The Hayward Universal H-Series Natural Gas Pool Heater (H250FDN) is a 250,000 BTU Low NOx heater for residential in-ground pools, spas and pool/spa combinations. A cupro-nickel heat exchanger resists corrosion and erosion, including in salt-chlorinated pools with properly maintained water chemistry. Left- or right-side utility connections make it well suited for replacements and new installs.
Key Features
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250K BTU Input: Dependable heating and fast recovery for pools and spas.
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Cupro-Nickel Heat Exchanger: Enhanced corrosion and erosion resistance; salt-pool friendly.
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Low NOx: Cleaner emissions for use in many low-emission regions.
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Digital Controls: Easy temperature adjustment with self-diagnostic display.
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Universal Installation: Gas and electrical connections on either the left or right side.
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Reliable Ignition: Silicon nitride electronic ignition with no standing pilot.
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Efficient Design: FireTile combustion insulation and a hydraulic design that helps reduce pump run time.
Specifications
| Brand |
Hayward |
| Product Line |
Universal H-Series |
| Part Number |
H250FDN |
| Alternate Model |
W3H250FDN |
| BTU |
250,000 input |
| Fuel Type |
Natural gas |
| Thermal Efficiency |
Approx. 83% |
| Voltage |
110/220V (120/240V), 60 Hz, single phase |
| Gas Connection |
3/4" |
| Water Connections |
2" x 2.5" CPVC unions |
| Flue Diameter |
4" |
| Cabinet (W x D x H) |
Approx. 28" x 29.5" x 24" |
| UPC |
610377167796 |
What's Included
- H250FDN heater with digital control panel
- 2" x 2.5" CPVC union connection components
- Manufacturer installation documentation
Before You Order
Confirm your fuel is natural gas (propane uses a different model), your gas supply is sized for 250,000 BTU, and venting and combustion air meet local gas codes. Gas line, venting, wiring and valves are sold separately; installation should be done by a licensed gas technician or pool professional. Questions? Call 855-677-7796 or contact us with your model and part number.
