Testing a Furnace’s Hot Surface Ignitor
Posted on:
Member Exclusive Content
Login & continue reading at acca.org »
Every year, a large percentage of furnaces break due to simple things. Several components in the furnace are prone to failure, one of which is the hot surface ignitor (HSI). This blog aims for technicians and HVAC professionals to learn how to diagnose and test a gas furnace’s hot surface ignitor. Testing and diagnosing this critical part can save your clients time and money, help reduce your callbacks and liability, and help increase your revenue through proactive measures.
- Matt, what are the common causes of uneven cooling or heating in different house rooms? - December 25, 2025
- Matt, how can you use a multimeter to diagnose electrical issues in an HVAC system? - December 11, 2025
- How to talk furnace safety and performance with homeowners — without scaring them - December 9, 2025
Posted In: Aside, Residential, Technical Tips
