Accordions combine a wind-driven reed instrument with a fairly complex mechanical action - condition checks span both sides of that.
Quick checklist
- Bellows: check for air leaks (see our separate article on how to test this properly) - a leaking bellows is one of the most common and most important issues to catch.
- Reeds and tuning: play every note across the full range on both treble and bass sides, listening for notes that sound weak, buzzy, or noticeably out of tune with their neighbors.
- Keys/buttons and register switches: every key or button should respond evenly, and register switches should audibly change the sound when engaged.
- Straps and case: worn shoulder straps and a damaged case are cheap to replace but worth factoring into the price; a cracked or warped wooden body is a more serious concern.
- Weight: accordions vary significantly in weight by size and construction - see our separate article on weight and ergonomics, especially relevant for children or smaller players.
Reed and bellows work generally requires a specialized accordion technician rather than a general instrument repair shop, so factor that into any repair estimate before buying an accordion with known issues.
