--- title: 'Dishwasher Installation and Replacement in Montreal' url: 'https://www.plomberie5etoiles.com/en/dishwasher-installation' markdown: 'https://www.plomberie5etoiles.com/en/dishwasher-installation.md' lang: en date: '2026-05-11' description: 'Fast and Reliable Dishwasher Replacement and Installation Installing a dishwasher involves three separate connections: water supply, drain, and electrical. When all three are done correctly and to code, a built-in dishwasher runs quietly, drains cleanly, and gives no trouble for years. When any on…' --- Plomberie 5 Etoiles Montreal # Dishwasher Installation and Replacement in Montreal Dishwasher installation and hookups (supply, drain, electrical) by experienced technicians across Greater Montreal. 4.8 / 5 Google Urgence 24/7 Montreal et region **+110 avis verifies** ## Fast and Reliable Dishwasher Replacement and Installation ![dishwasher-installation-services](https://www.plomberie5etoiles.com/images/d/i/s/h/w/dishwasher-installation-services-717617a3.webp?g-b1ebab99 "dishwasher-installation-services") Installing a dishwasher involves three separate connections: water supply, drain, and electrical. When all three are done correctly and to code, a built-in dishwasher runs quietly, drains cleanly, and gives no trouble for years. When any one of them is done poorly, you end up with leaks under the cabinet, drain backflow into the unit, or an electrical connection that fails inspection. **Plomberie 5 Etoiles** handles the plumbing side of dishwasher installations across Montreal, Laval, the South Shore, and the North Shore, for both replacements and new hookups. **RBQ Licensed (#5663-4538-01) · CMMTQ Member · CAA-Quebec Recommended · 4.8 Stars, 150+ Google Reviews** [Get A Quote](https://www.plomberie5etoiles.com/en/schedule-plumber)[Click To Call](tel:5144473700)--- Customer Reviews ![Vertigo Stardust](https://lh3.googleusercontent.com/a-/ALV-UjX6hRmaXkybnk-TTVIZ2KebCIHvhzQqBu4K55sa6xb0pWlY7dU=s64-c-rp-mo-ba12-br100) Vertigo Stardust 7 years ago Well done guys, they've earned their 5 stars My kitchen sink wasn't flushing despite the underneath pipes being clean. My basement toilet was out of order. I called them at 9:30am, the man clearly explained the fees wit… [Read on Google](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUQwNmZQcktREAE!2m1!1s0x0:0xe8577a595261d74f!3m1!1s2@1:CIHM0ogKEICAgID06fPrKQ%7C%7C?hl=fr-CA) ![Lison Côté](https://lh3.googleusercontent.com/a/ACg8ocK4vgy9PzgS2__E76I34W7FqlW2CGcPEyr3XHY4Tef3M_adBw=s64-c-rp-mo-br100) Lison Côté 9 months ago Fast, friendly, and professional service. Wow. Thank you. [Read on Google](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21GNmN6bEZXWEpxUTBGb1EweDFkRnBYUzJKNGFGRRAB!2m1!1s0x0:0xe8577a595261d74f!3m1!1s2@1:CAIQACodChtycF9oOmF6czlFWXJqQ0FoQ0x1dFpXS2J4aFE%7C%7C?hl=fr-CA) ![Laurence Corbeil](https://lh3.googleusercontent.com/a/ACg8ocJCmTUaFDMGpoZHdZENcpfu7u2pZlmYolLEl72K6c8upl1RhA=s64-c-rp-mo-br100) Laurence Corbeil 11 months ago The service was good and fast, with relevant advice. [Read on Google](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pOeFpIZDFWVkYzT1U1VmNHMXhNWE5TWVRjemQzYxAB!2m1!1s0x0:0xe8577a595261d74f!3m1!1s2@1:CAIQACodChtycF9oOjNxZHd1VVF3OU5VcG1xMXNSYTczd3c%7C%7C?hl=fr-CA) ![Yann Laliberte](https://lh3.googleusercontent.com/a-/ALV-UjVuIJ9qH2b3FDTzfGZkgvOpjQyToKom_gIEgSoIGRBCDe5AelsZcQ=s64-c-rp-mo-ba3-br100) Yann Laliberte 9 months ago Courteous, fast, and professional. Thank you. [Read on Google](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT21sUlJGcEJWV1UzYm0xS2NYUkNRa04zY3kwM01YYxAB!2m1!1s0x0:0xe8577a595261d74f!3m1!1s2@1:CAIQACodChtycF9oOmlRRFpBVWU3bm1KcXRCQkN3cy03MXc%7C%7C?hl=fr-CA) ![Chantal Labelle](https://lh3.googleusercontent.com/a/ACg8ocJuo-iPl0YTdXExUDJ1P-klmq0YSn5iFDXynBZc92aZmIaQxQ=s64-c-rp-mo-br100) Chantal Labelle 1 year ago Very good service, fast, efficient, and courteous. I highly recommend them. Thank you :) [Read on Google](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnTURJNzVxQU1nEAE!2m1!1s0x0:0xe8577a595261d74f!3m1!1s2@1:CIHM0ogKEICAgMDI75qAMg%7C%7C?hl=fr-CA) ![Claude Massy](https://lh3.googleusercontent.com/a-/ALV-UjUc8n83Q72QK6wlgg4FaPCh5V_yMitbPujm68KO7qxMLZ7-owBkAg=s64-c-rp-mo-ba2-br100) Claude Massy 2 years ago Great camera inspection, even earlier than scheduled. Very friendly and gave clear explanations of the work. I truly recommend them. My plumber was Zoiubir. Thanks to Alex. [Read on Google](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNuck9HWXlBRRAB!2m1!1s0x0:0xe8577a595261d74f!3m1!1s2@1:CIHM0ogKEICAgICnrOGYyAE%7C%7C?hl=fr-CA) [See