4 calculators in this category
- Superheat CalculatorManufacturer charging data; refrigerant saturation tablesSuperheat is how many degrees the refrigerant vapour has been heated above its boiling point after the last of the liquid has…
- Subcooling CalculatorManufacturer charging data; refrigerant saturation tablesSubcooling is how far below its boiling point the liquid refrigerant has been cooled at the condenser outlet, and it is the…
- Target Superheat CalculatorFixed-orifice superheat charging methodA fixed-orifice system has no valve holding superheat steady, so the correct superheat is not one number — it moves with how…
- HVAC Delta-T CalculatorASHRAE Fundamentals psychrometrics; furnace nameplate temperature riseThis calculator does two jobs. In cooling mode it takes your return air dry bulb and relative humidity, works out the enthalpy…
Which one do you need?
- Superheat Calculator
- Work out suction line superheat from gauge pressure and line temperature, see the evaporating temperature and coil TD, and diagnose a high or low reading.
- Subcooling Calculator
- Calculate liquid line subcooling from gauge pressure and line temperature, compare it to the manufacturer target, and check the condenser split in one step.
- Target Superheat Calculator
- Compute the target superheat for a piston or capillary system from indoor wet bulb and outdoor dry bulb, then compare it to the superheat you measured.
- HVAC Delta-T Calculator
- Compare your measured supply-to-return split against the target for your return air conditions, or check furnace temperature rise against output and airflow.