Product Overview

The Hayward Universal H-Series W3H150FDP is a 150,000 BTU propane gas pool and spa heater designed for reliable heating, compact installation, and long-term performance. Built with Low NOx emissions and a cupro nickel heat exchanger, this heater is a strong option for residential pools and spas where corrosion resistance, service access, and efficient heat-up are important.

The Universal H-Series design offers flexible installation with left- or right-side gas, water, and electrical connections, making it easier to fit new or existing equipment pads.

Ideal For

Residential pools and spas needing a compact 150,000 BTU propane heater for pool heating, spa heating, seasonal temperature control, or replacement of an existing gas heater.

Key Features

• 150,000 BTU propane gas pool and spa heater
• Low NOx emissions design
• Cupro nickel heat exchanger for improved corrosion resistance
• Suitable for pool and spa applications
• Forced draft combustion system for consistent heater performance
• Digital LED control panel with temperature display and diagnostics
• Flexible left- or right-side water, gas, and electrical connections
• Compact, low-profile cabinet design
• Compatible with saltwater and traditional chlorine pool systems
• Professional installation recommended

Benefits

The Hayward W3H150FDP provides dependable propane heating for pool and spa applications in a compact equipment pad footprint. The cupro nickel heat exchanger helps provide improved resistance against corrosion and chemically challenging water conditions, while the forced draft system helps maintain consistent combustion performance.

The digital control panel makes operation and troubleshooting easier, and the flexible connection layout helps simplify installation on a wide range of equipment pads.

Specifications

Confirm Before Ordering

Please confirm fuel type, BTU size, gas line sizing, electrical requirements, plumbing configuration, local code requirements, and installation location before ordering. This model is propane gas and is not the natural gas version. Professional installation by a qualified pool heater technician or licensed gas professional is strongly recommended.

Customer-Facing Q&A

Is the W3H150FDP propane or natural gas?
The W3H150FDP is the propane gas version.

How many BTUs is this heater?
This model is rated at 150,000 BTU.

Can this heater be used for both pools and spas?
Yes. The Hayward Universal H-Series W3H150FDP is designed for pool and spa heating applications.

Is this a Low NOx heater?
Yes. This heater is designed with Low NOx emissions and meets applicable clean air quality standards in Low NOx areas.

Does this heater have a cupro nickel heat exchanger?
Yes. Hayward lists the Universal H-Series with a standard cupro nickel heat exchanger for improved corrosion resistance.

Can this be used with saltwater pools?
Yes. The cupro nickel heat exchanger makes it a strong option for saltwater and chemically challenging pool environments when water chemistry is properly maintained.

Does this heater require professional installation?
Yes. Gas pool heaters should be installed by a qualified pool professional or licensed gas technician.