Vol76-9 September 2026
Member newsletter for Southern Maryland Electric Cooperative
Common HVAC myths and what you should know
Your heating and cooling system plays a major role in home comfort
and energy efficiency. Unfortunately, falling for common HVAC myths can lead to higher energy use, unnecessary wear on the system, and costly repairs. Here are some common HVAC myths.
Turning your HVAC system on and off can save you money.
Fluctuating your system on and off can increase energy use. When your system restarts, it often works harder and longer to bring your home back to a comfortable temperature, especially during extreme temperatures. Keep your thermostat set to a consistent temperature to help maintain comfort while avoiding energy spikes.
Closing vents in unused rooms saves energy.
Closed vents restrict airflow, strain your system, and reduce overall efficiency. Keep vents open and unobstructed so your system can circulate air the way it was designed to operate.
Your HVAC system only needs attention when something breaks.
Skipping routine maintenance can shorten the life of your system and increase the risk of costly repairs. Schedule regular HVAC tune-ups with a participating contractor to keep your system running smoothly and catch issues early.
Bigger is better when it comes to HVAC systems.
Oversized systems cycle on and off too often, which can lead to uneven temperatures, excess humidity, and higher energy bills. Choose a unit sized specifically for your home. A participating contractor can help identify the system that’s right for your needs.
Understanding how your HVAC system really works, and separating fact from myth, can make a big difference in how well it performs. Choosing the right-sized unit, keeping vents open and unobstructed, and staying on top of maintenance can all help your system run more efficiently and last longer. Following recommended practices can help keep your
home comfortable in every season.