Ductless installation
Ductless Mini Split Installation for Ontario Homes and Additions
No ducts needed. A ductless mini split heats and cools a room, a floor or a whole home, using a wall-mounted head and a compact outdoor unit.
- LayoutsSingle-zone and multi-zone
- Good forAdditions, condos and homes without ducts
- QuoteProvided after a site review
Serving the GTA and nearby OntarioScope
What the ductless install plan covers
- Single-zone systems for one room, a sunroom, a garage suite or an addition
- Multi-zone systems with several wall heads on one outdoor unit
- Wall-mounted head placement for airflow, clearances and sightlines
- Line set routing through walls and attics, or neatly covered on the exterior
- Condensate drain planning, with gravity drainage or a pump where needed
- Outdoor unit location: snow clearance, noise, service access and bylaws
- Dedicated electrical circuits sized to the equipment
- Winter operation settings and low-temperature data for the chosen model
Process
From room walk-through to first start-up
Every job starts with a conversation and a look at the equipment. You see the options in plain language before anything is booked.
- 1
Room-by-room load review
We walk the rooms you want to condition and note insulation, windows, doors and how the spaces connect. Each zone gets its own load review, so head capacity matches the room instead of a rule of thumb.
- 2
Head and outdoor unit placement
We pick head locations that spread air well and leave clear space around the unit. The outdoor unit goes where it can be serviced, stays clear of snow and drifts, and respects property lines and neighbours.
- 3
Installation and line set
Mounting plates are fixed, the wall is core drilled, and the line set, drain and communication wire are run. We pressure test the refrigerant lines and evacuate them before releasing the charge.
- 4
Electrical connection
Each outdoor unit needs a dedicated circuit and a disconnect. Electrical work is done by licensed electrical professionals or trade partners, with permits and ESA notification where required.
- 5
Commissioning and walkthrough
We test heating and cooling on every head, check drainage, and confirm the controls and remote settings. You get a walkthrough of modes, filters and what normal operation looks like.
In pictures
What this work looks like
Kelvin job photo
Kelvin job photo
Kelvin job photoPhotos from Kelvin Mechanical jobs in the GTA and nearby Ontario.
Good to know
Layouts and building types we plan for
A single-zone example
An attic bedroom or a rear addition where extending ducts is awkward. One head, one outdoor unit and its own controls handle the space independently of the rest of the house.
A multi-zone example
A main-floor living area, a bedroom and a basement room, each with a head set independently. The outdoor unit shares its capacity across the heads, so we check the combined loads and run lengths together.
Townhouse and condo considerations
Outdoor placement can be limited by balcony rules, condo board approval, property lines and routes through shared walls. We suggest confirming approvals before the install is booked.
Winter operation
Cold-climate ductless models are built for low temperatures, but output depends on the model and the conditions. We review the manufacturer data and talk through supplemental heat for the coldest days. For whole-home ducted options, see heat pump installation.
Rebates and quotes
Eligible Ontario customers may qualify for up to $7,500 depending on the program rules, equipment, property and funding available at the time. A ductless system must meet program conditions, and approval is not automatic. Check rebate eligibility first. Pricing varies with equipment, line set length, number of zones, installation complexity and warranty options; a quote follows a site review.
Ontario notes
Ductless heat pumps in Ontario: condos, additions and cold winters
Older homes without ducts
Many older Ontario homes heat with radiators or baseboards and have no ducts for cooling. A ductless system avoids opening walls and ceilings to run ducts. It can add cooling and a second heat source, while the existing system stays in place.
Secondary suites and fire separations
Basement apartments, garage suites and shared-wall homes can have fire separation rules. Line sets and drains that cross a fire separation may be restricted or need special sealing, and rules differ by municipality. We plan routes early and tell you what needs checking before work starts.
Condos, townhouses and bylaws
Outdoor placement can be limited by condo rules, balcony restrictions, property lines and noise bylaws. Approvals can take time, so confirm them before the install is booked. We help you plan an arrangement that can be approved.
Snow, wind and winter layout
The outdoor unit should sit above the snow line, clear of roof drip and drifts, with room for service. Indoor heads work well placed away from direct blasts at beds and desks. Placement affects comfort and winter performance, so it is planned room by room.
Equipment we install and service
Brand names and logos belong to their owners. Availability depends on the product line and region.
