Service
Hot Water Cylinders and Water Mains in Maidstone and Medway
Unvented cylinder installations and water main replacements that fix weak pressure and hot water that runs out halfway through a shower.
9.97/10 from 13 Checkatrade reviewsFree survey, no call-out fee1-year workmanship guarantee
Gas Safe registered
Company reg. no. 552490, all engineers registered
Vaillant Advance Installer
Dan and Dean
F-Gas registered company
FGAS ID FGAS3023734
Checkatrade member
Independently vetted
Constructionline Gold
Accredited supplier
Fully insured
£5m public · £10m employers' liability
What this service covers
Two closely related jobs sit here: installing or replacing hot water cylinders, including modern unvented cylinders that run at mains pressure, and replacing or upgrading the incoming water main that feeds the whole property.
An unvented cylinder removes the tank in the loft and delivers hot water at mains pressure to every outlet, which usually transforms showers upstairs. It has to be sized against the number of bathrooms and how the household uses hot water, not against whatever was there before.
A water main upgrade tackles the other half of the problem. Old, narrow or partially blocked supply pipes throttle the whole house, and no cylinder or shower can deliver more than the main brings in.
- Unvented hot water cylinder installation
- Water main replacement and upgrades for better pressure
- Correctly sized for the number of bathrooms
- Free survey and written estimate
Why it matters
What weak pressure is really costing you
Hot water that runs cold when someone else turns a tap on, a bath that takes an age to fill, and showers that drop to a trickle are all signs that the supply, storage or both are undersized for the household.
Old cylinders lose heat constantly through poor insulation, so you pay to reheat water you never used. Scaled cylinders lose capacity as well as efficiency.
Leaving an ageing supply pipe in the ground also carries its own risk: when it finally fails it fails underground, and the repair is disruptive and unplanned.
Common mistakes we're called in to fix
- Replacing a cylinder like for like without checking the number of bathrooms it now serves
- Blaming the shower when the incoming main is the real bottleneck
- Keeping an uninsulated old cylinder because it still works
- Sizing an unvented cylinder on price rather than on hot water demand
Our process
Our cylinder and water main process
- 1
Free survey
We measure incoming pressure and flow, look at the existing cylinder or supply, and work out what the household actually needs.
- 2
Written estimate
Specification and full price in writing before anything is ordered.
- 3
Installation
Cylinder installed and connected, or the new main run and connected, with pipework upgraded where it is the limiting factor.
- 4
Commission and test
The system is filled, set and tested at every outlet so you can see the difference.
- 5
Handover
Controls explained, site left clean, and the work backed by our 1-year workmanship guarantee.
Recent work
Hot Water Cylinders & Water Mains jobs we've completed
Real photographs from our own jobs across Maidstone and the surrounding areas, no stock images.
Benefits
What you get afterwards
Proper pressure upstairs
Mains-pressure hot water at every outlet instead of a gravity dribble.
Hot water that lasts
Storage sized against the bathrooms and the household, not the old cylinder.
Loft space back
Unvented systems remove the cold water tank and its pipework.
Whole-house improvement
A new main lifts flow at every tap, shower and appliance in the property.
Fully insured
£5m public liability and £10m employers' liability cover.
1-year workmanship guarantee
Every installation is backed for a year.
In detail
Cylinders and water mains in more detail
How to tell which half of the problem you have.
Is it the cylinder or the main?
If cold water pressure is good but hot water is weak or runs out, the cylinder and its configuration are the likely cause.
If both hot and cold are weak, particularly upstairs and when more than one outlet is open, the incoming main is the bottleneck and a new cylinder alone will not fix it. We measure both at the survey so the money goes on the right job.
Sizing an unvented cylinder
Capacity is decided by the number of bathrooms and the pattern of use: a family who all shower between seven and eight in the morning needs more stored hot water than one that spreads it through the day.
Undersized cylinders are the most common complaint we are called to after somebody else's installation, so we size against demand rather than cupboard space alone.
Replacing a water main
Older properties often still run on narrow or degraded supply pipe. Replacing it with modern pipework restores the flow the rest of the plumbing was designed around.
It pairs naturally with a bathroom installation or a new shower, where the improvement is felt immediately.
Related services
Popular areas we cover
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See all areas we cover, browse every service, go back to the homepage, or contact us.
Where we work
Hot Water Cylinders & Water Mains across Maidstone and Medway
What customers say
Rated 9.97 out of 10
across 13 Checkatrade reviews
10/10 · New Air Conditioning Installed
"From my first enquiry to completion of works I found them to be very courteous, hard working and competitively priced. Dan carried out a full survey and gave a cost breakdown for works. A date was booked and the guys turned up on time and work was completed within the given timescale. They were very polite and tidy and even vacuumed after completion. I am so happy with my new hot/cold air conditioning unit which will enable me to work comfortably from home and sleep at night. They even sorted my dripping tap free of charge! I would highly recommend DM Heating and Cooling."
10/10 · New Combi Boiler Installation
"I had a new combi boiler installed and had my old one removed. Excellent service and a very productive team. They were helpful with boiler and thermostat advice and quick to reply. I would highly recommend their services."
10/10 · Boiler replacement
"Dean and the team were excellent. Quick response to initial issue, boiler needed replacing. All quotes explained with options. Work carried out quickly and professionally. I found them to be very reliable and trustworthy. Wouldn't hesitate to use again or recommend."
Common questions
Straight answers,
before you call
Still unsure? Call Dan on 07930 686788.
- Will an unvented cylinder improve my shower?
- If your hot water is currently gravity-fed from a loft tank, almost certainly. We confirm it by measuring the incoming main at the free survey.
- How do I know if my water main needs replacing?
- Weak hot and cold flow together, especially upstairs or with two outlets running, usually points at the main rather than the fittings.
- What size cylinder do I need?
- It depends on bathrooms and usage patterns. We size it against your household's actual demand and put the recommendation in writing.
- Do you remove the old loft tank?
- Where an unvented system makes it redundant, yes: that is part of the job and gives you the loft space back.
- Is the installation guaranteed?
- Yes, with our 1-year workmanship guarantee, and we are fully insured.
Weak pressure or hot water that runs out?
Free survey, honest diagnosis of whether it is the cylinder or the main, and a written price before we start.