SEER stands for Seasonal Energy Efficiency Ratio. This is the ratio of the cooling output of an AC over a normal cooling season, divided by the energy it utilizes in Watt-Hours. It is also called a Seasonal Energy Efficiency Rating. The better the SEER rating, the higher energy efficient a given air conditioning unit is (we’re presuming for comparison motives that all other variables are the same between all the air conditioning systems compared).

A SEER ratio is evaluated over a whole cooling season using a continuous indoor temperature and various outdoor temperatures varying from 60 degrees to 100 degrees. This is how it affects a typical cooling season.


  • Increased Energy Efficiency

A high SEER rating furnishes greater energy efficiency in particular conditions. The lowest standard Seasonal Energy Efficiency Rating for an air conditioning system is 13, though most modern air conditioners have a Seasonal Energy Efficiency Rating that varies from 13 to 21.

  • Incredible Indoor Comfort

Getting an air conditioner with an elevated SEER does mean you’ll be happier in the summer months, especially if you live in a hot region with scorching summers.

Greater SEER units often have two elements that furnish considerable indoor comfort.

  • 2-stage or variable-speed compressor

  • Variable-speed blower

If you have an aged 8 SEER system and replace it with a 16 SEER unit, you could considerably decrease the expense of cooling your residence.

How SEER Ratings Affect Your Air Conditioning Unit

Before the air conditioning system installation, you must ensure that a SEER rating suggests the air conditioning unit’s full potential. This implies that when in the United States, having a value of 21 SEER, for instance, the rating can be as high as 21 SEER. It will not always perform at 21 SEER as the universal laws of thermodynamics limit it. Several factors influence an air conditioning system’s efficiency and performance, including outdoor temperatures, sun exposure, thermostat settings, building envelope, and mechanical difficulties, and so forth.

SEER ratings are inconsistent, which implies that HVAC units with the greatest SEER values may not save you money in the future. If an appliance rated at 21 SEER performs at a standard of 15 SEER, it may be smarter to save money and purchase an Air Conditioning unit with a lesser SEER rating. An HVAC professional can enable you to determine the most suitable SEER rating for your new Air Conditioning unit using particular equations that average the maximum Energy Efficiency Ratio (EER) over the range of predicted seasonal temperatures. Usually, promising SEER values for residential air conditioning systems are 14 to 16.

Admore Comfort was founded more than fifteen years ago to deliver AC repair in Reading, PA along with HVAC system sales, installation, and service. BPI certification and weatherization-home performance testing were added a couple of years ago to give comprehensive home comfort diagnostics and solutions beyond appliance problems alone. We utilize the (Whole House Systems Approach), also known as the House as a system approach to ensure your residence is efficient, comfortable, and safe. Call us now at 570-754-8000 to avail of our air conditioning service in Reading!