When switching from rental to purchase I chose to buy a ResMed AirSense 10 Elite due to its data reporting capabilities and reportedly exceptionally quiet operation (my wife has very sensitive hearing).
After getting the unit home it was super quiet between breaths however every time I inhaled it created a very loud sucking noise at the air inlet (where the filter is located).I never experienced this noise with the F&P and was very surprised given that the AirSense is rated as being quieter than the F&P (27dBA vs 30dBA). My pressure is only 6.0.
I checked that the humidifier tray was properly seated, turned off Ramp, Pressure Relief and Smart Start and verified that my mask type is set to Full Face (I use a F&P Simplus Full Face) but it did not reduce the noise level. I took the unit right back and they pulled out another brand new AirSense 10 Elite and it made the exact same noise. We then tried a brand new ResMed S9 Elite and it also made the same loud sucking noise. We then tried a brand new F&P ICON+ Premo and it made almost no noise when inhaling with the exception of a slight whine. Even a strong, forceful inhalation would not produce any noise even remotely as loud as the noise from the ResMeds.
I was really set on the ResMed units due to their reputation but I am very confused by the amount of noise they were producing and there is no way my wife would be able to sleep through the noise from the ResMed. If there is some solution to the noise these units produce I would love to give them another chance. For now I am researching other units.