TL;DR
Refrigerant charge is the precise quantity of refrigerant an air conditioner or heat pump must contain to move heat at rated capacity and efficiency, set by weighing in the factory-specified amount plus line-set adjustments. Technicians verify it by measuring superheat or subcooling against the manufacturer's targets, not by topping off until air feels cold.
What it means
Refrigerant charge is the precise quantity of refrigerant an air conditioner or heat pump must contain to move heat at rated capacity and efficiency, set by weighing in the factory-specified amount plus line-set adjustments. Technicians verify it by measuring superheat or subcooling against the manufacturer's targets, not by topping off until air feels cold. Studies attribute a large share of underperforming systems to incorrect charge, which also strains the compressor in both directions.
Where it sits in the glossary
Refrigerant charge 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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