The Hayward Universal H-Series 135,000 BTU natural gas heater with OmniX is an above-ground pool and spa heater that pairs leading heating technology with smart connectivity and easy operation. At its center is Hayward Universal Display, which gives a consistent, intuitive control experience across Omni, OmniX, and competitive automation systems. With OmniX embedded intelligence built in, the heater adds enhanced programmability, advanced diagnostics, and seamless remote connectivity. A cupro-nickel heat exchanger protects against corrosion and premature failure from unbalanced water chemistry, and Hayward Totally Managed water flow delivers industry-leading hydraulic performance with fast speed-to-heat. Front-panel-only access keeps service and maintenance simple, and a universal junction box supports left or right electrical installation. It is a Low NOx model that meets clean air quality standards.
Features
- OmniX embedded intelligence for enhanced programmability, diagnostics, and remote connectivity
- Universal Display works across Omni, OmniX, and competitive automation systems
- Cupro-nickel heat exchanger resists corrosion from unbalanced water chemistry
- Totally Managed water flow for industry-leading hydraulics and fast speed-to-heat
- Front-panel-only access for easier, lower-cost service
- Universal junction box allows left or right electrical installation
- Plug-in 120V cord (3 ft) for easy installation
- Low NOx emissions that meet clean air quality standards
Specifications
- Part Number: W3HS135FDN
- Type: Natural gas pool and spa heater with OmniX
- Heating Capacity: 135,000 BTU/hr
- Fuel: Natural gas
- Emissions: Low NOx
- Application: Above-ground pools and spas
- Heat Exchanger: Cupro-nickel
- Automation: OmniX embedded, Universal Display, works with Omni/OmniX/competitive systems
- Voltage: 120V, 60 Hz, single phase, plug-in 3 ft cord
- Circuit: 5.5 amps, 15 amp max breaker
- Access: Front panel only
- Clearances: 12 in sides, 6 in rear
- Shipping Dimensions: 30.6 in x 32.8 in x 33.3 in
- Shipping Weight: 129 lb
- Warranty: 1 year parts








