Energy Efficiency Ratio Of 5 Star Ac

Energy star certified central air conditioners have higher seasonal energy efficiency ratio seer and energy efficiency ratio eer ratings and use 8 percent less energy than conventional new models.

Energy efficiency ratio of 5 star ac.

For example a 4 star window air conditioner will not have the same efficiency as a 4 star split air conditioner. Seasonal energy efficiency ratio seer is given to central air conditioning systems. Why you should pay attention to eer and seer. Energy efficiency ratio eer is a score given to room air conditioners.

The eer is the ratio of the cooling capacity in british thermal units btu per hour to the power input in watts. For room air conditioners this rating is the energy efficiency ratio or eer for central air conditioners this rating is the seasonal energy efficiency ratio or seer. A room air conditioner s efficiency is rated according to the energy efficiency ratio eer. One btu is the amount of heat it takes to raise the temperature of one pound of water by 1 fahrenheit about 1055 joules.

When buying a new room air conditioner look for the energy star label. Most manufacturers are reducing their window acs line ups and focusing more on split acs many of which are inverter based. A room air conditioner s efficiency is measured by the energy efficiency ratio eer. Most air conditioners are rated in british thermal units btu.

The ratio is measured in british thermal units btu per hour. The star rating for air conditioners is determined differently to other appliances. The higher the eer rating the more efficient the air conditioner. The manner in which they function leads to better energy efficiency compared to non inverter models.

Pledge to choose an energy star certified room air conditioner. A similar standard is the european seasonal energy efficiency ratio eseer. If all room air conditioners sold in the united states were energy star certified the cost savings would grow to more than 350 million each year preventing more than 6 billion pounds of greenhouse gas emissions annually equivalent to the emissions from over 570 000 vehicles. For air conditioners the measure of energy efficiency in determining whether the air conditioner meets the minimum energy performance standard is the energy efficiency ratio eer for cooling and the coefficient of performance cop for heating.

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 2008 standard ahri 210 240 performance rating of unitary air conditioning and air source heat pump equipment. These ratings are posted on an energy guide label which must be attached in a visible place on all new air conditioners. Most homeowners are used to buying hvac units by the btu rating but the problem is that the btu rating alone doesn t determine energy efficiency or even operating efficiency you can have a 12 000 btu unit that operates on 1 400 watts which is an eer of 8 5 or the same 12 000 btus operating on 800 watts which works out to an eer of 15.