The Pentair EC-462024 MasterTemp 125 High Performance Heater is a compact, energy-efficient natural gas pool and spa heater rated at 125,000 BTU. Designed for bodies of water up to 15,000 gallons, this heater utilizes advanced premixed combustion technology to deliver up to 82% thermal efficiency. Its lightweight, corrosion-resistant enclosure and digital control interface provide reliable heating performance and simplified operation for residential pool and spa installations.

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Key Features

• 125,000 BTU natural gas heater designed for pools and spas up to 15,000 gallons.
• 82% thermal efficiency using premixed gas combustion technology.
• 120/240V electrical configuration with hot surface ignition system.
• Compact design: 31.5" L x 21" W x 23" H for space-efficient installation.
• Lightweight construction at approximately 80 lbs for easier handling.
• Corrosion- and UV-resistant composite enclosure for outdoor durability.
• Advanced digital display/controller for simplified programming and monitoring.
• Certified for low NOx emissions and compliant with modern efficiency standards.

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Product Overview

The Pentair EC-462024 MasterTemp 125 is engineered to provide efficient and reliable heating for smaller residential pools, spas, and aboveground applications. Featuring a fully integrated digital control panel, the unit allows precise temperature adjustment and system monitoring through an easy-to-read rotating display. The heater operates with a hot surface ignition system, eliminating the need for a standing pilot while enhancing operational safety and efficiency.

Built with a compact footprint and corrosion-resistant housing, the MasterTemp 125 is designed for flexible outdoor installation with 1-1/2" plumbing connections. Its premixed combustion system maximizes fuel efficiency while maintaining stable heat output. The heater is suitable for natural gas applications and integrates with standard residential electrical configurations. When properly installed and maintained, the EC-462024 delivers dependable performance, reduced operating costs, and consistent water temperature control for residential pool and spa systems.