Visual & Safety Inspection
We start by checking the indoor and outdoor units externally for damage, corrosion or obstructions, including the outdoor condenser's mounting and clearance.
Regular air conditioning maintenance across South London helps keep your system running efficiently, reliably, and hygienically. Furthermore, our engineers can provide ongoing servicing to help keep your system performing when you need it most.
Whether we installed your system or another engineer did, our F-Gas certified team the same engineers you already trust for heating can take care of it. We cover Bexley, Greenwich, Lewisham, Bromley, Croydon and all South London areas, plus extended coverage to Central London and Wandsworth. As a new service, we don't yet have fixed online pricing get in touch and we'll quote based on your system.
South & Central London coverage
Typical single-split visit
Appointments available
Tailored to your system
Skipping a service might feel like a saving today, but it costs far more long-term. Here's why South London homes and businesses prioritise yearly AC servicing.
Most manufacturers require annual servicing to keep warranties valid. Skip a service on your Daikin or Mitsubishi Electric system, and a 5–7 year warranty becomes worthless if a fault arises later.
A minor refrigerant leak spotted during servicing costs little to fix. Left unchecked, it becomes a compressor failure and full replacement on the hottest week of the year.
Dirty filters and coils circulate dust, mould spores and allergens. Servicing removes buildup that can affect breathing, especially for households with asthma or allergies.
Blocked filters, dirty coils and low refrigerant charge all reduce efficiency. A poorly maintained unit can use significantly more electricity to deliver the same cooling.
Well-maintained AC units commonly last 10–15 years. Neglected systems can fail well before that, bringing forward a costly replacement.
Commercial and larger systems fall under F-Gas leak-check obligations. Our AC service can be combined with an F-Gas compliance certificate in one visit.
Some buildings and commercial insurance policies require proof of regular AC maintenance when making equipment-related claims. No service record could mean a rejected claim.
Regular maintenance helps your AC cool better, use less energy, and avoid unexpected breakdowns. We inspect, clean, and service your system to keep it reliable throughout the year.
Keep your single-split AC clean, efficient, and ready to perform. Regular maintenance helps maintain reliable cooling, improve airflow, and catch potential issues before they turn into costly repairs.
- Ideal for bedrooms, home offices, garden rooms or small shops
- Cleaning and inspection of indoor and outdoor units
- Filters, coils, drainage and airflow checked for proper operation
- Helps improve cooling efficiency and extend system lifespan
Regular maintenance keeps your air conditioning system clean, efficient, and reliable. Our service helps prevent common problems, maintain consistent cooling, and extend the life of your equipment.
- Ideal for homes, offices, shops, and commercial spaces
- Includes filter, coil, drain, and general system checks
- Helps maintain efficient cooling and airflow
- Identifies potential issues before they become costly repairs
What happens when you book an AC service from first contact to written documentation.
We start by checking the indoor and outdoor units externally for damage, corrosion or obstructions, including the outdoor condenser's mounting and clearance.
Filters are removed, inspected and cleaned or replaced. A blocked filter is the most common cause of reduced cooling and poor air quality.
The indoor coil is checked for dust, mould and ice buildup, which restricts airflow and reduces efficiency if left untreated.
The outdoor unit's coil and fan are inspected and cleaned of debris, leaves and dirt that reduce heat rejection and increase running costs.
We test refrigerant pressure against manufacturer specification and check for leaks, which affect both performance and F-Gas compliance.
Condensate drains and pumps are checked and cleared to prevent water leaks into ceilings, walls or window surrounds.
Electrical connections, isolators and safety cut-outs are tested to confirm safe operation and reduce fire risk.
We confirm the unit responds correctly to thermostat and remote commands, and check airflow and fan speed settings across all modes.
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Our engineers are trained and equipped to service the air conditioning brands most common in South London homes and offices:
Daikin is one of the UK's most widely installed AC brands. Our engineers are Daikin approved with training on their split and multi-split ranges, following manufacturer schedules to keep warranties valid.
As Mitsubishi Electric approved engineers, we service the full range from single split to city-multi VRF systems, checking refrigerant charge and controls as standard.
LG and Samsung systems are common in newer developments. We follow brand-specific service procedures and check inverter compressor performance and drainage.
Both ranges require attention to filter and coil cleaning schedules. Heat exchanger inspection and refrigerant checks are included as standard.
