Set out the maintenance requirement
Your enquiry may concern scheduled servicing, overdue maintenance or equipment with an incomplete service history. Identify the system type and make or model where known, together with the last service date and any manufacturer information you hold.
Be clear about what you want included. Filters, fans, controls, accessible ductwork and heat-recovery equipment may form different parts of the requested scope. Mention access to ceiling spaces or equipment locations where this is already known.
The maintenance window matters too. Explain whether rooms will be occupied, when access is available and whether other property work is planned. Existing service or warranty arrangements should be mentioned if relevant.
When a fault is part of the enquiry
Describe the change you’ve observed, such as an unusual noise, an existing warning message or an apparent loss of extraction. Include when it began, which areas are affected and whether the equipment is currently in use.
These observations help describe the problem without assuming its cause. Don’t dismantle equipment, alter controls or restart a system to reproduce a fault for the message.
If replacement or wider alterations are also being considered, identify them as a separate project requirement. This keeps the immediate maintenance concern distinct from possible future work.
Send your maintenance enquiry with the London postcode, available equipment details and preferred work window. Unknown information can be marked as unknown.