Description

Hayward Universal H-Series 250,000 BTU Natural Gas Pool Heater with Cupro Nickel Heat Exchanger

Model: W3H250FDN
Replacement for: H250FDN
Fuel Type: Natural Gas
BTU Rating: 250,000 BTU
For Inground Pools and Spas

The Hayward Universal H-Series 250,000 BTU Natural Gas Pool and Spa Heater delivers fast, reliable heating performance for inground pools and spas. Built with a durable cupro nickel heat exchanger, this heater is designed for long-lasting comfort, energy efficiency, and added protection against corrosion caused by unbalanced water chemistry.

This low-NOx natural gas heater is a great choice for pool owners who want dependable heating, easy operation, and environmentally responsible performance.

Best For

• Inground pools and spas where natural gas is available
• Pools and spas requiring low-NOx emissions
• Pool owners who want fast heating performance
• Applications where corrosion resistance is important
• Replacing Hayward model H250FDN

Key Features

250,000 BTU Natural Gas Heater
Provides powerful heating performance for inground pools and spas.

Cupro Nickel Heat Exchanger
Hayward’s cupro nickel heat exchanger offers excellent durability and helps protect against corrosion, especially in salt-based pools, high-flow conditions, or pools with aggressive water chemistry.

Low-NOx Emissions
Designed to meet low-NOx air quality standards, making it a more environmentally responsible choice for pool and spa heating.

Fast Heating Performance
The Universal H-Series is designed to heat quickly, helping you spend less time waiting and more time enjoying your pool or spa.

Energy-Saving Hydraulic Design
Efficient hydraulic performance helps reduce circulation pump run time, which can help save energy.

Forced Draft Combustion System
The forced draft system moves air through the combustion chamber at a controlled rate, helping maintain consistent heating performance even in outdoor weather conditions such as wind.

Easy-to-Use Digital Control Panel
The intuitive LED digital control panel provides temperature readout, diagnostics, and electronic temperature set-point lockout for simple operation, service, and maintenance.

Flexible Installation
The Universal H-Series is designed for easier installation with gas and electrical connections available on either the right or left side.

Built for Reliable Pool and Spa Comfort

An efficiently heated pool or spa gives you more control over your swim season and helps keep the water comfortable when you want to use it. The Hayward Universal H-Series Natural Gas Heater combines fast heating, durable construction, low-NOx operation, and user-friendly controls for season-after-season performance.

Important Sizing Note

Proper heater sizing depends on several factors, including pool size, spa size, desired temperature rise, wind exposure, whether a pool cover is used, plumbing, and gas line capacity.

Need help with sizing? Call Mark before ordering: 734-675-8260

Product Details

• Brand: Hayward
• Series: Universal H-Series
• Model: W3H250FDN
• Replaces: H250FDN
• BTU Rating: 250,000 BTU
• Fuel Type: Natural Gas
• Application: Inground pools and spas
• Heat Exchanger: Cupro nickel
• Emissions: Low-NOx