Instruct: Classify an Amazon review into positive or negative sentiment.
Query: A Good lower grade vaporizer

This is a good lower grade vaporizer for a good value price. Keep it clean and it will last you a good while and do the job for one room. This is a heat steam, so if you need a cool vaporizer, do not buy this one but specifically search for a cool one which will run you some more money.Again, for the price, this does the job and will last for a while. I had the model before this and it lasted four years using it every winter some of those winters quite a bit.Keep it clean and you can actually buy new carbon filters for it and it can last just about forever.