Skip to content
Australia's Pool Heater Specialists

Pentair Mastertemp 125 Gas Heater Parts

Pentair Mastertemp 125 heater parts are used to repair and maintain Mastertemp 125 gas heaters.

This collection includes genuine and compatible Mastertemp 125 parts to restore performance and extend heater life.

If your heater is not working correctly, view our troubleshooting guides or return to our Pentair Mastertemp heater parts hub.

Read More About Mastertemp 125 Heater Parts

Common Parts

  • Thermistors
  • Ignition modules
  • Gas valves
  • Control boards
  • Pressure switches

Common Faults

  • Ignition failure
  • Sensor faults
  • Lockout issues

FAQs

What parts fail in Mastertemp 125?
Thermistors and ignition modules are common failures.

Can I replace parts myself?
Only minor components should be replaced without a technician.

 

  • Save 9%
    Sale

    Pentair Mastertemp Main Control Board PCB - Membrane and PCB | Max E Therm | Turbotemp

    $645.00
    $645.00
    $645.00
    $590.00
    $590.00
    $590.00

    Genuine Pentair Mastertemp Main Control Board PCB - Membrane and PCB | Max E Therm | Turbotemp This genuine Pentair replacement control board and m...

    View full details
    $645.00
    $645.00
    $645.00
    $590.00
    $590.00
    $590.00
    Save 9%
    Sale
  • Mastertemp Turbotemp Pressure Relief Valve Kit View
    Mastertemp Turbotemp Pressure Relief Valve Kit

    Pentair Mastertemp TurboTemp Pressure Relief Valve Kit

    $329.00
    $329.00
    $329.00
    $329.00

    Pentair MasterTemp TurboTemp Pressure Relief Valve Kit The Pentair MasterTemp TurboTemp Pressure Relief Valve Kit is designed for use with selected...

    View full details
    $329.00
    $329.00
    $329.00
    $329.00

  • Pentair Mastertemp Manifold Kits 125 200HD 300HD 400HD

    $348.15
    $348.15
    $660.00 - $990.00
    $660.00
    $660.00

    Need to replace the heater manifold kit for your Pentair Mastertemp Pool or spa gas heater? We have these manifold kits to suit the Mastertemp 125,...

    View full details
    $348.15
    $348.15
    $660.00 - $990.00
    $660.00
    $660.00
    View Options

  • Gas Pool Heater Flue Adaptor 90° Elbow

    $170.00
    $170.00
    $170.00
    $170.00

    Looking for a flue adaptor for your Astralpool IXI or Zodiac JXI gas pool heater? We have the 90° flue adaptors which suit the Astralpool IXI200 an...

    View full details
    $170.00
    $170.00
    $170.00
    $170.00
    View Options
  • AstralPool IXI Gas Heater IXI Thermal Regulator Valve Kit (Trv)

    Pentair Mastertemp Heater Thermal Regulator

    $175.00
    $175.00
    $175.00
    $175.00

    Looking for a thermal regulator on your Pentair Mastertemp Pool or spa gas heater? We have the thermal regulator's to suit the Mastertemp 125, 200H...

    View full details
    $175.00
    $175.00
    $175.00
    $175.00
    View Options
  • Save 12%
    Sale

    Pentair MasterTemp Pool Heater Top | Max-E-Therm | Turbotemp

    $599.00
    $599.00
    $599.00
    $525.00
    $525.00
    $525.00

    Pentair MasterTemp Pool Heater Top | Max-E-Therm | Turbotemp Replace your cracked, weathered, or broken heater top with this genuine Pentair replac...

    View full details
    $599.00
    $599.00
    $599.00
    $525.00
    $525.00
    $525.00
    Save 12%
    Sale

  • Pentair Mastertemp Heater Thermal Regulator Kit

    $265.00
    $265.00 - $275.00
    $265.00
    $265.00

    Need to replace the thermal regulator on your Pentair Mastertemp Pool or spa gas heater? We have the thermal regulator kits to suit the Mastertemp ...

    View full details
    $265.00
    $265.00 - $275.00
    $265.00
    $265.00
    View Options

  • Pentair Mastertemp Heater Flue Stack Sensor

    $225.00
    $225.00
    $225.00
    $225.00

    Need to replace the Flue Stack Sensor on your Pentair Mastertemp Pool or spa gas heater? We have the flue stack sensors to suit the Mastertemp 125,...

    View full details
    $225.00
    $225.00
    $225.00
    $225.00

  • Pentair Mastertemp Heat Exchanger 125 200HD 300HD 400HD

    $1,600.00
    $1,600.00 - $2,800.00
    $1,600.00
    $1,600.00

    Need to replace the heat exchanger for your Pentair Mastertemp Pool or spa gas heater? We have the heat exchangers to suit the Mastertemp 125, 200H...

    View full details
    $1,600.00
    $1,600.00 - $2,800.00
    $1,600.00
    $1,600.00
    View Options

  • Pentair Mastertemp Gas Pool Heater Service Panel - USED

    $125.00
    $125.00
    $125.00
    $125.00

    This is a used Mastertemp Gas Pool Heater service panel (front). The part can be used on the Mastertemp 200, 300 and 400 gas pool heaters. This par...

    View full details
    $125.00
    $125.00
    $125.00
    $125.00

  • Pentair Mastertemp Gas Heater Top

    $550.00
    $550.00
    $550.00
    $550.00

    Need to replace the heater top of your Pentair Mastertemp Pool or spa gas heater? We have the heater tops to suit the Mastertemp 125, 200HD, 300HD ...

    View full details
    $550.00
    $550.00
    $550.00
    $550.00

  • Pentair Mastertemp Gas Heater Service Panel

    $365.00
    $365.00
    $365.00
    $365.00

    Need to replace the heater service panel (front or rear) Pentair Mastertemp Pool or spa gas heater? We have these service panels to suit the Master...

    View full details
    $365.00
    $365.00
    $365.00
    $365.00
  • Save 29%
    Sale

    Mastertemp 400HD Gas Pool Heater Top with Digital PCB - USED

    $350.00
    $350.00
    $350.00
    $250.00
    $250.00
    $250.00

    This is a used Mastertemp 400HD Gas Pool Heater Top complete with digital thermostat PCB touchpad. The part can be used on the Mastertemp 200, 300 ...

    View full details
    $350.00
    $350.00
    $350.00
    $250.00
    $250.00
    $250.00
    Save 29%
    Sale
  • Save 29%
    Sale

    Mastertemp 300HD Gas Pool Heater Top with Digital PCB - USED

    $350.00
    $350.00
    $350.00
    $250.00
    $250.00
    $250.00

    This is a used Mastertemp 300HD Gas Pool Heater Top complete with digital thermostat PCB touchpad. The part can be used on the Mastertemp 200, 300 ...

    View full details
    $350.00
    $350.00
    $350.00
    $250.00
    $250.00
    $250.00
    Save 29%
    Sale