Engineering calculator · Updated 17 September 2026
Chiller Lift Calculator — Temperature Lift, Pressure Lift & Lift Ratio
Calculate evaporator-to-condenser temperature lift and optional pressure lift for chiller diagnostics, including Kelvin lift ratio and approach context.
Inputs
Live results
- Temperature lift 35 K
- Kelvin lift ratio 1.1258314
- Pressure lift 6.5
- Pressure ratio 2.8571429
Formula
ΔT=Tcond,sat−Tevap,sat; ΔP=Pcond−Pevap.
Worked example
40°C condensing and 5°C evaporating gives 35 K lift.
Assumptions and limits
- Enter saturated refrigerant temperatures, not leaving-water temperatures.
- Pressure lift requires absolute or gauge pressures on the same basis.
FAQs
What does this Chiller Lift Calculator calculate?
Calculate evaporator-to-condenser temperature lift and optional pressure lift for chiller diagnostics, including Kelvin lift ratio and approach context.
Is this suitable for final equipment selection?
Use the result for engineering screening and operating diagnostics. Confirm final selections against measured data, OEM curves and applicable codes.
Why are the assumptions explicit?
Plant results depend on reference conditions, pressure basis, efficiencies and measurement locations. Showing assumptions keeps the calculation auditable.