The Resideo Q4100C9072 Hot Surface Igniter is a 120 VAC silicon carbide replacement component designed for dependable burner ignition in compatible natural gas and LP gas-fired furnaces.
Its heating element produces the intense heat required to ignite burner gas, helping restore consistent heating performance.
Rated for a maximum ambient lead-wire temperature of 392°F (200°C), the igniter features 5-5/16-inch (135 mm) leads and an AMP 1-480699-0 connector housing with 0.093-inch male pins.
Its ceramic insulator incorporates an offset rib for proper positioning within compatible mounting assemblies.
Designed for replacement applications requiring matching electrical connections, lead length, and mounting specifications, the Resideo Q4100C9072 provides a practical solution for furnace ignition repairs.
Confirm equipment compatibility before ordering.
Frequently Asked Questions:
What is the Honeywell-Resideo Q4100C9072?
The Honeywell-Resideo Q4100C9072 is a 120 VAC silicon carbide hot surface ignitor designed for use in compatible gas-fired heating equipment. It is used to ignite natural gas or LP gas during the heating startup cycle.
What material is the Q4100C9072 ignitor made from?
The ignitor uses a silicon carbide heating element designed to reach the temperature required for gas ignition.
Can the Q4100C9072 be used with natural gas and LP gas?
Yes. The Q4100C9072 is suitable for compatible heating equipment that operates on either natural gas or LP gas.
Is the Q4100C9072 a furnace ignitor?
Yes. It is a hot surface ignition component used in compatible gas-fired furnaces and other heating appliances.
How does a hot surface ignitor work?
A hot surface ignitor heats electrically until it reaches a temperature high enough to ignite the gas released by the burner assembly. This allows the heating system to operate without a standing pilot flame.
Is the Q4100C9072 a universal replacement ignitor?
No. Replacement compatibility should be confirmed by checking the original ignitor specifications, including voltage, mounting configuration, lead length, connector type, and appliance requirements.
How do I know if the Q4100C9072 is compatible with my furnace?
Compare the existing ignitor part number and specifications with the Q4100C9072. The voltage, connector, lead length, mounting style, and equipment manufacturer's requirements should match before installation.
Can the Q4100C9072 replace another Honeywell or Resideo hot surface ignitor?
It may replace compatible ignitors with matching electrical and mechanical specifications. Always verify the original equipment part number or manufacturer cross-reference before ordering.
What are common signs of a failed hot surface ignitor?
Common symptoms can include a furnace that begins its startup sequence but fails to ignite the burners, repeated ignition attempts, or visible damage to the ignitor element. Proper diagnosis should be performed before replacement.
Should the Q4100C9072 be installed by an HVAC technician?
Installation should be performed by a qualified HVAC service professional, especially when working with gas-fired equipment and 120 VAC electrical circuits.
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