Ducted central AC vs. ductless systems: differences and benefits
Steven E / Wednesday March 26, 2025
Choosing the right air conditioning system for your home goes beyond simply adjusting the thermostat. The decision between ducted central AC and ductless systems can significantly influence your comfort, energy costs, and installation process. By understanding how each system operates and the benefits they offer, you can make an informed choice that best suits your needs. Let’s take a look at the key differences and advantages of these two popular cooling solutions.
The advice provided in this article may not apply to all appliance models. While we strive to offer accurate DIY repair tips, variations in models and setups may affect the process, such as the error codes displayed or the method for replacing certain parts. For the most precise instructions, it’s recommended to consult the manufacturer’s documentation for your specific model or contact us if you need further clarification.
What is ducted central AC?
A ducted central AC system works by cooling air in a central unit and distributing that air throughout your home via a network of ducts. Here’s how it works:
- The cooled air is produced by a central air handler or unit.
- The air is then pumped through a system of ducts that lead to various rooms in your house.
- Ducts are typically hidden within walls or ceilings, making the system less visible.
This system is commonly found in larger homes or homes that already have ductwork installed. It’s also commonly paired with heating systems for year-round comfort.
What is a ductless AC system?
A ductless system, also known as a mini-split system, operates a bit differently from ducted AC. Instead of using ducts to distribute air, it uses individual units that are mounted directly in each room. Here’s a breakdown of how it works:
- Each room has its own wall-mounted unit that is connected to an outdoor compressor.
- These indoor units cool the air directly in each room, and the outdoor unit handles the cooling process.
- The system requires no ducts, making it an excellent option for homes without existing ductwork.
Mini-split systems are great for homes, additions, or spaces where ductwork isn’t feasible. They also offer flexibility and are typically more energy-efficient.
Key differences
Now, let’s compare ducted central AC systems with ductless systems to highlight the main differences between the two:
Installation
- Ducted AC: Requires installing ducts throughout the house, which can be costly and more invasive.
- Ductless systems: Much easier to install with no need for ducts, making them less disruptive and faster to set up.
Energy efficiency
- Ducted AC: Can lose energy through the ducts, especially if they’re not properly insulated.
- Ductless systems: More energy-efficient as they cool each room directly, reducing energy loss.
Aesthetics
- Ducted AC: The central unit and ducts are usually hidden, so you won’t see much of the system in your living space.
- Ductless systems: The units are visible and mounted on the walls, but are generally compact and unobtrusive.
Control
- Ducted AC: One thermostat controls the temperature for the entire house.
- Ductless systems: Each unit has its own thermostat, allowing for precise control and zoning in different rooms.
Maintenance
- Ducted AC: Requires more maintenance, including cleaning the ducts and checking the system’s components.
- Ductless systems: Easier to maintain, with individual filters that can be cleaned or replaced without affecting the whole system.
Benefits of ducted central AC
Ducted central AC systems come with several advantages, particularly for larger homes or homes with existing ductwork:
- Even cooling throughout the house: Since air is distributed via ducts to each room, the system can provide consistent cooling to every space.
- Ideal for larger homes: Ducted systems are more efficient for cooling large homes or multi-level buildings.
- Less visible equipment: The air handler and ducts are typically hidden, so you won’t have visible units taking up wall space.
- Can be paired with heating: A central system can be integrated with heating units, providing year-round climate control.
Benefits of ductless AC systems
Ductless AC systems offer several unique advantages, especially in smaller homes, apartments, or spaces without ductwork:
- Zoning flexibility: Since each unit is controlled individually, you can cool specific rooms based on usage, saving energy and money.
- Higher energy efficiency: Direct cooling means less wasted energy and lower utility bills.
- Quick installation: Ductless systems don’t require extensive ductwork, making them easier and faster to install, often in a day or less.
- Compact and flexible: The units are small and can be placed where needed, without the need for ductwork or major renovations.
- Ideal for renovations or home additions: If you’re adding a new room or converting a space like a basement or garage, ductless systems are a great option.
Which system is right for you?
Choosing between ducted central AC and ductless systems depends on several factors:
- Home size and layout: If you have a large home or existing ductwork, a ducted system might be the best choice. For smaller homes or areas without ducts, a ductless system may be ideal.
- Energy efficiency: Ductless systems generally offer better energy efficiency, especially if you want to cool specific rooms.
- Budget: Ductless systems tend to have a lower upfront cost, but ducted systems may be more cost-effective long-term for larger homes.
- Installation time: Ductless systems are quicker and less invasive to install, whereas ducted systems require more work and time.
Additional information
If you’re having trouble tracking down the right parts or making sense of model-specific instructions, you can check out our how to find your appliance’s model number guide or give us a shout for more help. We’re committed to helping you get the most out of your air conditioning system.
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With nearly a decade of experience in providing top-notch customer service regarding appliance parts and repair, Steven enjoys sharing practical advice, troubleshooting tips, and interesting information to help readers stay informed.