Knowledge centre
Commercial HVAC guides
Practical, independent-minded guidance for facilities managers, property managers and building owners in London. No sales padding: causes, checks, compliance points and next steps.
16 guides
AHU Maintenance: Common Faults and Inspection Considerations
Air handling unit faults section by section, what planned AHU maintenance should cover, and the hygiene, frost and controls issues facilities teams should watch.
Updated 6 Nov 2026Read guideChoosing a Commercial HVAC Contractor: Questions Facilities Managers Should Ask
Questions to ask before appointing a commercial HVAC contractor in London: F-gas certification, insurance, safety documents, reporting and reactive cover.
Updated 6 Nov 2026Read guideCommercial Chiller Maintenance: What Building Managers Should Monitor
The chiller readings, alarms and trends building managers should watch, what planned chiller maintenance covers, and the F-gas and water treatment duties.
Updated 6 Nov 2026Read guideWhy Does a Commercial HVAC System Keep Tripping?
The electrical, mechanical, refrigerant and control causes of commercial HVAC units tripping or shutting down, and what facilities teams should do.
Updated 6 Nov 2026Read guideCommercial HVAC Maintenance Checklist for Facilities Managers
A practical commercial HVAC maintenance checklist for facilities managers: records, compliance checks and the equipment tasks your contractor should cover.
Updated 6 Nov 2026Read guideCommercial HVAC Not Cooling Properly? Common Causes and Next Steps
Why commercial air conditioning and HVAC stops cooling properly, the safe checks facilities teams can make, and when to call an engineer.
Updated 6 Nov 2026Read guideCommercial HVAC System Replacement: Key Factors Before Approving a Quote
What to check before approving a commercial HVAC replacement quote: condition evidence, scope, refrigerants, controls, phasing, commissioning and handover.
Updated 6 Nov 2026Read guideF-Gas Leak Checks for Commercial Air Conditioning: A Guide for Building Operators
How often commercial air conditioning and heat pumps need F-gas leak checks in Great Britain, how to work out CO2 equivalent, and what records operators must keep.
Updated 6 Nov 2026Read guideFan Coil Unit Problems: Signs That Professional Servicing Is Needed
Common fan coil unit problems in commercial buildings, including leaks, noise, poor heating or cooling and controller faults, and what each one usually means.
Updated 6 Nov 2026Read guideHow Often Should Commercial HVAC Systems Be Serviced in the UK?
Typical service frequencies for commercial HVAC in the UK, from filters to chillers, plus the F-gas, TM44 and legionella checks that set minimum intervals.
Updated 6 Nov 2026Read guideCommercial HVAC Energy Efficiency: Common Causes of Performance Loss
Why commercial HVAC uses more energy over time, from dirty filters and drifting sensors to poor schedules, and the practical fixes facilities teams can request.
Updated 6 Nov 2026Read guideWhy Are Some Office Rooms Too Hot While Others Are Too Cold?
Why temperatures vary between rooms and zones in commercial offices, from zoning and sensors to fan coil faults, and how to fix uneven temperatures.
Updated 6 Nov 2026Read guidePreparing Commercial HVAC Systems for the Winter Heating Season
A pre-winter checklist for commercial heating, heat pumps, AHUs and controls, covering frost protection, changeover and checks before the first cold snap.
Updated 6 Nov 2026Read guidePreventative vs Reactive HVAC Maintenance: Which Approach Works Best?
How preventative, reactive and condition-based HVAC maintenance compare for commercial buildings, and how to choose the right mix for each asset.
Updated 6 Nov 2026Read guideTM44 Air Conditioning Inspections: What Building Managers Need to Know
When a TM44 air conditioning inspection is required in England and Wales, who is responsible, what the report covers and how it differs from servicing.
Updated 6 Nov 2026Read guideSeven Warning Signs Your Commercial HVAC System Needs Professional Attention
Seven early warning signs of commercial HVAC problems, what each usually means, how urgent it is, and what facilities teams should record before calling an engineer.
Updated 6 Nov 2026Read guide
No guides match your search. Try a different term, or ask the team directly.