Unvented Cylinder Replacement Kent
HOCU delivers expert unvented cylinder replacement across Kent, carried out by G3-qualified, Gas Safe certified engineers who take pride in every installation.
Our Services
From full unvented cylinder replacements to vented system upgrades, HOCU delivers G3-compliant installations tailored to your home, with transparent pricing and zero compromise on quality.
Vented Cylinder
A vented cylinder relies on a cold water storage tank, usually in the loft, to feed your hot water system. When it starts to fail, you will notice it quickly through inconsistent temperatures, slow recovery times, or visible wear on the tank itself. We replace vented cylinders cleanly and efficiently, matching the right unit to your existing system and leaving everything fully tested before we go.
Unvented Cylinder
An unvented cylinder connects directly to the mains, delivering stronger water pressure to every tap and shower in your home without the need for a loft tank. When your unvented cylinder reaches the end of its life, replacement is the most reliable way to restore full performance. We supply and install leading brands including Megaflo, Gledhill, and Worcester Bosch, all backed by the full manufacturer warranty and our own 12-month workmanship guarantee.
System Upgrade
If your home still runs on a vented system with a cold water tank in the loft, upgrading to an unvented cylinder is one of the best improvements you can make. You gain mains-pressure hot water throughout your home and free up valuable loft space at the same time. Our G3-qualified engineers manage the full transition, from removing your existing setup to commissioning your new cylinder and issuing all compliance certification.
Trusted Partners
We install and service boilers from the UK's most trusted manufacturers, so your home is always fitted with equipment built to last.
FAQs
Everything you need to know about our services, qualifications, and how we work across Kent.
A vented cylinder uses a cold water storage tank, usually in the loft, to feed your hot water. An unvented cylinder connects directly to the mains, delivering stronger pressure throughout your home without the need for a loft tank. Both can be replaced or upgraded by the HOCU team.
Yes. It is a legal requirement in the UK. Any engineer carrying out unvented cylinder installation or replacement must hold a G3 qualification alongside Gas Safe registration. Every HOCU engineer meets both requirements, and all work is fully certified on completion.
Cylinder replacements with HOCU typically range from £900 to £3,500, depending on the cylinder type, size, and the scope of the work involved. Every quote is tailored to your home, and you will always receive a clear, honest price before anything begins.
Most replacements are completed within one to two days. We will give you a clear timeline at the survey stage so you can plan around it with confidence.
The right size depends on your household. As a guide, a 150-litre cylinder suits one to two people, while 200 to 300 litres is more appropriate for three to five people. We will recommend the right size during your free home assessment.
Yes. We carry out full vented to unvented upgrades, including removal of the existing cold water tank, new cylinder supply and installation, and all compliance certification. It makes a significant difference to your hot water performance throughout the home.
Every installation includes the full manufacturer warranty on your cylinder, plus our own 12 month workmanship guarantee. You are covered from day one, and we are always here if you need us after the job is done.
We carry out cylinder replacement across a wide area of Kent, including Sevenoaks, Maidstone, Tonbridge, Tunbridge Wells, and the surrounding towns and villages. If you are unsure whether we cover your postcode, just give us a call. We are always happy to help.
Every engineer at HOCU is fully Gas Safe registered and G3 qualified. All cylinder work is certified, compliant, and documented, and you will receive all your paperwork on completion every time.
Yes. We provide responsive support for urgent hot water and cylinder issues across Kent, subject to availability. When your hot water fails, we will do everything we can to get to you as quickly as possible.
Get in Touch
Speak with our Gas Safe engineers today and get honest, expert advice on your new boiler or heating system. Trusted workmanship, transparent pricing, and a team that genuinely cares about getting it right for you.
Book a Free Consultation