Dishwasher Installation Cost in Canada: 2026 Price Guide

Dishwasher installation costs $150 to $400 in Canada for a straight replacement, and $350 to $800 when new plumbing or electrical work is involved. Most homeowners swapping an old unit for a new one in the same spot pay between $200 and $350.

The spread is wide because two very different jobs share the same name. Sliding a new dishwasher into an existing opening takes under two hours. Creating a dishwasher location where none existed means cutting cabinetry, running a water line, adding a drain connection and installing a dedicated circuit.

How much does dishwasher installation cost?

Source: Rénovation Jean Poitras inc

Cost by Scenario

Installation labour is separate from the appliance itself. A retail dishwasher runs $300 to $1,500 depending on brand and features, and the installation figures above sit on top of that.

Typical Cost by Province

Ontario is the most expensive province, and the reason is regulatory rather than market-driven. The Ontario Building Code's plumbing provisions mean dishwasher installations often require a licensed contractor, particularly in Toronto where municipal inspections are common. The Electrical Safety Authority also requires certified technicians for many appliance connections.

Alberta's Safety Codes Council permits more flexible installer qualifications, allowing appliance specialists to handle basic connections. That's why the same job costs half as much in Calgary as in Toronto.

Retailer Installation Pricing

Big-box retailers bundle installation with the appliance purchase, which is often the cheapest route for a straight replacement.

Home Depot Canada offers basic installation added at checkout, completed in two hours or less, backed by a one-year labour warranty. Haul-away of the old unit is not included and costs $45 plus tax when added to an installation appointment, or $20 as a flat fee if you're taking delivery without installation.

The catch is eligibility. Retailer installation applies only when the new dishwasher is the same size going into the same location, you don't live in a multi-unit building requiring a licensed plumber, a 120-volt outlet already exists, and the floor hasn't been raised since the old unit went in. Fail any of those and the job goes to an independent contractor at independent contractor rates.

New Installation vs Replacement

Source: Eastern Western Construction LTD

This distinction drives more of your cost than anything else.

A Straight Replacement

The water supply, drain line and electrical connections are already in place. The installer disconnects the old unit, slides the new one in, connects three fittings, levels it and tests. $150 to $350 in most of Canada.

Where it gets more expensive: if the old unit was installed badly, the fittings are corroded, or the opening size doesn't match the new appliance. A dishwasher that's been in place fifteen years often leaves behind a shut-off valve that won't turn and a drain connection that has to be rebuilt.

A First-Time Install

Creating a dishwasher location where none existed is a different project. $350 to $800, and higher if cabinetry work is extensive.

The work involves:

• Cabinetry opening: Cutting a standard 24-inch opening into an existing run, which may mean removing a cabinet and refinishing the surrounding faces.

• Water supply: Running a new line from under the sink, usually with a dedicated shut-off valve.

• Drain connection: Tying into the sink drain or garburator, with a high loop or air gap to prevent backflow.

• Electrical work: Installing a 120-volt outlet on a dedicated 15-amp circuit. Adding or rewiring an outlet runs $150 to $500.

• Countertop cut: Occasionally required if the counter overhangs the opening.

Which Is the Better Investment

A first-time install carries a higher upfront cost but adds a permanent fixture to the kitchen. If you're already renovating, doing it while the cabinetry is open costs a fraction of what it will later.

If you're replacing, the calculation is simpler: the labour is modest enough that professional installation is rarely worth avoiding.

What's Included in Installation Service

A standard installation should cover:

• Removal of the old dishwasher, disconnected and pulled out

• Positioning and levelling the new unit in the opening

• Water supply connection to the existing shut-off valve

• Drain line connection to the sink drain or garburator

• Electrical hookup to the existing outlet or junction box

• Securing the unit to the countertop or cabinet

• Testing a full cycle and checking for leaks

• Packaging removal from the installation site

What's usually excluded: haul-away of the old unit, any plumbing modification beyond connecting to existing fittings, electrical work, cabinet adjustments, and countertop modification.

