Are All Fans Noisy?
Look for HVI rating for quiet fans
One of the deciding factors when purchasing a fan is the level of noise produced by the unit. Many individuals are unaware that there are a number of fan models which operate very quietly. When a fan produces a high level of noise it can interfere with daily activities and become irritating to the point where you may regret purchasing it. Not all fans are noisy, but it is the consumer’s responsibility to recognize which models are noise efficient and which one’s are not.
One of the primary factors that contribute to the noise level of a fan is turbulence. Turbulence is an unstable flow of air which can cause the fan to produce high levels of noise. Many manufacturing companies will tell you high noise levels are an indication of poor equipment, and that high noise levels can be avoided if you know the factors associated with quiet, low noise fans.
There are a number of factors to look for when choosing a quiet fan. For a noise-efficient fan, the fan blade tip speed should be less than 4,500 feet per minute (fpm). Fans with a diameter of 12, 24 and 36 inches should have fan blade rotational speeds of less than 1,440, 720, and 480. Ask a professional when purchasing your fan to ensure your fan meets these standards.
When purchasing a fan, look for models that state the fan is quiet, produces low levels of noise, or is noise efficient. These features specify the noise level and if the fan does not perform, you can take it back or exchange the product. It is also a good idea to check for the Home Ventilating Institute (HVI) rating. The Home Ventilating Institute is nonprofit organization that tests and rates fans for airflow and sound. If it is not rated then chances are good that the fan will be noisy and irritating. In this case, you might want to keep looking until you find a model which has an HVI rating.
The noise level of the fan you purchase will have a huge impact on your overall satisfaction with the cooling unit. Choose your fan model wisely in order to ensure you are pleased with your purchase and happy with your product.

