Hot Surface Ignitors

Hot surface ignitors are replacement ignition components used in compatible heating equipment to create the heat needed to initiate burner ignition. HVAC technicians, service professionals, and facility maintenance teams use them when maintaining furnaces, boilers, rooftop heaters, infrared burners, unit heaters, water heaters, and other supported heating applications.

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Helpful Buying Guide

Hot Surface Ignitor Buying Guide

Selecting a replacement ignitor starts with identifying the ignition component already installed in the equipment. Compare the replacement reference, operating voltage, element type, mounting details, lead-wire arrangement, included installation items, and package quantity before choosing a compatible option.

Visual Guide

Popular examples in this category

Replacement Hot Surface Igniter - Model IG402KReplacement Hot Surface Igniter - Model IG402KWBB461438Replacement Hot Surface Igniter with GasketReplacement Hot Surface Igniter with GasketWBB461477Replacement Hot Surface Igniter - 2-1/2 in W x 2 in H x 7 in DReplacement Hot Surface Igniter - 2-1/2 in W x 2 in H x 7 in DWBB461499Spark Ignitor Sensor with Style D Mounting Bracket - 2.4 W x 2.2 H x 3.8 DSpark Ignitor Sensor with Style D Mounting Bracket - 2.4 W x 2.2 H x 3.8 DWBB394628
Use Cases

Replace worn ignition components

These products support ignition-system maintenance in compatible heating equipment. Options include direct replacement ignitors, universal igniter kits, a spark ignitor sensor assembly, and multi-kit service packs.

How to Choose

Match the existing component

Use the existing igniter reference when available, such as IG402K, IG104, 41-406, or 41-418. Also compare stated dimensions, 120 VAC requirements where specified, mounting style, lead-wire details, and whether a gasket or mounting adaptors are included.

Applications

Plan around the equipment type

Specified hot surface ignitor options support compatible furnaces, boilers, rooftop heaters or units, infrared burners, unit heaters, water heaters, and, for one universal flat kit, swimming pool heaters.

Additional Info

Choose the right package format

Single-unit packages suit individual replacement tasks. Universal kits can help cover broader replacement needs, while the six-kit service pack provides multiple kits for ignition-related service work.

120 VACSpecified operating voltage

Listed on several furnace ignitors for compatible ignition circuits.

17 secondsSpecified heat-up timing

Several silicon carbide furnace ignitors are designed to reach ignition temperature within this time.

100+Igniter types

The universal silicon nitride kit is intended to replace more than 100 igniter types.

6 kitsService-pack quantity

The universal service pack provides multiple igniter kits in one package.

Comparison Guide

Compare Hot Surface Ignitor Types

Use this overview to focus on the differences represented across the available product types, then verify compatibility against the existing component and equipment requirements.

Product typeWhat to compareRepresentative details
Direct replacement igniterReplacement reference, dimensions, gasket inclusionOptions are identified for IG402K, IG104, 41-406, and 41-418; some include a gasket.
Furnace hot surface ignitor120 VAC requirement, element, leads, mounting detailsSpecified models use silicon carbide elements and may include 4-1/2 in. or 5-1/2 in. leads, mounting adaptors, or Ceramic Block Style C.
Universal kit or service packUniversal design, application range, package quantityOptions include silicon nitride and flat silicon carbide kits, plus a universal six-kit service pack.
Planning Guide

Plan the right fit before choosing

1. Identify the replacement match

Start with the part reference and physical details

A direct replacement may be the clearest choice when the existing component is identified by a matching reference. The range includes replacement options for IG402K, IG104, 41-406, and 41-418. Where a reference is not the deciding factor, compare the stated overall dimensions and the ignition component style with the part being replaced.

  • IG402K and 41-418 replacement options list 3 in. x 6 in. x 3 in. dimensions.
  • The IG104 replacement option lists 2.5 in. x 7 in. x 2 in. dimensions.
  • The spark ignitor sensor assembly lists a Style D mounting bracket and 2.4 in. x 2.2 in. x 3.8 in. dimensions.
2. Compare installation-related features

Review voltage, mounting, leads, and included items

Several furnace ignitors are specified for compatible 120 VAC ignition circuits. Installation-related differences include gasket inclusion, mounting adaptors, ceramic block style, and lead-wire length or insulation. These details help buyers narrow choices for the equipment being serviced.

  • Gasket-equipped options include a replacement igniter with gasket and a furnace ignitor with gasket and 4-1/2 in. lead wires.
  • One furnace ignitor includes mounting adaptors.
  • One 120V furnace ignitor uses Ceramic Block Style C and 4-1/2 in. lead wires.
  • Another furnace ignitor has 5-1/2 in. lead wires.
3. Select a material and pack format

Choose direct replacements, universal kits, or service-pack quantities

Silicon carbide furnace ignitors are available in several configurations, while a universal silicon nitride kit is designed to replace more than 100 igniter types. Universal flat silicon carbide kits support a range of listed heating applications. For teams handling multiple service needs, a six-kit universal service pack groups multiple igniter kits in one package.

  • The universal silicon nitride kit features S13N4 technology and is described as having durability and extended cycle life.
  • Specified silicon carbide furnace ignitors are designed to reach ignition temperature within 17 seconds.
  • The universal flat silicon carbide kit is a one-piece kit.
  • The six-kit service pack measures 4.25 in. wide x 7.81 in. deep x 4.25 in. high.
FAQ

Common questions before buying

What is a hot surface ignitor used for?

It is an ignition component that creates heat to initiate burner ignition in compatible heating equipment.

How can I compare a replacement ignitor?

Compare the existing part reference, stated dimensions, voltage where specified, mounting details, lead-wire arrangement, and included items such as a gasket or adaptors.

Are universal hot surface ignitor options available?

Yes. The range includes a universal silicon nitride kit intended to replace more than 100 igniter types, a universal flat silicon carbide kit, and a universal six-kit service pack.

What heating equipment applications are listed?

Listed applications include compatible furnaces, boilers, rooftop heaters or units, infrared burners, unit heaters, water heaters, and swimming pool heaters for one universal flat kit.

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