The new Hayward H400FDN Universal H-Series is a totally new gas heater design that combines industry leading hydraulic performance, environmentally responsible low-NOx emissions and superior reliability with the installation flexibility to easily adapt to new or existing pools and spas for what just might be the most perfect combination of features and benefits ever offered in an in-ground pool and spa heater. Hayward's H400FDN Universal H-Series gas heater adapts to each pool and spa owner's needs to make life a little more flexible and convenient.
- 400,000 BTU Input
- Standard cupro nickel heat exchanger
- Excellent salt water and chemical corrosion resistance
- Exclusive "Totally Managed" cupro nickel heat exchanger water flow
- Same water velocity through all tubes for faster heating
- Patented header by-pass design
- Up to 18 percent savings by reducing pump run-time
- 2in x 2 1/2in CPVC union plumbing connections
- Common union for installation or service, adapts to larger plumbing recommended for greater efficiencies
- Low NOx emissions - meets clean air quality standards
