Description
Hayward W3HS400FDN Universal H-Series 400,000 BTU Natural Gas Pool Heater with OmniX
The Hayward W3HS400FDN Universal H-Series 400,000 BTU Natural Gas Pool Heater with OmniX delivers fast, reliable heating for residential inground pools and spas. Its 400,000 BTU output, Low NOx combustion system, and smart OmniX controls make it a strong choice for pool owners who want efficient performance and modern equipment monitoring.
Designed for both new installations and replacement applications, the Universal H-Series platform features a compact footprint, front-service access, and flexible plumbing connections that can help simplify installation on many existing equipment pads.
Key Features
- 400,000 BTU natural gas pool and spa heater
- OmniX smart controls and advanced diagnostics
- Low NOx combustion technology
- Digital temperature controls
- Compact Universal H-Series design
- Front-panel service access
- Designed for residential inground pools and spas
- Suitable for new installations and heater replacements
Why Choose the W3HS400FDN?
This model is ideal for smaller inground pools, spas, and pool-spa combinations where quick heat-up time is important. Natural gas heating provides faster temperature recovery than most heat pumps, making it well suited for occasional heating, cooler climates, and spa use.
Specifications
- Manufacturer: Hayward
- Model: W3HS400FDN
- Series: Universal H-Series with OmniX
- Heating Capacity: 400,000 BTU
- Fuel Type: Natural Gas
- Application: Inground pools and spas
- Emissions: Low NOx
Important Installation Note
Pool heaters require proper gas supply, electrical connections, ventilation, and plumbing. Installation should be completed by a qualified pool or HVAC professional in accordance with local codes and Hayward requirements.