474065 Pentair® Tube Sheet Coil is a premium OEM heat exchanger designed specifically for MasterTemp® 400HD NA 460805 and 400HD LP pool & spa heaters.
The PENTAIR 474065 Tube Sheet Coil Assembly Kit is a premium OEM replacement heat exchanger designed specifically for MasterTemp® 400HD NA and 400HD LP pool & spa heaters. Built with cupro-nickel construction, this heavy-duty coil assembly provides exceptional durability, corrosion resistance, and efficient heat transfer—making it ideal for demanding pool environments, including saltwater systems.
The Pentair 474065 Tube Sheet Coil Assembly Kit is the ultimate solution for restoring and upgrading your MasterTemp 400HD heater. Featuring heavy-duty cupro-nickel construction, complete OEM components, and compatibility with both natural gas and propane systems, this kit ensures maximum efficiency, durability, and long-term performance for residential and commercial pool heating systems.
This complete kit restores heater performance by replacing worn, scaled, or corroded heat exchanger components, ensuring optimal heating efficiency and long-term reliability.
Key Features & Benefits
- OEM Genuine Pentair Part (474065)
Ensures perfect fit, performance, and compatibility with Pentair systems. - Heavy-Duty Cupro-Nickel Construction
Superior resistance to corrosion, chemical damage, and aggressive water conditions (ideal for saltwater pools). - Complete Assembly Kit
Includes essential components such as O-rings, insulation, ignitor, and gasket kits for a full rebuild. - Optimized Heat Transfer Efficiency
Designed with coiled tube geometry to maximize heat exchange and energy efficiency. - Restores Heater Performance
Replaces damaged or scaled heat exchangers to bring heaters back to peak operation. - Designed for Post-2009 Units
Compatible with newer “New Tub Design” MasterTemp heaters manufactured after January 12, 2009.
What’s Included
- Tube Sheet Coil Assembly (Heat Exchanger Core)
- Coil / Tube Sheet O-Ring Kit
- Insulation Kit
- Ignitor Assembly
- Blower Adapter Plate & Gasket Kit
Compatibility
Compatible Heater Models:
- Pentair MasterTemp® 400HD NA
- Pentair MasterTemp® 400HD LP
- Sta-Rite Max-E-Therm® 400HD Series
Important Notes:
- For units manufactured after 01/12/2009 (new tub design)
- Works with both natural gas (NA) and propane (LP) heater configurations
Technical Specifications
- Part Number: 474065
- Material: Cupro-Nickel Heat Exchanger
- Heater Capacity: 400,000 BTU
- Tube Configuration: Multi-coil (approx. 6 coiled tubes)
- Application: Pool & Spa Heater Heat Exchanger Replacement
- Design Type: Heavy-Duty (HD Series)
Use Cases
- Replacing a leaking or corroded heat exchanger
- Restoring reduced heating performance
- Upgrading to cupro-nickel for saltwater pools
- Preventing heater shutdowns caused by internal scaling or blockage
- Maintenance or rebuild of high-use commercial or residential heaters
Why Choose Cupro-Nickel?
Cupro-nickel heat exchangers offer significant advantages over standard copper:
- Better resistance to saltwater corrosion
- Longer lifespan in chemically aggressive environments
- Reduced maintenance and replacement frequency
We sells only brand new products; however, we do not provide any warranty coverage ourselves, nor do we guarantee manufacturer warranty eligibility.
It is the sole responsibility of the purchaser to verify whether a product qualifies for warranty coverage prior to making a purchase.
We strongly recommend contacting the product manufacturer directly to confirm warranty eligibility.
By completing your purchase, you acknowledge and agree that we are not liable for warranty coverage or support if the manufacturer refuses to honor the warranty based on their policies.
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