Pentair 474063 Tube Sheet Coil Assembly Kit For Model 250HDNA; 250HD-LP MasterTemp(R) Heater
The Tube Sheet Coil Assembly Kit for the MasterTemp 250HDNA/250HD-LP Heater is a comprehensive replacement part designed specifically for Pentair MasterTemp HD series pool and spa heaters. Here’s what you need to know:
Specifications
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Compatibility: This kit is designed to work with Pentair MasterTemp HD heaters—specifically models 250HDNA and 250HD-LP (or 250HD-LP1). Ensuring compatibility is essential before purchasing, as it is engineered to match the heater’s existing water system components.
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What It Includes: The kit comes as a complete replacement for the tube sheet coil assembly. It includes not only the main coil assembly but also a coil sealing o‑ring kit. The inclusion of the o‑ring kit aids in establishing a secure, leak‑free seal when installing the new assembly.
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Dimensions and Build: Dimensions for the kit are approximately 18.5 inches in length, 10.5 inches in height, and 18.5 inches in width. The robust construction is geared toward withstanding the thermal and pressure stresses typical for pool and spa heaters.
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Function and Importance: In pool and spa heater systems, the tube sheet coil assembly plays a vital role. It’s responsible for transferring heat from the combustion chamber to the water. A properly functioning coil assembly ensures efficient heating while minimizing leakage or premature wear. Replacing this component as part of routine maintenance or after damage can help restore optimal performance.
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Market Availability and Pricing: Available through various pool parts suppliers, prices for this replacement kit tend to be in the range of $1,500 to $1,900—though the exact price can vary based on the supplier and any current promotions . Checking multiple vendors can help you secure the best deal.
Installation and Maintenance Tips
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Installation: It is recommended that installation be handled by a professional familiar with pool heater systems. Proper installation is critical to ensure that all seals are tight and that the coil assembly functions as intended. The kit’s components must align perfectly with the heater’s housing to maintain efficiency.
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Maintenance: Regular inspections of your heater’s water system components, including the coil assembly, can help preempt issues such as scaling or leaks. Replacing o‑rings during installation—if not already included—can also contribute to a longer service life for your heater.
