A-dec · Dental Equipment · $8,000 – $18,000
A clean unit with under 5,000 chair hours and full service records hits $16k–$18k; units with 8,000+ hours, missing LED bulbs, or a 2+ year service gap drop to $8k–$11k. That $7k spread is real - mostly labor, not just cosmetics.
Plug it in and run the chair through 10 full cycles - listen for grinding, binding, or hydraulic whine; test the foot pedal sensitivity because worn-out limit switches cost $600 to replace. Pull the delivery unit tray and look at the actual hose connections; if the fittings are corroded or lines are kinked, walk. Get the serial number, call A-dec support directly, and verify the last service date - if they hedge, it's a red flag.
Southern California and Texas have constant demand because Aspen Dental, Western Dental, and Sage Dental run high-volume chain clinics that swap equipment every 10 years. Irvine market specifically moves 3–5 used A-dec 500s per month because of dental school expansion in Orange County.
| Model | Brand | Used Price | Key Spec | Value Score |
|---|---|---|---|---|
| A-dec 500 ✓ | A-dec | $8,000–$18,000 | Dental chair, LED light, delivery unit... | ●●●●● |
| ProMax 3D Plus | Planmeca | $40,000–$85,000 | CBCT 3D imaging, cephalometric, 23x26cm FOV... | ●●●●○ |
| OP 3D Pro | KaVo | $35,000–$70,000 | CBCT 3D, 16x13cm FOV, low dose... | ●●●●○ |
| Orthophos SL 3D | Dentsply Sirona | $38,000–$75,000 | CBCT panoramic ceph, 11x10cm FOV... | ●●●●○ |
The 2018 has a brushless servo motor (quieter, fewer repairs) and a better LED driver circuit; the 2012 uses a standard DC motor that's noisier but still reliable. Both take the same parts. The motor upgrade is the only real difference, and it's not worth another $3k if the 2012 has clean service records.
Yes. If they're asking $15k, walk in with comps at $13k–$13.5k, point to chair hours over 6,000, and say you need $12,800 cash today. Works about 60% of the time. The 10% discount is standard for private sellers who've had it listed 45+ days.
Servo motor valve seals (hydraulic leaks), foot control potentiometer, and the LED ballast. None of these are catastrophic - under $2,200 total to replace. The one thing that tanks resale is a cracked casting on the chair base; if you see that, walk immediately.
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I can pull the full service history and replacement parts list in 48 hours, saving you 6–8 phone calls and eliminating post-purchase surprises. That due diligence typically surfaces $1,200–$2,800 in hidden repair needs before you commit.