Experience powerful, reliable heating with the Pentair MasterTemp 400 High Performance Pool & Spa Heater (Model EC-462028). Delivering 400,000 BTUs of heating power, this natural gas heater provides lightning-fast heat-up times for large pools and spas so you can enjoy perfectly warm water whenever you want. Built with advanced pre-mixed combustion technology, it achieves exceptional energy efficiency while keeping emissions low. Its compact design, quiet operation, and digital control panel make it a top choice for both residential and commercial pool owners.

Ideal For

• Large in-ground pools up to 40,000 gallons
• Spas and hot tubs requiring rapid, high-output heating
• Natural gas systems seeking energy-efficient, powerful heating solutions
• Homeowners and professionals demanding fast performance and quiet operation

Key Features

• 400,000 BTU Output: Delivers maximum heating capacity for large pools and spas.
• High-Efficiency Design: Optimized combustion ensures faster heating with lower fuel use.
• Rotating Digital Display: Easy-to-read interface for temperature control and diagnostics from any angle.
• Durable Composite Housing: Rustproof, weather-resistant exterior protects against corrosion and UV exposure.
• Quiet Operation: Engineered for minimal noise, maintaining a peaceful pool environment.
• Low NOx Certified: Meets or exceeds air quality standards for clean, eco-friendly performance.
• Compact Footprint: Space-saving design fits easily into existing equipment pads.
• Easy Service Access: Removable panels and straightforward internal layout simplify maintenance.

Benefits

• Powerful & Fast Heating: Quickly raises water temperature, even for large pools.
• Energy Efficient: Advanced heat transfer and combustion systems maximize efficiency to save on fuel costs.
• Built for Longevity: Premium materials and corrosion-resistant components ensure long service life.
• User-Friendly Controls: Digital display provides precise temperature management and easy troubleshooting.
• Quiet & Compact: Combines strong performance with a small footprint and low operating noise.
• Reliable in All Conditions: Tested for durability in demanding outdoor environments.

The MasterTemp 400 is designed for large in-ground pools up to 40,000 gallons and spas requiring rapid, high-output heating. It’s built for natural gas systems and is fully compatible with saltwater pools thanks to corrosion-resistant materials, ensuring long-term durability in challenging environments.

Why choose the MasterTemp 400? It delivers fast, powerful heating with standout energy efficiency, a quiet, compact design, and rugged reliability that withstands outdoor conditions—making it ideal for both homes and professional installations.