SEER Rating and Calibration???

TheSuper · February 5th, 2009, 11:03 AM

Can someone explain SEER ratings and how if at all, equipment can be calibrated to maintain the original SEER rating.

143 · February 5th, 2009, 05:47 PM

The efficiency of air conditioners is often rated by the Seasonal Energy Efficiency Ratio (SEER) which is defined by the Air Conditioning, Heating, and Refrigeration Institute in its standard ARI 210=240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. The higher the SEER rating of a unit, the more energy efficient it is. The SEER rating is the Btu of cooling output during a typical cooling-season divided by the total electric energy input in watt-hour during the same period.
For example, consider a 5000 BTU/h air-conditioning unit, with a SEER of 10, operating for a total of 1000 hours during an annual cooling season (e.g., 8 hours per day for 125 days).
The annual total cooling output would be:
5000 BTU/h * 8 h/day * 125 days = 5,000,000 BTU With a SEER of 10, the annual electrical energy usage would be about:
5,000,000 BTU / 10 BTU/W·h = 500,000 W·h The average power usage may also be calculated more simply by:
Average power = (BTU/h) / (SEER, BTU/W·h) = 5000 / 10 = 500 W If your electricity cost is 20¢/kW·h, then your operating cost is:
0.5 kW * 20¢/kW·h = 10¢/h SEER is calculated over a range of expected external temperatures (i.e., the temperature distribution for the geographical location of the SEER test).

Maintenance should be performed regularly to keep their efficiencies as high as possible.

February 5th, 2009, 11:03 AM	#1
TheSuper Administrator Join Date: Jan 2009 Location: Plano, Texas, Posts: 99	SEER Rating and Calibration??? Can someone explain SEER ratings and how if at all, equipment can be calibrated to maintain the original SEER rating.

February 5th, 2009, 05:47 PM	#2
143 Member Join Date: Jan 2009 Posts: 43	The efficiency of air conditioners is often rated by the Seasonal Energy Efficiency Ratio (SEER) which is defined by the Air Conditioning, Heating, and Refrigeration Institute in its standard ARI 210=240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. The higher the SEER rating of a unit, the more energy efficient it is. The SEER rating is the Btu of cooling output during a typical cooling-season divided by the total electric energy input in watt-hour during the same period. For example, consider a 5000 BTU/h air-conditioning unit, with a SEER of 10, operating for a total of 1000 hours during an annual cooling season (e.g., 8 hours per day for 125 days). The annual total cooling output would be: *5000 BTU/h 8 h/day * 125 days = 5,000,000 BTU With a SEER of 10, the annual electrical energy usage would be about: 5,000,000 BTU / 10 BTU/W·h = 500,000 W·h The average power usage may also be calculated more simply by: Average power = (BTU/h) / (SEER, BTU/W·h) = 5000 / 10 = 500 W If your electricity cost is 20¢/kW·h, then your operating cost is: 0.5 kW * 20¢/kW·h = 10¢/h SEER is calculated over a range of expected external temperatures (i.e., the temperature distribution for the geographical location of the SEER test). Maintenance should be performed regularly to keep their efficiencies as high as possible.**

SEER Rating and Calibration???

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