I recently purchased a ResMed N30 mask for $169 and found the climate line on my machine was to big in diameter to fit the mask elbow. I emailed easybreathe twice, and got no response. I talked to a customer service rep on line to see if they had a connector to go between the climate line and the mask. I was told to send a picture, which I did. This was the first non response. I then talked to a rep on the phone and explained again the issue and was told again to send a picture of the connection, which I did and no response. Very poor service! I did check with another company and found a part that will work, and the same mask for $30 less. I did not purchase the return insurance for $25 and do not want $169 store credit from this company so I ate the $169. The price for not shopping around.