The Jandy 399,000 BTU Natural Gas Pool Heater with Copper Exchanger JXI Series (JXI400N) is a high-performance pool and spa heating solution designed to provide fast, reliable, and efficient temperature control for residential aquatic applications. Built as part of the Jandy JXi Series, this natural gas heater delivers powerful heating capacity while offering a compact design, durable construction, and dependable operation.

The Jandy JXI400N provides 399,000 BTU heating capacity and features a copper heat exchanger designed for efficient heat transfer and reliable performance in pool environments. Using natural gas as the fuel source, this heater quickly raises and maintains water temperatures, helping extend the swimming season and provide comfortable pool and spa experiences throughout the year.

Key Features

• 399,000 BTU Heating Capacity – Provides powerful heating performance for large residential pools and spas
• Natural Gas Operation – Delivers fast and reliable heating using natural gas fuel
• JXi Series Design – Engineered for efficient and dependable pool heating performance
• Copper Heat Exchanger – Provides effective heat transfer and reliable operation
• Compact Installation Design – Allows flexible placement in pool equipment areas
• Fast Temperature Recovery – Helps quickly heat pool and spa water
• Durable Outdoor Construction – Designed to withstand poolside environments
• Easy-to-Use Controls – Provides convenient temperature adjustment and operation

Product Specifications

• Brand: Jandy
• Series: JXI Series
• Model: JXI400N
• Product Type: Natural Gas Pool Heater
• Heating Capacity: 399,000 BTU
• Fuel Type: Natural Gas
• Heat Exchanger: Copper
• Application: Residential Swimming Pools and Spas
• Installation Type: Outdoor Pool Equipment

Benefits

• Extends the swimming season with reliable pool heating
• Provides rapid heating performance for larger pools
• Copper heat exchanger supports efficient heat transfer
• Compact design helps simplify equipment installation
• Delivers dependable performance in demanding pool environments
• Helps maintain comfortable water temperatures during cooler conditions

Compatibility & Installation

The Jandy JXI400N Natural Gas Pool Heater is designed for:

• Residential swimming pools
• Spas and hot tubs
• Large pool heating applications
• New pool installations
• Existing heater replacement projects

Installation considerations:

• Confirm proper heater sizing based on pool volume and climate conditions
• Verify natural gas supply and connection requirements
• Ensure proper ventilation and installation clearances
• Follow manufacturer guidelines and local building codes
• Professional pool equipment installation is recommended

Frequently Asked Questions

What is the heating capacity of the Jandy JXI400N?
The heater provides 399,000 BTU of heating capacity for residential pool and spa applications.

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

What type of heat exchanger does the JXI400N use?
The heater features a copper heat exchanger designed for efficient heat transfer.

What series does this heater belong to?
The JXI400N is part of the Jandy JXi Series.

Is this heater suitable for large pools?
Yes, with its high BTU output, it is designed for larger residential pool and spa heating applications when properly sized.