HVAC Maintenance Services in London
Planned servicing for air conditioning, heating, ventilation, HIUs and controls on one contract, with a photographed report after every visit and an emergency line when something fails. For managing agents, facilities managers and landlords across Central London and Greater London.
Mainteniq provides planned HVAC maintenance contracts for landlords, managing agents, BTR developments, offices and commercial sites across Greater London, all 32 boroughs, from our Westminster SW1 base.
- Air conditioning, heating, FCUs, HIUs, MVHR and VRV/VRF are covered on one annual schedule with a photographed report after every visit, logged in Maintivo, a single point of contact, and a same-day emergency response with an emergency line for contract clients. REFCOM F-Gas certified (REF1024168), NICEIC certified, SafeContractor approved.
Air conditioning and heating maintenance covers the planned servicing of all mechanical systems controlling temperature, ventilation, and air quality in a building.
- In London properties this typically means fan coil units (FCU), heat interface units (HIU), central interface units (CIU), mechanical ventilation with heat recovery (MVHR), boilers, and split or multi-split air conditioning.
- Annual servicing is best practice for residential systems; commercial AC above 12kW requires an energy inspection every five years under the Energy Performance of Buildings Regulations.
- F-Gas legislation requires annual leak checks on refrigerant-based systems. Mainteniq provides planned maintenance contracts covering all of these, for landlords, property managers, and facilities teams across Greater London.
The HVAC Problems London Buildings Bring Us, and What We Do About Them
Most managing agents and facilities teams call after the third breakdown of the year. These are the six situations behind most of those calls, and how a planned contract removes each one.
The AC fails in the first hot week and the heating fails in the first cold one
Systems that sat idle for months are switched on at full load. Seized valves, blocked filters and low refrigerant all show up at once, and every contractor in London is busy that day.
How we solve it: A planned visit before each season catches the faults while they are still small. Contract clients get priority call-outs and an emergency line for the few failures that still happen.
Reactive call-outs are eating the budget and nobody can predict next month
Every breakdown is an emergency rate, an unplanned invoice and a tenant complaint. The finance director asks why maintenance costs vary by thousands from month to month.
How we solve it: One contract, one annual schedule, one fixed figure. Repairs are quoted separately and in advance, so the only surprises are the ones we prevent.
The compliance file is incomplete and the audit is next month
F-Gas leak checks, TM44 inspections, gas safety and the maintenance records that go with them are held by three different contractors, or by none.
How we solve it: Every visit produces a photographed report and the certificates that apply, filed in one place. Renewal dates are tracked for you, so TM44 and F-Gas never lapse.
Three contractors, three invoices, and no one who owns the whole system
The AC company blames the BMS company, the heating engineer blames the ventilation. Meanwhile the building runs hot on one floor and cold on another.
How we solve it: We look after heating, cooling, ventilation, HIUs and controls as one system, with one point of contact. When something interacts badly, we fix the interaction, not just the part.
The previous contractor never turned up, or turned up and left no record
Half the fan coil units were serviced, nobody knows which half, and the last report was a text message with a photo.
How we solve it: Every asset on site is tagged and tracked. You can see which units are done, which are outstanding and what each one needs, in a report written for a manager, not just an engineer.
Energy bills are climbing and the EPC rating is at risk
Dirty coils, blocked filters and drifted controls make plant work harder for the same result. On a commercial lease that is money and, under MEES, a rating problem.
How we solve it: Coil and filter cleaning, refrigerant charge checks and controls calibration on a fixed cycle keep systems near their design efficiency. Where there is a BMS we tune it too.
One HVAC Maintenance Contract for the Whole Building
A Mainteniq HVAC maintenance contract covers every heating, cooling and ventilation asset on site: split and VRF air conditioning, boilers and heating plant, fan coil units, heat interface units, MVHR ventilation and the BMS or controls that tie them together.
The statutory work sits inside the same programme: F-Gas leak checks at the interval each system requires and TM44 inspections where cooling exceeds 12kW.
Pricing is a fixed annual figure itemised by asset, with block and portfolio rates. Repairs and parts are quoted separately and approved before work starts. The contract can stand alone or sit inside a wider planned maintenance contract covering plumbing, electrical and compliance certificates too.
Before and after, so you can see the coil, the filter and the fault without going to site.
Temperatures, pressures, refrigerant charge and control set points, recorded each visit so drift is visible.
