Learn About the New SEER2 Ratings for Your AC


Are you in the market for a new air conditioning system or heat pump? If so, it’s essential to understand the Seasonal Energy Efficiency Ratio (SEER) rating system. SEER is a rating system that measures the efficiency of air conditioners and heat pumps. However, there’s a new rating system in town: SEER2. In this blog, we’ll dive deeper into SEER2 and how it affects you. Plus, we’ll discuss the benefits of upgrading to a more efficient cooling system to save energy and money on utilities.

What does SEER mean?

SEER = Seasonal Energy Efficiency Ratio. It’s a system of rating the efficiency of air conditioners and heat pumps. The efficiency of an air conditioning system is directly proportional to its SEER rating. This means that the higher the rating, the more efficient the system, and therefore, the lower the operational costs. To calculate a system’s SEER rating, the total amount of cooling generated over a year is divided by the energy consumed to produce that cooling.

The Energy Efficiency Regulations, implemented by the Canadian government in 1995, cover air conditioners in Canada. With the SEER rating system, the minimum efficiency requirement is 13 SEER. Units rated 14.5 SEER or higher are awarded an Energy Star designation – an internationally recognized symbol for equipment that demonstrates superior energy efficiency

With some of today’s central air conditioners reaching efficiency levels as high as 25 SEER, it’s important to look for the EnerGuide rating system. This system provides a standardized method for comparing the energy efficiency of different models and brands. You can find the EnerGuide rating label in the manufacturer’s product literature.


Now, there’s a new rating system: SEER2. It’s the same as SEER, in that the higher the rating, the higher the efficiency. However, the rating parameters and testing regimens have changed. This system now employs the M1 blower testing procedure, which is a more stringent test and a more accurate representation of real-world HVAC system conditions. As a result, the minimum energy efficiency requirements for both cooling and heating systems have changed.

How does it affect you?

The purpose of the new rating system is to improve the efficiency of air conditioners and heat pumps, as well as help Canadians reduce their carbon footprint and utility costs. The changes also mean a new generation of HVAC systems that are more eco-friendly and efficient, offering better features and lower energy costs.

Air conditioners and heat pumps are now subject to these new standards. The minimum efficiency for heat pumps in Canada will increase from 14.0 to 15.0 SEER. However, some systems built prior to January 1, 2023 can still be sold and installed after this date. For instance, any AC rated 13.0 SEER manufactured before January 1, 2023 and any heat pump with a SEER rating of 14.0 may still be installed.

Install Your New, Efficient Cooling System & Save

In the end, the new rating system is meant to help limit the impact we have on the environment while enabling households to remain cool and comfortable for less. Upgrading your cooling system will mean navigating these new ratings. But, it also means you’ll save energy and potentially money on utilities. When you’re ready to replace or upgrade your AC, Team Harding can help you find the most efficient unit for your budget.

To learn more about SEER2 or to upgrade your AC system, contact Team Harding.

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