MasterTemp 125 Natural Gas Heater with Cord

The Pentair MasterTemp 125 is a natural gas pool and spa heater rated at 125,000 BTU input, sized for pools and spas up to roughly 15,000 gallons. This version includes a plug-in power cord for 120V connection rather than a hardwired setup.

Key Features

• 82% thermal efficiency, pre-mixed combustion
• Rotating digital LCD display
• Low NOx certified
• Corrosion- and UV-resistant cabinet
• 3/4" gas connection

Compatibility

• Pools and spas up to approximately 15,000 gallons
• Does not fit applications requiring a hardwired connection (use model 461058 instead)

What's Included

• 120V/115V plug-in electrical power cord

A flashing ignition LED indicates the fault type before shutdown: 1 flash signals an airflow fault, 2 flashes flame-but-no-call-for-heat, and 3 flashes ignition lockout.

Venting this heater into a masonry chimney without a code-compliant liner is a fire hazard, and attaching the vent adapter with drilled holes or screws instead of the specified adhesive risks carbon monoxide leakage.