all Google reviews](https://maps.app.goo.gl/nyAfCnzjv1Zy714s8) --- ## Why a Licensed Plumber Matters for Dishwasher Installation Many appliance retailers and big-box stores offer dishwasher installation as an add-on to delivery. These services typically cover a straightforward swap of an existing unit in a detached house, and they explicitly exclude condos, duplexes, and multi-unit residential buildings where a licensed plumber is required. If you live in a Montreal condo, a duplex, or a triplex, you likely need a licensed RBQ plumber for any work involving water connections. We are RBQ licensed (#5663-4538-01), carry full liability insurance, and can provide documentation of the work for your condo board or building management if needed. Beyond licensing, a plumber brings the diagnostic experience to identify and address any complications before they become problems: an undersized supply valve, a drain connection that needs an air gap, or a cabinet that needs modification to fit the new unit. [Get A Quote](https://www.plomberie5etoiles.com/en/schedule-plumber)[Click To Call](tel:5144473700)--- ## What Dishwasher Installation Involves ### Replacing an Existing Dishwasher Replacing an existing unit is the most straightforward scenario. The supply, drain, and electrical connections are already in place. Our process: 1. Disconnect the existing dishwasher (supply shutoff, drain hose, electrical) 2. Remove the old unit from the cabinet space 3. Check the supply valve condition (seized or corroded valves are replaced at the same time) 4. Inspect the drain connection and confirm it is looped correctly to prevent backflow 5. Slide in the new unit, connect water supply using a braided stainless steel hose 6. Connect the drain to the sink drain tailpiece or garbage disposal inlet 7. Make the electrical connection (hardwired or corded depending on the model) 8. Level the unit in the cabinet opening and secure to the countertop per manufacturer specifications (note: we do not drill into granite, quartz, or stone countertops) 9. Run the dishwasher through a full cycle while checking all connections for leaks Total time for a standard replacement with no complications: 1 to 2 hours. ### Installing a Dishwasher Where There Was None Before Adding a dishwasher to a kitchen that has never had one involves more work than a simple swap. Requirements include: **Supply line:** A hot water supply line must be extended from the kitchen sink supply and fitted with a new shutoff valve. In most Montreal kitchens this runs from the connections under the sink to the dishwasher position. **Drain connection:** A drain hose from the dishwasher connects to either the garbage disposal inlet (if present) or a dedicated wye fitting on the sink drain tailpiece. The drain hose must be looped up to the underside of the counter before dropping down to the connection point. This high-loop or air-gap configuration prevents drain water from siphoning back into the dishwasher. **Electrical:** A dishwasher requires a dedicated 15 or 20-amp circuit. If one does not exist, an electrician is needed before our work begins. We can advise on sequencing if you are coordinating both trades. **Cabinet space:** A standard dishwasher requires a 24-inch-wide, 34.5-inch-high, 24-inch-deep opening. If the cabinet opening needs to be modified, this is typically done before we arrive. We assess all of these requirements during an on-site evaluation and give you a clear scope and price before any work begins. [Get A Quote](https://www.plomberie5etoiles.com/en/schedule-plumber)[Click To Call](tel:5144473700)--- ## Dishwasher Installation in Montreal Condos and Multi-Unit Buildings This is a category that appliance retailers often cannot handle. Condos and multi-unit buildings in Montreal have specific requirements that make a licensed plumber necessary rather than optional. **Building shutoff coordination.** In some Montreal condo buildings, the unit-level hot water shutoff is not easily accessible, and shutting off water for the installation may require coordinating with building management or using the building's main supply valve. We have experience navigating these situations and can communicate directly with building management when needed. **Documentation for condo boards.** Many condo associations in Montreal require that plumbing work be performed by a licensed contractor and that documentation be provided before work begins or after completion. We provide a written record of the work performed, confirmation of our RBQ license, and insurance documentation on request. **Drain stack connections.