• Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger ERN402-A-8009 parts diagram
  • Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger ERN402-A-8009 parts diagram
  • Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger ERN402-A-8009 parts diagram
  • Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger ERN402-A-8009 parts diagram

Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger ERN402-A-8009 Parts & Diagram

Replacement parts and exploded parts diagram for the Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger (model ERN402-A-8009). Find the part on the diagram, then look for the same number (#) next to each part in the Available Parts list and add the parts you need to your cart.

Parts marked Alternate are compatible replacements from other manufacturers.

Other Parts on This Diagram

These parts are not listed for online purchase. Contact us with the diagram number and part number to order.

  • #15 – 100163221 – Bypass Assembly (Controls & Gauges)
  • Not Shown – 100208454 – Relief VALVE, 3/4", 50 PSI

Please confirm your model number matches your existing equipment before ordering.

GTIN:
SKU: DIAGRAM-ERN402-A-8009
Brand: Lochinvar
$24.02 - $717.90
Tax and shipping are calculated at checkout.

Available Parts & Components

  • Lochinvar Main Burner - 100135300

    Lochinvar Main Burner - 100135300

    SKU: 100135300
    View product
    $93.45
  • Lochinvar K Burner Gasket - 100233587

    Lochinvar K Burner Gasket - 100233587

    SKU: 100233587
    View product
    $34.59
  • Lochinvar Ignition/ Natural Gas Valve VAL3412 152-402 - 100172022

    Lochinvar Ignition/ Natural Gas Valve VAL3412 152-402 - 100172022

    SKU: 100172022
    View product
    $210.25
  • Lochinvar GAS VALVE LP - 100208608

    Lochinvar GAS VALVE LP - 100208608

    SKU: 100208608
    View product
    $278.48
  • Lochinvar Pressure Switch PRS2004K - 100208389

    Lochinvar Pressure Switch PRS2004K - 100208389

    SKU: 100208389
    View product
    $61.92
  • Lochinvar Water Pressure Switch 152-402 - 100166256

    Lochinvar Water Pressure Switch 152-402 - 100166256

    SKU: 100166256
    View product
    $79.80
  • Lochinvar Lochinvar Pressure Switch - 100166258

    Lochinvar Lochinvar Pressure Switch - 100166258

    SKU: 100166258
    View product
    $55.00
  • Lochinvar High Limit Temperature Switch 175^ All Asme - 100148403

    Lochinvar High Limit Temperature Switch 175^ All Asme - 100148403

    SKU: 100148403
    View product
    $67.07
  • Lochinvar High Limit TST2052K - 100208570

    Lochinvar High Limit TST2052K - 100208570

    SKU: 100208570
    View product
    $102.33
  • Lochinvar Inlet Sensor, Controls & Gauges, Cupro-Nickel Heat Exchanger - 100208553

    Lochinvar Inlet Sensor, Controls & Gauges, Cupro-Nickel Heat Exchanger - 100208553

    SKU: 100208553
    View product
    $70.23
  • Lochinvar Loch Immersion Outlet Sensor Lochinvar-Energy Rite Er 152-402 - 100208548

    Lochinvar Loch Immersion Outlet Sensor Lochinvar-Energy Rite Er 152-402 - 100208548

    SKU: 100208548
    View product
    $70.23
  • Lochinvar Sealed Integrated Control - 100286274

    Lochinvar Sealed Integrated Control - 100286274

    SKU: 100286274
    View product
    $717.90
  • Lochinvar Ignitor Spark - 100165932

    Lochinvar Ignitor Spark - 100165932

    SKU: 100165932
    View product
    $76.02
  • Lochinvar Flame Sensor- All Er 152-402 Models - 100165921

    Lochinvar Flame Sensor- All Er 152-402 Models - 100165921

    SKU: 100165921
    View product
    $46.40
  • Lochinvar 120/240V TRANSFORMER - 100277852

    Lochinvar 120/240V TRANSFORMER - 100277852

    SKU: 100277852
    View product
    $75.26
  • Lochinvar Heat Shield Gasket GKT2400 All Asme - 100208106

    Lochinvar Heat Shield Gasket GKT2400 All Asme - 100208106

    SKU: 100208106
    View product
    $38.98
  • Lochinvar Heat Shield Gasket - 100277728

    Lochinvar Heat Shield Gasket - 100277728

    SKU: 100277728
    View product
    $24.02
  • Lochinvar Header Gasket For ALL ASME EnergyRite® Pool Heater - 100233730

    Lochinvar Header Gasket For ALL ASME EnergyRite® Pool Heater - 100233730

    SKU: 100233730
    View product
    $48.60
  • Lochinvar Header Gasket - 100233722

    Lochinvar Header Gasket - 100233722

    SKU: 100233722
    View product
    $34.05
  • Lochinvar Header Gasket - 100290348

    Lochinvar Header Gasket - 100290348

    SKU: 100290348
    View product
    $46.05
  • Lochinvar Combustion Fan FAN3041 ER202-402 - 100145012

    Lochinvar Combustion Fan FAN3041 ER202-402 - 100145012

    SKU: 100145012
    View product
    $432.85
  • Lochinvar FAN GASKET - 100233675

    Lochinvar FAN GASKET - 100233675

    SKU: 100233675
    View product
    $34.88
  • Lochinvar Sight Glass Kit - 100163259

    Lochinvar Sight Glass Kit - 100163259

    SKU: 100163259
    View product
    $63.08
Subtotal $0.00
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Section title

Replacement parts and exploded parts diagram for the Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger (model ERN402-A-8009). Find the part on the diagram, then look for the same number (#) next to each part in the Available Parts list and add the parts you need to your cart.

Parts marked Alternate are compatible replacements from other manufacturers.

Other Parts on This Diagram

These parts are not listed for online purchase. Contact us with the diagram number and part number to order.

  • #15 – 100163221 – Bypass Assembly (Controls & Gauges)
  • Not Shown – 100208454 – Relief VALVE, 3/4", 50 PSI

Please confirm your model number matches your existing equipment before ordering.

Key Features

  • Exploded parts diagram for the Lochinvar EnergyRite Pool Heater 399k BTU/Hr with Cupro-nickel Heat Exchanger (model ERN402-A-8009)
  • 23 replacement parts available to order online
  • Diagram number shown next to every part for easy matching
  • Genuine Lochinvar parts plus compatible alternates
  • Add multiple parts to your cart at once