Most helpful critical review
39 of 43 people found the following review helpful
Did not work for fresh roasted coffee
on February 26, 2014
I purchased two of these in hopes of using them to store freshly roasted coffee. I roast my own coffee beans at home every week and was searching for the ideal place to store them. Prior to this purchase, I had been using a Friis Coffee Vault and wanted to try these because they were 1) smaller and 2) did not required valve replacement. Unfortunately, I found that my coffee beans went stale within a day or two when using the Coffeevacs. I used them for several weeks and eventually gave up and went back to the Coffee Vault, which I feel works much better at maintaining the freshness of freshly roasted coffee. I am not sure if the problem was that the coffee reacted with the plastic or if a lack of seal caused the problem. My theory is that these cannot keep fresh roast coffee from going stale due to 1) Lack of valve for C02 to escape and 2) Lack of airtight seal.
I would have given the product 3-stars, but I give it 2-stars due to false advertising on the part of Tightvac. I know that there has been some arguments in the reviews about the definition of "vacuum" and "seal." Here is my take on some of the information I received from the Tightvac website before I purchased these:
"Acts in exactly the same way as a one way degassing valve" - Not true. The valve in this system is two way and opens only when the button on the side is pressed. This may be why fresh roasted coffee goes stale in these - no true way to degass except manually.
"They create a vacuum seal every time you open and close the container" - Not true. There are no seals/gaskets in this system, just hard plastic on hard plastic. There is only a vacuum in the sense that if you try to pull the lid off without opening the valve, you will create a slight vacuum and the lid will pull back down.
"CoffeeVacs are...Air Tight" - Again, no seals in this system.
To summarize, these containers are not good for storing freshly roasted coffee beans. They would probably be fine for storing store bought (i.e. stale) coffee. Otherwise, I would recommend the Friis Coffee Vault or just a plain mason jar with lid.