Description

Designed specifically for commercial aquatic facilities, the Hayward Universal H-Series ASME H250FDNASME Natural Gas Heater delivers dependable heating performance, exceptional durability, and industry-leading efficiency. With a 250,000 BTU output, Low NOx emissions, and ASME certification, this commercial-grade heater is ideal for hotels, apartment communities, health clubs, therapy pools, HOA facilities, and other high-use pool and spa environments.

Unlike many commercial heaters that require costly upgrades, the Universal H-Series ASME comes standard with premium components including a patented Cupro-Nickel heat exchanger, low-lead bronze header, and ASME-certified pressure relief valve. These features provide outstanding corrosion resistance, improved hydraulic efficiency, and long-term reliability in demanding commercial applications.

The advanced forced-draft combustion system maintains precise airflow through the combustion chamber, producing low NOx emissions while ensuring consistent heating performance. Certified for installations up to 10,000 feet in elevation, the H-Series ASME is engineered to perform in a wide variety of climates and operating conditions.

Installation flexibility is enhanced with independent left or right-side gas, water, and electrical connections, along with 2″ x 2-1/2″ CPVC plumbing unions designed to accommodate modern commercial plumbing systems. Front-panel access simplifies servicing and maintenance, while electronic temperature lockout controls help prevent unauthorized adjustments.

Whether you’re replacing an existing commercial heater or designing a new aquatic facility, the Hayward Universal H-Series ASME provides the performance, efficiency, and durability required for demanding commercial heating applications.

Features

• 250,000 BTU natural gas commercial pool heater
• ASME certified for commercial installations
• Low NOx emissions compliant with commercial air quality requirements
• Patented Cupro-Nickel heat exchanger for superior corrosion resistance
• Low-lead bronze header for enhanced durability
• ASME-certified pressure relief valve included
• Forced-draft combustion system for efficient operation
• Certified for elevations up to 10,000 feet
• Independent left or right-side gas, water, and electrical connections
• Electronic temperature lockout prevents unauthorized changes
• Fuse-protected circuit board for safe dual-voltage conversion
• Front-panel service access for simplified maintenance
• Non-corrosive feet resist rust on wet equipment pads
• Heavy-duty 2″ x 2-1/2″ CPVC plumbing unions
• 3-Year Commercial Warranty

Specifications

• Manufacturer: Hayward
• Model: H250FDNASME
• Series: Universal H-Series ASME
• Fuel Type: Natural Gas
• BTU Output: 250,000 BTU
• Heat Exchanger: Cupro-Nickel Finn Plate
• Header Material: Low-Lead Bronze
• Certification: ASME Certified
• Emissions: Low NOx
• Plumbing Connections: 2″ x 2-1/2″ CPVC Unions
• Maximum Working Pressure: 125 PSI
• Flow Rate: 25-125 GPM
• Dimensions: 28″ L x 29-1/2″ W x 24″ H
• Weight: 195 lbs.

Applications

• Commercial Swimming Pools
• Therapy Pools
• Hotels Resorts
• Apartment HOA Pools
• Health Clubs Fitness Centers
• Community Aquatic Facilities
• New Construction Retrofit Projects

Product Specifications

BTU: