Technology never stands still, and that means that the science behind refrigerant-based air conditioners is always finding new ways to cool better and cool more efficiently. Today’s air conditioners can have efficiency ratings that dwarf older models. Where central air conditioners once had SEER ratings below 12, the modern high-efficiency air conditioners can score SEER ratings in the 20s, almost doubling how efficiently they change electricity into cooling output.
If you have an AC that’s more than 15 years old, replacing it with any new system will be an efficiency improvement. But special high-efficiency units can make amazing differences. We’re here to explain exactly what the difference is with these advanced units that allow them to significantly reduce energy use.