Servicing that fits around you
Our engineers service and maintain air conditioning for homes and businesses, keeping your units at peak performance so you can count on them through the hottest weeks of the year. We can set up a regular servicing schedule or carry out a single visit, and we'll work around your business hours to keep disruption to a minimum.
We look after wall-mounted, cassette and ducted systems, ventilation units and condensate pumps from all the leading brands, including Mitsubishi Electric, Daikin and Fujitsu. Ask for a free quote and we'll talk you through our servicing packages.
Maintenance contracts
Planned servicing at set intervals, with one team looking after your system.
Read more ↓One-off service visits
A single service or health check, whenever you need one.
Read more ↓Deep clean
A thorough strip-down clean that clears dirt, mould and odours.
Read more ↓Chemical coil clean
Restores coil efficiency and improves the air you breathe.
Read more ↓Maintenance contracts
A planned preventative maintenance (PPM) contract is the simplest way to keep your air conditioning running exactly as it should. Regular servicing helps your units work more efficiently, which lowers running costs, and it catches small faults early, before they turn into expensive repairs or breakdowns.
We tailor every contract to your site, your equipment and your budget, with visits every six or twelve months. If we install your system, adding a maintenance contract is the easiest way to protect it from day one.
One-off service visits
Need a service without committing to a contract? Our one-off maintenance visits keep your units running well and pick up developing problems early, so you can avoid costly repairs. Our engineers work on all major brands, as well as ventilation units and condensate pumps.
Request a free quote to get started. If you'd like to move to regular servicing later, we'll happily share details of our maintenance packages.
Problem with your system?
Leaking, not cooling or showing a fault code? We respond to call-outs quickly across London and the South East.
Request a call-outDeep clean service
A deep clean brings your units back to top condition, clears unpleasant smells and lowers the risk of future breakdowns. Book one on its own, or add it to your regular service.
Whenever our engineers are on site, for any reason, they'll let you know if a unit is due a deep clean.
When we recommend a deep clean
New tenancy
Moved into a home or commercial unit with existing air conditioning but no service history? A deep clean gives you a clean, efficient starting point.
No record of the last service
If you can't tell when the system was last looked at, a deep clean and service is the safest way to get it back on track and avoid an emergency breakdown.
Over a year since its last service
Manufacturers recommend regular servicing. A unit left for more than a year will be working harder than it should to hold the right temperature.
Demanding environments
Commercial kitchens, gyms and salons put extra strain on air conditioning. Filters clog faster and odours build up, so a deep clean with odour treatment restores performance.
Chemical coil cleaning
Over time, dust, pollen and bacteria build up on the coils inside and outside your units. Airflow drops, temperatures become harder to control and the system uses more energy. A chemical coil clean is one of the most effective ways to restore performance, especially in busy, high-use spaces.
Why clean your coils?
We recommend cleaning your coils at least once a year. Dirty coils make the system work harder, pushing up energy use and running costs.
What's included in your service
Every visit follows a set checklist, so you know exactly what has been done.
Air conditioning service
Indoor units
- Test the controller: on/off, temperature setting and mode changeover
- Remove, inspect and clean all filters
- Inspect coils and drip trays (chemically cleaned as part of a deep clean)
- Check fan rotation and motor running currents
- Check power, control and BMS cable connections are secure and clean
- Clean condensate pump reservoirs and test pumps and drain lines, where fitted
- Test gravity drains and built-in lift pumps, where fitted
Outdoor units
- Inspect for wear, coil damage and signs of refrigerant leaks
- Clear debris from the coil and straighten fins where needed (chemically cleaned as part of a deep clean)
- Fit gauges and check operating pressures
- Check refrigerant and compressor oil charge if pressures are out of range
- Check fan rotation and motor running currents
- Measure the voltage and current drawn by the unit
- Check power, control and BMS cable connections are secure and clean
Air source heat pump service
- Test control valve sequencing: on/off, temperature control and mode changeover
- Remove and thoroughly clean all strainers
- Check circulating pump and fan rotation and motor running currents
- Check power, control and BMS cable connections are secure and clean
- Clean condensate pump reservoirs and test pumps and drain lines, where fitted
- Inspect for wear, coil damage and signs of refrigerant leaks
- Clear debris from the coil and straighten fins where needed (chemically cleaned as part of a deep clean)
- Check refrigerant and compressor oil charge if pressures are out of range
- Check outdoor fan rotation and motor running currents
- Measure the voltage and current drawn by the unit
Chemical clean
- Isolate the power supply
- Protect walls and floors with waterproof sheets
- Fit a cleaning bag or tray under the indoor unit
- Remove the front cover, filters and louvres
- Apply a non-corrosive cleaner to the evaporator coil
- Chemically clean the blower wheel in place
- Clean and flush the drain pan
- Flush the drain line with water or compressed air
- Wash and dry the filters
- Wipe down the casing and apply a light sanitising spray
- Refit the filters, louvres and cover
- Test airflow, cooling, noise level and drainage
Not included: taking the unit off the wall, dismantling the blower motor or drain pan, refrigerant top-ups or pressure testing.
