Quick answers to questions about ordering, compatibility, and installation.
The Goodman 20165703S Silicon Nitride Hot Surface Igniter represents the advanced "brain" of your furnace's ignition sequence. This critical component is responsible for reaching the extreme temperatures required to safely ignite the gas burners during every call for heat. Engineered for the high-efficiency GMS, GDS, and GMP furnace series, this igniter transitions from a dormant state to glowing heat in seconds. Unlike older silicon carbide models, this silicon nitride upgrade is built for superior physical durability and faster ignition cycles, ensuring your heating system fires reliably even in high-moisture or high-vibration environments common in modern condensing furnaces.
"Take a Picture First"—specifically of the bracket orientation. Many Goodman furnaces have a tight mounting screw location; knowing exactly how the old bracket was angled saves time during re-entry. Most importantly, do not touch the element with your bare hands. Even though Silicon Nitride is more durable than Carbide, oils from your skin can create "hot spots" that lead to premature failure. During your Diagnostic Check, verify that the igniter glows bright orange for at least 5-10 seconds before the gas valve clicks open; if it doesn't glow, check your 120V output from the control board.
Quick answers to questions about ordering, compatibility, and installation.
Yes. Freedom HVAC Supply sells HVAC equipment and parts to contractors, property owners, and qualified DIY installers. Some products may require professional installation based on local codes.
Product pages include specifications and compatibility details. If you’re unsure, our team can help verify fit before you order.
Absolutely. We work with licensed HVAC contractors, installers, and professionals nationwide.
Some HVAC equipment must be installed by a licensed professional to meet code requirements or warranty terms. Always review manufacturer guidelines.
Yes. Our support team can assist with product selection based on your application, space, and installation needs.
Manufacturer installation guides and documentation are included or available upon request for most products.
Most HVAC equipment includes a manufacturer warranty when installed according to guidelines. Warranty terms vary by brand and product.
Yes. We ship HVAC systems and parts throughout the continental United States using trusted freight and parcel carriers.
Larger HVAC equipment ships via freight and should be inspected upon delivery. Delivery details are provided during checkout.
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