The Pentair MasterTemp Series 400,000 BTU 84% Thermal Efficiency Natural Gas Pool Heater ASME (460775) is a high-performance pool and spa heating solution designed to deliver powerful, reliable, and efficient temperature control for commercial and large residential aquatic applications. Built as part of the trusted Pentair MasterTemp Series, this ASME-certified heater combines advanced heating technology, durable construction, and dependable operation for demanding pool environments.

The Pentair MasterTemp 460775 provides 400,000 BTU heating capacity with 84% thermal efficiency, delivering fast heat recovery and consistent water temperature control. Its ASME construction is designed for applications requiring enhanced durability and reliable performance, making it suitable for high-use pools, spas, and commercial installations.

Key Features

• 400,000 BTU Heating Capacity – Provides powerful heating performance for large pools and spas
• 84% Thermal Efficiency – Helps deliver efficient natural gas heating operation
• Natural Gas Operation – Provides reliable and consistent heat output
• ASME Certified Construction – Designed for demanding commercial and high-use applications
• MasterTemp Series Design – Engineered for dependable pool and spa heating performance
• Fast Heat Recovery – Quickly raises and maintains desired water temperatures
• Durable Heavy-Duty Construction – Built for long-term operation in challenging environments
• Reliable Pool Heating Performance – Supports consistent temperature management

Product Specifications

• Brand: Pentair
• Series: MasterTemp Series
• Model: 460775
• Product Type: Natural Gas Pool Heater
• Heating Capacity: 400,000 BTU
• Efficiency Rating: 84% Thermal Efficiency
• Fuel Type: Natural Gas
• Certification: ASME
• Application: Commercial and Large Residential Swimming Pools & Spas
• Heater Type: Gas Pool Heater

Benefits

• Provides powerful heating for large pool and spa systems
• Helps extend the swimming season with dependable temperature control
• ASME-rated design supports demanding pool environments
• Maintains consistent water temperatures with efficient heat output
• Designed for long-term reliability in high-use applications
• Supports commercial-grade pool heating performance

Compatibility & Installation

The Pentair MasterTemp 460775 Natural Gas Pool Heater is designed for:

• Commercial swimming pools
• Large residential pools
• Spas and aquatic facilities
• High-demand pool heating applications
• New installations and replacement heater projects

Installation considerations:

• Confirm proper heater sizing based on pool volume and heating requirements
• Verify natural gas supply and connection specifications
• Ensure proper ventilation and installation clearances
• Maintain recommended water chemistry for optimal heater operation
• Follow manufacturer installation guidelines and local safety requirements
• Professional pool equipment installation is recommended

Frequently Asked Questions

What is the heating capacity of the Pentair 460775?
The heater provides 400,000 BTU of heating capacity for large pool and spa applications.

What fuel type does this heater use?
This model operates using natural gas.

What is the efficiency rating of the Pentair MasterTemp 460775?
The heater features 84% thermal efficiency.

What does ASME mean for this pool heater?
ASME certification indicates the heater is designed and constructed to meet recognized standards for demanding pool and commercial applications.

What series does this heater belong to?
This model is part of the Pentair MasterTemp Series.