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What Is a Mini Split Air Conditioner?

A mini split air conditioner is a ductless cooling system that provides targeted comfort for one room or multiple zones. Since mini splits don’t require ductwork, they’re popular for home additions, basements, garages, and spaces that are hard to cool evenly.
Learn whether a mini split is the right fit for you and the differences between ductless air conditioners and central air conditioning systems.
How Ductless Mini Splits Work
Mini splits include one or more indoor air handlers mounted on a wall or ceiling and an outdoor compressor connected by refrigerant lines. During warmer months, the outdoor unit removes heat from inside your home and releases it outdoors while the indoor unit circulates cool, conditioned air throughout the space. Most mini split air conditioners do the opposite in the winter, removing heat from the outside air and circulating it in your home.
Many systems use a remote control or wall-mounted thermostat. Mini splits allow different areas of the home to be controlled independently.
Benefits of a Mini Split System
Mini splits can be a strong option for older homes, room additions, and spaces where ductwork is impractical. These are the primary benefits:
- Operate quietly for improved comfort
- Provide zoned cooling for individual rooms
- Increase energy efficiency by eliminating ductwork air leaks
- Lower energy costs by replacing electric or propane heating with an energy-efficient heat pump
- Simplify installation without major remodeling
- Improve indoor air quality with an all-electric system that produces no on-site combustion emissions
- Eliminate fuel storage and the risk of running out of propane
Common Uses for Mini Splits
Mini splits are often used where traditional HVAC systems struggle to maintain consistent temperatures. Applications include:
- Finished basements
- Garages
- Sunrooms
- Home offices
- Additions
- Whole-home zoning
It’s much simpler to install a mini split in these areas than a traditional HVAC system. No ducts are required and installers can easily run wiring through closets and crawlspaces.
Mini Split vs. Central Air Conditioner
Window and portable AC units are affordable options for cooling individual rooms, but they tend to be noisy, bulky, and less efficient. Mini-splits provide quieter, more consistent cooling, are permanently installed, and can efficiently cool larger spaces. They also last longer, are easier to install, and are much more affordable than central AC because they don't require ductwork and use less energy by avoiding the air losses common in ducted systems.
Central air may still be better for some whole-home setups, including new builds.
Is a Ductless Mini Split Right for My Home in Minneapolis & St. Paul?
A mini split may solve comfort issues where a larger system is not the best fit. Mini splits are much more affordable than a central AC unit and can cool a larger space than a portable AC unit. To install a ductless mini-split, you need easy access to the outdoor compressor for occasional maintenance.
Keep in mind that most mini split air conditioners benefit from or require professional installation. Proper AC replacement improves efficiency and reliability. Professional technicians also handle any permits required for mini split system installation. If you're considering AC installation in Minneapolis, a ductless mini split may be an efficient option depending on your home's layout and cooling needs.
Why Twin Cities Homeowners Trust Total Comfort for Mini Split AC Installation
When it's time to install a mini-split system, homeowners turn to Total Comfort for expert guidance and quality AC services in the Twin Cities. Homeowners count on fast response times and professional installation designed for Minnesota homes and weather conditions.
If you're thinking about replacing your AC, Total Comfort can help you determine whether a mini-split system is the right solution. Our experienced technicians assess your home's layout, cooling needs, and budget to recommend the right solution for you.
Schedule mini split installation in the Twin Cities by calling (763) 244-1800 today.
Schedule OnlineFrequently Asked Questions
Yes, most models are technically heat pumps, meaning they both heat and cool. Ductless mini split installers in St. Paul almost always installs models that provide both heating and cooling.
Yes, on average ENERGY STAR certified mini splits use up to 60% less energy than traditional home radiators.
A single ductless mini split air conditioner can cool an entire house if the doors are left open and the unit is sized appropriately for the space. It’s more typical to have a multi-zoned heating system where several mini splits cool different areas of the house.


