TL;DR
A PSC blower motor is a permanent split capacitor motor that drives the indoor fan in older furnaces and air handlers, using a run capacitor to stay energized and fixed speed taps instead of electronic control. Cheap and simple, it wastes power at reduced speeds and delivers roughly 60 percent efficiency, which is why federal standards and variable-speed ECM replacements have pushed it out of new equipment.
What it means
A PSC blower motor is a permanent split capacitor motor that drives the indoor fan in older furnaces and air handlers, using a run capacitor to stay energized and fixed speed taps instead of electronic control. Cheap and simple, it wastes power at reduced speeds and delivers roughly 60 percent efficiency, which is why federal standards and variable-speed ECM replacements have pushed it out of new equipment. A swollen capacitor or humming, non-starting fan is its classic failure.
Where it sits in the glossary
PSC blower motor is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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