Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Does this model come with the drain valve, or do I need to buy one separately? (for the drain on the back of the machine)
Document: For now, I am going back to renting from my water supplier.
Leaks all over. I attempted to fix but it is not obvious how it leaks or can be solved. Less than one year of service from this.
if you are considering this item, please be careful to know that the water bottle does NOT fit under in the storage compartment. the water bottle needs to be LIFTED and turned upside down to load it. i cannot return the item now because they want a 30% re-stock fee and i am responsible for all charges with mailing it back. unacceptable! now I have two of these items that i do not want.
I searched for months looking for a water cooler that I liked that was in a decent price range. I did a lot of research and decided on this one. The temperatures are good. I was worried about how loud it would be considering it was going to be set up in the living room, however, it is not too loud. The sound is not distracting at all. It looks great and works great.
Good machine. My only problem is that for the first 5 gallons it tasted like plastic and it does not get the water hot enough for instant coffee. But fine now.
I am not a fan of this product, it outgasses toxic chemicals into the water. In the instructions it says to drain 4 cups of water every time you put a new bottle on. Is this to keep the product &#34;safe&#34;? It should be 4 cups before every single cup that you pour for your self. I followed the instructions for cleaning and draining when I got it with no success. It is like sucking water through a garden hose without running it first.
We love this machine, and would have given a 5 star, yet it continued to leak water until we removed the insert where the water fills that is suppose to be in there for the water bottle. When we removed it, though, it no longer leaked water. We use the 5 gallon Culligan bottles. The hot water gets EXTREMELY HOT, but the cold water is not ice cold. We have HORRIBLE tap water where we live, so it serves the purpose.
Great product I am really enjoying my cooler.
We have it set up at the office and everybody loves it. Good flow, quite, hot and cold both work great. I recommend.
doesn't work right the water has a plastic smell and never goes away I have to returned and I am still waiting for my money...
Answer: It has a drain hole in the back. I just put a empty 1.5 liter bottle under it and unscrew it. I haven't had any problems that way.