Central AC vs. Ductless Mini-Split: What’s Best for Your Home?
Thinking about upgrading your air conditioning system? Whether you’re building, renovating, or just tired of sweating through the summer, choosing the right AC system is key to staying comfortable and energy-efficient in Northern Ontario.
The two most popular options for homeowners in Sault Ste. Marie and the Algoma Region are central air conditioning and ductless mini-splits — but which one is better for your home?
In this post, we break down the pros, cons, and key differences to help you make the right choice.
What Is Central Air Conditioning?
Central AC systems use ductwork to deliver cool air throughout your entire home. They’re typically paired with a furnace or air handler and are best suited for homes that already have existing ductwork in place.
Pros:
Whole-home cooling from a single system
Cleaner aesthetic — no visible wall units
Works with smart thermostats and zoning systems
Great for open-concept and multi-floor layouts
Cons:
Requires ductwork (adds cost to retrofits)
Ducts can leak and waste energy over time
Can be less efficient if cooling is only needed in part of the home
What Is a Ductless Mini-Split System?
Mini-splits use an outdoor compressor and one or more indoor wall-mounted units to cool specific areas — without the need for ducts. They're ideal for additions, older homes, or rooms that don’t cool well with central systems.
Pros:
No ductwork needed — easy installation
Zoned cooling – control each room independently
Super energy-efficient, especially for smaller homes or cottages
Great for older homes in Sault with boiler or baseboard heating
Cons:
Indoor units are visible
May require multiple heads to cool an entire home
Higher upfront cost per room (but can be offset by rebates)
Which Is Best for Your Home?
FeatureCentral ACMini-SplitRequires ductwork✅ Yes❌ NoWhole-home cooling✅ Best for large homes⚠️ Requires multiple unitsEnergy efficiency⚠️ Depends on ducts✅ Very highRoom-by-room control❌ Limited✅ YesCost$$ (mid-range)$$–$$$ (room-based)Rebates available?✅ Sometimes✅ Up to $6,500 in Ontario
Local Considerations for Northern Ontario Homes:
Older homes with no ductwork? → Ductless is the clear choice
Renovating or replacing a furnace? → Central AC may integrate seamlessly
Only want to cool 1–2 rooms? → Mini-splits are the efficient winner
Need both heating and cooling? → A ductless heat pump may be your best option
Not Sure What You Need? We’ll Help You Decide
At Stellar Comfort, we assess your home, comfort goals, and budget to help you choose the perfect AC solution — whether that’s central, ductless, or a hybrid system.
We also:
Handle full installations
Help you access rebates & financing
Offer free quotes with no pressure