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OEM Jandy JXi 400N Natural Gas Pool & Spa Heater | 399,000 BTUs. The Jandy JXi 400N Natural Gas Pool & Spa Heater offers top-tier performance with 399,000 BTUs of heating power, designed to efficiently heat both residential and professional pools and spas. Its compact and lightweight design (126 lbs) allows for easy installation and retrofitting, often without the need for plumbing adjustments, especially when replacing older models like the MasterTemp® or Max-E-Therm®.
This high-efficiency unit boasts 84% thermal efficiency and meets stringent DOE energy standards, making it an environmentally-friendly choice. Ready for integration with Jandy’s AquaLink® systems, the JXi 400N allows remote control via the iAquaLink® app for ultimate convenience. For those seeking further energy savings, the optional VersaFlo™ Integrated Bypass technology is available.
Energy-Efficient Heating
84% thermal efficiency rating and low-NOx design surpasses strict DOE Energy Efficiency requirements.
Automation-Ready
Compatible with AquaLink® automation systems for anytime, anywhere control from your mobile device using the iAquaLink™ app.
Ultra-Compact Lightweight Design
Easy to store, transport, and install, JXi easily fits on a 2’ x 2’ pad and is 38% lighter with a 28% smaller footprint
Best Retrofit Option
Plumbing flexibility for quick Mastertemp® and Max-E Therm® replacement that requires no plumbing adjustments.
Flexible Installation
Top can be easily removed for increased accessibility and rotated 180 degrees so you never need to rotate headers. Also includes a flip up electrical panel for convenient setup and service.
Versa Plumb® -Ready
Installation in the Versa Plumb system reduces plumbing costs and increases energy efficiency, all while using the smallest footprint available.
Specification
- Includes Versaflo Bypass - No
- Depth - 22.1"
- Efficiency - 84%
- Energy Star - No
- Exchanger - Copper
- Fuel Tipe - Natural Gas
- Headers - Hi-Temp Poly
- Height - 26.5"
- Input Rate Bruh - 399K BTUH
- Max. GPM - 100
- Min. GPM - 30
- Pool Surface Area - up to 600sft
- Professional Installation Required - Yes
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Smart Product - Automation Compatible
- Vent Diameter - 8"
- Weight - 126 lbs
- Width - 22.9"
Highlights
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High Efficiency: 84% thermal efficiency meets DOE energy standards
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Compact & Lightweight: Easy to install and retrofit, weighing only 126 lbs
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Automation-Ready: Fully integrates with AquaLink® for remote control via iAquaLink®
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Flow Rate Range: Compatible with flow rates from 30 to 100 GPM
- Energy Savings: Optional VersaFlo™ Integrated Bypass for enhanced energy efficiency
OEM Jandy JXi 400N Natural Gas Pool & Spa Heater | 399,000 BTUs
The Jandy JXi 400N delivers outstanding heating performance in a compact, lightweight design. Engineered for residential and commercial pools and spas, this heater offers 399,000 BTUs of powerful heating while maintaining high energy efficiency and easy automation integration.
Energy-Efficient Heating
84% Thermal Efficiency
Exceeds DOE energy standards for an eco-friendly and cost-effective operation.
Low-NOx Design
Reduces emissions for a more environmentally responsible heating solution.
Compact and Lightweight
Space-Saving Design
Fits on a 2’ x 2’ pad with a 28% smaller footprint compared to similar heaters.
Easy to Handle
At just 126 lbs, it simplifies storage, transport, and installation.
Seamless Automation Integration
AquaLink® Compatible
Easily connects with AquaLink® systems for control through the iAquaLink® app.
Remote Monitoring
Operate your pool or spa heater from anywhere, anytime via mobile device.
Retrofit-Friendly Installation
MasterTemp® and Max-E-Therm® Replacement
Designed for quick swaps without the need for plumbing adjustments.
Rotatable Top and Flip-Up Panel
Top can rotate 180° for easy access, and the flip-up electrical panel streamlines service and setup.
Enhanced Performance Options
VersaFlo™ Integrated Bypass (Optional)
Provides additional energy savings when heating is not always required.
Versa Plumb®-Ready
Integrates with Jandy’s Versa Plumb® system for reduced plumbing costs and maximum efficiency.
Specifications
Fuel Type
Natural Gas
Input Rate
399K BTUH
Efficiency
84% Thermal Efficiency
Heat Exchanger
Copper
Flow Rate
30 to 100 GPM
Dimensions
22.1" Depth × 22.9" Width × 26.5" Height
Vent Diameter
8"
Weight
126 lbs
Installation
Professional installation required; smart automation compatible
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