We purchased this unit for our daughter's NYC apartment which has very high ceilings.  Although her bedroom is small (holds a full size bed), it opens to a larger living area.  The unit was installed in her bedroom so that she has the option of leaving her door open to cool the living area during the day or closing her door at night so she can sleep.  Excess noise from this unit was not an issue.  We are very happy with this purchase.  Never heard of this company until we kept researching other purchasers' reviews and also air conditioning websites.  The price we paid for this amount of BTU power was less than or comparable to other better known companies. The single hose was easy to install with the materials provided.  We would recommend this to a friend.