New pipework runs, alterations for a refurbishment or extension, and pipework sized correctly for the appliances and plant you actually have — ComGas designs, installs and alters commercial gas pipework for offices, schools, retail premises and other commercial buildings across Surrey and surrounding counties.
Commercial gas pipework has to be sized correctly for the appliances and plant it serves, routed sensibly through a building, and installed so that it can be maintained, tested and, eventually, altered again without unnecessary disruption. Getting this right at the outset avoids problems further down the line — undersized pipework that limits future appliance capacity, or a run that is difficult to access for future testing and maintenance.
This page covers gas-specific pipework work only. If you also need general commercial water or heating pipework — for plumbing, hot water or heating distribution rather than gas — that sits within our wider commercial plumbing and heating services; see our Plumbing & Heating page for that scope. ComGas carries out gas pipework design, installation and alteration as a standalone piece of work, or as part of a wider boiler, plant room or refurbishment project.
Every new or altered gas pipework installation is tightness tested, and purged where required, before it is put back into service — see our dedicated Gas Tightness Testing and Gas Purging pages for how those stages work.
ComGas Services UK Ltd
Commercial gas pipework from Farnham, Surrey.
Whether it is a single new appliance connection or a full plant room feed, we assess the existing installation and design pipework to suit.
Design and installation of new commercial gas pipework runs, sized to the appliances and plant they will serve.
Extending, re-routing or amending existing pipework for a refurbishment, fit-out, extension or change of appliance.
Pipework serving plant rooms with multiple boilers, calorifiers or other gas-fired equipment, designed to support the whole installation.
Every new or altered pipework installation is tightness tested, and purged where required, before appliances are commissioned.
Planned. Professional. Practical.
We start by assessing the existing pipework and installation, the appliances and plant it needs to serve now, and any reasonably anticipated future demand. From there we design a route and pipe sizing that fits the building, before agreeing the scope and any access or working-hours constraints with you.
Installation is carried out by Gas Safe registered engineers, with the work sequenced around your operations where the building is occupied. Once installed, the pipework is tightness tested and, where required, purged, before any appliance connected to it is commissioned or put back into service.
Every commercial building presents different constraints — occupied space, restricted access routes, other services sharing the same ceiling void or riser, and operating hours that limit when disruptive work can happen. We consider all of this before finalising a design, so the route we propose is one that can realistically be installed, maintained and, if needed, altered again in future.
Every pipework project is scoped to the specific building and installation. Sizing, routing and sequencing are agreed with you before work begins rather than assumed from a standard template.
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Common questions about designing, installing and altering commercial gas pipework.
Talk to the pipework teamPipe sizing is based on the actual gas demand of the appliances and plant being served, along with any reasonably anticipated future demand, taking account of pipe run length and any pressure loss along the route. We assess this before finalising a design rather than using a standard size regardless of the installation.
Yes. We regularly extend, re-route or amend existing commercial gas pipework as part of refurbishment, fit-out or change-of-use projects. We assess the existing installation first, so the alteration is designed around what is actually there rather than assumed.
Yes. Every new or altered pipework installation is tightness tested, and purged where required, before any connected appliance is commissioned or put back into service. See our dedicated Commercial Gas Tightness Testing and Gas Purging pages for more detail on each stage.
Yes, this is common. We discuss access, working hours and any specific operational constraints before agreeing a programme, and sequence work to minimise disruption where the building remains in use during the project.
Yes. Pipework is frequently part of a wider project such as a new boiler, plant room upgrade or catering equipment installation. We can scope the pipework alongside the main installation so the two are properly co-ordinated.
A pipework quotation sets out the proposed route, sizing and any isolation valves or access points included, along with the tightness testing and purging carried out on completion. Anything outside that agreed scope is separately discussed before it is added to the work.
Tell us about the building, the appliances or plant involved and any access or timescale constraints. We can advise on the right approach and arrange a survey where appropriate.
For an urgent enquiry, please call our office directly.
Current accreditations and registrations.
Message the ComGas office on 01252 214120.