Hayward Universal H-Series Natural Gas and Propane Heaters
Compare Hayward Universal H-Series natural-gas and propane pool heaters by exact model and heating capacity. Select the fuel type that matches your installation; the model options include both fuels. Have your installer confirm the model, gas-supply capacity, equipment-pad layout and installation requirements before ordering.
500K model purchase restriction: Local pickup only or sales to a licensed installer, as noted on this listing. Contact Prime Pool Market to confirm availability in your area, delivery or pickup arrangements, and warranty terms for your selected model.
Get help choosing your heater or call 877-650-7665. Read our pool heater buying guide.
The Hayward Universal H-Series is an energy-efficient, high-performance pool heater designed with installation flexibility and a commitment to both pool professionals and environmentally conscious pool owners. This world-class heater delivers exceptional thermal efficiency and meets stringent California and Texas air quality standards with its low NOx emissions.
Enjoy a warmer pool without skyrocketing fuel costs. The H-Series heater uses advanced hydraulic performance to reduce your circulation pump run time, saving energy and money. Heating time varies with heater size, pool or spa volume, temperature rise, weather and heat loss. Use the model-specific sizing guidance in Hayward’s brochure and have your installer confirm the appropriate heater for your installation. Its innovative design, featuring stainless steel burners and a corrosion-resistant Finn Plate heat exchanger with Cupro Nickel, ensures long-lasting, reliable performance. The Fire Tile combustion chamber traps heat more effectively than traditional insulation, maximizing every BTU.
Equipped with an easy-to-use LED control panel, the Universal H-Series monitors heater performance for maximum comfort with minimal effort. Its dependable electronic ignition system starts with just a push of a button, while the forced draft system eliminates outside weather variables for consistent performance no high-wind stacks required.
Flexible installation options make this heater a universal fit for new or existing equipment pads. With outstanding performance, energy savings, and low emissions, the Hayward Universal H-Series is an excellent choice for you and the environment.
Key Features:
- Industry-leading hydraulic design saves energy by reducing pump run time
- Totally Managed Flow provides superior corrosion and erosion protection ideal for salt-based chlorination systems
- State-of-the-industry Finn Plate heat exchanger with V-groove design for faster heating and longer life
- Fire Tile combustion chamber traps heat for maximum efficiency
- Silicon nitride ignition system ensures reliable operation
- Voltage adaptable to 110V or 220V for simplified installation
- Left and right side junction boxes for convenient high and low voltage connections
- Electronic control/display maintains water temperature and includes self-diagnostics
- Standard Cupro Nickel heat exchanger for excellent saltwater and chemical corrosion resistance
- Patented header bypass design for efficient water flow
- Up to 18% savings by reducing pump run time
- 2″ x 2.5″ CPVC union plumbing connections adapt to larger plumbing for higher efficiency
- Low NOx emissions meet clean air quality standards
Compare the models offered here
Natural-gas and propane options in this listing
| Size (BTU/hr) |
Natural gas |
Propane |
| 150,000 |
W3H150FDN |
W3H150FDP |
| 199,900 |
W3H200FDN |
W3H200FDP |
| 250,000 |
W3H250FDN |
W3H250FDP |
| 399,900 |
W3H400FDN |
W3H400FDP |
Choose the exact model in the selector above for current price and availability. A larger heater can require changes to the gas supply or installation; confirm suitability before ordering.
Manufacturer manuals and reference documents
These are manufacturer series references. Match the model, fuel and manual revision to your equipment. Brochure warranty offers may depend on the sales channel and installation; confirm coverage for your selected W3 model. Installation and service should be handled by a qualified professional.
Manufacturer product page
