Case &ContrastFree calculators

HVAC & steady-state units

Cooling Efficiency Unit Converter Calculator

Convert equivalent steady-state COP, EER and electrical kW per refrigeration ton on the same rating basis.

184 / COOLING EFFICIENCY UNIT CONVERTER

Your numbers.
A clearer decision.

Free to use. No signup.
Inputs stay in this browser.

Starting values are illustrative. Use your own costs, rates and assumptions.

INPUT GROUP 01

Entered assumptions and matching units

Check the assumptions before acting on a result.

Read the method and example

YOUR CALCULATION

Convert equivalent steady-state cooling efficiency units on one rating basis.

Steady-state COP (W/W)

3.5

Steady-state EER (Btu IT/Wh)

11.942

Electrical kW per refrigeration ton

1.005

Keep the calculation

Saving is optional and stays on this device. Unsaved edits are not kept when you leave. CSV includes every input and the current results.

Illustrative inputs loaded. Replace them with your own assumptions.

How the cooling efficiency unit converter calculator works

Equivalent steady-state EER is COP times 3600/1055.05585262 using the international-table Btu. A refrigeration ton equals 12,000 Btu IT/h, so electrical kW/ton equals 12 divided by EER.

Only one matched steady-state test or operating condition is converted. The input and output units express the same efficiency rather than making different tests equivalent.

SEER, SEER2, IEER and other seasonal or weighted measures are not valid substitute inputs. No field-efficiency prediction, climate adjustment, equipment suitability or federal eligibility determination is made.

Worked example

A steady-state COP of 3.5 is about EER 11.942496 and 1.004815 electrical kW/ton. Changing the entered COP to 4 returns COP 4 with the corresponding equivalent steady-state quantities.

Sources and assumptions

The source material explains the underlying calculation or pricing structure. Entered prices, costs, schedules and scenario choices are your assumptions; this tool does not obtain supplier quotes or predict actual results.

  • Water Flow Unit Conversion

    Convert a steady volumetric flow between liters per minute, liters per second, cubic meters per hour and U.S. gallons per minute.

  • Power Conversion

    Convert a known power value between watts (W), kilowatts (kW), mechanical horsepower (hp) and Btu IT per hour. Calculating electrical power from volts and amps is a different task that may also need power factor and phase details.

  • Viscosity Unit Converter

    Relate dynamic and kinematic viscosity using density supplied for the same fluid state.

  • Energy Unit Conversion

    Convert an energy quantity between kWh, joules, megajoules, International Table Btu and a declared therm convention. Keep energy separate from power.

Calculation methods, testing and sources · Practical calculation guides