Robertshaw
Robertshaw 41-406 Hot Surface Ignitor 120V
Universal hot-surface igniter with a flat silicon-carbide tip, 11-inch leads and 392 °F insulation for 120 V AC furnaces
- TypeLearning Thermostats
- Universal replacement fits many systems
- Silicon carbide element resists thermal stress
- 120 V AC input matches standard supply
- 392 °F lead insulation withstands high heat
- 11 in lead length eases installation
Product Identity
The Robertshaw 41-406 is a 120 V AC hot surface ignitor designed as a universal replacement for gas-fired heating systems. It uses a silicon carbide heating element and installs via hardwired connections with an 11 in lead length.
What the Universal Design Changes
A flat-tip probe measuring 2 in fits a wide range of burner assemblies, reducing the need to match exact OEM part numbers. The lead insulation is rated to 392 °F, so the wiring withstands the high temperatures found inside furnace cabinets.
Who This Suits and Who It Does Not
HVAC technicians and homeowners repairing a failed ignitor on compatible 120 V equipment will find this a direct, plug-and-play solution. Buyers whose systems require a different voltage, a non-flat tip geometry, or a longer lead wire should look for a model that matches those specifications.
Highlights
- Universal replacement fits many systems
- Silicon carbide element resists thermal stress
- 120 V AC input matches standard supply
- 392 °F lead insulation withstands high heat
- 11 in lead length eases installation
Specifications
| Brand | ROBERTSHAW |
|---|---|
| Type | Learning Thermostats |
Questions about this item
How often does the silicon-carbide heating element need replacement?
The ignitor is a universal replacement part; silicon-carbide elements typically last several heating seasons before requiring a new unit.
What limits continuous operation first — lead-wire temperature or probe length?
Lead-wire insulation is rated to 392 Degrees F, so sustained heat at the 2 in probe usually reaches that limit before probe length becomes a factor.
Does the hard-wired 120 V AC connection run hot or noisy during all-day cycles?
The flat-tip silicon-carbide ignitor operates silently; heat is concentrated at the 2 in probe while the 11 in leads stay within the 392 Degrees F insulation rating.
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