Highly skilled engineers, preventative maintenance and full regulatory compliance for every type of air conditioning and ventilation plant.
Planned preventative maintenance by qualified engineers covering cassettes, chillers, air handling units and close control systems, tailored to your equipment and budget. It includes leak prevention and refrigerant management under the F-Gas Regulation, with relative refrigerant loss kept below a maximum of 5%.
Cool Stream Ventilation employs highly skilled engineers to ensure air-conditioning and ventilation equipment is maintained to the highest possible standards. Our preventative maintenance programmes are tailored closely to the requirements of our clients in terms of environment, type of equipment and budgets. We operate in all market sectors and maintain every type of air conditioning system, including cassettes, chillers, air handling units and close control systems.
Working with the main suppliers within the industry, we ensure spares are sourced in a timely manner and at competitive prices.
Engineers qualified to current industry standards, protecting you from regulatory penalties.
Best-available techniques minimise relative refrigerant loss, with safe disposal of waste refrigerant.
Every installation pressure-tested from day one for a leak-tight system.
Competitive replacement of systems using R22 refrigerant, with minimal disruption.
As a contractor, we know that fixing leaks is just treating symptoms. We provide a complete expert service, advising on future refrigerant strategies and carrying out full system analysis to ensure your systems maintain performance — protecting you against equipment breakdowns, regulatory penalties and rising energy costs. Leak detection starts at the time of installation: our good practice from day one means every installation is properly tested in accordance with BS EN378, and pressure testing ensures we install a leak-tight system.
Air conditioning and ventilation plant works hard and is easy to forget until it fails on the hottest day of the year or in the middle of Saturday service. Planned preventative maintenance (PPM) swaps surprise failures for scheduled visits. Clean filters and coils let the system move air and heat efficiently, so it uses less energy. Faults are found while they are small. Refrigerant leaks are caught early, which matters for both cost and the F-gas rules. And records are kept up to date, which matters for insurers, landlords and auditors.
We maintain every type of air conditioning system, including cassettes, chillers, air handling units and close control systems, across all market sectors. Maintenance programmes are tailored closely to your environment, type of equipment and budget, rather than a one-size-fits-all contract.
| Plant | Typical checks |
|---|---|
| Split, cassette and VRF indoor units | Filters, coils, condensate drains and pumps, fan operation, controls |
| Outdoor units and condensers | Coil cleanliness, fan motors, electrical connections, refrigerant leak checks |
| Chillers and pumps | Operating pressures and temperatures, water treatment, pump condition |
| Air handling units | Filters, belts and bearings, coils, dampers, heat recovery section |
| Close control units | Humidification, temperature and humidity control, alarms |
| Ventilation and extract fans | Motor condition, airflow, vibration, controls |
If your air conditioning contains F-gases, you are responsible as operator for leak checks and repairs. GOV.UK sets leak-check intervals by the charge in the equipment (every 12 months for at least 5 tonnes CO2 equivalent, every 6 months from 50 tonnes, every 3 months from 500 tonnes, with the interval doubled where leak detection is fitted), requires leaks to be repaired as soon as possible and rechecked within a month, and expects records to be kept. See the GOV.UK guidance for the current rules. We implement measures in accordance with the best available techniques to reduce relative refrigerant loss below a maximum of 5%, and all installations are tested to BS EN 378. See our F-Gas guide.
Commercial kitchen extraction is part of the same plant picture. Baffle filters need regular cleaning, fans and belts need checking, the gas interlock should be tested, and the ductwork has to be kept free from grease. Specialist duct cleaning follows guidance such as BESA's TR/19, and the frequency depends on how heavily the kitchen cooks. We design extract ductwork with access doors so that cleaning is possible. See extraction cleaning and TR/19 and the warning signs in 5 signs your kitchen extraction needs attention.
Reactive maintenance means calling someone when something breaks. It looks cheaper until you count the cost of the breakdown itself: a restaurant that cannot cool its dining room on a hot Saturday, an office that has to send staff home, or a kitchen that has to stop cooking because the extraction has failed. Planned maintenance spreads the cost, finds wear before it becomes failure, keeps energy use down and gives you the records that insurers, landlords and regulators ask for. It also lets repairs be scheduled for quiet periods rather than the busiest ones.
A good programme is specific. Before you sign, agree:
Our programmes are tailored closely to your environment, type of equipment and budget, so we start from your plant list and how the building is used.
| Time of year | Typical focus |
|---|---|
| Early spring | Check cooling readiness: outdoor coils, refrigerant checks, controls, condensate drains |
| Early summer | Filters and coils on busy plant, a second look at kitchens and plant rooms that run hot |
| Autumn | Heating mode checks, filters, fan belts and bearings on air handling units |
| Before peak trading (November) | Kitchen extraction filters, make-up air, gas interlock test and a check of any plant that must not fail over the Christmas period |
See our November checklist in winter and Christmas ventilation checks.
We cover customers across the UK. Call 07759 696007 or WhatsApp us with your location and equipment list.
To quote accurately we need a list of the equipment (type, make, model, quantity and location), the age and condition of each unit, any previous service records and F-gas leak-check records, how the building is used and when access is possible, and any problems you already know about. A short walk-round at survey fills any gaps. Send what you have; missing information is not a barrier, it simply means we visit first.
Send us a list of your equipment and the location of your site, and we will suggest a programme and quote for it. For urgent or emergency problems, call or WhatsApp 07759 696007 rather than waiting for an email reply.
We maintain every type of air conditioning system, including cassettes, chillers, air handling units and close control systems, across all market sectors.
Yes. Preventative maintenance programmes are tailored closely to your environment, type of equipment and budget.
We implement all measures in accordance with the best available techniques to reduce relative refrigerant loss below a maximum of 5%, and all installations are tested to BS EN378.
Yes. We maintain plant for customers across the UK. Call 07759 696007 or WhatsApp us with your location.
PPM is a schedule of regular inspections and servicing carried out before things fail, so faults are found early, energy use stays low and compliance records stay up to date.
At least once a year is typical, with more frequent visits for busy or critical sites. F-gas leak-check intervals depend on the refrigerant charge.
The operator of the equipment, usually the business using it, is responsible for arranging leak checks by suitably certified engineers and for keeping records.
Typically filters, coils, drains, fans, electrical connections, controls and a refrigerant leak check, plus a report. We tailor the checklist to the equipment.
Yes. We maintain every type of air conditioning system across all sectors.
Clean coils and filters and correct operating pressures let plant run efficiently, which helps keep running costs down.
For urgent or emergency problems call or WhatsApp 07759 696007 rather than waiting for an email reply.
We design, install and commission them and can advise on maintenance; ask us what suits your kitchen.
Yes. Programmes are tailored closely to your environment, equipment and budget.
Yes. Call or WhatsApp 07759 696007 with your location.
Wherever your site is, we survey, design, manufacture and install. Find your nearest area, or call 07759 696007.
