The Jandy 399,000 BTU 84% AFUE Propane Pool Heater with Copper Exchanger JXI Series (JXI400P) is a powerful and reliable pool and spa heating solution designed to provide fast temperature control and efficient performance for residential aquatic applications. Built as part of the Jandy JXi Series, this propane gas heater delivers high heating capacity with a compact design, durable construction, and dependable operation.

The Jandy JXI400P provides 399,000 BTU heating capacity with an 84% AFUE efficiency rating, helping deliver effective pool heating performance while optimizing fuel usage. Featuring a durable copper heat exchanger, this heater offers excellent heat transfer and reliable operation in demanding pool environments. Its propane fuel design makes it a versatile option for locations where natural gas is unavailable.

Key Features

• 399,000 BTU Heating Capacity – Provides powerful heating performance for large residential pools and spas
• 84% AFUE Efficiency Rating – Helps deliver efficient propane heating performance
• Propane Gas Operation – Provides reliable heating where propane fuel is preferred
• JXi Series Design – Engineered for dependable pool and spa heating
• Copper Heat Exchanger – Provides efficient heat transfer and reliable durability
• Fast Heating Performance – Helps quickly raise and maintain pool water temperatures
• Compact Installation Design – Allows flexible placement in pool equipment areas
• Durable Outdoor Construction – Built for long-term poolside operation

Product Specifications

• Brand: Jandy
• Series: JXI Series
• Model: JXI400P
• Product Type: Propane Pool Heater
• Heating Capacity: 399,000 BTU
• Efficiency Rating: 84% AFUE
• Fuel Type: Propane 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 powerful heating for larger pools and spas
• Copper heat exchanger supports efficient heat transfer
• Propane operation offers flexible installation options
• Helps maintain comfortable water temperatures during cooler weather
• Designed for dependable long-term performance

Compatibility & Installation

The Jandy JXI400P Propane Pool Heater is designed for:

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

Installation considerations:

• Confirm proper heater sizing based on pool volume, climate, and heating requirements
• Verify propane supply and connection requirements before installation
• Ensure proper ventilation and installation clearances
• Follow manufacturer installation instructions and local safety codes
• Professional pool equipment installation is recommended

Frequently Asked Questions

What is the heating capacity of the Jandy JXI400P?
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 propane gas.

What is the AFUE rating of this heater?
The Jandy JXI400P features an 84% AFUE efficiency rating.

What type of heat exchanger does this heater have?
It features a copper heat exchanger designed for efficient heat transfer and reliable operation.

What series does this heater belong to?
The JXI400P is part of the Jandy JXi Series.