How to Compare Air-Conditioning Installation Quotes

Comparing quotations becomes easier when each one answers the same request. List the rooms, their uses and whether cooling, heating or both matters most. Include known access restrictions and the appearance you want to achieve. If you are still exploring options, say which decisions remain open rather than allowing each installer to assume a different scope.

Provide a postcode and useful photographs, then agree what needs a site survey before the price is confirmed. A remote estimate can begin the conversation, but hidden routes, electrical work and access can change the final proposal. Understand whether a document is an estimate, a fixed scope quotation or a price with stated allowances.

Look for indoor and outdoor model references, the rooms covered and the proposed controls. Ask how the equipment was selected for the room conditions. A capacity label by itself does not explain the expected performance, and two systems with similar names may have different features or installation requirements.

If winter heating is a priority, make sure the proposal addresses that explicitly. Ask what other heating is assumed to remain. For several rooms, request an explanation of simultaneous operation and any limits of a shared outdoor unit. Keep a note of the assumptions so a lower price is not mistaken for equivalent room coverage.

Request the proposed positions and routes for pipework, drainage and cables. Ask whether pipes will be concealed or enclosed in visible trunking, and where drains will terminate. If a pump is included, understand where it sits, how it can be accessed and what maintenance it introduces.

Clarify the electrical scope and who is responsible for checking the supply. Also identify wall penetrations, brackets or bases, access equipment and any required permissions or third-party approvals. Ask the relevant authority or property manager about the approvals for your circumstances; a contractor's brief verbal reassurance should not replace confirmation where it is needed.

Read the exclusions as closely as the equipment list. Making good, redecoration, lifting access, removing old equipment and upgrading a supply can materially affect the work. Ask whether taxes and any provisional allowances are shown clearly. A shorter quotation is not necessarily better value if you cannot tell what has been included.

Confirm the payment stages, expected programme and how changes would be agreed. If a route proves unsuitable on the day, there should be a clear way to discuss the alternative and its cost before proceeding. Keep amendments in writing so the final installation can be checked against an agreed scope.

Ask what commissioning checks and documentation will be provided, and make time for a controls demonstration. The handover should help the actual users operate the equipment, find the manual and understand routine care. If an app is part of the proposal, ask how accounts and access are handed over.

Compare warranty terms, service expectations and the process for reporting a problem. Distinguish the manufacturer's equipment cover from any workmanship terms. Avoid assuming that a long headline warranty covers every visit or expense. A clear aftercare arrangement can matter as much as a small difference in the initial price.

Put the two or three proposals beside each other and mark each item as included, excluded or unclear. Send a short list of unresolved questions before choosing. This is more useful than trying to negotiate a total while the underlying scopes remain different.

• Same rooms, heating and cooling requirements.
• Exact models, controls and agreed positions.
• Pipes, drainage, electrics, access and making good.
• Total price, exclusions, payment stages and change procedure.
• Commissioning, handover, warranty and aftercare.

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