Hayward | W3H250FDN | Universal H-Series 250K BTU Natural Gas Pool Heater – Low NOx, Energy-Efficient Heating

The Hayward W3H250FDN Universal H-Series 250,000 BTU Natural Gas Pool Heater delivers dependable, energy-efficient heating for in-ground pools and spas. Engineered with low NOx emissions to meet strict air quality standards, it provides powerful heating performance while being environmentally responsible. Its durable cupro-nickel heat exchanger ensures long-lasting resistance to corrosion, even in saltwater and high-flow conditions.

---

Key Features

• 250,000 BTU heating capacity for in-ground pools and spas

• Low NOx emissions to comply with air quality regulations

• Energy-efficient design for reduced operational costs

• Cupro-nickel heat exchanger for superior corrosion resistance and durability

• Rapid heating performance for fast temperature recovery

• Compatible with Hayward automation systems for remote control and scheduling

• Easy-to-use digital LED control panel for precise temperature adjustment

• Polymer header and bypass valve design for improved hydraulic efficiency

• Suitable for various climates, including coastal environments

• Quiet operation for a more enjoyable poolside experience

---

Product Overview

The Hayward W3H250FDN Universal H-Series Natural Gas Pool Heater offers reliable, high-performance heating in an energy-efficient package. With its 250,000 BTU output, it quickly warms your pool or spa, extending your swimming season and enhancing comfort. The low NOx design meets stringent environmental regulations, making it a smart choice for eco-conscious pool owners. Its cupro-nickel heat exchanger provides exceptional corrosion resistance, ensuring durability in demanding water conditions. The advanced polymer header and bypass valve optimize water flow for greater efficiency, while the intuitive digital controls make operation simple. Quiet, efficient, and built to last, the W3H250FDN is ideal for residential pools seeking consistent heating performance.