... -Cooling Method:absorption -Capacity:30L -CE,RHOS,FCC approved Low -noise,long-lifetime absorption hotel fridge (CE approved) Main Features ... no moving part, no vibration, noiseless, maintenance-free operation. And we have 5 years' warranty for it ! Absorption Cooling ... partsdoes not disturb guest sleep. Noise, from compressor increases with age. Disturbs sleep and causes guest complaints.NO VIBRATION. ...