Enter the total heat removed from the air and the total energy consumed to determine the seasonal energy efficiency ratio (SEER).
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The following formula is used to calculate a seasonal energy efficiency ratio.
SEER = HR/EC
- Where SEER is the seasonal energy efficiency ratio (BTUs/Wh)
- HR is the total amount of heat removed from the air (BTUs)
- EC is the total amount of energy consumed to remove the heat (Wh)
The typical units used are BTUs (British Thermal Units) and Wh (watt-hours) but any unit of energy and power could be substituted respectively.
What is SEER?
SEER, short for seasonal energy efficiency ratio, is a measure used to describe the efficiency of a cooling system, most commonly an air-conditioner.
SEER is a ratio of the energy removed from the air to the power consumed by the system. It is similar to a coefficient of performance (COP), but that coefficient is unitless as it compares input power to output power.
How to calculate seasons energy efficiency ratio (SEER)?
- First, determine the total energy (heat) removed from the air during a specific time period (Typically a season).
For this example, to make things simple the time period is just a day and the total heat removed was 500 BTUs.
- Next, determine the total energy required to run the air conditioning.
In this case, it took 400 watt-hours of energy to run the system.
- Finally, calculate the seasonal energy efficiency ratio.
Using the formula above, the SEER is calculated to be:
SEER = HR/EC
SEER = 500/400
SEER = 1.25 BTU’s/Wh