As summer temperatures climb, air conditioning becomes a daily necessity for millions of households and businesses. Yet staying cool doesn’t have to come at the cost of skyrocketing energy bills or environmental inefficiency. By following a few best practices —and understanding the strengths of today’s most popular air conditioning technologies —you can keep your space comfortable while saving money and energy.
1. Optimize Your Thermostat Settings
One of the simplest yet most effective ways to boost air conditioning efficiency is to set your thermostat wisely. The U.S. Department of Energy recommends setting your thermostat to 78°F (25.5°C) when you’re home, and a few degrees higher when you’re away. A smart thermostat can automate these changes, learn your preferences, and even adapt to weather patterns to improve overall performance.
2. Understand Your Cooling Technology
Not all AC systems are created equal. Understanding the type of system in your home can help you tailor your usage for maximum efficiency:
- Inverter Technology (Always-On Systems): Inverter ACs are highly efficient because they don’t turn off and on repeatedly like traditional systems. Instead, they adjust compressor speed to maintain a steady temperature. This continuous operation uses significantly less power than cycling systems, especially in homes where AC is used for long stretches. They’re ideal for consistent, all-day cooling in variable climates.
- Central Air Conditioning: Central AC systems are effective for cooling entire homes but can be wasteful if you’re only using a few rooms. For best results, ensure ducts are sealed and insulated, filters are changed monthly, and thermostats are zoned (if possible) to control different areas separately.
- Zonal or Individual Room ACs: For smaller spaces or households with varied room usage, zonal or portable AC units offer targeted cooling. These units are especially effective when you only need to cool one room at a time, such as a bedroom at night. To optimize energy use, keep doors closed and windows sealed when these units are running.
3. Maintain Your System
Regular maintenance is a must. Dirty filters, blocked vents, and neglected coils can reduce an AC system’s efficiency by 15% or more. Clean or replace filters at regular intervals (as specified by the system manufacturer — monthly,. quarterly, semi-annually or annually) and schedule a professional tune-up before the peak of summer to inspect refrigerant levels, check for leaks, and test electrical connections. Derr offers a low cost maintenance program to keep your HVAC system in prime operating condition.
4. Use Fans and Shade Strategically
Ceiling fans can make a room feel up to 4°F cooler, allowing you to raise the thermostat without sacrificing comfort. In addition, using blinds, curtains, or reflective window film can block out solar heat during the hottest part of the day. Landscaping with shade trees or installing exterior awnings can also significantly reduce indoor heat gain.
5. Seal and Insulate
A well-insulated home holds cool air longer, reducing the load on your AC. Check for air leaks around windows, doors, and ductwork. Weatherstripping and proper insulation in the attic and walls can keep your home cooler in summer—and warmer in winter.
6. Consider Energy Ratings When Upgrading
When upgrading or replacing your AC, look for high SEER (Seasonal Energy Efficiency Ratio) ratings or ENERGY STAR® certifications. Inverter ACs typically come with high SEER ratings and offer superior long-term energy savings, especially in climates with long cooling seasons.
Playing It Smart Is Cool
Smart cooling isn’t just about comfort—it’s about sustainability and savings. By pairing the right technology with practical usage habits, you can enjoy a comfortably cool home all summer long without sweating the electricity bill. Whether you choose the precision of inverter technology, the coverage of central AC, or the flexibility of zonal cooling, staying informed is the first step to staying cool, efficiently. [DHC]