Decision guide
Both technologies move heat the same way. The difference is in the delivery system — and the right choice depends entirely on your home\'s current setup. This guide walks through the decision in plain English.
| Factor | Ducted (central) | Ductless (mini-split) |
|---|---|---|
| Installed cost (national avg) | $14,000–$18,000 | $3,500–$15,000 (1-4 heads) |
| Installed cost (Ontario) | $5,000–$9,000 | $3,500–$12,000 |
| Install time | 1-2 days | 1 day (single) / 2-3 days (multi) |
| Existing ducts required | Yes (or expensive to retrofit) | No |
| Per-room control | One thermostat (whole-home) | One thermostat per indoor head |
| Visible indoor units | None (uses vents) | 1 wall-mounted head per zone |
| Duct losses | 10-30% (sealing reduces this) | 0% (no ducts) |
| Cooling included | Yes (replaces AC condenser) | Yes (each head heats + cools) |
| Best Canadian rebate tier | Standard rebate amounts | Multi-zone qualifies for highest rebate tiers in Maritimes |
| Aesthetic impact | Invisible | Indoor heads visible (white/off-white) |
| Sound levels | Air handler in basement/closet (quiet) | Indoor head 19-30 dBA (whisper quiet) |
You can mix both — a ducted central heat pump for the main floor plus ductless heads for awkward rooms (finished basement, garage office, third-floor bedroom). This is common in older Canadian homes that have partial ductwork. Total install cost typically lands at $18,000-$25,000, and the operating economics are excellent because each zone is sized appropriately.
A good installer will recommend hybrid only when it makes sense. If they push hybrid as the default, get a second opinion — it\'s often more system than you need.
In the Maritimes (Nova Scotia, New Brunswick, PEI, Newfoundland), the Oil-to-Heat-Pump Affordability Program funds ductless multi-zone systems specifically — because most oil-heated Maritime homes don\'t have ductwork. If you\'re in the Maritimes and currently use oil, ductless is the default answer regardless of preference. The economics and rebate stack don\'t support ducted retrofits in these provinces unless you\'ve already added ductwork for another reason.
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Generally yes for the install itself. A single-zone ductless system runs $3,500-$6,000 vs. $14,000-$18,000 for a ducted system nationally ($5,000-$9,000 in Ontario). However, when you need whole-home coverage, a 3-4 head multi-zone ductless system ($10,000-$15,000) is comparable to a ducted retrofit. Ductless wins on cost only if you're working with existing electric/oil heat (no ductwork to leverage).
Yes, and it's a common upgrade. Adding a single ductless head to an awkward room (basement office, garage, sunroom, addition) costs $3,500-$5,000 and gives you independent control of that space without modifying your existing ducted system. This is the cheapest path to "fix one cold room" without redoing the whole HVAC system.
Modern ductless systems usually win on raw efficiency ratings (SEER, HSPF) because there's no duct loss. Ducted systems lose 10-30% of conditioned air to leaks and uninsulated runs. However, a brand-new high-quality ducted system with sealed, insulated ducts can match a ductless system's real-world efficiency. The bigger efficiency factor is cold-climate certification (HSPF 10+) — both types should meet this in Canada.
They're thinner than a flat-screen TV (about 8" deep) and come in white or off-white. Most homeowners mount them above eye level so they're unobtrusive. If aesthetics are a hard constraint, ask about "concealed-duct" or "cassette" mini-splits — they install in ceilings or short ductwork and look like flush vents.
Both types add value, but ducted heat pumps integrate more invisibly into the home and tend to add slightly more to resale ($15K-$25K typical). Visible ductless heads in main living areas are sometimes a minor friction with traditional buyers. But for energy-conscious buyers, both types are equally appealing.
