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Hayward H-Series Natural Gas Heater 135K BTU W3H135FDN
Hayward H-Series Natural Gas Heater 135K BTU W3H135FDN
A high-performance 135,000 BTU natural gas heater designed for above-ground pools and spas, delivering fast heating, energy efficiency, and easy operation.
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Hayward H-Series W3H135FDN Natural Gas Heater 135K BTU is a high-performance heating solution designed for above-ground pools and spas, delivering rapid, efficient heating with industry-leading hydraulic performance.
With a powerful 135,000 BTU rating, this heater ensures faster heat-up times, making it perfect for maintaining optimal water temperatures even in cooler climates.
Its user-friendly electronic control panel provides intuitive operation, allowing for easy temperature adjustments and hassle-free maintenance.
Engineered for durability, the H-Series heater includes advanced corrosion resistance technology to protect against damage caused by unbalanced water chemistry.
The compact and lightweight design allows for versatile installation, requiring minimal clearance while maximizing heating efficiency.
With its reliable natural gas operation and energy-efficient performance, the Hayward H-Series W3H135FDN is a trusted choice for pool owners looking for long-lasting, high-quality heating.

⭐⭐⭐⭐⭐
Customers love the Hayward H-Series W3H135FDN for its fast heating capabilities and reliable performance.
Users appreciate its energy efficiency, which keeps operating costs low without sacrificing power.
The intuitive electronic control panel makes adjustments simple, even for first-time users.
Many reviewers highlight the durable construction and corrosion resistance, ensuring long-term reliability.

- Powerful Heating: 135,000 BTU output for rapid heat-up times.
- Superior Efficiency: Industry-leading hydraulic performance maximizes energy use.
- Easy Operation: Intuitive electronic control panel for effortless temperature adjustments.
- Corrosion Protection: Designed to withstand unbalanced water chemistry.
- Compact Design: Space-saving size with minimal clearance requirements.
- Durable Construction: Built for long-term reliability in outdoor environments.
- Above-Ground Compatibility: Ideal for above-ground pools and spas.
- Natural Gas Powered: Efficient and cost-effective heating solution.
- Low Environmental Impact: Reduces emissions while maintaining strong performance.
- Quiet Operation: Designed for minimal noise disturbance.

- Heating Capacity: 135,000 BTU/hr
- Fuel Type: Natural Gas
- Voltage: 120/240 Volts
- Water Flow Rate: 20-125 GPM
- Phase: 1
- Hertz: 60 Hz
- Circuit Amps: 5.5 A
- Maximum Fuse Breaker Size: 15 A
- Product Dimensions: 22.6" H x 21.4" W x 30.3" L
- Weight: 100 lbs
- Shipping Weight: 117.5 lbs
- Side Clearance: 12 inches
- Rear Clearance: 6 inches
- Warranty: 2-year parts warranty


Q: How long does it take to heat my pool with this heater?
The heating time depends on your pool size, but with its 135,000 BTU output, it provides rapid heat-up times, significantly reducing waiting periods.
Q: Is this heater suitable for saltwater pools?
Yes, the Hayward H-Series is designed with corrosion-resistant materials to handle saltwater and unbalanced pool chemistry effectively.
Q: Can this heater be used for in-ground pools?
This model is specifically designed for above-ground pools and spas, but Hayward offers other models better suited for in-ground pools.


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