Instrument
Exchange

Field instruments, checked by specialists

Quality used test equipment you can put back to work.Guaranteed.

Buy carefully inspected HVAC TAB, IAQ and HERS testing instruments, or turn idle equipment into working capital.

Shop our eBay store Sell or trade equipment

Secure checkout, shipping details and buyer protection are provided by eBay.

Shortridge flow hood and Retrotec blower door on the inspection bench at Instrument Exchange
Specialist equipment focus
Condition stated clearly
Secure checkout on eBay
100% Return Guarantee

Every instrument graded. Every instrument guaranteed.

Graded 1 through 4. Tested. Model and serial number on the packing list. 100% Return Guarantee.

  • 1Grade 1: New, unopened, calibrated.
  • 2Grade 2: New, opened, calibrated.
  • 3Grade 3: Used, calibrated.
  • 4Grade 4: Used.
See how we grade and how returns work

Current focus

Professional instruments for the work you do.

Browse all live listings

Indoor air quality

IAQ monitors, VOC and formaldehyde meters, particle counters and air sampling pumps.

Explore IAQ equipment

Grades and guarantee

Know what arrives at your door.

Inspected and function tested

Each listing identifies the equipment included and describes its tested operating condition.

No vague promises

Cosmetic wear and known limitations are disclosed. Every listing shows its grade and, for Grades 2 and 3, its calibration date. Every instrument is covered by our 100% Return Guarantee for 30 days. Returns and guarantee

Sell or trade

Put surplus equipment back in the field.

Tell us what you have and send clear photos. We can consider a purchase or a trade based on the equipment and current needs.

Request a valuation
  1. 01Send equipment details and photos
  2. 02Discuss a purchase or trade
  3. 03Agree on the terms
  4. 04Pack and ship equipment