Dewar Service Department

Dewar has a dedicated service team to service any Dewar manufactured products.

When sending back your Dewar product for repair/ upgrade/annual test certification, please print and fill in the “customer authorisation form” (located in the documents section below) and send back with your device. The service team will contact you with a quote before going ahead with repairs. No product will be repaired unless the quote has been accepted.

Dewar endeavours to return re-calibrated NST’s within 3 days after receiving into store. However, if there is a large backlog of NST’s to be re-calibrated or repaired this may take up to 1 week or longer. Especially if we receive large batches (more than 10) of NST’s back. If you require your NST™ back urgently, please contact the service department.

Dewar Electronics is the only company that can perform accurate upgrades and annual checks on the Dewar NST™ as a specific software is needed to achieve this. Dewar has not released this software to any other company to perform upgrades and checks. 

Please visit the NST™ page for more information on the unit and accessories.