HVAC system surveys and advice
Review heating, ventilation and cooling arrangements, reported comfort issues, plant condition, controls and access so the next step is based on the actual building.
Learn more about HVAC system surveys and advice
HVAC AND AIR CONDITIONING IN SURREY
HVAC and air conditioning support for Surrey buildings
ComGas supports Surrey building owners, facilities teams and contractors with HVAC, air conditioning and building-controls work from our Farnham base. We help define practical scopes for comfort, ventilation, cooling, plant performance and planned maintenance, subject to survey and site requirements.
Gas Safe RegisteredOFTEC RegisteredREFCOM F-Gas CertifiedCHAS AccreditedConstructionline Approved
A practical, evidence-led approach
Building services planned around your premises
Heating, ventilation and air conditioning rarely operate as isolated pieces of equipment. A commercial building may combine boilers or heat pumps, air-handling units, split or VRF air conditioning, pumps, fans, filters, sensors and a building management system. If one element is changed without understanding the others, the result can be poor comfort, wasted energy, control conflicts or an awkward maintenance burden. ComGas can review the stated problem, inspect the relevant equipment where needed and set out a proportionate repair, installation, replacement or maintenance scope.
Our HVAC and air-conditioning support is intended for commercial and managed buildings, including offices, education, care, healthcare, hospitality, industrial and mixed-use premises. We plan around occupancy, noise, refrigerant and electrical requirements, condensate drainage, roof or plant-room access and the information available at handover. ComGas is REFCOM F-Gas Certified and can support work involving F-gas equipment within the applicable competence and project scope; we do not treat a service visit as a substitute for an appropriately designed system or the client's statutory responsibilities.
Site context
Planning HVAC work across Surrey's varied building stock
Surrey County Council describes its non-domestic energy assessment service as a way to identify energy-saving opportunities in community and commercial buildings. That is a useful starting point for an HVAC brief: understand the building's operating pattern, fabric, controls and plant before deciding whether the priority is repair, recommissioning, replacement, zoning, ventilation or a lower-carbon option. An assessment or survey can also expose missing asset data that would otherwise make a quotation provisional.
The council also provides information for organisations looking at decarbonisation measures such as upgrading heating and other building systems. For a Surrey estate, the practical question is often how a proposed cooling or heating change interacts with electrical capacity, roof loading, acoustics, planning constraints, tenant use and future phases. We can discuss the technical information needed for a staged plan, while approvals, funding and statutory permissions remain matters for the client and its professional advisers.
Site logistics can be as important as the selected unit. Confirm the route for condensers, air-handling equipment and replacement components; the location of lifting points; roof permits; plant-room ventilation; working-at-height controls; delivery restrictions; and how water, refrigerant, electrical and controls work will be coordinated. On occupied premises, agree noisy work, isolations, temperature-sensitive areas and access to ceiling voids before the programme is fixed.
Capabilities
HVAC and air-conditioning services for Surrey sites
A useful enquiry describes the building, the current symptoms and the equipment that is already installed. The following services can be combined into a survey, a defined project or a planned maintenance approach.
Air conditioning installation and replacement
Plan split, multi-split or other air-conditioning work around duty, room use, external-unit position, condensate, electrical supply, noise and refrigerant requirements.
Learn more about Air conditioning installation and replacementVentilation and air movement
Support ventilation, extract and air-distribution requirements where airflow, filtration, heat recovery, plant interfaces and occupied-space operation need to be considered together.
Learn more about Ventilation and air movementBMS and controls coordination
Investigate sensors, time schedules, zoning, sequencing and plant interfaces, with a focus on usable controls and a clear commissioning handover.
Learn more about BMS and controls coordinationPlanned HVAC maintenance
Build inspection, cleaning, filter, condensate, controls and condition tasks into a maintenance plan suited to the equipment and the building's operating calendar.
Learn more about Planned HVAC maintenanceHeating and lower-carbon integration
Consider how boilers, heat pumps, emitters, hot water and controls interact when an estate is reviewing energy performance or phased plant replacement.
Learn more about Heating and lower-carbon integration
Planning and delivery
What to prepare before an HVAC or air-conditioning enquiry
The more clearly the existing system and the building constraints are described, the easier it is to identify competence, equipment, access and commissioning requirements. Share available records rather than assuming every item must be recreated before a first discussion.