Confirm these before booking. An installer who arrives to find the shut-off valve seized or the outlet missing will either charge for the extra work or reschedule.

When a Plumber Is Required

Source: Reno Quotes

Not every dishwasher installation needs a licensed plumbing contractor, but more do than homeowners expect.

When an Appliance Installer Is Enough

A like-for-like replacement in a single-family home, where existing plumbing and electrical connections are sound and the new unit matches the old in size, is standard appliance installer work. This covers the majority of installations.

When You Need a Licensed Plumber

• New plumbing is required, meaning a water supply line or drain connection that doesn't yet exist.

• Existing plumbing needs modification, including moving the shut-off valve or rebuilding the drain tie-in.

• You live in a condo or multi-unit building. Most require a licensed plumbing contractor as a condition of the building's insurance, and retailer installation services won't take these jobs.

• The dishwasher is moving to a new location, which almost always means new supply and drainage.

• Your municipality requires inspection, which is common in Toronto and some other Ontario cities.

Electrical work is its own category. Installing or rewiring an outlet requires a licensed electrician in most provinces, and the Electrical Safety Authority enforces this in Ontario.

Why It Matters Beyond the Cost 

Three things depend on proper installation, and all three cost more than the plumber would have:

• Leaks are the obvious risk. A dishwasher supply line under pressure behind a cabinet can run for days before anyone notices, and the damage reaches the subfloor and the ceiling below.

• Insurance issues follow from that. Many homeowner policies require licensed work on plumbing connections to honour a water-damage claim.

• Warranties on the appliance itself frequently require professional installation, and manufacturers do ask for proof when a claim comes in.

Failed inspections are the fourth, applicable where municipal inspection is required. Work that doesn't pass has to be redone, usually by someone else.

Old Dishwasher Disposal Costs

Removing the old dishwasher and getting rid of it are two separate things, and quotes frequently cover the first without the second.

Municipal programs are the cheapest route if you can transport it. Most Canadian cities accept appliances through bulk waste pickup or at a transfer station, though many require scheduling in advance and some cap the number of items per year.

A dishwasher is mostly steel, so scrap yards will generally take it at no charge and occasionally pay a few dollars. That's only practical if you have a vehicle and the unit is already disconnected.

Check what your quote says. Some installers include removal and disposal, others include removal only and leave the old unit on your driveway.

Factors Affecting Installation Cost

Source: Brinq Construction

• Your existing setup: The single biggest variable. Sound plumbing, a working shut-off valve and a dedicated outlet keep you at the low end. Any of those missing moves you up a tier.

• Replacement versus new installation: The difference between a two-hour job and a half-day project.

• Opening size: If the new dishwasher doesn't match the old opening, cabinetry work is required. Standard dishwashers are 24 inches wide, but older kitchens sometimes have non-standard openings.

• Location: Ontario runs highest because of regulatory requirements; Alberta lowest. Urban labour rates exceed rural ones within any province.

• Building type: Condos and multi-unit buildings almost always require a licensed plumber and sometimes building management approval.

• Accessibility: A dishwasher in an island, or one that has to travel up a narrow staircase, adds time.

• Removal and disposal: $20 to $100 depending on how it's handled.

• Additional changes: Countertop cuts, cabinet adjustments, new electrical, or relocating a garburator all add to the base price.

DIY Installation as a Cost-Saving Option

Source: A4 Group Construction Services Inc.

A like-for-like dishwasher replacement is one of the more approachable appliance jobs, and doing it yourself saves $150 to $350 in labour costs.

When DIY Is Reasonable

You're replacing an existing dishwasher in the same location, the shut-off valve turns freely, the drain connection is in good condition, a dedicated outlet is present, and the new unit matches the opening. That's a two-hour job with basic tools.

