TL;DR
A pool heater bypass is a valve arrangement that routes some or all of the circulation flow around the heater instead of through its heat exchanger. It protects the exchanger from the excessive flow of high-horsepower pumps, lets the unit be isolated for service or winterization without shutting the system down, and trims pressure drop when no heating is called for.
What it means
A pool heater bypass is a valve arrangement that routes some or all of the circulation flow around the heater instead of through its heat exchanger. It protects the exchanger from the excessive flow of high-horsepower pumps, lets the unit be isolated for service or winterization without shutting the system down, and trims pressure drop when no heating is called for. Manufacturers publish maximum flow ratings that determine whether one must be installed.
Where it sits in the glossary
Pool heater bypass 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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