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The refrigerator fan noise of our 2002 19' Bambi drove us nuts shortly after we bought it. We were fortunate enough to get a super-quiet Italian dual-fan unit which is very much like the two-fan setups in this thread. Our unit has its own two-level thermal switch and an interior control which we usually leave on automatic. The lower temperature level of the thermal switch runs the fans at lower speed and the upper level at full speed. The fans blow out through the access door louvers. Even at full speed, the fans are very quiet. The picture shows the fans, which simply replace the Airstream single fan without much modification other than a simple bracket. Also shown is the original thermal switch on the refrigerator. We kept it in the circuit in order to make sure the fans went on when the refrigerator said so.
Now the real point of this. With this simple setup, the fans run almost only at the low speed, indicating that two fans aligned with the cooling coil give very adequate cooling. The higher speed kicks in very seldom even in quite warm weather.
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