I want t know about A/C mini split or multi split and its efficiency rate . What is the SEER meaning?
Answer:
SEER is the Seasonal Energy Efficiency Rating. -- Also shortened to EER.
AC units (including portable, window and central) have their cooling capacity rated in BTU/hr.
The input power for the unit is rated in watts.
SEER = BTU rating ÷ watts
The higher the SEER, the lower the energy requirements.
Another cooling capacity rating is "tons" where 12,000 BTU/hr is equal to one ton. The original definition of ton was the heat absorbed by melting a 1-ton block of ice -- Changing it from ice at 32° F to water at 32° F.
The US Department of Energy has defined minimum energy efficiency ratings. For a central AC unit, the lowest EER rating that can be sold is 10. This translates into a power consumption of 1.2 kW per ton. For window units the minimum efficiency is between 8 and 9 depending on the BTU capacity (size).
SEER refers to the seasonal energy efficiency rating, as opposed to EER which is a simpler method involving BTU of cooling divided by power in.
The SEER rating is supposed to include the effect of seasonal changes on the efficiency of the unit (any unit is a bit more efficient when it's colder out).
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