--- title: "Unvented Cylinder Installation And Repair in Sevenoaks" url: https://visionplumbing.co.uk/resources/unvented-cylinder-installation-and-repair-sevenoaks/ --- # Unvented Cylinder Installation And Repair in Sevenoaks Weak showers from a loft tank, or a Sevenoaks cylinder dripping into its tundish? Our unvented cylinder plumber measures your mains, fixes or replaces the cylinder, and sheets every floor on the route. Call for a quick quote. [4.8 out of 5 · 49 reviews on Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk)[24 reviews on Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) ## Don’t just take our word for it Read every review on the [reviews](https://visionplumbing.co.uk/reviews/) page. JJustin 5 out of 5 stars, review from Trustpilot > Superb service, came same day and did an amazing job sorting out my blocked sink. Definitely would use again. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) DDavid Page 5 out of 5 stars, review from Trustpilot > Norbert was very helpful and friendly. He fixed a leak I had in my bathroom very quickly. Definitely will use again! [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) Verified reviewer, job in TN13 **10**/10 on Checkatrade Replace broken toilet cistern > Very speedy response to job request on this website, Norbert called within seconds and agreed to call in for quote later today. Came when said he… [via Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) RRob 5 out of 5 stars, review from Trustpilot > True definition of 24/7 great service. Very helpful used his services on 2 occasions went above and beyond each time. Great guy keep up the good work. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) AAnna 5 out of 5 stars, review from Trustpilot > Excellent communication, explained issue well, supplied a clear itemized quote, good workmanship and overall high efficiency. Would hire again. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) Verified reviewer, job in TN13 **10**/10 on Checkatrade Unblocked of blocked sewerage drains > Emergency call out on a Sunday evening. Very prompt and came straight away. Sorted the problem straight away and at a fair price for a Sunday night… [via Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) DDi 5 out of 5 stars, review from Trustpilot > We always use Norbert’s plumbing service at our restaurant. He is always on time and fully understand what needs to be done. Highly recommend ! [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) TThomas Dixon 5 out of 5 stars, review from Trustpilot > Excellent work - very efficient. Friendly service. I would highly recommend to others. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) Verified reviewer, job in E16 **10**/10 on Checkatrade Leaking pipe behind a laundry machine > Norbert did the job well and efficiently. He was available at short notice to help. [via Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) AAnia Hampton 5 out of 5 stars, review from Trustpilot > Excellent service. Work undertaken in a timely thorough and clean manner. Operator was friendly informative and totally professional. Highly… [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) JJoe 5 out of 5 stars, review from Trustpilot Knowledgable and trustworthy > This firm is professional and do the job well. They turned up on time and they are very knowledgeable. Very trustworthy. I highly recommend them. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) Verified reviewer, job in TN4 **10**/10 on Checkatrade Clean out blocked drain, used camera to ensure pipework was in good condition. > The quality of the work completed was extremely high, the engineer did not finish the job until he was satisfied the drain was completely clean as… [via Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) HHarriet Boulding 5 out of 5 stars, review from Trustpilot > Great service! Norbert is very professional and I am very pleased with the result. Will be recommending him. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) CCsaba Nyako 5 out of 5 stars, review from Trustpilot > Very professional service from start to finish. Norbert was friendly and knowledgeable and kept me informed at all stages. [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) Verified reviewer, job in TN15 **10**/10 on Checkatrade Fixing a new radiator to the wall and updating pipe work to remove valves on our open heating system > Norbert was absolutely brilliant. He offered great advice, worked efficiently and left everything tidy and well completed. He was also friendly and… [via Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) LLauren Ford 5 out of 5 stars, review from Trustpilot Great service for emergency work > I called Vision Plumbing as I could hear water gushing underneath my kitchen. He was able to attend quickly, and found and resolved the issue at a… [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) TTunde Ogunniyi 5 out of 5 stars, review from Trustpilot Prompt emergency response > Norbert was one of several emergency plumbing services I rang overnight after being disappointed by another plumber when seeking assistance for a… [via Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk) Verified reviewer, job in SE15 **10**/10 on Checkatrade Replacing kitchen tap AND replacing pipes under kitchen sink > After exchanging a few text messages Norbert turned up the following day on time with the replacement parts and completed the work in a very… [via Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) Vision Plumbing is a **SafeContractor