For the first conversation
Provide the type, number of units and the problem you have noticed. Mention when it occurs and any recent service or changes to the installation.
What we agree next
Access, unit location and safe working conditions affect the service. Installation or complex repair may need an assessment before a quote can be finalised.
The proposed tasks, materials, parts and cost are agreed before work. Additional findings are discussed before extending the scope.
Share the number of units, model information if available, property type and the task you need. For a fault, describe the symptom and when it occurs. Explain access to outdoor equipment and any building restrictions. Relevant photographs may help, but personal documents or unrelated property details are not needed for an initial service enquiry.