Upgrading your kitchen with a new dishwasher is a smart move—saving time, water, and energy. However, the installation process must be done precisely to avoid water damage, electrical risks, or poor drainage. At Citywide Plumbers, we specialise in dishwasher installation across London, offering safe, efficient and fully insured services with every detail handled professionally.
Here’s how our qualified plumbers get the job done—from arrival to the final test run.
1. Preparing the Kitchen Space
Before we install your new dishwasher, our team ensures the existing space is ready. If it's a replacement, we carefully disconnect the old unit without damaging surrounding cabinetry or plumbing. For new installations, we verify that all required connections—water supply, waste outlet and power—are available and compliant with regulations.
We take time to:
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Assess the cabinet opening (usually 600mm for standard dishwashers).
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Check for a nearby electrical socket and water isolation valve.
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Ensure the floor is level for smooth installation.
2. Water Supply Connection
One of the most important steps is connecting the water inlet hose to a reliable supply. Our team ensures:
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A suitable cold water connection is available and isolated.
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Compression fittings are used securely with PTFE tape where needed.
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A double check valve is fitted, preventing backflow and contamination.
Citywide Plumbers always double-check that the hose is not kinked or twisted, which could restrict flow or cause future damage.
3. Waste Water Discharge
Dishwasher drainage must comply with UK building regulations to avoid backflow or flooding. We connect the waste hose using one of two approved methods:
We ensure the waste hose has a high-loop or anti-syphon arrangement to prevent dirty water from being drawn back into the appliance—a detail many overlook, but we never miss.
4. Electrical Safety and Power Connection
Our plumbers coordinate with your existing power supply (usually a standard 13-amp socket under the counter). We check:
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The socket is protected by a suitable RCD.
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No trailing cables or overloaded extension leads are in use.
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All wiring is safe, undamaged and compliant with IET wiring regulations.
If hardwiring is needed, we arrange for a qualified electrician to carry it out safely.
5. Final Positioning and Testing
Once everything is connected, our team:
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Slides the dishwasher carefully into position.
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Ensures it’s level front-to-back and side-to-side using adjustable feet.
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Runs a full test cycle to check for leaks, drainage issues and proper heating.
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Shows the client how to use the unit safely and maintain it effectively.
We also remove all packaging, wipe down surfaces, and leave the area clean and tidy.
6. Why Choose Citywide Plumbers?
Every dishwasher installation by Citywide Plumbers is backed by decades of plumbing experience in London. We pride ourselves on:
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Prompt appointments and courteous service.
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No hidden costs – we offer transparent, upfront pricing.
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Fully insured workmanship.
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Emergency support if any issues arise post-installation.
We know that every home is different. That’s why our plumbers adapt to each kitchen setup, ensuring your dishwasher works seamlessly from day one.
7. Tips for Long-Term Dishwasher Health
To help your new appliance last longer, we recommend:
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Regularly cleaning the filter and spray arms.
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Using dishwasher salt and rinse aid as needed.
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Running a monthly hot cycle with a cleaning agent to reduce limescale build-up.
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Checking for leaks or odd noises – and calling us at the first sign of trouble.
Get in Touch with Citywide Plumbers
Need help installing a dishwasher or replacing an old one? Our friendly, professional team is ready to help. Whether it’s a quick fitting or a full kitchen upgrade, Citywide Plumbers delivers reliable plumbing solutions every time.
Call us today on 02038928545
Email: info@citywideplumbers.co.uk