Product Overview

The Jandy JXiQ ASME Natural Gas Heater | JXIQ400NS is a commercial-grade smart pool and spa heater designed for powerful heating, advanced diagnostics, and long-term durability in demanding pool environments. With 400,000 BTU class heating performance, this heater is built for large residential pools, pool/spa combinations, commercial facilities, semi-commercial systems, and high-demand heating applications.

The JXiQ platform combines Jandy’s compact heater design with next-generation smart technology. Built-in SMART sensors monitor heater performance, support proper installation, and provide convenient service information. The heater also includes self-diagnostic capability and Bluetooth® connectivity for simplified setup and service. Jandy also notes AquaLink automation compatibility for mobile control through iAquaLink when paired with compatible Jandy automation.

This ASME natural gas model is built with a cupronickel heat exchanger and bronze headers, giving it enhanced corrosion resistance and durability for high-use applications, saltwater pools, and more aggressive water environments when chemistry is properly maintained.

⚠️ Important Purchase Notice

This product is intended to be purchased and installed by pool professionals. Product support is not provided to homeowners.

Returns are not accepted on this or any electronic equipment.

Damages to product from shipping will be covered and must be reported promptly.

To prevent possible damage during transit, we strongly recommend selecting Freight.

By purchasing this item, you agree to the terms above.

Ideal For

• Commercial swimming pools
• Semi-commercial pool systems
• Large residential pools
• Pool and spa combination systems
• High-demand pool heating applications
• Natural gas equipment pads
• Saltwater pools with properly maintained chemistry
• Hotels, HOAs, apartments, condos, and aquatic facilities
• ASME heater replacement projects
• Systems requiring cupronickel heat exchanger durability
• Facilities needing smart diagnostics and service-friendly heater controls
• Professional pool heater installations

Key Features

• 400,000 BTU class heating performance — delivers strong heating capacity for large pools, spas, and commercial-style applications.
• Natural gas operation — designed for compatible natural gas fuel systems.
• ASME compliant construction — built for commercial, semi-commercial, and high-demand installations requiring ASME-rated equipment.
• Cupronickel heat exchanger — provides enhanced resistance to corrosion, scale, and aggressive water conditions compared with standard copper exchangers.
• Bronze headers — durable header construction suited for demanding pool and spa heating environments.
• JXiQ smart heater platform — adds advanced sensing, diagnostics, and service-friendly technology.
• SMART sensor technology — helps monitor performance and support proper heater operation.
• Bluetooth® connectivity — allows service access and setup support through compatible tools and devices.
• Self-diagnostic capability — helps identify operating conditions and service needs more efficiently.
• Heating-time estimate functionality — smart sensors can help estimate heating time so users can better plan pool or spa use.
• AquaLink / iAquaLink compatible — supports connected control through compatible Jandy automation systems.
• Compact Jandy heater footprint — designed for installation flexibility compared with many larger commercial-style heaters.

Benefits

The Jandy JXIQ400NS gives pool owners and commercial operators a powerful heating solution with advanced smart diagnostics and heavy-duty construction. The 400K BTU class capacity helps reduce heat-up time for large pools and spas, while the natural gas platform provides dependable performance for high-use systems.

The cupronickel heat exchanger and bronze headers make this model especially well suited for demanding applications where durability matters. These components help protect the heater in properly maintained saltwater pools, high-traffic commercial pools, and systems with more challenging water conditions.

For service professionals, the JXiQ platform adds useful diagnostic and setup features, including SMART sensors, self-diagnostics, and Bluetooth connectivity. This can help reduce troubleshooting time and support better installation verification.

Specifications

Included Components

• 1 × Jandy JXiQ ASME Natural Gas Pool and Spa Heater
• Integrated smart digital control system
• Cupronickel heat exchanger
• Bronze header assembly
• SMART sensor system
• Bluetooth service connectivity hardware
• Manufacturer-supplied installation documentation

Gas line materials, shutoff valve, gas regulator if required, electrical wiring, bonding materials, plumbing valves, unions, venting components, equipment pad materials, automation wiring, and installation labor are sold separately unless specifically included by the supplier.

Installation Notes

This heater must be installed by a qualified pool professional, licensed gas technician, or licensed contractor as required by local code. Proper installation requires correct natural gas supply sizing, gas pressure verification, electrical wiring, bonding, grounding, water flow verification, plumbing layout, combustion air, and venting where required.

Before installation, confirm that the site requires a natural gas heater and that the gas supply can support a 400K BTU class pool/spa heater. The system should also be evaluated for correct flow rate, equipment pad clearance, automation requirements, and ASME compliance needs.

Water chemistry must be maintained within recommended ranges to protect the cupronickel heat exchanger, bronze headers, and connected pool equipment. Improper water balance, poor flow, incorrect gas pressure, or improper installation can damage the heater and may void warranty coverage.

Customer-Facing Q&A

Q: What is the Jandy JXIQ400NS?
A: It is a Jandy JXiQ ASME natural gas pool and spa heater with 400K BTU class performance, cupronickel heat exchanger, and bronze headers.

Q: What is the SKU?
A: The SKU is JXIQ400NS.

Q: What is the UPC?
A:052337291125

Q: What is the distributor product number?
A: The distributor product number is LAR-15-8529.

Q: What fuel type does this heater use?
A: This model uses natural gas.

Q: Is this a propane heater?
A: No. This is the natural gas model. Propane versions use different model numbers.

Q: How many BTUs is this heater?
A: It is a 400K BTU class heater.

Q: Is this an ASME heater?
A: Yes. This model is ASME compliant for commercial, semi-commercial, and high-demand applications.

Q: Does this heater have a cupronickel exchanger?
A: Yes. This model includes a cupronickel heat exchanger.

Q: Does it have bronze headers?
A: Yes. This ASME model is commonly listed with bronze headers.

Q: What makes JXiQ different from standard JXi heaters?
A: JXiQ adds smart technology such as SMART sensors, self-diagnostics, Bluetooth connectivity, and enhanced service features.

Q: Can this connect to iAquaLink?
A: Yes, when paired with compatible Jandy AquaLink automation.

Q: Is this suitable for saltwater pools?
A: Yes, it is a strong option for properly maintained saltwater systems because of the cupronickel heat exchanger and bronze headers.

Q: Can a homeowner install this heater?
A: No. This product is intended to be purchased and installed by pool professionals.

Q: Are returns accepted on this item?
A: No. Returns are not accepted on this or any electronic equipment.