Is Thermos vacuum bottle dishwasher safe?
Not dishwasher safe
Thermos vacuum bottles are not dishwasher safe.
Quick facts
| Dishwasher safe? | No — Not dishwasher safe |
|---|---|
| Category | Containers |
| Source | Researched — confirmation in progress |
| Last checked | 2026-06-17 |
Why
The vacuum insulation relies on a sealed double-wall construction; dishwasher heat and moisture can damage the seal, leading to loss of insulation. Additionally, the exterior coating may peel or discolor in the dishwasher.
How do you wash Thermos vacuum bottle?
Hand wash with warm soapy water and a soft sponge. Rinse thoroughly and air dry with the cap off to prevent odors.
More containers
Last updated 2026-06-17. General guidance — always check your product’s care label. How we verify.