... -Cooling Method:absorption -Capacity:30L -CE,RHOS,FCC approved Low -noise,long-lifetime absorption hotel fridge (CE approved) Main Features ... absorption new technology, cooling by ammonia, no compressor, no fan, no moving part, no vibration, noiseless, maintenance-free ... DisadvantagesSILENT, no moving partsdoes not disturb guest sleep. Noise, from compressor increases with age. Disturbs sleep and ...