** In some older Montreal multi-unit buildings, the kitchen drain connects directly to a shared vertical stack rather than to a P-trap under the sink. Connecting a dishwasher drain to this type of configuration requires a specific approach to prevent drain backflow and sewer gas from entering the unit. We have handled this in Plateau triplexes, Rosemont duplexes, and downtown condo towers. --- ## What We Include as Standard On every dishwasher installation we: - Replace the supply shutoff valve if it is seized, corroded, or more than 10 years old - Use braided stainless steel supply hose (not rubber or PVC) - Confirm correct drain high-loop or air-gap configuration - Level the unit in the cabinet opening - Run a full cycle before leaving to confirm no leaks at any connection - Remove and dispose of the old unit on replacement jobs (confirm at booking) --- ## Dishwasher Types We Install We install all built-in dishwasher configurations: **Standard built-in (under-counter):** The most common type in Montreal homes and condos. Fits in a standard 24-inch cabinet opening. **Panel-ready dishwashers:** The dishwasher front accepts a custom panel that matches the surrounding cabinetry. Installation requires careful alignment so the panel sits flush with adjacent cabinet doors. We take the time to get this right. **Compact dishwashers (18-inch):** Smaller units for apartments, condos, and kitchens with limited space. Supply, drain, and electrical requirements are the same as standard units. **Countertop and portable dishwashers:** These connect to a faucet aerator adapter rather than a dedicated supply line. We can install the faucet adapter and confirm drain connection if the unit drains into the sink. [Get A Quote](https://www.plomberie5etoiles.com/en/schedule-plumber)[Click To Call](tel:5144473700)--- ## Hard Water Considerations in Montreal Montreal's moderately hard water affects dishwasher performance and longevity over time. A few notes: The hot water supply to the dishwasher should come from the kitchen hot water line, not a cold line. Some older Montreal kitchens were plumbed with the dishwasher supply tapping off the cold water line, which increases cycle time and reduces cleaning performance. Hard water causes scale buildup on the heating element, spray arms, and interior surfaces over time. Using a dishwasher-specific descaling product every few months extends the life of the unit and maintains wash performance. If your previous dishwasher developed mineral staining on the interior in the first year or two, a water softener under the sink may be worth considering. --- [CAA recommended](https://www.caaquebec.com/fr/habitation/entreprises-recommandees/plomberie-5-etoiles-inc-drain-5-etoiles) We have been recommended by CAA-Québec for over 10 years [CMMTQ](https://www.cmmtq.org/boutique/membre_cmmtq.php?id=1131) Plomberie 5 Étoiles is a member of the Corporation des maîtres mécaniciens en tuyauterie du Québec [![Régie du bâtiment du Québec](https://www.plomberie5etoiles.com/user/pages/01.home/03._certifications/rbq.webp "RBQ")](https://www.pes.rbq.gouv.qc.ca/RegistreLicences/FicheDetenteur/5663453801?mode=Entreprise) [RBQ](https://www.pes.rbq.gouv.qc.ca/RegistreLicences/FicheDetenteur/5663453801?mode=Entreprise) We are licensed by the Régie du bâtiment du Québec [![Home Depot Pro recommended](https://www.plomberie5etoiles.com/user/pages/01.home/03._certifications/The_Home_Depot_Pro_logo.png "Home Depot Pro")](https://www.homedepot.ca/) [Home Depot Pro](https://www.homedepot.ca/) Home Depot Pro partner [![AECQ](https://www.plomberie5etoiles.com/user/pages/01.home/03._certifications/aecq.webp "AECQ")](https://www.aecq.org/) [AECQ](https://www.aecq.org/) Member of the Association des entrepreneurs en construction du Québec (AECQ) [![Three Best Rated certificate for Plomberie 5 Étoiles](https://www.plomberie5etoiles.com/user/pages/01.home/03._certifications/three-best-rated-plomberie5etoiles-blainville.png "Three Best Rated")](https://threebestrated.ca/plumbers-in-blainville-qc) [Three Best Rated](https://threebestrated.ca/plumbers-in-blainville-qc) Among the top three plumbers according to Three Best Rated --- ## Why Choose Plomberie 5 Etoiles for Dishwasher Installation **RBQ licensed, which matters in condos and multi-unit buildings.** Big-box retailer installation services explicitly exclude condos and multi-unit buildings that require a licensed plumber. We handle these regularly. **We check the supply valve on every job.