Pentair NG IID MasterTemp 125 Heater W/ Cord 125K BTU

Pentair MasterTemp® 125K BTU Heater – Natural Gas (Model PUR-15-0781 / 461059)

High-Efficiency, High-Tech Pool and Spa Heating for Smaller Applications

The MasterTemp® 125 sets a new standard for performance, efficiency, and convenience in compact pool heaters. Designed specifically for smaller bodies of water—such as aboveground pools, spas, and in-ground pools up to 15,000 gallons—this heater delivers an impressive 125,000 BTU of heating power with 82% thermal efficiency, the highest in its class.

Utilizing advanced pre-mixed combustion technology, the MasterTemp 125 provides ultra-fast heat-up while keeping energy costs low. Its digital display/controller offers precise temperature control and user-friendly operation—unmatched in the category. Weighing just 80 lbs and featuring a compact footprint (31.5" L x 21" W x 23" H), it installs easily with 1½″ plumbing and requires minimal space.

Certified for low NOx emissions and part of Pentair’s Eco Select® line, the MasterTemp 125 is an environmentally responsible choice, offering clean, quiet, and efficient performance year-round.

🔧 Key Features:

• 125,000 BTU heating capacity

• 82% energy efficiency—best in its class

• Digital LCD display with temperature control and system status

• Ideal for pools and spas up to 15,000 gallons

• Compact and lightweight (only 80 lbs) for fast, low-cost installation

• Low NOx certified for environmentally friendly operation

• 1½″ plumbing connections

• Natural gas fuel type (propane model also available)

• 120/240V electrical input

• ¾" gas line (up to 5' from source)

PUR-15-0781
461059 125K BTU NG IID
MASTERTEMP 125 HEATER W/ CORD