Strip and clean (deep clean)
- Isolate the power and electrical supply
- Protect walls, floors and furnishings with waterproof sheets
- Take the indoor unit off the wall and fully dismantle it: front panel, filters, louvres, casing, blower wheel, drain pan and motor housing where needed
- Treat the evaporator coil with a strong, air-con-safe cleaner and deep wash away mould, oil, dirt and sludge
- Clean the blower wheel separately
- Scrub the drain pan and flush the drain line clear of sludge and blockages
- Rinse components with high-pressure water where suitable
- Dry, reassemble and refit the unit
- Test drainage, airflow and cooling, and check for unusual noise or vibration
- Sanitise all internal and external surfaces
Not included: outdoor unit cleaning (available on request), refrigerant top-ups, major repairs or replacing damaged parts.
What happens after your service
- 1
A full written report
Your engineer completes and signs a written report covering everything checked on the day.
- 2
Clear recommendations
If anything needs attention, we explain what we found and recommend any further work.
- 3
F-gas records updated
Where required, we update your on-site F-gas register with the leak test method and results.
What our customers say
Frequently asked questions
Can't find what you're looking for? Our team is happy to help.
Ask us a question →What is air conditioning maintenance and why does it matter?
Maintenance means regularly inspecting, cleaning and testing every key part of your system so it keeps working efficiently and safely. A typical service covers filter and coil cleaning, refrigerant pressure checks, clearing the condensate drain, electrical checks and a full test run. Many manufacturer warranties require it, and larger systems also need regular leak checks by law.
How often should air conditioning be serviced?
For homes, a yearly service is the usual standard and is often needed to keep the manufacturer's warranty valid. Commercial systems in busy offices, shops and server rooms are best serviced every six months to protect efficiency and avoid unplanned downtime. Systems that need F-gas leak checks must also have them at set intervals, depending on how much refrigerant they hold.
What's included in a professional service?
An F-gas certified engineer cleans filters and coils, checks refrigerant pressures, inspects and flushes the condensate drain, checks electrical connections, tests controls and thermostats, inspects fans and motors, and runs the system through full heating and cooling cycles. You'll get a written report confirming the condition of your system. Our full checklists are shown above.
What is a PPM contract and do I need one?
A planned preventative maintenance (PPM) contract books your servicing at agreed intervals, usually yearly for homes and every six months for businesses. For commercial sites, it keeps you on top of F-gas leak checks and records, helps protect manufacturer warranties and can support insurance requirements. We build PPM contracts for businesses, offices and property managers across London and the South East.
Is air conditioning maintenance a legal requirement?
For many commercial systems, yes. Under UK F-gas rules, equipment holding 5 tonnes of CO2 equivalent or more of fluorinated refrigerant must be leak checked at least every 12 months, rising to every 6 months from 50 tonnes, and records of those checks must be kept. Breaking the rules can lead to penalties. Most home systems fall below the threshold, but an annual service is still recommended and is often a warranty condition.
How much does air conditioning servicing cost?
It depends on the type of system (split, multi-split, cassette or VRF), how many indoor units you have, whether an F-gas leak check is needed and where your property is. Home servicing and commercial PPM contracts are priced separately. We'll give you a clear, itemised quote after a free assessment.
How do I know my system needs a service?
Common signs include weaker airflow, less cooling or heating than usual, hissing or other unusual noises, musty or chemical smells from the indoor unit, water dripping from the unit, and higher energy bills with no change in use. These usually point to dirty coils, low refrigerant or a blocked drain. Our engineers can visit to diagnose the problem.
Book your air conditioning service
Talk to us about servicing in London and the South East. Call, email or send us a message, and we'll get back to you with a free quote.