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Hayward

Universal H-Series

Gas Heater

The Hayward Universal H-Series is a gas-fired pool heater available in sizes from 150,000 to 500,000 BTU/hr. It features forced draft combustion, electronic ignition, and is available in natural gas and propane with standard and ASME configurations.

Hayward Universal H-Series Gas Heater
150,000 - 500,000 BTU/hr
BTU Range
Natural Gas or Propane
Gas Type
120/240 VAC, 60 Hz
Voltage

Specifications

Heating
BTU Range150,000 - 500,000 BTU/hr
Gas TypeNatural Gas or Propane
Gas Supply Pressure4-14 in water column
Electrical
Voltage120/240 VAC, 60 Hz
Physical
Inlet Size2 in or 2.5 in PVC
Outlet Size2 in or 2.5 in PVC
Certifications
UL ListedYes
CSA CertifiedYes

Pros & Cons

Pros

  • Widest BTU range in the industry (150K-500K)
  • Both natural gas and propane models
  • ASME certified models available
  • UL and CSA listed
  • Forced draft combustion

Cons

  • 120/240V wiring required
  • Larger footprint than some competitors

Error Codes & Troubleshooting

IF
Ignition failure — no flame detected
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AO
Temperature limit string open
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LO
Temperature limit switch open
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PS
Pressure switch open — low water flow
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SF
Stack flue sensor fault
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