Pentair MasterTemp 250  250,000 BTU

Pentair MasterTemp Natural Gas Pool Heater.

Ideal for In and Above Ground Pools!

Big Performance in a Compact, Eco-Friendly Package

Stop waiting days for your pool to warm up. The Pentair MasterTemp 250 is a high-performance "Eco Select" heater that delivers commercial-grade heating speed in a unit small enough to fit almost anywhere.

With a massive 250,000 BTU output, this unit is perfectly sized for heating In-Ground and Above-Ground Pools up to 40,000 Gallons.

Why Choose MasterTemp? (82% Efficiency)

Older pool heaters waste heat, sending your money right out the exhaust pipe.

• Eco Select Certified: The MasterTemp 250 boasts a Thermal Efficiency rating of 82%, the highest in its class. This means more heat goes into your water and less into the air, significantly lowering your monthly gas bill.

• Low NOx Emissions: Engineered for clean combustion, making it environmentally friendly and compliant with strict air quality standards (essential for California and Texas residents).

Engineered for Durability

Pentair has solved the #1 killer of pool heaters: Condensation & Scale.

• Thermostatic Bypass Valve: This internal system controls the flow to minimize condensation. By preventing condensation, it stops the formation of calcium scale and rust inside the heat exchanger, ensuring the heater maintains its efficiency for years.

• Bronze Header System: Built with tough, corrosion-resistant bronze headers and union connection fittings for a long lifespan, even in harsh pool environments.

Ignition: Direct Spark (Automatic)

MasterTemp 250 

Manufactured by Pentair, Northern Lights Group now offers the most advanced natural gas heater available on the market. 

This heater is a compact, self-contained unit with an output of 250,000 BTU's. With a thermal efficiency rating of 82%, the MasterTemp 250 is the most efficient heater in it's class. This high efficiency rating keeps operating cost low by directing more of the heat it produces into your pool or hot tub instead of the outside air.  Recommended for heating up to 40,000 Gallon pools.

MasterTemp features a patented thermostatic bypass valve which minimizes condensation-related calcium scaling and corrosion. Minimizing condensation-related calcium buildup maintains heat transfer efficiency, quietness, and dependable operation. This heater's design includes a bronze header system that prolongs life, and union connection fittings for fast draining and easy winterization.