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JANDY JXIQ400PK LOW NOX VERSAFLO PROPANE POOL & SPA HEATER – 400K BTU, POLYMER HEADERS, COPPER HEAT EXCHANGER
Heating Capacity: 399,000 BTU
Thermal Efficiency: 84%
Fuel Type: Propane
Heat Exchanger: Copper
Bypass: VersaFlo Integrated
Maximum Water Flow: 100 GPM
Power: 115V / 230V Auto-Sensing
Emissions: Low NOx
The Jandy JXIQ400PK Propane Pool & Spa Heater delivers 399,000 BTU at 84% thermal efficiency - the high-output size in the JXi range, recovering large pools and spa combinations quickly.
The VersaFlo integrated bypass is the reason to choose the JXiQ over the standard JXi. It automatically routes water around the heater when heating is not called for, which cuts hydraulic losses across the whole system and protects the heat exchanger from unnecessary flow. Factory-installed VersaFlo also extends the heat exchanger warranty to five years.
A weld-free combustion chamber and venturi-driven air and gas mixing system improve corrosion resistance and combustion stability, and a thermal regulator valve balances flow and temperature automatically. SMART sensor monitoring and a digital interface handle diagnostics, with AquaLink and iAquaLink automation support built in.
Key Features
- 399,000 BTU heating capacity
- 84% thermal efficiency
- Propane
- Copper heat exchanger
- VersaFlo integrated bypass for hydraulic efficiency
- 5-year heat exchanger warranty with factory-installed VersaFlo
- Weld-free combustion chamber for corrosion resistance
- Venturi-driven air and gas mixing system
- Thermal regulator valve for balanced flow and temperature control
- SMART sensor performance monitoring
- Digital control interface
- Automation-ready with Jandy AquaLink and iAquaLink
- Low NOx design
- Ultra-compact, lightweight cabinet
Specifications
| Specification | Details |
| Brand | Jandy |
| Part Number | JXIQ400PK |
| Series | JXiQ |
| Fuel Type | Propane |
| BTU Input | 399,000 BTU |
| Thermal Efficiency | 84% |
| Heat Exchanger | Copper |
| Integrated Bypass | VersaFlo |
| Maximum Water Flow | 100 GPM |
| Water Connections | 2" |
| Power | 115V / 230V Auto-Sensing |
| Emissions | Low NOx |
| Automation | AquaLink / iAquaLink Compatible |
| Heat Exchanger Warranty | 5 Years (Factory-Installed VersaFlo) |
What's Included
- Jandy JXIQ400PK Propane Pool & Spa Heater
- Copper heat exchanger assembly
- VersaFlo integrated bypass
- Digital control interface
- Installation and operation documentation
The Jandy JXIQ400PK pairs 399,000 BTU with factory VersaFlo bypass and a 5-year exchanger warranty - high output for large pools with the hydraulic efficiency of an integrated bypass.
Learn more at Jandy:
https://www.jandy.com/en/products/pool-heating/heaters/jxiq
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