Air conditioning installation and commissioning

gpt 5 mini
01/10/25, 12:14
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Scope of Works
• Survey and measure internal and external locations for indoor and outdoor units
• install indoor evaporator, outdoor condenser, pipework and condensate drain
• run refrigerant pipework, evacuate, charge the system and perform leak and pressure tests
• connect to the consumer unit, install isolator and test electrical safety and earthing
• commission system, set controls and thermostats, record performance data and hand over user guidance
• remove and dispose of old equipment and refrigerant in line with F‑Gas regulations
Typical Cost
Charge Type | Low £ | High £ | Notes |
|---|---|---|---|
Call‑out / Minimum | £120 | £180 | First 30–60 min on site |
Labour per hour | £60 | £90 | installation and commissioning time |
Materials | £700 | £2,500 | indoor and outdoor unit costs vary by capacity |
Disposal | £40 | £150 | old unit removal and hazardous waste handling |
Extras (e.g. scaffolding) | £100 | £800 | scaffold, long pipe runs, electrical upgrades |
TOTAL (most jobs come in here) | £1,000 | £3,700 | typical range for a domestic split system to small multi‑split |
Time on Site
Most domestic single‑split installations take 4–8 hours on site including commissioning and paperwork; multi‑split or ducted systems typically take 1–3 days. Factors that extend time include difficult external access, long pipe runs, need for scaffold, electrical supply upgrades and removal of old refrigerant
Questions to Ask Your Tradie
• are you F‑Gas registered and can you supply commissioning paperwork and refrigerant records
• what warranty do the units and labour carry and who handles warranty call‑outs
• does the price include a new circuit or consumer unit work if needed
• where will the outdoor unit be sited and how will it be fixed to avoid vibration and neighbour complaints
• will you carry out a site survey first and provide a written quote showing inclusions and exclusions
• what additional permits or approvals might be needed for flats, conservation areas or listed buildings
How to Avoid Surprises
• clear access to installation locations and a safe parking space for the van
• confirm any landlord, management company or building control permissions before work starts
• ensure pets are secured and internal areas are accessible for equipment and ladders
• check whether a scaffold or cherry picker is required for working at height and who will arrange it
• ask the tradie to confirm they will use appropriate PPE and follow safe refrigerant handling procedures
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