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Get reliable hot water with professional unvented cylinder services in St Albans. Abbey Plumbing & Heating provides unvented cylinder installation, servicing, repairs and upgrades, helping homeowners maintain efficient hot water systems with dependable performance and professional workmanship.
Professional installation and reliable repairs for unvented cylinders, ensuring consistent hot water and optimal system performance.
View DetailsAn unvented hot water cylinder is fed straight from the mains, so you get strong, even pressure at every tap and shower without a cold water tank in the loft. Because it stores hot water under pressure, it has to be installed, serviced and repaired by an engineer with G3 unvented qualifications. That is exactly what our unvented cylinder team does across St Albans and Hertfordshire.
Full details are on our unvented cylinder services page. If your existing tank-fed cylinder is failing, see our cylinder replacements for the options.
Water running from the discharge pipe outside, a dripping tundish, hot water that comes out in bursts or a cylinder making unusual noises all need checking by a qualified engineer. These are the safety devices doing their job, and they tell you something is not right.
Call 01727 620 195 to book an unvented cylinder service or repair.
Our experienced team prioritizes quality, safety, and customer satisfaction. Here’s what sets us apart:
Quick, reliable service when you need it most.
Fully trained engineers ensuring high-quality work.
Clear, upfront quotes with no hidden costs.
Proven track record of excellent service and satisfied clients.
It usually means the expansion vessel has lost its charge or a relief valve is letting by. It should be checked by a G3 qualified engineer soon, as it is a sign the system is not controlling pressure as it should.
Every year. Manufacturers require an annual service by a G3 qualified engineer to keep the warranty valid and make sure the safety devices work.
No. Installing, servicing or repairing unvented hot water systems must be carried out by someone holding a G3 unvented hot water qualification.
We welcome all enquiries, whether you're a new customer or a returning client, our friendly team is here to help!
Still have questions? Read our plumbing and heating FAQs for answers on boilers, heating, gas safety and emergency callouts.
