Pentair MasterTemp 400 Low-NOₓ Natural Gas Heater | EC-462028

Pentair MasterTemp 400 Low-NOₓ Natural Gas Heater

High-output 400,000 BTU heater with low-NOₓ emissions, SKU EC-462028.

Features

• 400,000 BTU/hr — ideal for very large pools or high-demand heating.
• Low-NOₓ certified for reduced environmental impact.
• Rotating digital LCD display — easy to view and control.
• Copper heat exchanger for efficient and reliable heat transfer.
• Electronic hot-surface ignition — fast start-up without a pilot light.
• Compact footprint (21″ × 21″ × 28″) — fits small equipment pads.
• Weather-resistant composite exterior; usable indoors or outdoors.

Description

The Pentair MasterTemp 400 (SKU EC-462028) is built to deliver powerful, reliable heating with a huge 400,000 BTU/hr output. Its pre-mixed combustion system ensures efficient performance, while the copper heat exchanger provides consistent thermal transfer. Certified for low-NOₓ emissions, it’s a greener choice for high-capacity heating. The unit’s rugged composite housing stands up to the elements and supports both indoor and outdoor installs. A rotating digital LCD controller lets you monitor and adjust settings from multiple angles, and its hot-surface ignition delivers fast, reliable starts without a pilot light.

Pro Tip

Install a Smart Bypass Valve Kit with this heater to bypass flow during mild weather — improving efficiency and reducing gas use.

Related Parts

• Pentair MasterTemp 125 High-Performance Pool & Spa Heater – Natural Gas | EC-462024
• Pentair MasterTemp 250 Low-NOₓ Natural Gas Heater | EC-462026
• Pentair INTAKE AIR KIT | 461031
• Pentair Conversion Kit Natural Gas to Propane | 77707-1441

Installation Tips

Must be installed by a qualified, licensed technician. Ensure proper venting per Pentair’s manual. Use a 120/240 VAC supply. For indoor installs, maintain safe clearances and follow all gas-supply guidelines. Refer to the user manual for full safety requirements.

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• Pentair Warranty
  
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• Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
  
• Paramount Warranty
  
• BlueSquare Warranty
  
• Hayward Warranty
  
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Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.