ComGas installs, replaces and maintains the mechanical and electrical systems that keep school buildings warm, ventilated and safely powered — with the disruptive work programmed into holiday windows.
Replacing plant in a school pulls in gas, flues, controls, electrical supplies, builders work, weatherproofing and a commissioning record the school can keep. When those elements sit with separate trades, the programme slips and the handover paperwork arrives incomplete.
ComGas is an independent mechanical, electrical and building services contractor based in Farnham. We coordinate the gas, heating, ventilation and electrical work under one programme, with commissioning and record documentation managed as part of the overall delivery.
Work on school sites covers plant rooms and boiler replacement, LTHW heating distribution and controls, commercial gas, plumbing and hot water, ventilation and kitchen extract, electrical installation and testing, heat pumps and building management systems, planned maintenance and wider refurbishment works.
ComGas Services UK Ltd
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Most school work falls into a handful of repeatable packages, whether it runs inside a holiday closure or in an occupied building.
Strip-out and replacement of end-of-life plant, including gas service modifications, condensing boilers, flue design and installation, and full commissioning.
Low temperature hot water distribution, emitters and controls, from single-classroom alterations to whole-building distribution replacement.
Gas supply, pipework and safety work carried out alongside the heating and plant it serves, rather than as a separate visit.
Hot and cold water services and above-ground drainage, including alterations that follow reconfigured teaching and welfare spaces.
Ductwork, extract and cooling, including kitchen extract systems manufactured and installed to suit the building. Gas appliances, interlocks and CP42 inspections in school kitchens are covered on our commercial kitchens and catering page.
Supplies, distribution and power to plant, together with the periodic inspection and testing a school estate needs on record.
Low-carbon heat source replacement, with the distribution, electrical capacity and controls that have to change with it.
Mechanical and electrical packages on refurbishment and remediation projects, coordinated around the wider works programme.
Planned visits, statutory servicing and reactive attendance, with certification held in one place.
Planned. Measured. Commissioned.
At Lowther Primary School in Barnes, the existing gas boiler arrangement was stripped out and replaced with an air source heat pump. The unit was set on a new concrete base and fitted with an acoustic enclosure to suit aesthetic and planning requirements.
A change of heat source only works if the rest of the building keeps up. ComGas replaced the heating distribution and all radiators, upgraded the incoming electrical supply with new trenching and cable ducting, added sub-metering, and installed a replacement building management system with touchscreen control for the site team.
School plant replacement is a programme problem as much as an engineering one. Plant room refurbishments on recent school projects have been completed within two to three week windows, timed to school holidays.
Where a school stays occupied during the works, the sequence and isolation plan are agreed with the site team in advance. All our engineers and staff who attend schools and care homes hold enhanced DBS checks.
Education
Gas plant removed and replaced with an air source heat pump at Lowther Primary School, Barnes, with new heating distribution, a replacement BMS and upgraded incoming electrical supplies over twelve weeks.
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Education
Mechanical, electrical and alarm services isolated, stripped out and reinstated at St Pauls Catholic Primary School, Thames Ditton, so structural steel reinforcement to failing RAAC planks could be installed.
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Education
External kitchen extract ductwork replaced at South Farnham School after failed weather protection let water into the duct, which then leaked into the kitchen through the extract canopy.
View projectReviews from ComGas customers, shown as submitted through Google.
Rated 5.0 out of 5 from 75 Google reviews.
"Really happy with the service! Matt came out to carry out our boiler service and was friendly, professional and did a great job."
Kerryann, Google review, September 2026
"First time we've used this company and it won't be the last. Very professional and efficient in everything they do…"
Ian, Google review, June 2026
"…ended up coming to my place of work and sorting an old heating system that hadn't worked for years in a car showroom & workshop. Great team of guys"
James, Google review, October 2025
If you are planning summer works and need a scope, a survey or a budget figure, the earlier the conversation the better.
Call 01252 214120Yes, and for plant replacement that is usually the sensible approach. Recent school plant room refurbishments have been completed within two to three week windows. Booking early matters, because holiday periods are the busiest time of year for this type of work. Our guide to replacing a school plant room in the summer holidays sets out the planning timeline.
Yes. Where work cannot wait for a holiday, the sequence, isolation plan, access arrangements and site rules are agreed with the site team before work starts, and services are reinstated in phases.
Yes. ComGas is a mechanical, electrical and building services contractor, so gas, heating, ventilation and electrical work sit under one programme, with a single commissioning and handover record.
Most of our published school work is primary schools and school estates across Surrey and south-west London, both directly for schools and alongside main contractors on school sites. We can also support colleges, academies and other education estates with mechanical, electrical and building-services requirements, and every enquiry is assessed on the building, the scope and the programme.
Yes. At a primary school we replaced a gas boiler arrangement with an air source heat pump, including the acoustic enclosure, heating distribution, electrical capacity upgrade and building management controls needed to make it work.
Yes. On a RAAC remediation project we isolated, adapted and reinstated the mechanical and electrical services around a structural steel installation, and completed two weeks ahead of programme so the main contractor could hand over early.
ComGas believes long-term school maintenance relationships should create value beyond the plant room. Depending on the size and scope of the agreement, we may work with schools on agreed initiatives that directly benefit pupils and the wider school community. At All Hallows Catholic School in Farnham, that included sponsoring football, basketball and netball kit for teams in Years 7 to 11. Any arrangement of this kind is discussed and agreed with the school individually.
Tell us the school, the building and what you already know about the plant. We can arrange a survey, produce a scope and give you a realistic programme for the next holiday window.
Current accreditations and registrations.
Message the ComGas office on 01252 214120.