Asset schedule and history
List unit types, makes, models, capacities, refrigerants, locations, installation dates and known faults. Include service reports, F-gas records, inspection reports, warranties, drawings and control schedules where available.
Building use and comfort brief
Describe occupancy, room functions, hours, heat-sensitive equipment, ventilation expectations, hot or cold complaints and any areas that must remain operational during the work.
External-unit and plant access
Confirm roof, façade, yard and plant-room access, lifting or scaffold requirements, working-at-height arrangements, delivery limits, acoustic sensitivities and the route for removing old equipment.
Refrigerant and compliance information
Identify whether equipment contains F-gases, who currently maintains it and which records exist. Any leak, recovery, repair or decommissioning activity needs competent handling and suitable evidence.
Condensate, power and services
Show available electrical supplies, isolators, drainage routes, pipe runs, penetrations, fire stopping and any shared services. A visible indoor unit does not reveal all the enabling work.
Controls and commissioning
Set out the desired schedules, zoning, set points, alarms, user access and BMS interfaces. Agree functional testing, user instruction, as-fitted information and responsibility for ongoing settings.
Premises and operations
Sectors using HVAC and air conditioning in Surrey
Commercial offices
Plan comfort, ventilation, cooling, controls and maintenance around tenants, meeting rooms, IT areas, landlord interfaces and working hours.
Learn more about Commercial officesEducation and schools
Coordinate HVAC and cooling work with term dates, safeguarding, classroom use, access controls, examination periods and the school's available estate information.
Learn more about Education and schoolsCare homes and healthcare
Consider resident or patient comfort, infection-control requirements, hot-water interfaces, occupied areas and the need for carefully sequenced access.
Learn more about Care homes and healthcareIndustrial and manufacturing
Assess process-adjacent cooling, extract, ventilation, controls, plant access and production constraints before work is specified.
Learn more about Industrial and manufacturing
Useful answers
Frequently asked questions
Need an answer for a specific site? Send us the address, building use and systems involved.
Contact ComGasCan ComGas inspect an existing air-conditioning system before quoting?
Yes. Where the requirement cannot be safely or accurately defined from the available information, a survey can record equipment, access, condition, controls, drainage and likely enabling work. Any quotation remains subject to the agreed scope and site findings.
Does every commercial air-conditioning system need an inspection report?
In England and Wales, government guidance says the Energy Performance of Buildings regulations affect air-conditioning systems with an effective rated output above 12 kW, including combined systems under single control. The building owner or manager should establish the applicable duty and keep the required report; ComGas can discuss the technical information needed for the work.
Can you work on F-gas equipment?
ComGas is REFCOM F-Gas Certified. We can discuss servicing, leak-related work, recovery, repair or decommissioning within the equipment, competence and project scope. Equipment records and the refrigerant type should be provided at enquiry.
What if the problem is poor comfort rather than a failed unit?
Poor comfort can arise from sizing, zoning, schedules, sensors, airflow, filters, building fabric or user settings as well as equipment failure. A survey or controls review is often more useful than replacing a single unit without checking the wider system.
Can HVAC work be carried out while a building is occupied?
Often, but the method depends on access, noise, dust, isolations, work at height, refrigerant work and the areas affected. Agree working hours, temporary measures, safeguarding, permits and communication with the site team before the programme is confirmed.
Will you provide a fixed response time for an HVAC fault?
No fixed arrival time is promised. Emergency support may be requested, subject to engineer availability and site requirements. For recurring risk, a planned maintenance or maintenance-contract discussion may provide a more structured approach.
Planning, safety and local-context sources
Authoritative references used to inform this page. External sources do not imply endorsement of ComGas or prove project history.
- GOV.UK: A guide to air-conditioning inspections in buildingsGovernment guidance on systems over 12 kW, combined systems under single control and the owner or manager responsibility for inspection reports.
- Surrey County Council: Non-Domestic Energy Assessment ServiceOfficial Surrey service information describing identification of energy-saving opportunities in community and commercial buildings.
- Surrey County Council: How to decarbonise your organisationOfficial Surrey information on organisational decarbonisation measures, used for the local planning context rather than as an endorsement.
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