Air Conditioning Installation Guide

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02/07/25, 14:04

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Conduct free or low-cost site survey to size the system and check electrics.
Agree indoor-unit positions, pipe runs, drain routes and outdoor-unit bracket or pad.
Deliver equipment, protect furnishings and drill 65–80 mm core hole(s).
Mount indoor cassette or wall unit; fit isolation switch and inter-connect cables.
Install outdoor condenser, flare/insulate pipes, vacuum, charge and pressure-test.
Commission, demonstrate controls, register warranty and log the F-Gas record.

Charge type	Low £	High £	Notes
Call-out / minimum	60	180	Survey/first 30 min; Freeztech call-out £60; weekday call-out often £130–£180 Freeztech Checkatrade
Labour per hour	30	60	AC engineer £30–£60 hr Checkatrade
Materials	1,200	2,700	Typical split-unit kit & sundries per room micro-climate.co.uk
Disposal	20	80	Packaging, masonry spoil, old unit removal
Extras (electrics, scaffolding, condensate pump)	150	700	Upgraded spur £150–£350; access hire up to £1,000 micro-climate.co.uk
TOTAL (most jobs come in here)	1,800	3,800	Single wall-mounted split, ground-floor install Homebuilding Checkatrade

Typical: 4 – 8 hours (one split), so usually finished in a single day. micro-climate.co .uk Checkatrade
May extend if: condenser on roof/balcony, difficult pipe runs through lofts, listed-building fixings, or multiple indoor heads fitted the same day.

Are you F-Gas registered and will my logbook be updated?
Does the quote include electrics, condensate pump and VAT?
What noise levels (dB) and efficiency rating (A+++) will the chosen model achieve?
Will I need planning permission or freeholder consent for the outdoor unit?
How long is the parts-and-labour warranty, and who honours it?
What extra cost applies if you hit unexpected steel, stone or require scaffolding?
Do you offer an annual service package and what does it cost?

Reserve parking near both indoor and outdoor work areas for the installer’s van.
Clear furniture and confirm a safe power-off for drilling through walls.
Check mains board capacity and arrange a dedicated fused spur if needed.
Obtain landlord or council approval where properties are leasehold, listed or in conservation areas.
Confirm trunking colour/route in writing to avoid aesthetic disputes.
Warn neighbours of possible one-day noise from drilling and vacuum pumps.

All figures are typical 2025 UK ranges, inclusive of 20 % VAT; always seek a fixed written quotation for your exact property and system size.