THE HIGH-EFFICIENCY, HIGH-TECH HEATER FOR POOLS UP TO 15,000 GALLONS.

The MasterTemp 125 Heater provides energy-saving and advanced operating features that were only available from much larger heaters. With its revolutionary pre-mixed gas combustion technology, the MasterTemp 125 Heater offers 82% thermal efficiency, the highest in its class. The advanced LCD/controller provides more information and better control.

• Now, with smart connectivity and energy-saving automation, it’s easier than ever to get the pool warm and ready whenever needed.
• New automation functionality and ignition control module with flame strength sensor for always optimized performance.
• MasterTemp 125 Heater is certified for low NOx emission.
• The multi-position top panel allows the digital display to be re-positioned for convenient operation.
• A tough, rustproof exterior handles the heat and weathers the elements.
• Certified for outdoor and indoor installations.
• 1-1/2 in. Plumbing connection—ideal for smaller bodies of water, including aboveground pools, spas, and inground pools up to 15,000 gallons
• Available in natural gas or propane gas
• Lightweight: 80 lbs.—easy to handle and ship
• 3/4 in. gas line up to 50 ft. from the source
• Optional Smart Heater Bypass valve control diverts water flow when the heater isn’t needed to help save up to 35% in yearly operational costs.*

Support Documents: 

• MasterTemp 125 High-Performance Heater
• MasterTemp 125 Heater Installation and User Guide
• MasterTemp 125 Heater Burner System
• MasterTemp 125 Heater Electrical System
• MasterTemp 125 Heater Water System
• How to Size a Pool Heater: BTU Quick Reference Chart

Configurations:

• Natural Gas without Cord - 125 BTU (461058)
• Natural Gas with Cord - 125 BTU (461059)
• Propane without Cord - 125 BTU (461060)
• Propane with Cord - 125 BTU (461061)

Accessories (*sold separately):

• Air Intake Kit (474845)
• Smart Heater Bypass Kit (462048)