The Installation Process

1. Shut off the water at the valve under the sink, and cut power at the breaker.

2. Disconnect the old unit — water line, drain hose and electrical.

3. Remove the old dishwasher, unscrewing its mounting brackets from the countertop or cabinet first.

4. Check the space and confirm the new unit fits the opening.

5. Attach fittings to the new dishwasher before sliding it in, since access disappears once it's in place.

6. Slide it in and level it using the adjustable feet.

7. Connect the water supply, drain and electrical.

8. Secure the unit to the countertop or adjacent cabinets.

9. Restore water and power, then run a full cycle and check underneath for leaks.

Where DIY Goes Wrong

• The seized shut-off valve. Old valves frequently won't close, and forcing one can break it, turning a simple swap into an emergency plumbing call.

• The drain loop. The drain hose needs a high loop or air gap to prevent sink water siphoning back into the dishwasher. Skip it and the unit runs dirty.

• Levelling. An unlevel dishwasher doesn't drain properly and the door won't seal.

• Overtightening fittings. Cracked plastic connections leak slowly and behind the cabinet, where you won't see them for weeks.

When to Call a Professional Instead

Stop and hire someone if the job requires new plumbing or electrical work, if you live in a condo, if the opening needs cabinetry modification, if a countertop cut is involved, or if your appliance warranty specifies professional installation.

The saving on a straight replacement is real. On anything more complicated, the saving disappears the moment something goes wrong behind the cabinet.

What should you budget?

For most Canadian homeowners replacing an existing dishwasher, budget $200 to $350 for installation plus $20 to $100 for disposal of the old unit. A first-time installation requiring plumbing and electrical work runs $500 to $800.

Two questions determine where you land. Is everything already in place — water, drain and a dedicated outlet? And does your building or municipality require a licensed plumber? Confirm both before comparing quotes, since an installer who quotes on the assumption of a simple swap will revise it on arrival.

Frequently Asked Questions

How much does dishwasher installation cost in Canada?

$150 to $400 for a straight replacement, and $350 to $800 for a new installation requiring plumbing or electrical work. Ontario runs highest at $250 to $450 for replacements, while Alberta sits at $120 to $195.

How long does installation take?

Under two hours for a standard replacement where connections are already in place. A first-time installation requiring cabinetry work, new plumbing or a new circuit takes half a day or longer.

Do I need a plumber to install a dishwasher?

Not for a like-for-like replacement in a single-family home with sound existing connections. You do need one for new plumbing, for a relocation, in most condos and multi-unit buildings, and where your municipality requires inspection.

Is dishwasher installation included when I buy the appliance?

Not automatically. Retailers offer it as a paid add-on at checkout, typically for straight replacements only. Haul-away of the old unit is a separate charge, usually $20 to $45.

What does it cost to remove my old dishwasher?

$20 to $45 through a retailer, $50 to $100 through an independent installer, or free to $30 through municipal bulk pickup. Scrap yards accept appliances at no charge if you can transport the unit yourself.

What electrical requirements does a dishwasher have?

A 120-volt outlet on a dedicated 15-amp circuit. If one doesn't exist, installing or rewiring it costs $150 to $500 and requires a licensed electrician in most provinces.

Can I install a dishwasher myself?

A like-for-like replacement is manageable with basic tools in about two hours, saving $150 to $350 in labour. Anything involving new plumbing, electrical work, cabinetry modification or a condo building should go to a professional. Check your warranty first, since some manufacturers require professional installation.

Why is dishwasher installation more expensive in Ontario?

Regulation rather than market rates. The Ontario Building Code's plumbing provisions mean many installations require a licensed contractor, and Toronto commonly requires municipal inspection. The Electrical Safety Authority also mandates certified technicians for many appliance connections.

What size is a standard dishwasher?

24 inches wide, which fits a standard cabinetry opening. Older kitchens occasionally have non-standard openings, in which case cabinetry work is required and the installation moves into the higher cost tier. Confirm your opening before ordering.

Is installation covered by a warranty?

Retailer installations typically carry a one-year labour warranty. Independent contractors vary, so ask what's covered and for how long. The appliance manufacturer's warranty is separate and frequently requires professional installation to remain valid.