• Service history log – every repair or maintenance visit, with date, technician name, and what was done.
• Upcoming scheduled maintenance – so they know when you’ll show up again (and can’t claim you never told them).
• Warranty coverage status – whether the repair was under warranty or paid.
• Parts replaced – itemized list with part numbers or descriptions.
• Service recommendations – notes from the technician, like “filter replacement in 6 months” or “monitor unit for noise.”
• Cost details – if you want to be transparent, list labor and parts costs (or at least total).
• Photos – before/after shots of repair or maintenance can be surprisingly reassuring.
• Technician notes for customer – a simple plain-language summary, not just internal jargon.
• Next steps – book another visit, request a quote, or download the report.