approved** business 7 min read[Unvented Cylinder Installation & Repair](https://visionplumbing.co.uk/services/unvented-cylinder-installation-and-repair/) Unvented Cylinder Installation And Repair in Sevenoaks starts with a gauge on your mains. We measure pressure and flow, look at the cupboard, the loft and the discharge route, and only then choose a cylinder. Then the old one is drained, the new one fitted, and every tap run. **At a Glance** - What a dripping tundish or falling pressure usually points to - The three figures that set cylinder capacity in litres - Which valves the annual check operates, and why it matters - How the safety chain inside an unvented cylinder works Vision Plumbing is a sole trader plumbing, drainage and hot water business: Norbert quotes the cylinder, fits it and comes back for the service, so nobody new turns up. If a cylinder lets go in the night, he is also your [emergency plumber in Sevenoaks](https://visionplumbing.co.uk/resources/emergency-plumber-sevenoaks/) on a 24-hour call-out. Get a quick quote from Vision Plumbing and have your Sevenoaks mains measured before any part is ordered. ## Vented and Unvented Hot Water Cylinder Installation ### The cylinders Sevenoaks houses already have Most homes in Sevenoaks are houses, and a lot of them are old. The Victorian and Edwardian streets, the inter-war semis and planned estates such as Kippington and Montreal usually run on a cold-water tank in the loft feeding a vented cylinder in an airing cupboard. That arrangement works on gravity. So the pressure at the shower depends on how high the tank sits. Weak upstairs, every time. In the old-town streets around The Shambles, Bank Street and Dorset Street, cupboard space is often tight. That shapes the job before any cylinder is picked. ### Vented or unvented, both fitted We fit both. A vented copper cylinder still makes sense where the mains cannot carry an unvented one, or where you want to keep the loft tank. An unvented cylinder, usually stainless steel, runs straight off the mains and needs no tank above it. The survey decides which, not a sales sheet. **Get a quick quote from Vision Plumbing for unvented cylinder installation and repair in Sevenoaks, with your mains pressure and flow measured before any cylinder is ordered.** [Quick Quote Online](#contact)[Call Now: 07379 636676](tel:+447379636676) ## Unvented Cylinder Installation Process for Sevenoaks Homes ### Measured before anything is ordered The job runs in a fixed order, and the first step happens before any cylinder is bought. - Mains pressure and flow rate measured at the incoming supply - Cylinder position, loft tank and discharge route checked - Old cylinder isolated, drained and disconnected - New cylinder set with its expansion vessel, pressure reducing valve and temperature and pressure relief valve - Discharge pipe run through a tundish to a safe termination - System filled, purged, pressure-tested and every outlet run That order matters because an unvented cylinder depends entirely on the mains it is connected to. Measuring first means you never pay for a cylinder your supply cannot feed. ### What living with the work is like The work area is the cylinder cupboard, the loft hatch and the route the discharge pipe takes. Floors on that route are sheeted. Nothing else is touched. Hot water is off from the drain-down until the new cylinder is commissioned, and you hear when that window starts before it does. Cold water comes back as soon as the pipework allows. ## Vented and Unvented Cylinder Repairs in Sevenoaks ### What goes wrong with unvented cylinders Most unvented faults show themselves in one of a few ways. - Water dripping or running into the tundish: often a lost charge in the expansion vessel or a tired relief valve - Pressure that falls away or surges at the taps: usually the pressure reducing valve or a blocked strainer - No hot water, or water not hot enough: a failed thermostat or immersion heater on the electrical side A dripping tundish means a safety valve is doing its job. It still needs looking at. Water leaving a discharge pipe means pressure or temperature has gone somewhere it should not. ### Vented cylinder repairs Vented cylinders in the older houses fail differently: a corroded copper wall weeping into the cupboard, a sticking ball valve in the loft tank, a leaking union. Where a repair will hold, we repair. Where the copper itself has gone, it is replacement. From unvented cylinder installation and repair in Sevenoaks to [drain unblocking in Sevenoaks](https://visionplumbing.co.uk/resources/drain-unblocking-sevenoaks/), we cover the whole area. ## Benefits of Mains-Pressure Hot Water ### Pressure on every floor An unvented cylinder delivers hot water close to mains pressure, held steady by its pressure reducing valve. So a shower at the top of a tall Victorian house runs like the kitchen tap. Two outlets at once stop fighting each other. ### The loft back, and no tank to freeze With no cold-water storage tank, the loft is free and there is no tank sitting stagnant or freezing in a hard winter. Fewer pipes in the roof. Fewer things to leak through a ceiling. From Sevenoaks out to Maidstone we cover the whole area, with [unvented cylinder installation and repair in Maidstone](https://visionplumbing.co.uk/resources/unvented-cylinder-installation-and-repair-maidstone/) included. ## Choosing the Right Cylinder Capacity and Type ### Sizing to how the house uses water Capacity is measured in litres, and we size it on three figures: how many bathrooms and showers you have, how many could