London Cylinder Specialist: hot water cylinder guideshttps://londoncylinderspecialist.co.uk/feed.xml2026-10-16T07:00:00ZHot Water Cylinder: Repair or Replace?https://londoncylinderspecialist.co.uk/blog/cylinder-repair-or-replace-decision2026-10-16T07:00:00Z2026-10-16T07:00:00ZHot water cylinder repair or replace? Valve, element and thermostat faults are repairs. A leaking shell or failed coil is not. Here is the evidence for each.Waterlogged Expansion Vessel on an Unvented Cylinderhttps://londoncylinderspecialist.co.uk/blog/expansion-vessel-waterlogged2026-10-16T07:00:00Z2026-10-16T07:00:00ZA waterlogged expansion vessel on an unvented cylinder shows as relief valve or tundish discharge on heat-up. How it is confirmed, and recharge or replace.No Hot Water but the Heating Works: Check the Cylinderhttps://londoncylinderspecialist.co.uk/blog/heating-on-but-no-hot-water-from-cylinder2026-10-16T07:00:00Z2026-10-16T07:00:00ZNo hot water but the heating works? With a cylinder, suspect the programmer, cylinder thermostat, two-port valve, immersion or coil. Check them in this order.Hot Water Cylinder Leaking: Find the Source Firsthttps://londoncylinderspecialist.co.uk/blog/hot-water-cylinder-leaking-find-the-source2026-10-16T07:00:00Z2026-10-16T07:00:00ZHot water cylinder leaking? Isolate the supply and power, then trace the water to the valve group, immersion boss, coil joints, discharge pipe or shell.How Long Does a Hot Water Cylinder Last?https://londoncylinderspecialist.co.uk/blog/hot-water-cylinder-lifespan-signs-of-failure2026-10-16T07:00:00Z2026-10-16T07:00:00ZHow long a hot water cylinder lasts depends on its material, your water and its servicing. What warranties do and do not tell you, plus failure signs by part.Hot Water Cylinder Replacement Costhttps://londoncylinderspecialist.co.uk/blog/hot-water-cylinder-replacement-cost2026-10-16T07:00:00Z2026-10-16T07:00:00ZHot water cylinder replacement cost: why UK guides disagree, how to read a quote and the fixed £1,450 labour price LCS charges, cylinder priced separately.Hot Water Not Working? Is It the Cylinder?https://londoncylinderspecialist.co.uk/blog/hot-water-not-working-is-it-the-cylinder2026-10-16T07:00:00Z2026-10-16T07:00:00ZHot water not working at home? Sort your system first: boiler-fed, immersion-only, vented or unvented. Three questions then point to the right cylinder guide.Immersion Heater Not Working: What to Test, in Orderhttps://londoncylinderspecialist.co.uk/blog/immersion-heater-not-working-what-to-test2026-10-16T07:00:00Z2026-10-16T07:00:00ZImmersion heater not working? Test in order: switch and fuse, thermostat, high-limit cut-out, element, then the boss. Which steps are safe and which are not.TPRV Dripping on an Unvented Cylinderhttps://londoncylinderspecialist.co.uk/blog/tprv-dripping-unvented-cylinder2026-10-16T07:00:00Z2026-10-16T07:00:00ZA TPRV dripping on an unvented cylinder means the water ran too hot or the valve seat no longer seals. How to read the discharge and what to check.Tundish Dripping: What It Is Telling Youhttps://londoncylinderspecialist.co.uk/blog/tundish-dripping-causes-and-checks2026-10-16T07:00:00Z2026-10-16T07:00:00ZA tundish dripping means a relief valve upstream is discharging. How to read the drip, what a correct discharge route looks like, and what damp and scale mean.Unvented Cylinder Installation Costhttps://londoncylinderspecialist.co.uk/blog/unvented-cylinder-installation-cost2026-10-16T07:00:00Z2026-10-16T07:00:00ZUnvented cylinder installation cost: UK guide ranges, line items to expect and the fixed £2,400 LCS charges for a new install, cylinder separate.Unvented Cylinder Regulations: Part G and What You Should Holdhttps://londoncylinderspecialist.co.uk/blog/unvented-cylinder-regulations-part-g2026-10-16T07:00:00Z2026-10-16T07:00:00ZUnvented cylinder regulations come from Building Regulations Part G. What it requires, who may install, can you fit your own, and what an owner should hold.Unvented Cylinder Service Costhttps://londoncylinderspecialist.co.uk/blog/unvented-cylinder-service-cost2026-10-16T07:00:00Z2026-10-16T07:00:00ZUnvented cylinder service cost: one UK guide range, the inspection list behind any price, and the £180 annual service LCS charges across London.Vented vs Unvented Cylinder: How Each One Failshttps://londoncylinderspecialist.co.uk/blog/vented-vs-unvented-cylinder-explained2026-10-16T07:00:00Z2026-10-16T07:00:00ZVented vs unvented cylinder compared by how each fails: tank and feed, pressure and flow, typical faults, and what that means for repair or replacement.How Long Does It Take to Replace a Hot Water Cylinder?https://londoncylinderspecialist.co.uk/blog/what-happens-on-cylinder-replacement-day2026-10-16T07:00:00Z2026-10-16T07:00:00ZHow long it takes to replace a hot water cylinder depends on type, access and pipework. Here is the replacement day in order, and what you can use meanwhile.