TL;DR
An outdoor reset control is a boiler control that continuously adjusts supply water temperature based on outdoor conditions, sending cooler water on mild days and hotter water only when weather demands it. The reset curve cuts fuel use, smooths room temperatures, and on condensing boilers keeps return water cool enough to actually condense, where the advertised efficiency lives.
What it means
An outdoor reset control is a boiler control that continuously adjusts supply water temperature based on outdoor conditions, sending cooler water on mild days and hotter water only when weather demands it. The reset curve cuts fuel use, smooths room temperatures, and on condensing boilers keeps return water cool enough to actually condense, where the advertised efficiency lives. Many modern boilers include the function, needing only the outdoor sensor wired and the curve commissioned.
Where it sits in the glossary
Outdoor reset control 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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