Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: IS THIS UNIT 220V 50 HTZ?
Document: I M VERY HAPPY WITH THE  ELECTRIC FIREPLACE HEATER,THE BEST I COULD HAVE DON THIS WINTERTHE DELIVERY WHERE PROMPEDTHANKS A BUNCHSINCERELYLISETTE THRAN
If you hang it on the wall. It's a pain to take it down, and then attach it to the base. So i'ts really one or the other. As far as being a good heater it is. When i'ts in the teens it helps the furnace from coming on every 10 minutes! I've used it every day for a month now and my electric bill has went up 50.00. So if I would have turned up my furnace to stay that warm.
unfortunately some of the bad reviews was right. The appearance is very nice and look stylish but did not produce heat witch is  the reason we bough the fireplace for in the first place. Even in a small distance I could not get my room warm or neither feel warm, my living room witch is about 120 sf was could as could be, and after while starting to generate cold air. We had to return it.
there is more that i expect. nice product and very very fast deliver, i will recomend 100%, even better the price was fantastic
product works fine. pumps out hot air. has nice display. sometimes puts off a weird odor that smells like fish. Overall satisfied with product. Enjoy sounds of fireplace.
our mother is 93 and ALWAYS cold; her gas logs were too much for her to handle so we replaced them with this electric fireplace/heater. it is simple for her to operate and keeps her nice and toasty. the flames make her feel like it's a real fireplace and she enjoys looking at it. i'm actually sick of her thanking me for them (a couple of times everyday since Christmas). We did turn the crackling noise off; but it looks good and provides satisfactory heat.
i just bought this for the ambiance....as i live in the caribbean and dont need heat.....it worked beautiful and looks reali nice......the order reached way before time...i ordered it to have my place finished in time for divali(like xmas in trinidad) and i was able to meet the deadline...i love the product
i bought one two winters ago and really like it as a matter of fact i am going to buy a second one.when i had in front room i had the sound off but the flames were nice for the ambience.moved to the masterbedroom and we turn the sound and flames off and keep the remote on headboard to turn off when room is plenty warm.i have had several comments by friends and family that like it and have bought one for them selves
great heater if you want to keep it on all the time the draw back is if you set the temp the heating element will shut off at temp but the fan will keep running
didn't think so at first, but after a couple of days' use at lowest setting, woke up to very realistic flames, which had engulfed unit. I'm probably returning what's left of it.
Answer: no