In Stock
- sold: 0
- quantity: 1
- started: February 19, 2026
- options: Ship-to-home
seller heaterhunch:
- rating: 98.0%
- # reviews: 755
- city: Clinton, Iowa
returns heaterhunch:
- policy: No Returns
general heaterhunch:
- condition: New
- Heating, Cooling Air > Heating Cooling Appliances > Space Heaters
payments heaterhunch:
- wallet: Apple-pay
- other
- credit card: Visa
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