Lennox 3G-OTH-78393 — Compatible Parts & Alternatives

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13 compatible products found for Lennox 3G-OTH-78393. All items ship worldwide via DHL.

Also known as:12J99LENNOX

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LENNOX

LENNOX Ignition Control 12J99

SKU: 3G-OTH-78393

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Lennox 3G-OTH-78393 — Compatible Parts & Alternatives

Cross-reference match for “12J99”

LENNOX Ignition Control 12J99

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Lennox Replacement flame sensor for gas-fired heating equipment. Detects burner flame presence via flame rectification current to confirm ignition. Used in furnaces and boilers to ensure safe gas valve operation.

Lennox Replacement pressure switch for HVACR systems. Monitors air or gas pressure to verify proper airflow or draft before burner ignition. Used in furnaces, boilers, and rooftop units to support safe operation.

Lennox Rollout switch for use in HVAC systems. Safety device that shuts off gas supply if flames or hot gases escape the combustion chamber. Suitable for residential and commercial heating equipment.

Lennox Pilot assembly for gas-fired heating equipment. Provides the ignition flame for main burner startup in furnaces and boilers. Direct replacement part for compatible Lennox units.

Lennox Flame sensor for gas-fired HVAC systems. Detects burner flame presence and signals the control board to maintain gas valve operation or shut off gas when no flame is sensed. Replacement component for Lennox furnaces and boilers.

Lennox Non-fusible disconnect switch for HVACR systems. Provides manual isolation of electrical power during maintenance or service. Complies with electrical codes for technician safety.

Lennox Hot surface igniter for gas-fired furnaces and heating systems. Provides high-temperature heat to ignite the gas burner in residential and light commercial HVAC applications. Direct replacement for compatible LENNOX furnace models.

Lennox Electric heat kit for adding electric heating capability to compatible HVAC systems. Used as a heater accessory in residential and light commercial applications, such as heat pump systems or air handlers. Manufacturer part number 99M70.

Lennox Direct spark igniter for gas-fired heating systems. Generates a high-voltage spark to ignite the gas burner directly, replacing standing pilot light assemblies. Used as a replacement HVACR control component in furnaces and heating equipment.

Lennox Pressure switch for HVACR systems, used to monitor air or gas pressure in heating and cooling equipment. Ensures safe operation by verifying proper airflow or combustion pressure. Commonly applied in furnaces, boilers, and rooftop units.

Lennox The LENNOX 13H13 is a replacement thermostat designed for use in heat pump systems. It controls heating and cooling cycles in residential or light commercial HVACR applications. This thermostat is intended for conversation heat pump setups, providing temperature regulation.

Lennox Ignition control board for gas furnaces and heating systems. Manages the ignition sequence, monitors flame presence, and controls gas valve operation to ensure safe burner startup. Used as a replacement component when the original control board fails.