Hayward Universal H-Series Above-Ground Natural Gas Low NOx Pool Heater

The Hayward Universal H-Series gas heater delivers high-performance and energy-efficient heating for new or existing above-ground pool and spa systems. Engineered with an industry-leading hydraulic system, it optimizes water flow to reduce circulation pump runtime and deliver energy savings of up to 18% compared to standard models.

Built for durability and clean operation, it features a corrosion-resistant cupro-nickel heat exchanger suited for salt water and chemical exposure alongside environmentally friendly low NOx emissions. A forced-draft combustion system maintains precise airflow without requiring a high-wind stack, ensuring reliable operation and flexible installation.

Key Features

Highlights

• Standard cupro nickel heat exchanger
• Excellent salt water and chemical corrosion resistance
• Cupro nickel heat exchanger water flow management
• Consistent water velocity through all tubes for faster heating
• Patented header by-pass design
• Reduction in pump run-time results in significant cost savings
• 2″ x 2 1/2″ CPVC union plumbing connections
• Forced draft system constantly moves air through the combustion chamber at a precise flow rate, eliminating the need for a high-wind stack
• Low NOx emissions – meets clean air quality standards

Materials & care

Constructed with a heavy-duty cupro-nickel heat exchanger engineered for superior resistance to salt water and chemical corrosion. Regularly inspect union connections and clear debris around ventilation points to maintain optimal airflow.

Compatibility

Compatible with new and existing above-ground pool and spa installations utilizing natural gas connections and standard 2″ or 2.5″ CPVC plumbing.

What’s included

• 1 x Universal H-Series Heater Unit (Natural Gas)
• 1 x Built-in Digital Control Panel (OmniX-enabled)
• 1 x OmniX Smart Control System (integrated)
• 1 x Cupro-Nickel Heat Exchanger (pre-installed)
• 1 x Gas Valve & Burner Assembly (factory installed)
• 1 x Water Connection Ports (2” / 2.5”)
• 1 x Electrical Connection Components / Terminal Block
• 1 x Drain Valve / Plug Assembly
• 1 x Front Access Panel (pre-installed)
• 1 x Owner’s Manual & Installation Guide