The word warranty needs an explanation. Ask which work or products are covered and how a possible defect is reported.
Allow for later maintenance
Keep operating instructions and maintenance agreements for the different systems together. Record where filters and inspection points must remain accessible.
Distinguish arrangements
Workmanship and product warranties can have different conditions. Identify the contact person and documents supplied at handover.
Discuss maintenance
Some conditions relate to normal use and care. Ask what is expected and how maintenance can be recorded.
Make reporting practical
Photographs, location and a description of when the issue appears help assessment. The next step depends on the actual situation and agreements.
How to review the result
Request an explanation of controls and comfort-plan assumptions. Check openings and accessible components; behaviour across seasons may require follow-up.
Decide this before construction
Discuss glazing, shading and ventilation before finalising facade or roof openings. Coordinate required service routes before closing internal finishes.
Questions for your own property
- Which arrangement applies to each part?
- Who handles a report?
- Are conditions and care instructions written down?
Illustrative design situations, not evidence of completed work. Assess decisions against the actual property.