Home » Hayward | H250FDNASME | Universal H-Series ASME 250,000 BTU – Natural Gas, Low NOx
Hayward | H250FDPASME | Universal H-Series ASME 250,000 BTU - Propane Gas, Low NOx Hayward
Hayward | H250FDPASME | Universal H-Series ASME 250,000 BTU - Propane Gas, Low NOx Hayward

Hayward | H250FDNASME | Universal H-Series ASME 250,000 BTU – Natural Gas, Low NOx

In stock
SKU: H250FDNASME
Length: 33 in Width: 32 in Height: 29.3 in
$4,299.00

The Hayward H250FDNASME Universal H-Series ASME Heater is a commercial-grade, 250,000 BTU natural gas unit engineered for heavy-duty performance, durability, and energy efficiency. Designed and certified specifically for commercial aquatic facilities, this Low NOx heater delivers superior hydraulics, rapid heat-up times, and dependable operation in demanding environments. Built with high-end materials including a Cupro-Nickel Finn Plate™ heat exchanger and bronze header, the H-Series ASME heater provides long-lasting protection, ease of installation, and outstanding heating performance for new or existing commercial pool systems.

Key Features

  • Features a patented Cupro-Nickel Finn Plate heat exchanger with a heavy-duty bronze header, delivering superior corrosion resistance and exceptional heat transfer efficiency.

  • Low NOx compliant burner system provides environmentally friendly operation while maintaining fast heat-up performance and consistent temperature control.

  • Certified for commercial use under ASME requirements and includes an ASME pressure relief valve as standard for enhanced facility safety and compliance.

  • Flexible installation with independent left or right-side electric, water, and gas connections, simplifying integration into existing mechanical rooms.

  • Equipped with large 2" x 2½" CPVC flanged connections to support high-flow commercial hydraulics and reduce backpressure.

  • Electronic lock-out feature protects configuration settings from unauthorized changes, improving operational security in public facilities.

  • Designed for easy serviceability with single front-panel access and straightforward gas valve adjustments to reduce maintenance time.

  • Dual-voltage ready with simple conversion and fuse-protected circuit boards to accommodate diverse commercial electrical setups.

  • Part of a full lineup offering 250k, 400k, and 500k BTU natural gas or propane models, with 500k BTU systems capable of delivering 1 million BTUs in a compact footprint.

  • Optional Texas Heater Kits available for specialized regional compliance and installation requirements.

Product Overview
The Hayward Universal H-Series ASME H250FDNASME Heater is engineered to meet the rigorous demands of commercial pools, spas, fitness centers, hotels, and aquatic facilities. Its patented Cupro-Nickel Finn Plate heat exchanger offers exceptional durability and thermal efficiency, outperforming standard heat exchangers in harsh, chemically intensive water environments. Designed with flexible plumbing and gas connection options, the heater integrates seamlessly into both new construction and retrofit applications.

The advanced Low NOx burner technology ensures environmentally responsible performance without sacrificing heating power, allowing the unit to quickly raise water temperatures even in high-capacity systems. Service professionals benefit from its intuitive design, front-panel access, and protected electronics, making routine maintenance fast and efficient. Supported by Hayward’s reputation for reliability and innovation, the H250FDNASME offers a powerful, long-lasting heating solution that delivers energy efficiency, durability, and commercial-grade performance season after season.