Pentair Mastertemp® 125K BTU

The High-efficiency, High-tech Heater for Pools Up to 15,000 Gallons
 
The affordable MasterTemp 125 heater gives you the energy savings and advanced operating features that were previously only available from much larger heaters. With its revolutionary premixed gas combustion technology, it offers 82% thermal efficiency—the highest of any heater in its category.
 
High-performance, affordable heating with premium features
82% energy efficiency is highest in its class
1.5-in. plumbing—ideal for smaller bodies of water up to 15,000 gallons
Premixed combustion technology for ultra-fast heat-up
Rotating digital display—the first in its price category—provides fast, easy access for programming and monitoring
Certified for low-NOx emissions
Certified for outdoor and indoor-vented installations