I have owned quite a few heat pumps and this one is by far the worst. It's noisy and drafty and impossible to be in the same room when it's running, unless you want to be miserable. The fan surges and the louver vanes creak. Fujitsu's customer support is also very poor. Changed it for a Mitsubishi GE71 and can't believe the difference, and their WiFi is much better also.