The A/C in my Thor Class C which is a former rental RV is really loud. It has no fan speed control which seems odd to me. It is either running full blast or it's off. Once it gets cooled off inside it would be great if I could turn down the fan speed to medium or low. Is this normal or do most RV A/Cs have a fan speed control. Would it be possible to add a fan control to this type of A/C?
As far as noise... I reduced the noise on mine by applying tape that is used for ventilation. When I removed the cover I noticed several parts that left small gaps in the ducts. I sealed up all the gaps with the only intentions of improving air flow and surprising also reduced the noise.