Vacuum sealing your coffee beans is an excellent way to store your beans but it’s also important to know that whole coffee beans release CO2 gas when they are packaged. This valve allows the fresh coffee to outgas without losing its vacuum and then the bag can be resealed.Click to see full answer. Keeping this in view, how long are vacuum sealed coffee beans good for?Up to three months, if kept in the sealed one-way foil bags. However, ideally roasted coffee should be consumed prior to the sixth week. It should be ground immediately before brewing.Subsequently, question is, how long will vacuum sealed? Frozen food that is vacuum sealed lasts an average of 2-3 years, while it will last 6-12 months, on average, stored in other ways. Most vacuum sealed foods will last in the refrigerator for 1-2 weeks, which is much longer than the typical 1-3 days food will last when stored conventionally in a refrigerator. Furthermore, what is the best way to store coffee beans? To preserve your beans’ fresh roasted flavor as long as possible, store them in an opaque, air-tight container at room temperature. Coffee beans can be beautiful, but avoid clear canisters which will allow light to compromise the taste of your coffee. Keep your beans in a dark and cool location.How long will coffee beans last in airtight container?If taste is your concern, your best bet is to store coffee in an airtight container somewhere cool, dry, and dark. Stored this way, ground coffee can be used for a few months past its expiration date, whole bean for up to nine months, and instant coffee for up to twenty years.