May 30, 2025
How a More Efficient AC Can Save You Up to 40% on Energy Bills
Learn how upgrading to a higher SEER-rated AC can cut your energy bills by up to 40% in Texas.
If your HVAC technician starts throwing around terms like “SEER rating” or “air handler,” you’re not alone in feeling a bit lost. For most Texas homeowners, heating and cooling systems are essential but mysterious. This listicle breaks down the top HVAC terms you should know to make better, more informed decisions about your comfort, energy bills, and repairs.
Have questions about your system or ready for service? Schedule an appointment with Air Techs Heating & Cooling today.
What it means: HVAC stands for Heating, Ventilation, and Air Conditioning.
It’s the umbrella term for the system that regulates temperature, humidity, and air quality in your home. It includes everything from your furnace and air conditioner to ductwork and thermostats. Whether you're running the heater on a chilly Grand Prairie morning or blasting the AC in a Mansfield summer, you're relying on your HVAC system.
Learn more about our full HVAC services.
What it means: SEER stands for Seasonal Energy Efficiency Ratio.
This number measures how efficiently your air conditioner or heat pump cools your home. A higher SEER means better energy efficiency—and potentially lower electric bills. As of 2023, the Department of Energy requires new systems in Texas to meet minimum SEER2 standards.
If your system is outdated or has a SEER under 14, it may be time to upgrade.
What it means: The indoor component that moves air through your home’s ductwork.
An air handler contains the blower, filter, and sometimes the evaporator coil. It works hand-in-hand with your AC or heat pump to distribute conditioned air. A malfunctioning air handler can cause uneven temperatures or poor airflow in your home.
Don’t ignore inconsistent temperatures—check your maintenance options.
What it means: The chemical fluid that absorbs and transfers heat in your AC or heat pump.
Without refrigerant, there’s no cooling. Older systems often use R-22, which is being phased out due to environmental regulations. Newer systems use R-410A or R-454B, which are safer and more efficient. Low refrigerant levels usually indicate a leak—and that’s something you should fix fast.
Experiencing warm air from your vents? Here’s what to check.
What it means: The device that lets you control your home’s temperature.
Today’s options go beyond simple dials. Smart thermostats can learn your habits and adjust automatically to save energy. If your home feels too warm or too cold—even with the system running—the thermostat could be miscalibrated or outdated.
Troubleshooting tips: Thermostat Not Working?
What it means: MERV stands for Minimum Efficiency Reporting Value.
This rating measures how well an air filter captures particles. Higher MERV ratings mean better filtration—but not always better performance. If your HVAC system isn’t designed for a high-MERV filter, using one could restrict airflow and reduce efficiency. Homeowners with allergies or pets should consider filters rated MERV 8–13.
For more info on filters, check out our guide on how to change them.
What it means: The network of metal or flexible tubes that distributes air throughout your home.
Leaky, dirty, or uninsulated ducts can reduce HVAC efficiency by up to 30%. That’s a lot of wasted energy and money. Regular duct inspections and professional duct cleaning can keep your system running smoothly and improve indoor air quality.
Also read: Is Duct Cleaning Worth It?
What it means: The outdoor unit's key component that pressurizes refrigerant.
Think of it as the heart of your air conditioner. When the compressor fails, your system can’t cool the home. It’s also one of the most expensive parts to replace, which is why regular seasonal maintenance is essential to extend its lifespan.
Knowing these eight HVAC terms gives you a leg up when talking with a technician, reviewing service options, or shopping for a new system. You don’t need to be an expert—but being informed helps you ask the right questions and make smart investments in your home’s comfort.
Have more questions or need a service check? Contact our team or book an appointment today.
