How well is your Air conditioning unit working. Many times around summer many people find themselves crossing their fingers, hoping their unit will continue to produce cool refreshing air when the temperature outside is 100 plus degrees. However, we have all known someone who has had there AC unit go down on them and usually it takes several days to get a new AC unit installed. When the AC goes out, you will be on the spot to shop and buy a brand new AC unit and search for the best deal in desperation of seeking your new, expensive, and absolutely inevitable appliance that is the most important thing to your home in the summer time. When shopping you will hear about different ratings and coefficients that are very difficult to grasp, but here is a little information about what they mean.
The one rating you will hear about most when shopping for a new AC unit is the SEER number of Seasonal energy efficiency ratio. This is a performance rating of an HVAC unit and is a ratio relating to a specific cooling time period. It measures in the specific time period how much cooling output the system can create over the amount of energy that was used. The greater the SEER number is, the less energy is used by the system to create more output of cooler air. In the U.S. the numerator of the SEER equation is measured in British Thermal Units (BTU’s) and the denominator is expressed in watt-hours. The minimum SEER rating in the U.S. is a 13 SEER and goes all the way up into the mid 20’s for the most efficient systems.
The next common number used to rate AC units is the Energy Efficiency Ratio (EER). This is the same formula as the seasonal energy efficiency ratio; however it is not a factor of time but the actual output of the system at a given time. This number is figured using output of the AC in BTU’s over watts. This rating works better for units that are used in warmer regions since the hotter it is outside, the harder the AC unit will work to keep the air cool.
The big thing to remember about AC units is that when you buy them, the more they are used, the less there SEER and EER become. The best way to keep your ratio high is the have preventative maintenance completed on your system every season to make sure the system is operating with no loose screws, pulling the right amount of power, and is generally operating the way that it should.
If you are in need of a new AC unit for your office or hotel building, a PTAC Unit can be an energy-efficient alternative to reduce costs on your building maintenance.