Central AC vs ductless mini-split - which is better

Central AC is better for whole-home cooling with existing ductwork, while ductless mini-splits excel for targeted cooling, homes without ducts, or adding AC to specific areas. The choice depends on your home's layout, existing HVAC infrastructure, and cooling needs.

Central air conditioning works through your existing furnace ductwork to cool your entire home evenly. It's ideal if you already have a forced-air heating system, as it uses the same ducts and provides consistent temperatures throughout all rooms. Central AC also maintains better humidity control and air filtration when properly maintained. In Ottawa's climate, central AC pairs well with your existing furnace system for year-round comfort.

Ductless mini-splits consist of an outdoor unit connected to one or more indoor wall-mounted units. They're perfect for homes without existing ductwork, older homes where adding ducts would be expensive or impractical, or for cooling specific zones like finished basements or additions. Mini-splits are typically more energy-efficient than central AC because there's no duct loss, and they offer individual room temperature control. Many newer models also provide heating, making them versatile for Ottawa's climate.

Cost considerations in Ottawa show central AC installation ranging from $4,000-$6,000 when ductwork exists, while mini-split systems cost $3,500-$6,000 depending on the number of indoor units needed. However, if you need to install new ductwork for central AC, costs can increase significantly.

Safety and maintenance requirements are similar for both systems, though mini-splits require cleaning of individual indoor unit filters, while central AC uses your furnace's filtration system. Both should receive annual professional maintenance to ensure safe, efficient operation and prevent issues like refrigerant leaks.

For a personalized assessment of which system works best for your Ottawa home's specific layout and needs, consider a free consultation with Ottawa HVAC Pro to evaluate your options.

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