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Pentair 460764 Max-E-Therm ASME Commercial Heater, Propane, 400K BTU

SKU 460764

Trade Grade Item. This manufacturer does not allow this product to be sold online.

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Ultra-High ASME® certified performance in a compact, quiet, and eco-friendly design for your commercial application.

  • The bronze header design allows for easy access to the thermal regulator and bypass valve service without the use of special tools.
  • Upgrades to the thermal regulator include a governing stainless steel sleeve for better wear protection.
  • All internal components of the bronze header are now plastic for lightweight, corrosion, and wear protection.
  • The ignition Control Module includes more diaphragm spring force for better gas control and robust operation.
  • A fuller pre-mixed system with a highly efficient air and gas mixture allows for faster heat-up times.
  • Efficiencies up to 84%

Support Documents:


  • Brand: Pentair
  • Application: Indoor, Outdoor, Pool, Spa
  • Cabinet Depth: 31.69 inch
  • Cabinet Height: 30.03 inch
  • Cabinet Width: 25.15 inch
  • Commercial, Residential, or Professional: Commercial
  • Control Type: Digital
  • Weight: 151 pounds
  • Flow Rate Max: 120 gal/min
  • Flow Rate Min: 120 gal/min
  • Frequency Rating (Hz): 60
  • Fuel Type: Propane
  • Green or Energy Efficient Product: True
  • Phase: Single
  • Standards Approvals: CSA Certified, ASME Certified
  • Voltage: 120V, 240V
  • BTU Input: 400000 British thermal unit
  • Tubing Material: Cupro Nickel
  • UPC Code: 788379747589


    • ASME Natural Gas Heater - 250K BTU (460767)
    • ASME Propane Gas Heater - 250K BTU (460768)
    • ASME Natural Gas Heater - 400K BTU (460763)
    • ASME Propane Gas Heater - 400K BTU (460764)

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    Disclaimer: Professional installation is required (not included). Proof of installation by a professional technician is required to validate the factory warranty.

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