In most homes in the United States, air travels through metal ductwork. In the HVAC industry, we call them ducted systems. Simply put, a ducted split system consists of a unit located inside the home and a separate unit mounted outside the house. Ductwork connects to the indoor unit and distributes air to each room in the home. Hence, it’s called (or referred to) a ducted split system.
Good question. SEER stands for Seasonal Energy Efficiency Ratio. In short, it’s how you measure the efficiency of an HVAC system. Today’s systems are manufactured with SEER ratings ranging from 14 (entry-level) to the highest-efficiency 20+ SEER. Example: A 16 SEER system, on average, is roughly 25% to 30% more efficient than a 10 SEER system manufactured decades ago. Think about that! Can you imagine the difference 30% savings would make to your utility bill!
Ducted systems offer endless flexibility for most applications.
Today’s products start at 14 SEER and up to 20+ SEER with AHRI-certified match-ups.
Ducted systems allow for endless indoor air quality (IA) options. The perfect combination is an air scrubber with a built-in UV light paired with a humidifier to dial in the exact humidity (Rh) in winter.
Properly designed ducted solutions allow for balanced air flow throughout the entire home, eliminating hot and cold spots.
Achieving the lowest noise level has become a competitive race for competing HVAC manufacturers. Today’s high-efficiency systems are made with variable speed motors that result in whisper-quiet operation.
Choosing the right HVAC system can make a big difference in your home’s comfort, energy efficiency, and monthly utility bills.
A single-speed HVAC system operates at one setting only: 100% power.
That means when your system turns on, it runs at full capacity until your home reaches the desired temperature—then it shuts off completely.
Benefits of Single-Speed Systems
Things to Consider
Because the system is always either fully on or fully off, you may notice:
A variable-speed HVAC system adjusts its output based on your home’s needs. Instead of constantly turning on and off, it can run at lower speeds for longer periods, maintaining a more consistent indoor temperature and better overall comfort.
Benefits of Variable-Speed Systems
Things to Consider
Lennox ducted systems deliver the efficiency and zoning flexibility of a mini-split with the clean, low-profile look of a traditional ducted system.
Learn More About Lennox.
For over 120 years, Trane has been building the highest quality products in the industry thanks to its dedication to quality, innovation, and reliability.
Trane designs, tests & builds its own parts
Learn More About Trane.
Carrier ducted mini-split systems combine the energy efficiency and zoning capabilities of ductless technology with the discreet, integrated look of a traditional ducted installation.
Learn More About Carrier.
A Unico high-velocity HVAC system is an advanced heating and cooling solution that uses small, flexible air ducts instead of traditional bulky ductwork, making it ideal for older homes, historic properties, custom homes, and spaces where standard ducts won’t fit. By delivering air at higher velocity, the system creates more even temperatures, better humidity control, quieter operation, and improved indoor comfort without major renovations. It’s a great option for homeowners looking for efficient, high-performance comfort with a cleaner, less invasive installation.
Learn More About The Unico System.
True comfort for all seasons
Variable speed systems
WIFI touchscreen smart theremostats
Well-balanced duct work, even airflow throughout
Zoned systems with inline dampers to allow different temperatures in different parts of the home
Ducted HVAC systems allow for unlimited design flexibility and comfort. The key to a successful, well-designed system is making sure the ductwork is sized and designed properly. Proper design allows for the correct amount of airflow (CFM) to each room of the house.
Along with a well-balanced system, ducted systems offer a great way to provide zone solutions for certain areas of your house, coupled with the ability to incorporate indoor air quality products. A well-designed ducted system results in even airflow to each room, while efficiently maintaining desired comfort temperatures during all seasons.

























