The dryer brand with the least noise is typically Whirlpool. Whirlpool dryers are known for their quiet operation, which is a result of their advanced technology and design. According to a study by Consumer Reports, Whirlpool dryers consistently rank among the quietest on the market. The brand's Whisper Quiet series, in particular, is renowned for its low noise levels, making it an excellent choice for those who are sensitive to noise or live in close proximity to neighbors.

The reason Whirlpool dryers are so quiet lies in their innovative design features. These include:

1. Sound-Dampening Materials: Whirlpool dryers use sound-dampening materials to absorb and reduce noise. These materials are strategically placed around the drum and motor to minimize vibrations and noise.

2. Advanced Motor Technology: The brand employs advanced motor technology that operates more quietly than traditional motors. This technology ensures smoother operation and less noise.

3. Quiet Operation Modes: Whirlpool dryers offer quiet operation modes that further reduce noise levels. These modes are designed for delicate fabrics and can be activated to minimize sound.

Data from Consumer Reports' annual dryer reliability survey supports the claim that Whirlpool dryers are among the quietest on the market. The survey evaluates dryers based on noise levels, and Whirlpool models have consistently scored well in this category. Additionally, customer reviews on retail websites such as Amazon and Best Buy often praise Whirlpool dryers for their quiet performance.

In conclusion, Whirlpool dryers are the quietest on the market due to their advanced technology and design features. Their Whisper Quiet series, in particular, stands out for its low noise levels, making them an excellent choice for those seeking a quiet and efficient drying solution.