New bathroom pipework, a kitchen refit, an outside tap, or a water supply that needs reviewing before other work goes ahead — we plan and install domestic plumbing properly, considering the whole property's water distribution rather than one fitting in isolation. Covering Farnham, Guildford, Godalming, Farnborough, Fleet and Camberley.
Plumbing planned around the whole property, not one fitting.
This page covers planned domestic plumbing — installing, upgrading or extending the pipework and fittings that supply water around a property. That includes new bathrooms and kitchens, additional outside taps, upgraded pipework during a renovation, and reviewing a property's water distribution before other work depends on it. If something has already failed, such as a leak, a burst pipe, a blockage or no water, that's an urgent fault rather than planned work, and it's covered on our Plumbing Repairs page instead.
This work suits homeowners planning a new bathroom, kitchen or extension that needs plumbing designed in from the start; landlords and letting agents upgrading a rental property's plumbing between tenancies; and property managers coordinating planned plumbing work as part of a wider refurbishment.
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Planned plumbing work
Pipework planned around the property, not added on top of it.
When we plan new plumbing work, we look at the existing water distribution, pressure and isolation arrangements first, rather than simply adding a new branch to whatever pipework happens to be nearest.
Water Distribution & Pressure
How hot and cold water is distributed around a property affects flow rate, pressure at each outlet, and how quickly hot water reaches a tap that's a long run from the cylinder. We look at the existing distribution before adding new pipework.
Existing pipe sizes, routing and material assessed before adding new branches
Incoming mains pressure checked before installing pressure-dependent fittings such as a mixer shower
Pipework feeding the point of use checked when flow is poor at a specific outlet
Existing cylinder and tank arrangement reviewed at summary level as part of wider plumbing projects
Every property should have a clearly identified main stopcock, and ideally isolation valves at individual appliances and outlets, so a single fitting can be shut off without cutting water to the whole property.
Main stopcock location identified and checked
Isolation valves fitted at individual appliances and outlets where missing
Older properties assessed for inadequate isolation provision
Improved isolation planned in as part of wider plumbing work
Bathroom and kitchen installations carry the highest concentration of plumbing connections in most homes, usually planned around a fixed layout such as a new suite, a repositioned sink, or additional outlets.
Pipework planned around the confirmed bathroom or kitchen layout
Runs positioned to be accessible for future maintenance
Pipe sizing suited to the fittings served, including where several outlets may run at once
Coordination with other trades during a wider renovation
An outside tap needs a dedicated supply taken from an appropriate point on the internal pipework, with isolation and a way to drain it down before winter to avoid a frozen and split pipe.
Dedicated supply taken from an appropriate internal connection point
Isolation valve fitted to the external supply
Drain-down arrangement to prevent freezing and pipe splits
Connection point chosen so it doesn't compromise pressure or flow elsewhere
Copper, push-fit plastic and PEX-type pipework are all in current use, each with genuine advantages depending on the application. Much of the ComGas operating area also sits on hard water, which affects pipework and appliances over time.
Copper, push-fit plastic and PEX-type pipework specified to suit each run
Material chosen for exposed, high-heat or concealed applications
Hard water considerations discussed for pipework, cylinders and appliances
Water treatment options considered as part of wider planned work
Low pressure at one outlet is usually the pipework, not the mains supply.
How hot and cold water distribution is laid out affects flow rate, pressure at each outlet, and how quickly hot water reaches a tap that's a long pipe run from the cylinder. When we plan new plumbing work, we look at the existing distribution first — pipe sizes, routing and material — rather than simply adding a new branch to whatever pipework happens to be nearest.
Low pressure or poor flow at a specific outlet is often a symptom of pipework sized for a different era of usage, such as narrow-bore pipe feeding a modern shower, or a long unsupported run losing pressure over distance. Before installing new fittings that depend on decent flow, such as a mixer shower or multiple outlets running at once, we check the incoming mains pressure and the pipework feeding the point of use, so the new installation performs as expected rather than being blamed for a supply problem it inherited.
Existing pipe sizes, routing and material assessed before new work is planned
Incoming mains pressure checked before installing pressure-dependent fittings
Pipework feeding the point of use checked before a supply is blamed for a local problem
Distribution reviewed as a whole rather than treating each outlet in isolation
Reviews from real ComGas customers, shown as submitted through Google.