Customer reviews
What a customer says
Kelvin Mechanical recently installed a multi unit ductless heat pump at my father's house. From the very beginning, their representative Zia was patient, insightful and above all professional. He walked my father through sizing, prime placement, taking his time while doing so. Zia had even suggested and was able to secure a rebate to offset the installation. Though an older house with its share of challenges, the Kelvin Mechanical team got the job done, for a fair price, and made it look easy. 10/10 would recommend.
Five-star Google reviews, copied as written with shortened names. Read more reviews
Help centre
Questions about Ductless Installation
Can a ductless mini split be my only source of heat?
In some homes, yes, depending on the load, the low-temperature performance of the model and how the rooms connect. Many owners keep a furnace or baseboards for the coldest days. We talk this through during the site review.
How many heads do I need?
It depends on the layout, closed doors, heat loads and how you use each space, not on a head-per-room formula. A multi-zone outdoor unit also has a limit on connected capacity. A load review settles it.
Can I put a ductless system in a condo or townhouse?
Often, but approvals matter. Check your condo rules or property agreement for outdoor equipment, noise and wall penetrations. We help you plan an arrangement that can be approved.
Where does the condensate water go?
Cooling and dehumidifying produce condensate. The drain line is sloped to a suitable discharge point outdoors, or a small pump lifts it when gravity will not work. We plan this before drilling.
How long will the installation take?
Timing depends on equipment availability, site conditions, permits and project scope. A single-zone job is usually simpler than a multi-zone one. You will get a schedule after the site review, and you can start with Build My Quote.
Why do ductless installation quotes vary so much?
Pricing varies with equipment, line set length, the number of zones, wall penetrations, electrical needs and where the outdoor unit goes. A single-zone job is simpler than a multi-zone one with long runs. A quote follows a site review, so you compare like with like. Use Build My Quote to begin.
Can a ductless system heat a basement apartment or secondary suite in Ontario?
Often yes. A separate head and control can suit a suite that needs its own temperature. Secondary suites can have fire safety, separation and heating rules that differ by municipality, so check requirements before you commit. We review the space, the loads and the line set route at the site review.
How cold can a ductless mini split work in an Ontario winter?
Cold-climate models are designed to run at low outdoor temperatures, with reduced output as it gets colder. Check the manufacturer's data for rated capacity at your lowest design temperature. Many owners keep supplemental heat for extreme cold. We review the data for the model we propose.
Are ductless mini splits noisy?
Indoor heads are generally quiet at low speeds. Outdoor noise depends on the model and where the unit is placed, and bylaws or condo rules may apply. We avoid placing outdoor units under bedroom windows, and we consider neighbours as well.
Do I need a permit for a ductless mini split?
It depends on the municipality and the work. Some cities require an HVAC or building permit, and electrical work may need its own. Condos and townhouses often need approval for outdoor equipment. Rules differ and change, so we confirm what applies before work starts.
Can one outdoor unit serve several floors?
Yes, a multi-zone outdoor unit can connect several heads on different floors, subject to the line set length, height and capacity limits of the model. We check combined loads and routes together. A load review shows whether one outdoor unit is enough.
Is a ductless mini split better than adding ducts to an addition or basement?
Often it is less disruptive, since it needs only a small wall opening and no duct runs. Ducts allow central filtration and hidden outlets, which some homeowners prefer. It depends on the layout, ceiling height and your plans. We explain the trade-offs for your space.
Do ductless mini splits qualify for the Ontario heat pump rebate?
Eligible Ontario customers may qualify for up to $7,500 on qualifying heat pump equipment, depending on the program rules, equipment, property and funding available at the time. Whether a particular ductless model, zone layout or property qualifies is set by the program, so confirm before ordering.
Where we do this work
Ductless Installation in Toronto, the GTA and Hamilton
Toronto Mississauga Brampton Vaughan Markham Oakville Burlington Hamilton All service areas Heating and cooling services
Quote and booking
Request: Ductless Installation
Share a few details and we will follow up. A written quote comes after a site review. There is no online checkout.
- City and service type help us route your request
- Urgency and property details let us prepare properly
- Optional equipment photos speed up repairs and replacements
Prefer to talk? +1 905-407-7353
Gas smell or carbon monoxide alarm? Leave the building and call 911 first. Do not use this form.