--- title: "Vented Hot Water Cylinder Installation | Northstar Plumbing" description: "Install a traditional vented hot water cylinder for dependable stored hot water. Includes sizing advice, removal of old unit, testing and tidy pipework." canonical: "https://www.northstarplumbing.co.uk/services/vented-hot-water-cylinder-installation" --- ![Wall-mounted boilers, white tanks and dense network of stainless-steel pipes with red and blue manifolds](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fboiler-room-piping-manifold-filter.jpg%3Fv%3D1768575108210&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) Hot Water Systems # Vented Hot Water Cylinder Installation [Contact Us](https://www.northstarplumbing.co.uk/redirect) Vented hot water cylinder installation gives you a reliable supply of stored domestic hot water using a traditional open vented system, typically fed from a cold water storage cistern. It is a practical option for many properties where an existing vented set-up is being replaced, upgraded, or reconfigured during plumbing works. ## What this service covers A vented cylinder installation is planned around your existing system and hot water demand, then fitted and commissioned so it works safely and consistently. - Assessment of your current cylinder, pipework, cold water storage cistern and vent arrangement - Advice on cylinder type and size (capacity and reheat performance) - Isolation and draining of the system, with safe removal of the old cylinder - Installation of the new vented cylinder and connection to hot, cold, vent and primary (if indirect) pipework - Checks and replacement of key components where needed (for example immersion heater, valve set, cylinder stat) - Leak testing, filling, venting, temperature control checks and commissioning - Clean, tidy finish and clear handover on operation and basic care ### When a vented cylinder is the right choice This service is most suitable if you already have a traditional vented cylinder and want a like-for-like replacement with minimal disruption. Common reasons to book an installation include: - A leaking or corroded cylinder - Poor hot water performance or slow recovery - An immersion heater that repeatedly fails - A property upgrade where hot water demand has changed (new bathroom, shower, or higher occupancy) - Landlord maintenance where reliability and straightforward operation matter ### How the installation is delivered Work usually starts with confirming the current layout and the best cylinder specification for your needs. The system is then isolated and drained, the old unit removed, and the new cylinder positioned and connected. Before finishing, the pipework is tested, the cylinder is brought up to temperature, and controls are checked so the system heats properly and shuts off when it should. ### After installation: what happens next You will be shown how to use the immersion and any heating controls, plus what to watch for in the first few days (for example minor air release and where to check for drips). If you are a landlord or managing agent, the handover can be kept simple for tenants and recorded for your maintenance file. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Frequently Asked Questions What is a vented hot water cylinder? A vented cylinder stores hot water and is connected to an open vent and usually a cold water storage cistern, often in the loft. It is a traditional set-up and is commonly replaced like-for-like in older or established systems. Do I need to replace the cold water storage cistern as well? Not always, but it should be checked for condition, size and correct fittings. If it is undersized, contaminated, or has failing valves or pipework, replacing it can improve reliability and water quality. Can a vented cylinder be swapped for an unvented cylinder? Sometimes, but it depends on your incoming mains pressure, pipework, and safety requirements. Unvented cylinders require the correct certification and additional components, so a site assessment is needed before advising on a change. How long does a vented cylinder installation take? Many like-for-like replacements can be completed within a day. If there are complications such as altered pipe routes, damaged valves, or changes to the loft cistern, it may take longer. What are the signs a vented cylinder needs replacing? Common signs include leaks, rusty water, repeated immersion heater problems, or inconsistent hot water. If the cylinder is heavily scaled or the casing is deteriorating, replacement is often more cost-effective than ongoing repairs. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Related Services Complete your experience with these services - Vented Hot Water Cylinder Replacement [View](/services/vented-hot-water-cylinder-replacement) - Unvented Cylinder Service [View](/services/unvented-cylinder-service) - Unvented Cylinder Replacement [View](/services/unvented-cylinder-replacement) - Unvented Cylinder Repair [View](/services/unvented-cylinder-repair) Show more services - Unvented Cylinder Installation [View](/services/unvented-cylinder-installation) - Temperature & Pressure Relief Valve Replacement [View](/services/temperature-and-pressure-relief-valve-replacement) - Immersion Heater Replacement [View](/services/immersion-heater-replacement) - Immersion Heater Repair [View](/services/immersion-heater-repair) - Immersion Heater Installation [View](/services/immersion-heater-installation) - Hot Water System Upgrade [View](/services/hot-water-system-upgrade) - Hot Water System Commissioning [View](/services/hot-water-system-commissioning) - Hot Water Recirculation Pump Installation [View](/services/hot-water-recirculation-pump-installation) - Hot Water Performance Investigation [View](/services/hot-water-performance-investigation) - Hot Water Cylinder Leak Repair [View](/services/hot-water-cylinder-leak-repair) - Expansion Vessel Replacement [View](/services/expansion-vessel-replacement) - Cylinder Thermostat Replacement [View](/services/cylinder-thermostat-replacement) - Cold Water Feed Repair (Cylinder) [View](/services/cold-water-feed-repair-cylinder)