** A seized shut-off valve found during a dishwasher installation is replaced the same day. Finding it then is better than finding it during a future emergency. **Braided stainless steel supply hose as standard.** Rubber supply hoses fail. We do not use them. **Full-cycle test before we leave.** We run a complete cycle and verify no leaks at any connection before packing up. **15 years in Montreal homes.** We have installed dishwashers in Plateau triplexes where the drain connects to a cast iron stack, Griffintown condos with restricted access panels, NDG bungalows adding a dishwasher for the first time, and South Shore homes replacing units after renovation. We know what to expect in each type of property. **CAA-Quebec recommended for 10+ years. 4.8 stars on Google. RBQ #5663-4538-01. CMMTQ Member.** --- ## Get a Free Estimate 📞 **Call: [514-447-3700](tel:5144473700)**📋 **[Request a Free Estimate Online](https://www.plomberie5etoiles.com/en/schedule-plumber)** *Serving Montreal, Laval, the South Shore, the North Shore, and the West Island.* --- ## Related Services - [Faucet and Sink Installation](https://www.plomberie5etoiles.com/en/sinks-faucets) - [Garbage Disposal Installation](https://www.plomberie5etoiles.com/en/garbage-disposals) - [Kitchen Drain Cleaning](https://www.plomberie5etoiles.com/en/kitchen-drain-cleaning) - [Water Line and Pipe Repair](https://www.plomberie5etoiles.com/en/water-leak-repair) - [Toilet Installation](https://www.plomberie5etoiles.com/en/toilets) - [Residential Plumbing Services](https://www.plomberie5etoiles.com/en/residential-plumbing) - [Plumber in Montreal](https://www.plomberie5etoiles.com/en/plumber-montreal) [Get A Quote](https://www.plomberie5etoiles.com/en/schedule-plumber)[Click To Call](tel:5144473700)--- Areas we Serve 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[Get A Quote](https://www.plomberie5etoiles.com/en/schedule-plumber) [Click To Call](tel:5144473700) ##### FAQ ### Do you offer dishwasher installation services? Yes. We provide complete residential dishwasher installation services. Whether you are replacing an old unit or installing a new one, we ensure all water supply and drainage connections are done properly and leak-free. ### Can you install a dishwasher if the connections are not already in place? Yes. If the required plumbing connections are not in place, we can modify your plumbing system to add the necessary water supply and drainage to safely install your dishwasher. ### How long does a dishwasher installation take? Most dishwasher installations take between 1 and 2 hours when the connections are already in place. If modifications are required, the duration may vary depending on the complexity of the work. ### Do you remove the old dishwasher? We can disconnect and remove your existing dishwasher. However, disposal may depend on your local waste collection services. We can guide you on the best way to dispose of your old appliance. ### Do you install all types of dishwashers? Yes. We install all types of residential dishwashers, including standard built-in units and high-end models. We ensure the installation meets plumbing codes and manufacturer specifications. ### What should I do if my dishwasher is leaking? A leaking dishwasher can be caused by faulty connections, a damaged drain hose, or the appliance itself. We can quickly inspect the issue, identify the source, and perform the necessary plumbing repairs to prevent damage to your cabinets and flooring. ### Do you repair dishwashers? We handle plumbing-related issues such as leaks, water supply lines, and drainage problems. For internal appliance repairs, we recommend contacting a certified appliance technician. ### Do you offer dishwasher installation in Laval and on the South Shore? Yes. We provide dishwasher installation and plumbing services in Montreal, Laval, Longueuil, Brossard, Terrebonne, Blainville and throughout the greater Montreal area. Call 514-447-3700 to schedule an appointment. --- ## Contact Plomberie 5 Étoiles - Phone (24/7): 514-447-3700 - Email: info@plomberie5etoiles.com - Request a quote: https://www.plomberie5etoiles.com/en/schedule-plumber - Service area: Montreal, Laval, South Shore and North Shore (Quebec, Canada) --- ## Navigation - Previous: [Faucet and Sink Installation and Replacement in Montreal](https://www.plomberie5etoiles.com/en/sinks-faucets.md) - Next: [Water Heater Installation and Replacement Service](https://www.plomberie5etoiles.com/en/water-heater-installation.md)