Choosing an air conditioner is a significant decision that directly impacts your comfort and budget. To make the right choice, it's essential to understand the various energy efficiency ratings and select a unit that suits your needs.

SEER: The Key to Efficient Cooling
SEER is the most important factor to consider when purchasing an air conditioner. It measures the ratio of cooling output (in BTUs) to the electrical energy consumed (in watts) over an entire cooling season.

• The higher the SEER, the more efficient your air conditioner.
• Standards evolve: Lower SEER ratings are being phased out. Today:
  • A SEER of 14 is considered standard.
  • High-end models can achieve a SEER of 20 or more.

EER: Another Important Metric
EER (Energy Efficiency Ratio) is another important rating, although it's less comprehensive than the SEER. It measures the efficiency of an air conditioner at a specific outdoor temperature, typically 95°F (35°C). The EER provides an indication of the air conditioner's performance in hot conditions. Air conditioners should have an EER of at least 8.5, although this figure can reach 19. The closer you get to 19, the more efficient your cooling system will be.
SEER2: Specific to Mini-Split Systems
SEER2 (Seasonal Energy Efficiency Ratio 2) is a specific measurement for mini-split air conditioning systems. It takes into account more precise climatic conditions and is calculated by dividing the cooling output of an air conditioner during the summer in British thermal units (BTUs) by the amount of energy it consumes in watt-hours, or BTU/Wh.
SEER2 standards have also evolved:

• Northern United States: Mini-split systems must now have a SEER2 of 14 (previously 13).
• Southeastern United States:
  • Air conditioners producing less than 45,000 BTU/hour: SEER2 of 15 (previously 14).
  • Air conditioners producing more than 45,000 BTU/hour: SEER2 of 14.5 (previously 14).
• Southwestern United States:
  • Air conditioners under 45,000 BTU/hour: SEER2 of 14.3 to 15 (previously 12.2 to 14).
  • Air conditioners over 45,000 BTU/hour: SEER2 of 11.7 to 14.5 (previously 11.7 to 14).

Tips for Choosing an Efficient Air Conditioner

• Energy Star label: This certification ensures the appliance meets strict energy efficiency standards.
• Energy-saving settings: Utilize eco modes to reduce consumption when you're away.
• Programmable temperatures: Create a personalized cooling schedule to optimize comfort and savings.
• Regular maintenance: A well-maintained air conditioner is more efficient and lasts longer.

In summary, a high SEER rating, combined with good SEER2 and EER values, and adherence to regional standards, guarantees efficient and economical cooling.
To learn more:

• Technology choice: Inverter air conditioners are generally more efficient than traditional models.
• Air conditioner size: An oversized air conditioner will consume more energy than a unit sized for the room.
• Professional installation: Professional installation ensures optimal performance of your air conditioner.

By taking the time to understand the different energy efficiency ratings and following these tips, you can choose an air conditioner that provides optimal comfort while reducing your energy bills.


You may also be interested in these articles:
SEER : Everything You Need to Know to Choose Your Air Conditioner
What SEER is Considered Highly Efficient?