Heat pump services · Duncan
Ductless Mini-Split Installation in Duncan
Single and multi-zone ductless systems, sized to a heat-loss calculation and installed by a CleanBC program-registered contractor.
Duncan Heat Pumps installs single- and multi-zone ductless mini-split systems across Duncan, North Cowichan and the Cowichan Valley, sized to a room-by-room heat-loss calculation and installed by a CleanBC program-registered contractor. A single-zone system typically runs $3,500 to $6,000, and a multi-zone system $8,000 to $15,000, before rebates.
A ductless mini-split heats and cools through one or more wall-mounted indoor heads connected to an outdoor unit, with no ductwork required. It suits additions, older homes without existing ducts, and any room or suite that a central system doesn't reach evenly. Each system is sized to a heat-loss calculation rather than a rule of thumb, and installation is carried out by a CleanBC program-registered contractor so the rebate paperwork is straightforward.
Ductless mini-split installation in Duncan typically runs $3,500 to $6,000 for a single-zone system, and $8,000 to $15,000 for a multi-zone system, before rebates.
How does a ductless system actually work?
A ductless mini-split moves heat between an outdoor compressor unit and one or more indoor heads through a small refrigerant line set, rather than through ductwork. Because there's no duct run to lose energy through, a correctly sized ductless system is an efficient way to heat a room, suite or addition that has no existing ducts.
Do you need single-zone or multi-zone?
A single-zone system pairs one outdoor unit with one indoor head, suited to a single room, suite or open space. A multi-zone system runs several indoor heads from one outdoor unit, each set to its own temperature, and covers more of your home without a central ducted system. Which configuration fits depends on your home's layout and which rooms need coverage.
How do we size your ductless system?
Duncan's winter design temperature is -6°C, with 2,980 heating degree-days below 18°C — a colder profile than much of the south Island. A heat-loss calculation sets your system's size against that design temperature and your room or home's insulation and window area, rather than against a general rule of thumb.
Ductless installation and CleanBC rebates
A ductless mini-split installed by a CleanBC program-registered contractor is eligible for CleanBC's Energy Savings Program, and Duncan and North Cowichan both add a $350 municipal top-up on qualifying electric heat pump installations. Eligibility and amounts depend on the system being replaced and household income.
The installation process
- 1
Free in-home assessment — a heat-loss calculation, head placement and zone plan, an electrical-panel check, and a rebate-eligibility review.
- 2
Flat-rate quote — we size the system per zone and itemise it in writing.
- 3
Installation — a refrigerant line set run to each indoor head, the outdoor unit sited and connected, and most single-zone jobs completed in a day.
- 4
Start-up and rebate paperwork — commissioning, a walkthrough with you, and help submitting the CleanBC and municipal rebate paperwork.
Local conditions
Duncan's -6°C winter design temperature and 2,980 heating degree-days below 18°C mean a ductless system installed here is sized against a colder target than much of the south Island, not against a moderate fall or spring day. Cold-climate-rated equipment holds its output at that design temperature rather than tailing off as the outdoor temperature drops.
In practice
- Situation
- A Cowichan Valley addition with no ductwork was heated by a single electric baseboard and stayed cold through the winter.
- Complication
- A central ducted retrofit would have meant opening walls and ceilings to run new ductwork through a finished addition.
- Resolution
- A single-zone ductless mini-split, sized to a heat-loss calculation, was installed in one day with no ductwork required, and the room held a steady temperature through the following winter.
People also ask
Does a ductless mini-split provide air conditioning too?
Yes. A ductless heat pump both heats and cools, so it replaces a furnace and an air conditioner in one system.
How many rooms can one ductless system heat?
A multi-zone system runs several indoor heads from one outdoor unit, each set to its own zone and temperature.
Does a ductless mini-split qualify for CleanBC rebates?
Yes, when installed by a CleanBC program-registered contractor. Duncan and North Cowichan also add a $350 municipal top-up on qualifying installations.
Can a ductless system hold its heat at -6°C?
A cold-climate-rated ductless system is sized to Duncan's -6°C winter design temperature as part of the heat-loss calculation, not just to moderate conditions.
For related help, see ducted and central heat pump installation and fuel conversions, or compare typical prices in the heat pump cost guide.
Heat pumps in nearby communities
Keep exploring
- Compare heat pump costsTypical price ranges before and after rebates.
- Ducted & Central Heat Pump InstallationDucted and central heat pump installation in Duncan, sized for a -6°C winter design temperature, for homes with existing forced-air ductwork.
- Oil, Gas & Electric Baseboard ConversionsConverting an oil, gas or electric baseboard system to a heat pump in Duncan — which CleanBC or Home Renovation Rebate tier and permit apply.
- Duncan Heat Pumps home
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