We also service Fujitsu, Gree, Midea, Hitachi and most other brands. Got an older or uncommon system? We can likely still service it, just ask when booking.
Don't worry, our engineers can identify and service any make or model. Call us for expert diagnosis before booking.
AC servicing is a newer offering for us, so we don't have fixed prices listed online. Tell us your system type and number of units and we'll put together a clear, no-obligation quote.
Several factors influence how long your AC service takes:
A single split system typically takes 45-60 minutes. Multi-split and VRF systems with several indoor units take longer, proportional to the number of units.
Each additional indoor unit adds roughly 20-30 minutes for filter, coil and airflow checks.
Newer units in good condition are quicker to service. Older or neglected systems may need more thorough cleaning and inspection.
Ground-level condensers are quickest to reach. Roof-mounted, high-wall or plant-room installations can add time for safe access.
Well-maintained, regularly serviced units are straightforward. Systems that haven't been serviced for years may need additional attention.
Not all AC problems are equal here's how to tell if you need an emergency callout.
Not sure if you have an emergency? Call us and we'll help assess urgency and prioritise accordingly.
South London's diverse building stock each has specific servicing considerations:
Period properties common across Greenwich, Blackheath and Dulwich often have condensate routing and pipework runs that need extra care to avoid damage to original features.
Predominant across Bexley and Bromley. Wall-mounted splits are common, usually with straightforward access for filter and coil servicing.
Through-wall and compact split units are common. We check communal drainage routes and confirm noise and vibration levels are within building rules.
Greenwich Peninsula and Canada Water developments often feature multi-split or VRF systems with several zones, requiring more comprehensive controls checks.
Larger multi-zone systems in offices and retail units typically need more frequent servicing and fall under stricter F-Gas record-keeping requirements.
Legal requirements every engineer must follow and why they exist.
UK F-Gas Regulations require systems holding a set refrigerant charge to have regular leak checks by a certified engineer, with records kept for at least five years.
Most manufacturers require annual servicing by a qualified engineer to maintain warranty cover. Our approved status means your warranty stays valid.
Commercial systems above a set refrigerant threshold must have documented leak-check records. Our combined service and certificate visit covers both requirements at once.
Part L (Conservation of Fuel and Power) and Part F (Ventilation) set standards for system efficiency and air quality. Regular servicing helps maintain compliance.
All our engineers hold F-Gas Category 1 certification with £5M public liability insurance. We comply with Building Regulations, provide F-Gas certificates, and maintain complete legal compliance for every job.
Heatbox provides air conditioning servicing with specialist focus on South and South East London.
What to expect when we repair your AC
Clear access to indoor units and, where possible, the outdoor condenser. Have any previous service records available and note any issues you've noticed.
A single split service takes approximately 45-60 minutes. The engineer will explain what they're checking, feel free to ask questions along the way.
You receive full written documentation including a service record and refrigerant readings. Keep this safe for warranty claims and any future sale of the property.
Rinse or replace washable filters every few months during heavy use. Keep the outdoor unit clear of leaves and debris, and report unusual noises promptly.
Customers who booked an AC service also used:
Need a new system? We install Daikin and Mitsubishi Electric splits and multi-splits with warranties up to 7 years.
Unit not cooling properly or showing an error code? Our engineers diagnose and repair all major brands.
System down in a heatwave? We provide priority emergency repairs across South London.
Planned maintenance contracts for offices and retail units, including F-Gas compliance record-keeping.
Need a leak-check certificate for your commercial system? Combine with a service or book separately.
Annual boiler servicing keeps your heating running efficiently alongside your cooling system. From £90.
Over 15 years serving London with transparent pricing, specialist knowledge, and genuine emergency response. No corporate markup, just honest local service.
A service is general maintenance covering cleaning, performance and safety checks. An F-Gas compliance certificate specifically confirms refrigerant leak checks required by law for systems above a set refrigerant charge. We recommend both for commercial and landlord properties.
Yes. Alongside servicing, we install new single-split and multi-split systems from brands including Daikin and Mitsubishi Electric.
Don't wait for a breakdown in a heatwave to discover your AC needs attention. Book your annual service now and keep your system running efficiently all summer.
Serving Bexley, Greenwich, Lewisham, Bromley, Croydon & All South London · F-Gas Certified · Daikin & Mitsubishi Electric Approved · Fully Insured
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