The Hayward Universal H-Series Propane Gas is a high performance pool water heater that is energy efficient and is installation adaptable. Using a durable Cupro Nickel Heat Exchanger, water flow is managed consistently without the worry of corrosion. This pool heater will reduce the run time of pumps by up to 18% with the water velocity that the H-Series can provide.
| Model | BTU | Low NOx |
| W3H150FDP | 150,000 | Yes |
| W3H200FDP | 200,000 | Yes |
| W3H250FDP | 250,000 | Yes |
| W3H400FDP | 400,000 | Yes |
