Hot Water Cylinders in Cambridge
Stronger showers and reliable hot water from a new unvented cylinder, fitted by G3-qualified Gas Safe engineers. We install, replace and service unvented, vented and heat pump cylinders.
Which cylinder do you need?
We fit cylinders from Megaflo, UK Cylinders, Gledhill, Telford, Joule and more, and recommend the right one for your home and hot water use at a free survey.
Unvented cylinder
Best for strong showers
Fed straight from the mains, so you get mains-pressure hot water at every tap and no loft tanks.
- Powerful showers without a pump
- Frees up loft space
- Needs good mains pressure and flow
Vented cylinder
Best for low mains pressure
Fed from a cold water tank in the loft. Simple and reliable where mains pressure is poor.
- Works with low mains pressure
- Simple, proven design
- Lower pressure at the taps
Heat pump cylinder
Best with a heat pump
A larger coil designed for the lower temperatures a heat pump runs at.
- Needed for heat pump systems
- Well insulated to cut losses
- Can include solar or electric backup
Cylinder prices
Guide prices including VAT. Your fixed price comes after a free survey.
| Vented cylinder swap, like for like | from £1,200 |
| Unvented cylinder swap, like for like | from £2,200 |
| Converting from a vented system to an unvented cylinder | from £3,500 |
Prices include VAT, the cylinder, fitting materials, installation and commissioning, plus Building Regulations notification for unvented cylinders. Larger cylinders, moving the cylinder or longer pipe runs cost more, and we’ll confirm a fixed price after the survey.
What’s included
- Free survey, including a mains pressure and flow test
- Cylinder sized for your household
- Removal of the old cylinder and loft tanks where no longer needed
- Safety valves, expansion vessel and discharge pipework fitted to regulations
- Commissioning and handover
- Building Regulations notification and warranty registration
Signs your cylinder needs attention
- Hot water runs out quickly or takes ages to reheat
- Water dripping from the tundish or discharge pipe
- Rusty or discoloured hot water
- Leaks around the base of the cylinder
- Banging or hissing noises while heating
Water from the discharge pipe on an unvented cylinder means a safety valve has opened. Turn the heating and immersion off and call us.
Unvented cylinder servicing
An annual check is recommended, and usually required to keep the cylinder warranty valid.
| Unvented cylinder service on its own | £109 |
| Unvented cylinder service with your boiler service | +£48 |
| Heat pump and cylinder service together | £240 |
Prices include VAT.
How it works
Free survey
We test your mains pressure and flow, check the space and recommend the right cylinder.
Fixed quote
You get a written quote with everything included.
Installation
Most cylinder swaps take a day. We notify Building Control and register your warranty.
What our customers say
Rated 4.8 out of 5 from more than 140 Google reviews.
“We have recently had our boiler replaced and eight new radiators installed by Cambs Heating, and we could not be happier with the service we received. From the initial quotation through to completion, everything was handled professionally…”
Helen N. · Google review
“I get my annual services and any other gas needs from Cambs Heating. The engineer is very knowledgeable and extremely polite and mindful of my house.”
Google review
“Best value quote we could find for a boiler replacement, process was very smooth and professional and Ben was highly knowledgable. Would recommend!”
Ross C. · Google review
Hot water cylinder FAQs
Answers to the questions we’re asked most.
How much does a new hot water cylinder cost?
A like-for-like vented cylinder swap starts from £1,200 including VAT, and an unvented swap from £2,200. Converting from a vented system with loft tanks to an unvented cylinder starts from £3,500. We give you a fixed price after a free survey.
What is an unvented cylinder?
An unvented cylinder is fed directly from the mains rather than a loft tank, so it delivers hot water at mains pressure for stronger showers.
Can I have an unvented cylinder?
You need good mains water pressure and flow. We test both at the free survey before recommending one.
Who can fit an unvented cylinder?
Only an engineer with a G3 unvented qualification, and the installation must be notified to Building Control. We do both.
How long does installation take?
Most cylinder replacements take a day.
Does an unvented cylinder need servicing?
Yes. An annual check is recommended and usually required for the warranty. It’s £109 on its own or £48 added to your boiler service.
Which brands do you fit?
We fit cylinders from Megaflo, UK Cylinders, Gledhill, Telford, Joule and more, and recommend the right model for your home and budget.
Want better hot water?
Book a free survey, or call our Cambridge team for advice.
Related: New boilers · Heat pumps · Boiler servicing · Power flushing