Reliable stored hot water, repaired, serviced or upgraded.

Get reliable hot water with cylinder fault-finding, servicing and replacement from our experienced team.
Stelflow unvented hot-water cylinder with connected heating controls and pipework
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★★★★★

Matt provided an excellent service

“he gave us really good advice about our heating system taking into account our situation. I would definitely recommend him.”

Jenny

Stelflow unvented hot-water cylinder with connected heating controls and pipework

Hot-water problems we can assess

01

No hot water

02

Hot water running out too quickly

03

Poor pressure at outlets

04

Discharge from safety pipework

05

Noisy operation

06

A cylinder due for annual servicing

Safe, qualified cylinder work

  1. 01

    Tell us what you need

    Send details of your cylinder and hot-water system and the work you have in mind.
  2. 02

    Agree the work and price

    We check the requirements and explain your options before you book.
  3. 03

    We complete the work

    Your engineer carries out the agreed work and tests the installation.
  4. 04

    Ready to use

    We explain the controls, maintenance and any next steps before leaving.

The right route after assessment

Cylinder work varies significantly, so we confirm the fault, access and system arrangement before pricing.

Repair

Accessible components

Controls and components can often be repaired without replacing the complete cylinder.

Upgrade

Replacement when appropriate

We quote a suitable replacement when repair is not economical or capacity needs have changed.

What’s included

Included

  • Fault assessment
  • Safety-control checks
  • Accessible component repair where agreed
  • Servicing or replacement to the quoted scope

Separate or not covered

  • Making access or removing surrounding finishes
  • Network or communal-system work
  • Unquoted pipework alterations
  • Electrical work outside the agreed scope

G3-qualified unvented cylinder work

Unvented cylinders rely on correctly operating safety controls and must be worked on by suitably qualified engineers.

01

G3-qualified engineers

02

Expansion and safety controls

03

Hot-water performance diagnosis

04

Repair and replacement options

Your questions answered

Do unvented cylinders need servicing?
Annual servicing is recommended to check the safety controls and condition of the system.
Can you repair a cylinder rather than replace it?
Often, yes. We diagnose the fault and explain whether an accessible component repair is sensible.
Why is water discharging outside?
Discharge can indicate a safety or expansion-control issue and should be assessed rather than ignored.
Can you increase my hot-water capacity?
We can assess the property and usage, then quote a suitable upgrade if the existing cylinder is undersized.

Covering Ware, Hertford, Hoddesdon, Stevenage, Welwyn, Hitchin, Letchworth, Buntingford, Cheshunt and Broxbourne

Having trouble with your hot water?

Send the cylinder details and symptoms so we can identify the appropriate next step.