Condenser Split (Approach) Calculator

The condenser split reflects how well the outdoor coil rejects heat.

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Formula

Split = saturated condensing temperature − outdoor ambient

Example calculation

Condensing 105 °F, ambient 85 °F → 20 °F split.

Practical HVAC use

A rising split over time often points to a dirty coil, failing fan or non-condensables. Compare with manufacturer data.

Common mistakes

Measuring ambient in direct sun or in the discharge air.

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Educational tool. Results are estimates from the stated formulas; always confirm with manufacturer data and the code adopted in your jurisdiction. All calculators