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Target Superheat Calculator

Fixed-orifice charging target from wet/dry bulb.

Inputs

Inputs and assumptions

Return-air wet-bulb at the air handler.

Ambient at the condenser.

Result

Target superheat (F)
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What to check

  • Indoor wet-bulb
  • Outdoor dry-bulb
  • Fixed-orifice metering confirmed

Related calculators

Cooling-mode fixed-orifice systems only. Heat pumps in heating mode and TXV systems use other procedures. EPA 608 applies to handling.

Saved calculations

Keep the assumptions with the result.

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