Posted on Google
Nick
3 September 2026
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Matt from ComGas Services UK Ltd was very professional, polite, friendly and quick installing a new shower in my bath (and at a better height for me) and a much easier press-in plug for my sink! He left the place spotless. This is the kind of service and installation people dream about - a 5 star service (see photos).
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Laura Peters
17 August 2026
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I have used Comgas twice and both times have been very happy with the service. Very friendly and honest. The most recent time, the job turned out to be a lot bigger than they initially thought but it was no issue and Paul stayed the extra time to make sure the job was done properly! He was really tidy, took a lot of care with the work that was done and took the time to explain what he was doing and why. Pleased to have found a reliable heating company!
Posted on Google
James Ross
8 August 2026
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I had an issue with my boiler and Matt came out to have a look the same day and managed to fix it. Great, professional service. Highly recommend.
Posted on Google
Ian Chevalier
11 June 2026
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First time we've used this company and it won't be the last. Very professional and efficient in everything they do and Matt was excellent in his knowledge and efficiency when dealing with our gas and plumbing problems.
Posted on Google
Karen Flackett
20 May 2026
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Excellent service. Matt came & fitted 2 taps & waste pipes he was polite & friendly & carried out the work efficiently & in a timely manner.
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Paul Norris
30 April 2026
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Fantastic experience from the chaps at ComGas! Special thanks to Matt who removed an old boiler and replaced with a new energy efficient to satisfy the demands of a five bed house with a few bathrooms/baths and showers. The ComGas admin team and Lee were fantastic too on the booking and administration side of things!
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Julie Galvin
21 April 2026
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Here at St Joseph's we have worked with Comgas for a number of years. They have completed big projects and undertake regular maintenance for our school. They price fairly, and their work is completed to a very high standard. All the engineers carry a DBS which makes life so much easier when trying to book an engineer visit.
On the rare occasion that we have an emergency I can trust that Lee will get one of his engineers to respond quickly and efficiently.
Nothing is too much trouble and no job is too small.
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Chesca Haley
16 April 2026
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Lee and the team are amazing! So helpful, so knowledgeable and really look after their customers. Highly recommend.
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Sarah Rogers
6 April 2026
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Absolutely amazing service, always a thorough job and very knowledgable. Really nice guys too. Lee has sorted numerous issues at work and around our house. We have recommended to friends and family who are also very happy
Posted on Google
Alison Molan
25 March 2026
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Lovely engineers, Matt and Jack, were a pleasure to have in the house. Thorough, knowledgeable, tidy and polite. Would highly recommend.
Residential plumbing questions
Frequently asked questions.
If you have a current fault such as a leak, burst pipe, blockage or loss of water, that's covered on our Plumbing Repairs page, which is set up for urgent response rather than planned scheduling.
No. This page covers planned plumbing installation and upgrade work — new bathrooms, kitchens, pipework and outside taps. If you have a current fault such as a leak, burst pipe, blockage or loss of water, that's covered on our Plumbing Repairs page, which is set up for urgent response rather than planned scheduling.
Can you fit a new bathroom or kitchen as part of a wider renovation?
Yes. We install the plumbing pipework and connections for new bathrooms and kitchens, working around the layout confirmed for the room and coordinating with any other trades involved in the renovation.
Why is my water pressure low at just one tap or shower?
This usually points to the pipework serving that specific outlet — pipe size, routing, or a long run losing pressure — rather than a fault with the incoming mains supply. We check the pipework feeding the point of use before recommending a fix.
Do you install unvented hot water cylinders?
Cylinder selection and installation, including vented and unvented systems, is planned to be covered in more depth on a dedicated hot water cylinders page. In the meantime, we assess your existing cylinder and tank arrangement at a summary level as part of wider plumbing work — get in touch to discuss your specific requirement.
Should I upgrade my pipework if I'm not changing any fittings?
Not usually as a standalone project, but it's worth reviewing pipework condition and sizing whenever other work is planned nearby, such as a bathroom refit or an extension, since it's far more disruptive to address afterwards than at the same time.
Does hard water actually affect my plumbing?
In this region, yes, over time. Hard water contributes to limescale build-up in pipework, cylinders and appliances, which can reduce flow and shorten the working life of fittings. We can discuss water treatment options where it's relevant to a planned project.
What pipe material will you use for my installation?
It depends on the specific run and location — copper, push-fit plastic and PEX-type systems are all in current use, each suited to different applications. We specify what's appropriate for each part of the installation rather than using one material throughout regardless of context.
