Description
Pentair MasterTemp 125 High-Performance Pool & Spa Heater (Natural Gas)
Efficient 125,000 BTU natural gas heater with 82% thermal efficiency, SKU EC-462024.
Features
- 82% thermal efficiency — among the highest in its class.
- Compact, lightweight 80 lb design for easier installation.
- Rotating digital LCD display/controller for easy monitoring and control.
- Premixed gas combustion for rapid heat-up.
- Low-NOₓ emissions; certified for indoor and outdoor installations.
- 1½″ plumbing connections suit many standard pool setups.
Description
The Pentair MasterTemp 125 (SKU EC-462024) is designed to efficiently heat pools or spas up to ~15,000 gallons. Its advanced premixed gas-combustion system enables 82% thermal efficiency, reducing gas usage without sacrificing performance. Housed in a UV- and corrosion-resistant enclosure weighing only 80 lbs, it’s easier to maneuver and install compared to bulkier heaters. The rotating digital LCD controller provides quick access to programming and diagnostics, while direct spark ignition ensures fast, reliable startup.
Pro Tip
Planning to switch to propane later? Use the MasterTemp 125 NG-to-LP Conversion Kit | 461063 for a smooth and safe conversion.
Related Parts
- Pentair MasterTemp 125 NG-to-LP Conversion Kit | 461063
- Pentair MasterTemp Heater 250,000 BTU Natural Gas Low Nox | EC-462026
- Pentair MasterTemp High Performance Pool and Spa Heaters 400NA (Natural Gas) | EC-462028
Installation Tips
Must be installed by a qualified technician. For indoor installs, use a carbon monoxide detector nearby. Requires 120/240 VAC power and proper gas line sizing per local codes. See manual for full safety and venting requirements.
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