How Exactly Is Energy Efficiency Measured Anyway?


You probably already know that energy costs are on the rise in the US. With reports showing that annual heating and cooling bills can reach over $1000, it’s no surprise that homeowners are looking for a way to reduce their monthly spending on their air conditioning. Understanding that it’s tough to reduce energy bills if you don’t truly understand how energy efficiency is measured, Del-Air strives to educate home and business owners about this crucial factor.

The key to buying the most energy-efficient HVAC systems lies in understanding the various efficiency ratings used in the industry. Here are the top 5 energy ratings you need to know about:

  • Energy Efficiency Ratio (EER): The EER is a measure of the cooling power of an air conditioning system per unit of power consumed. A higher EER corresponds with a more powerful system.
  • Seasonal Energy Efficiency Ratio (SEER): SEER gives the average efficiency for the whole season, so it is a more reliable efficiency rating for air conditioners than other metrics.
  • Energy Star: All Energy Star-rated HVAC equipment must undergo extensive testing to determine its performance level. If a system does not score a SEER of 14.5 or higher on the test, it can’t bear the Energy Star label. Hence, buying Energy Star products is a great way to reduce your monthly utility costs while contributing to nationwide energy savings.
  • Heating Seasonal Factor Performance (HSFP): This rating measures the efficiency of the heating element of a heat pump. A higher HSPF rating corresponds with a more energy-efficient system with the best pumps delivering an SFP rating of 3.5 to 5.
  • Minimum Efficiency Reporting Value (MERV): A rating for air filters in HVAC equipment, MERV refers to the size of the holes in the filter. MERV ratings range from 1 to 16 with the latter being the highest efficiency.

Contact Del-Air for Expert AC Service

The truth is that you don’t have to sacrifice your family’s comfort to boost efficiency in the home. At Del-Air, we proudly supply homeowners with a wide range of AC units and filters featuring high-efficiency ratings along with the latest selection of Energy Star products. For more tips on the best ways to save money on your air conditioning bills, browse the Del-Air blog or call (855) 972-9943 to schedule an appointment with one of our team members.