Looking for a new AC? Consider what SEER rating you require. Understanding SEER and its implications on energy efficiency is crucial for home comfort and managing energy consumption and bills. Not sure what SEER ratings are and how they might affect your home comfort? Read on to learn more.
Understanding SEER Rating
SEER is short for seasonal energy efficiency ratio. It’s a metric used to assess the cooling efficiency of HVAC systems by determining their cooling output during a typical warm season and dividing it by the total electrical energy consumed. If the cooling output of a system is high but its total energy consumption is low, it’s considered very efficient. On the other hand, if an AC requires a lot of energy to keep a home comfortable, it’s deemed less efficient.
Currently, the SEER rating scale in the U.S. ranges from 13 to 24, with 24 being the most efficient system. In southern regions like California, ACs with a SEER rating of 15 and up get an ENERGY STAR label. For the northern parts of the country, ENERGY STAR certification applies to units with a SEER rating of 14 and higher.
The ENERGY STAR Label
ENERGY STAR is a program led by the Department of Energy (DOE) and the U.S. Environmental Protection Agency (EPA), designed to assist consumers in recognizing appliances and systems that prioritize energy efficiency. ACs with this certification have undergone thorough testing and evaluation to ensure they meet or exceed strict efficiency and performance standards. Such systems often qualify for rebates, federal tax credits, and other incentives because they also contribute to a low carbon footprint, which is good for the environment.
SEER vs. EER and CoP
The EER (Energy Efficiency Ratio) was one of the first attempts to standardize how the cooling efficiency of ACs is measured. Unlike SEER, which evaluates efficiency over an entire cooling season, EER calculates a unit’s efficiency at a fixed indoor and outdoor temperature. During its estimation, the outdoor temperature must be at 95 degrees Fahrenheit and the indoor temperature at 80 degrees with 50% humidity. So, basically, EER tells you how efficient your AC will be in the middle of the summer, while SEER provides a broader picture of efficiency across varying temperatures throughout the cooling season.
The CoP (coefficient of performance) is another efficiency metric for heating and cooling systems. Instead of measuring energy efficiency in terms of cooling output per unit of electricity consumed like SEER and EER, CoP tells you how effective an air conditioner is by comparing the cooling output it delivers to the total energy input (including electricity and fuel.)
SEER2
Modern ACs often come with a SEER2 designation instead of just SEER. This shouldn’t worry you since they are not that different. The Department of Energy updated the testing procedures for measuring HVAC efficiency to better reflect real-world conditions by including variables such as airflow resistance in the ductwork, external static pressure, and part-load conditions in the equation. As a result, SEER2 ratings are typically lower than SEER. For instance, SEER 15 is now rated as SEER2 14.3 for ducted systems.
Other Important Considerations When Choosing an AC Unit
To maximize efficiency, comfort, and convenience, consider these other factors:
Advanced Technology
Look for systems that feature technologies such as variable-speed compressors, Internet of Things (IoT), and smart thermostats. Variable-speed compressors can adjust their speed based on cooling demand to save as much energy as possible. IoT lets you connect your AC to your phone, laptop, and other home systems to create a more integrated and efficient cooling experience. Smart thermostats take efficiency a step further by learning your home cooling habits and automatically adjusting temperatures accordingly. Some models use AI-driven algorithms to anticipate your cooling needs based on outdoor conditions and occupancy patterns.
Enhanced Filtration
Cleaner air enhances AC performance and energy efficiency because when filters effectively remove dust, allergens, and microbial contaminants, they prevent buildup on internal components. The fan bearing or belts will experience less friction from pollutants, while the indoor coils will efficiently heat without obstruction. Therefore, consider ACs with advanced filtration technologies such as HEPA filters, UV light purification, and built-in dehumidifiers.
Contact Us for More Information
Understanding SEER and its implications on energy efficiency is crucial when you’re considering installing a new air conditioner. Before you make any decisions, consult with us, and we’ll gladly help you navigate the complexities of HVAC systems, including other factors that may impact your unit’s expected efficiency and overall performance. We also offer maintenance and repair services as well as energy audits to ensure your system runs optimally throughout its lifespan.
Call Brian's Heating & Cooling, Inc. today for air conditioner installation and maintenance in Madera and surrounding areas.