What was cleaned, calibrated or replaced, plus anything that needs budgeting, in priority order.
F-Gas leak check records, gas safety and TM44 where they apply, with the next due date tracked.
How a contract starts
- 1Site survey
We walk the plant with you, list every asset and note what is under warranty, what is failing and what has never been serviced.
- 2Fixed annual quote
One figure for the planned programme, itemised by asset. Repairs quoted separately and approved before work starts.
- 3Scheduled visits
Pre-season checks and annual services booked around your building, with residents or tenants notified the way you prefer.
- 4Report after every visit
Photographed, logged in Maintivo, in your inbox the same day. Certificates filed, renewal dates tracked.
- 5Emergency line when it matters
Contract clients get priority emergency response, with a same-day target across Central London and the boroughs around it.
Across all 32 London boroughs
The HVAC maintenance contractor that photographs every job
Every visit ends with a photographed report in your inbox: what was checked, what was found, what was fixed and what needs budgeting. No chasing for paperwork at audit time.
What a planned contract includesSpecialist HVAC Services
Each system has its own service requirements. Select a service to learn more.
FCU Maintenance
Fan coil unit servicing for offices, hotels, and apartment blocks
HIU Service
Heat interface unit maintenance for district heating networks
CIU Service
Central interface unit servicing for residential block heating systems
MVHR Maintenance
Mechanical ventilation with heat recovery servicing
Boiler Services
Boiler servicing and repair by Gas Safe registered engineers
Air Conditioning
AC installation, servicing, and F-Gas compliant repairs
F-Gas Compliance
Refrigerant leak checks and F-Gas records for AC and refrigeration systems
Emergency Repair
Emergency HVAC and heating repair with a same-day response across London
Heat Pump Servicing
Servicing, repair and controls optimisation for air source and ground source heat pumps
Building Management (BMS)
BMS controls, monitoring and optimisation for commercial buildings and estates
Who We Help
One contractor who owns heating, cooling, ventilation and controls, keeps the compliance file current and answers the phone at 2am. Managing agents and facilities teams in Central London are the core of our work; landlords with a single system get the same report and the same line.
Signs Your HVAC Needs Service
Recognise any of these? They're usually easy to fix with professional maintenance.
AC not cooling properly?
Warm air, uneven temperatures, or system running constantly without results
Coil cleaning, refrigerant check, and system optimisation
Unusual noises from vents?
Rattling, buzzing, or grinding sounds from ducts or units
Component inspection, bearing lubrication, and fan belt adjustment
Higher energy bills?
Electricity costs rising without increased usage
Filter replacement, efficiency testing, and control calibration
System keeps breaking down?
Frequent repairs, error codes, or emergency callouts
Preventive maintenance plan to catch issues before they fail
Response Target
Emergency call-outs, contract clients
Systems Maintained
Commercial & residential
London Boroughs
Covered from Westminster
Years Experience
F-Gas certified
Our Service Process
Comprehensive HVAC service typically takes 2 hours
Assessment
Full system inspection and diagnostics
Service
Filter replacement, coil cleaning, testing
Calibration
Controls optimisation and efficiency check
Certification
Compliance documentation and report
Commercial Refrigeration
F-Gas certified service for all commercial cooling systems. We keep your refrigeration compliant and your produce safe.
Without Maintenance:
- Food spoilage and waste
- Health & Safety violations
- Higher energy bills
- Failed health inspections
With Professional Service:
- Consistent safe temperatures
- Lower energy costs
- Extended equipment life
- Full compliance documentation
UK Compliance
TM44 Inspection
Required: AC systems >12kW
Frequency: Every 5 years
Civil penalty for non-compliance
F-Gas Regulations
Required: All AC & refrigeration
Checks: Annual leak testing
We're F-Gas Category 1 certified
Landlord Obligations
Residential: Functional heating required
Commercial: FRI lease maintenance
Building Safety Act 2022
Why Choose Professional Service
Our Certifications
Red Flags to Avoid
- No F-Gas certification numbers
- Suspiciously low prices
- No written warranty
- No proof of insurance
Stop Paying Emergency Rates for Problems a Service Would Have Caught
Send us the building and the asset list, or let us survey it. You get a fixed annual quote, a schedule, and a photographed report after every visit.
Emergency Response. Greater London. F-Gas Certified (REF1024168)