Commercial HVAC Maintenance in London

What commercial HVAC maintenance involves

Planned preventive maintenance (PPM) replaces “fix it when it breaks” with a schedule of inspections, cleaning, testing and adjustment. Each asset in the building is listed, given a set of tasks and a frequency, and visited on a programme agreed with the facilities team.

On a typical visit an engineer will:

• inspect the equipment and its surroundings for damage, leaks, corrosion, vibration and noise
• check, clean or replace filters and record their condition
• clean coils, condensate trays and drains to stop blockages and microbial growth
• check fans, belts, pulleys, bearings and motor current draw
• test controls, sensors, valves and actuators, and confirm setpoints and time schedules
• carry out refrigerant system checks and F-gas leak checks where the system falls within the regulations
• record readings and findings, and raise any defects with a recommended remedy

You receive a record for every visit, so you have evidence of what was done and a clear list of anything that needs a decision.

When planned maintenance is needed

Maintenance is worth setting up whenever a building relies on mechanical heating, cooling or ventilation to stay usable. It is particularly important when:

• the building is occupied by staff, guests or the public who depend on comfortable, well-ventilated space
• the plant serves critical areas such as server rooms, kitchens or treatment rooms
• a lease, insurer or warranty requires documented maintenance
• systems are ageing and breakdowns are becoming more frequent
• you have taken over a building and do not know the condition of the plant

Equipment we maintain

See the dedicated pages for air handling units, fan coil units, air conditioning, chillers and heat pumps.

Our process

1. Enquiry. Tell us about the building, the plant and any current problems using the form below or by phone.
2. Site survey. We visit to record the assets, their condition, access requirements and any existing records.
3. Schedule and quotation. You receive a proposed task list and frequency for each asset, with a quotation.
4. Planned visits. Engineers attend on the agreed programme and work to the site’s permits and induction rules.
5. Reporting. Each visit is documented, with defects and recommendations listed for you to approve.
6. Review. The schedule is reviewed as equipment ages, usage changes or new plant is installed.

Typical applications

Planned HVAC maintenance suits offices, hotels, retail units and shopping centres, warehouses, schools and colleges, healthcare premises and mixed-use buildings. See industries we support for how requirements differ between building types.

Maintenance considerations

• Asset list first. Accurate maintenance starts with knowing exactly what is installed. If the asset register is incomplete, the first visits should fill the gaps.
• Frequencies should be justified. Over-maintaining wastes budget; under-maintaining shortens equipment life. Base frequencies on manufacturer guidance, SFG20 and the duty the plant sees.
• Filters matter more than they look. Blocked filters increase fan energy and reduce airflow. Track pressure drop rather than changing filters purely by date where you can.
• Records are part of the job. Insurers, landlords and auditors ask for evidence. Keep visit records, F-gas logs and defect reports together.
• Plan for replacement. Maintenance reports should help you forecast when equipment is nearing the end of its economic life. See HVAC system assessments.

Compliance and safety

Safety first. HVAC plant combines rotating machinery, electrical supplies, pressurised refrigerant and work at height. Maintenance must be carried out by competent engineers under safe isolation procedures and the site’s permit-to-work arrangements.

Relevant duties include the Workplace (Health, Safety and Welfare) Regulations 1992 for ventilation and temperature, the F-gas regulations for leak checking and record keeping on refrigerant systems, TM44 inspections for air conditioning systems over 12 kW, and the legionella risk assessment duties described in HSE’s ACOP L8. Work on refrigerant circuits must only be done by engineers holding the appropriate F-gas certification. Ask us for the relevant certificates for the engineers attending your site.

Coverage across London

We take maintenance enquiries for commercial buildings across London and Greater London. Whether we can take on a particular site depends on its location, the plant installed and the visit programme required. See areas we cover for details.