The Pentair MasterTemp 300 (Model 460734) is a high-efficiency gas pool and spa heater designed for residential and light commercial use. It operates on natural gas and provides a 300,000 BTU heat output for fast water heating and temperature maintenance.
The unit is designed with a compact footprint suitable for limited equipment pad space. It features a corrosion-resistant composite exterior and a digital rotating display for improved visibility and control access. The system uses electronic ignition and a pre-mix combustion process for efficient startup and operation.
The heater is equipped with built-in safety controls, including pressure and temperature cutoffs, and supports integration with pool automation systems. It is designed for low NOx emissions and energy-efficient operation compared to traditional gas heaters.
Specifications:
- Model: Pentair MasterTemp 300
- Part Number: 460734
- Heat Output: 300,000 BTU
- Fuel Type: Natural Gas (LP version: 460735)
- Heater Type: Gas pool and spa heater
- Electrical: 120/240V, single-phase
- Weight: Approx. 136 lbs
- Heat Exchanger: Copper or cupro-nickel (optional corrosion-resistant version)
- Emissions Rating: Low NOx compliant
- Ignition System: Electronic ignition (no standing pilot)
Features:
- Compact design for space-limited installations
- Digital rotating control display
- Quiet operation
- Electronic ignition system
- Built-in safety pressure and temperature controls
- Compatibility with automation systems
Typical Applications:
- Residential in-ground pools (approximately 20–40 ft)
- Spa and pool combination systems
- Applications requiring rapid heating and temperature control







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