WHITE RODGERS (EMERSON ELEC)
WHITE RODGERS 21D64-2 Hot Surface Ignitor LP/NG 120V 15-1/2 in
Universal hot surface ignitor for LP and natural gas furnaces, water heaters and boilers, 15-1/2 inches long with 120 V operation and nitride tip
- Universal replacement covers 150 OEM and competitive ignitors
- Operates on LP or natural gas at 120 V AC
- 15-1/2 inch nitride tip fits furnaces, water heaters and boilers
- Includes two mounting brackets, stripped leads and ceramic wire nuts
- Round tip style simplifies installation across multiple appliances
Universal Replacement Ignitor
The White-Rodgers 21D64-2 is a 120V hot surface ignitor designed for gas-fired forced-air furnaces, water heaters and boilers. It replaces over 150 OEM and competitive ignitors across LP and natural gas systems. The nitride tip and 15-1/2 inch length suit a wide range of heating equipment. Stripped end leads simplify electrical connections during installation.
For Standard Furnace Repairs
This ignitor suits technicians and homeowners replacing a failed hot surface ignitor on compatible 120V appliances. The universal brackets and included hardware cover many mounting configurations. Buyers needing a different voltage, tip geometry or lead connector style should verify specifications before ordering. Systems requiring a proprietary OEM form factor may not accept this universal model.
Mounting Kit Included
Two mounting brackets, a mounting screw and two ceramic wire nuts are supplied in the box. The brackets allow flexible positioning to match existing hole patterns on various equipment. Ceramic wire nuts withstand high temperatures at the connection point. Stripped leads eliminate the need for crimping tools during field replacement.
Highlights
- Universal replacement covers 150 OEM and competitive ignitors
- Operates on LP or natural gas at 120 V AC
- 15-1/2 inch nitride tip fits furnaces, water heaters and boilers
- Includes two mounting brackets, stripped leads and ceramic wire nuts
- Round tip style simplifies installation across multiple appliances
Specifications
| Brand | Emerson |
|---|
Questions about this item
My furnace currently uses a 120 V ignitor — will the 21D64-2 connect directly to the existing wiring?
Yes, it runs on 120 V AC and comes with stripped-end leads plus two ceramic wire nuts for a direct splice to the furnace harness.
The old bracket holes on my burner assembly are worn — can I still mount this ignitor securely?
The package includes two mounting brackets and a mounting screw, giving you multiple hole patterns to match the original OEM locations.
After installation, how do I confirm the nitride tip is heating properly before the gas valve opens?
Watch the ignitor through the sight glass; a bright orange glow across the round nitride tip within the normal pre-purge cycle shows it is reaching ignition temperature.
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