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Kirk Tolstrup

Kirk Tolstrup

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Silicon Carbide vs. Silicon Nitride Hot Surface Ignitors (HSIs)
The ignitor of a furnace (or a gas pool heater or other gas-fired appliance) is the heat source, and it can come in one of four varieties: standing pilot, direct spark (DS), intermittent spark (ISI), and hot surface (HSI). We have a tech tip explaining each of these ignitor types in detail, but we’re going […]
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