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.
Energy efficiency rating portable air conditioner.
The higher the rating is the more efficient the air conditioning unit is.
The higher the eer the more efficient the unit.
In 2016 the department of energy set new efficiency standards for portable.
For example if a 10 000 btu air conditioner consumes 1 200 watts its rating is 8 3 10 000 btu 1 200 watts.
This tells you how much energy it uses when compared with its output power.
The eer and cop are defined as the capacity output divided by the power input.
Portable air conditioner s efficiency ratings for efficiency we looked at each unit s energy efficiency ratio eer as provided by the manufacturer.
The energy star designation signifies that the air conditioner has passed the stringent energy efficiency guidelines set by energystar gov.
If you pit a 10 000 btu portable unit against a 10 000 btu wall unit the portable is going to win for energy efficiency.
You never have to use above a 110 120 outlet with a portable unit as opposed to wall ac s.
Sacc is expected to replace the less comprehensive btu rating as the standard measurement for ac power output but most air conditioners are still described in terms of btu so we considered both.
Pledge to choose an energy star certified room air conditioner.
The higher the eer rating the more efficient the air conditioner.
Among the units we reviewed the highest eer rating we found is 11 1 while the average rating is 9 84.
The ratio is measured in british thermal units btu per hour.
The higher the number the better.
The air conditioner eer is its british thermal units btu rating over its wattage.
The eer is the energy efficiency ratio a number produced by dividing the air conditioner btu rating its output by its wattage its input.
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.
A room air conditioner s efficiency is rated according to the energy efficiency ratio eer.
When buying a new room air conditioner look for the energy star label.
However a higher rating is usually accompanied by a higher price.
While window acs have been subject to federal energy efficiency standards for more than 25 years portable acs have not.
