NEW · Get a fixed online boiler quote in 60 secondsTry it - 6 Vernon Walk, Epsom, Tadworth, KT20 5QP24 Hours / 7 Days a Week Gas Safe RegisteredFacebookInstagram HomeAboutServices Service Areas Our WorkReviewsSpecialsContact07307 219499Request Estimate Home - Services - Unvented Cylinders Gas Safe · 14+ Years Experience # Unvented Hot Water Cylinder Installation & Service In Surrey G3 qualified install, service and repair of Megaflo, Telford and Joule unvented cylinders — high-pressure showers, never a cold tank in the loft. Request Free Estimate Call 07307 219499 - 5-Star Reviews - Gas Safe - Open 24/7 - Local & Family-Run Sound Familiar? ## Most unvented cylinders jobs get botched the same way - Showers a dribble because the loft tank can't keep up. - Want mains-pressure hot water but worried about complexity. - Existing cylinder hissing, dripping or losing pressure. - Annual service overdue and the discharge pipe is dripping outside. The Cost Of Getting It WrongAn unvented cylinder without an annual G3 inspection is a legal liability — and a failed temperature/pressure relief valve can rupture the cylinder. A working unit gives you mains-pressure showers from every tap; a neglected one is a £1,200+ replacement. How It Works ## Simple, Honest, On Time 1 ### Honest Diagnosis We listen to the symptoms, inspect the system on-site and explain what's actually wrong — in plain English, not jargon. 2 ### Fixed Written Quote Before we lift a spanner, you get a clear written price. No hidden charges, no surprise add-ons at the end. 3 ### Booked At Your Convenience Most jobs slot in within the same week — emergencies covered same-day, 24/7 across Surrey. 4 ### Tidy, Compliant Workmanship Dust sheets down, boots off, all gas work signed off to current Gas Safe regulations. Your home left cleaner than we found it. 5 ### G3 Certificate Issued Every install or service is documented and a G3 certificate issued — required for Building Regulations compliance and home insurance. What You Get ## Why Surrey Homeowners Choose Weekes For Unvented Cylinders ### G3 Qualified Engineers Unvented cylinders legally require a G3-qualified engineer. We are — every install and service is fully compliant. ### Megaflo, Telford, Joule & Range Specialists We install and service all major UK unvented cylinder brands — including stainless steel models with 25-year warranties. ### Annual Service With Full Safety Check Discharge pipework, T&P valve, expansion vessel, immersion stat and anode — all inspected and tested annually, certified for insurance. ### Mains Pressure & Flow Tested First We measure your incoming mains pressure and flow before sizing — too low and the cylinder won't deliver. Many Surrey homes need a flow check before quoting. ### Replacement Of Failed Components Expansion vessels, immersion elements, T&P valves and tundishes carried on the van — most repairs done in a single visit. ### Removal Of Old Loft Tanks Switching from a vented to unvented system? We remove the cold water tank, header tank and associated pipework — and certify the loft is left tidy. Limited-Time Offer ## Free Boiler Health CheckWith Any Repair Book any boiler repair this month and we'll include our 21-point health check at no extra cost. Claim Your Free Health Check Or Call 07307 219499 Knowledge Centre ## Unvented Cylinders: What You Should Actually Know ### Vented vs Unvented — Which Is Right For Your Home Vented (loft tank) systems are cheap and reliable but deliver low-pressure hot water. Unvented systems run at mains pressure — strong showers from every tap simultaneously — but require G3 qualified installation and annual servicing. For most modern Surrey homes with 2+ bathrooms, unvented is the right call. ### Why Annual Servicing Is Legally Required Building Regulations Part G3 requires annual servicing of all unvented hot water systems by a G3-qualified engineer. Without documented annual service: home insurance can be voided, the system becomes a safety risk (T&P valves can fail), and any subsequent failure is on you. ### Sizing An Unvented Cylinder Correctly Rule of thumb: 35–45 litres per occupant per day for a normal household, more if you have power showers or baths. A 4-person home with 2 bathrooms typically needs a 180–210L cylinder. We size based on actual usage, not box-tickers' guesswork. Recent Work ## Real Unvented Cylinders Jobs Across Surrey Photos from real Weekes installations — no stock images. Tempest unvented cylinder install, full copper rebuild Megaflo → Tempest cylinder upgrade (before / after) Tempest unvented cylinder in airing cupboard System boiler + unvented cylinder, fully lagged Loft Tempest cylinder install with expansion gear Service Areas ## Unvented Cylinders Across Surrey Same trusted engineer, same fixed pricing — wherever you are in our coverage area. Tadworth Epsom Sutton Reigate Redhill Croydon Surrey Dorking Cheam Banstead Carshalton Wallington Leatherhead Coulsdon Horley FAQs ## Straight Answers — Unvented Cylinders ### svg]:rotate-180 text-left font-display font-bold text-base sm:text-lg text-navy uppercase tracking-tight py-5 hover:no-underline hover:text-teal" data-radix-collection-item="">Do unvented cylinders need annual servicing? ### svg]:rotate-180 text-left font-display font-bold text-base sm:text-lg text-navy uppercase tracking-tight py-5 hover:no-underline hover:text-teal" data-radix-collection-item="">Why do I need a G3 qualified engineer? ### svg]:rotate-180 text-left font-display font-bold text-base sm:text-lg text-navy uppercase tracking-tight py-5 hover:no-underline hover:text-teal" data-radix-collection-item="">How long does unvented cylinder installation take? ### svg]:rotate-180 text-left font-display font-bold text-base sm:text-lg text-navy uppercase tracking-tight py-5 hover:no-underline hover:text-teal" data-radix-collection-item="">Will I get better showers with an unvented cylinder? ### svg]:rotate-180 text-left font-display font-bold text-base sm:text-lg text-navy uppercase tracking-tight py-5 hover:no-underline hover:text-teal" data-radix-collection-item="">What if my mains pressure is too low? ### svg]:rotate-180 text-left font-display font-bold text-base sm:text-lg text-navy uppercase tracking-tight py-5 hover:no-underline hover:text-teal" data-radix-collection-item="">Why is water dripping from my outside discharge pipe? ## Ready To Get YourUnvented Cylinders Sorted? Local. Gas Safe. Available 24/7. Get a fast, no-obligation quote — most enquiries answered the same day. Request Free Estimate 07307 219499 Trusted, local, Gas Safe registered plumbing & heating engineers. Serving Tadworth, Epsom and Surrey with 14+ years of hands-on experience. - 6 Vernon Walk, Epsom, Tadworth, KT20 5QP - 07307 219499 - Callum.weekes@hotmail.com - 24 Hours / 7 Days a Week - Gas Safe Registered - ### Services Boiler Installations - Boiler Repairs - Boiler Servicing - Heating Repairs - Smart Thermostats - Powerflushing - Plumbing - Unvented Cylinders - Emergency Plumbing - Gas Safety Certificates (CP12) - View all → ### Service Areas - Tadworth - Epsom - Sutton - Reigate - Redhill - Croydon - Surrey - Dorking - Cheam - Banstead - Carshalton - Wallington - Leatherhead - Coulsdon - Horley ### Company - About - Our Work - Reviews - Specials - Contact - Boiler Repairs Banstead - Boiler Repairs Reigate - Hive Thermostat Guide - Powerflushing Guide © 2026 Weekes Plumbing & Heating. All rights reserved. Privacy Policy·Terms & Conditions·Cookie Policy Call Now Get Estimate We use essential cookies to run this site, and optional ones to measure how it's used. Cookie policy. 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