--- title: "Cold Water Storage Tank Replacement | Northstar Plumbing" description: "Replace ageing cold water storage tanks with safe, correctly sized installation, leak testing and clear handover for reliable supply." canonical: "https://www.northstarplumbing.co.uk/services/cold-water-storage-tank-replacement" --- ![Cool-toned 3D render of an orderly utility space showing insulated pipes, a hot-water tank, manifold, unlit control panel, and tools, with wide framing and negative space.](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Flow_carbon_heating_infrastructure_3d_render.png%3Fv%3D1770397988042&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) Plumbing Installations & Replacements # Cold Water Storage Tank Replacement [Contact Us](https://www.northstarplumbing.co.uk/redirect) Cold water storage tank replacement is a planned service to remove an ageing, damaged or unsuitable tank and install a new unit that delivers a reliable, hygienic cold water supply. The work is completed with safe isolation and drainage, correct connections and fittings, and thorough leak testing before your system is put back into normal use. ## What cold water storage tank replacement covers A proper replacement is more than swapping the tank. It’s a controlled job that protects your pipework, reduces the risk of leaks, and ensures the tank is correctly installed for long-term use. - Isolating the supply and draining the existing tank safely - Removing and disposing of the old tank where possible - Supplying and fitting a correctly sized, suitable replacement tank - Renewing key fittings as needed (such as valves, outlets and connectors) - Connecting pipework securely and supporting the tank correctly - Refilling, bleeding air where required, and checking operation - Leak testing and final checks before handover ### When a replacement is the right option This service is most relevant if your current tank is cracked, leaking, heavily scaled, poorly supported, or missing basic hygiene protections such as a secure lid. It is also common when you are renovating a bathroom, upgrading pipework, or addressing ongoing issues like noisy filling, inconsistent flow, or repeated valve failures. Landlords and small commercial premises often replace tanks to improve reliability and reduce the chance of water damage, especially where tanks are older, undersized, or installed in awkward loft spaces. ### How the replacement is carried out Before work starts, the water supply is isolated and the system is drained in a controlled way. The old tank is disconnected and removed, then the new tank is positioned and supported correctly, with connections made using appropriate fittings. Once installed, the tank is refilled and checked for correct operation, with leak testing at joints and fittings. You will be advised of any related issues found during the work, such as worn isolation valves or pipework that may need attention to complete the job safely. ### After the job: checks, advice and next steps You will get a clear walkthrough of what was replaced and what was tested. If there are practical steps to help prevent future issues, such as improving insulation, securing the lid properly, or planning for access improvements, these will be explained so you can make an informed decision about next actions. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Client Reviews 5.0 Based on 2 reviews - E Emma H. > Booked an appointment for no hot water. Felt like a proper job, not a quick patch. Glad we went with them. - A Andrew C. > Reached out when we noticed no hot water. Worked neatly and left the area clean. The engineer was friendly, tidy and worked methodically. Would use them again. ## Frequently Asked Questions How do I know if my cold water storage tank needs replacing? Common signs include visible leaks, cracking, bowing sides, heavy scale, discoloured water, or a missing or poorly fitting lid. If the tank is poorly supported or the fittings keep failing, replacement is often the most reliable fix. A site check can confirm whether repair is viable. Will the water be turned off during the work? Yes, the supply is usually isolated and the tank drained to allow a safe changeover. You should expect a period without water to the outlets served by the tank. The expected downtime can be confirmed once access and the setup are assessed. Can you replace a tank in a loft with limited access? In many cases, yes, but access and safe working space need to be checked first. If the loft hatch, boarding, or headroom is restricted, you may be advised on practical access improvements. This helps the job be completed safely and reduces the chance of damage. Do you replace the float valve, overflow and fittings at the same time? Often, yes, as worn fittings are a common cause of noise, slow filling, and overflows. Replacing them during the tank change helps prevent call-backs and improves reliability. You will be told what is included before work starts. Could you change the system to mains pressure instead of a storage tank? Sometimes, depending on your existing plumbing layout, incoming mains pressure, and the hot water system. A conversion can be beneficial but may require additional pipework changes and components. If it is a sensible option, it can be discussed during the assessment. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Related Services Complete your experience with these services - Toilet Replacement [View](/services/toilet-replacement) - Toilet Installation [View](/services/toilet-installation) - Tap Replacement [View](/services/tap-replacement) - Tap Installation [View](/services/tap-installation) Show more services - Stopcock Installation [View](/services/stopcock-installation) - Shower Replacement (Non-Electric) [View](/services/shower-replacement-non-electric) - Shower Installation (Non-Electric) [View](/services/shower-installation-non-electric) - Radiator Replacement [View](/services/radiator-replacement) - Radiator Installation [View](/services/radiator-installation) - Outside Tap Replacement [View](/services/outside-tap-replacement) - Outside Tap Installation [View](/services/outside-tap-installation) - Minor Pipework Installation [View](/services/minor-pipework-installation) - Kitchen Sink Replacement [View](/services/kitchen-sink-replacement) - Kitchen Sink Installation [View](/services/kitchen-sink-installation) - Isolation Valve Installation [View](/services/isolation-valve-installation) - Heated Towel Rail Replacement [View](/services/heated-towel-rail-replacement) - Heated Towel Rail Installation [View](/services/heated-towel-rail-installation) - Cold Water Storage Tank Installation [View](/services/cold-water-storage-tank-installation) - Bath Replacement [View](/services/bath-replacement) - Bath Installation [View](/services/bath-installation)