run at once, and what flow your mains delivers. Too small and the last shower runs cold. Too large and you heat water nobody uses. Then the cylinder is ordered. ### Direct, indirect and the swap from vented A direct cylinder heats its water with immersion heaters. An indirect cylinder takes its heat through an internal coil, and our work is the cylinder and its water side. Where a vented cylinder already stands, a [hot water cylinder replacement](https://visionplumbing.co.uk/unvented-cylinder-installation-and-repair/) with an unvented unit is usually possible, provided the mains figures and the discharge route allow it. ## Hot Water Cylinder Servicing and Maintenance ### What the annual check is for An unvented cylinder holds hot water under pressure, and its safety rests on valves that sit unused for months. The annual check proves they still work. - Expansion vessel charge checked and topped up - Temperature and pressure relief valve and expansion relief valve manually operated - Pressure reducing valve and line strainer checked and cleaned - Tundish and discharge pipe checked for flow and a clear termination - Thermostats and thermal cut-out tested A valve that has scaled shut gives no warning until the day it is needed. That is the point. ### Backed after the visit Every service and repair carries our one year warranty on parts and labour. If a valve sticks between checks, you ring the same plumber who serviced it. ## How Unvented Hot Water Cylinders Work ### Mains in, pressure controlled Cold water enters from the mains through a strainer and a pressure reducing valve, which holds it at a steady working pressure. It fills a sealed stainless steel cylinder. As the water heats it expands, and the expansion vessel takes that extra volume instead of the cylinder walls. ### The safety chain If the expansion vessel fails, the expansion relief valve opens. If the water overheats, the thermostat cuts out first, then the thermal cut-out, and last the temperature and pressure relief valve sends water through the tundish to a safe point. Three layers. Each one is tested at the annual service. ### One plumber, start to finish If you want an unvented cylinder plumber near you in Sevenoaks, the man who quotes the job is Norbert, and he is the one who fits it, services it and answers when a valve drips. Over 20 years of plumbing go into that. **Get a quick quote from Vision Plumbing for unvented cylinder installation and repair in Sevenoaks, with your mains pressure and flow measured before any cylinder is ordered.** [Quick Quote Online](#contact)[Call Now: 07379 636676](tel:+447379636676) ## People Also Ask: Unvented Cylinder Installation And Repair in Sevenoaks ### Can a Victorian or Edwardian house in Sevenoaks swap its loft tank for an unvented cylinder? Usually, yes, provided the mains can feed it. Older Sevenoaks houses can have tired supply pipework, so we measure pressure and flow at the supply before anything else. If the figures hold, the vented cylinder and loft tank come out and the unvented cylinder goes in. If they do not, we tell you. Plainly. ### Will an unvented cylinder work in a flat in Sevenoaks? Often, and around a quarter of homes in Sevenoaks town are flats, so it is a regular question. The deciding points are space for the cylinder and its expansion vessel, a safe route outside for the discharge pipe, and the mains figures at your floor. We check all three on the first visit and give you a straight answer. ### How long should an unvented cylinder last? It depends on water quality, use and how well the valves are looked after, so we will not quote a figure. What shortens a cylinder's life is neglect: a flat expansion vessel or a scaled valve puts strain on the whole unit. The annual check catches those early, and every repair carries our one year warranty on parts and labour. - [Home](https://visionplumbing.co.uk/) - [Resources](https://visionplumbing.co.uk/resources/) - Unvented Cylinder Installation And Repair in Sevenoaks #### On This Page #### Need A Hand With This? Norbert does the work himself, with a one year warranty on parts and labour. ## Related resources - [Unvented Cylinder Installation And Repair in Royal Tunbridge Wells](https://visionplumbing.co.uk/resources/unvented-cylinder-installation-and-repair-royal-tunbridge-wells/)Unvented cylinder installation and repair in Royal Tunbridge Wells by Vision Plumbing: relief valves, expansion vessels, annual checks. Get a quick quote. - [Unvented Cylinder Installation And Repair in Maidstone](https://visionplumbing.co.uk/resources/unvented-cylinder-installation-and-repair-maidstone/)Unvented cylinder installation and repair in Maidstone from Vision Plumbing: annual safety checks, valve repairs and a one year warranty. Get a quick quote. - [High Pressure Drain Jetting in Sevenoaks](https://visionplumbing.co.uk/resources/high-pressure-drain-jetting-sevenoaks/)High pressure drain jetting in Sevenoaks for fat, scale, roots and silt a rod won't shift. Owned jetting kit, CCTV camera, one year warranty. Get a quick quote. ## Tell Norbert what needs doing A line about the job is enough. Norbert reads every enquiry himself and rings you back to talk it through before he quotes. [4.8 out of 5 · 49 reviews on Trustpilot (opens Trustpilot)](https://www.trustpilot.com/review/visionplumbing.co.uk)[24 reviews on Checkatrade (opens Checkatrade)](https://www.checkatrade.com/trades/VisionPlumbingLimited) [07379 636676](tel:+447379636676) 24 hours, for emergencies The form has not loaded. Please call or text [07379 636676](tel:+447379636676).