Are the sounds my treadmill makes normal?
All treadmills make a certain type of thumping noise due to the belt riding over the rollers, especially new treadmills. This noise will diminish over time, although it may not totally go away. Over time, the belt will stretch, causing the belt to ride smoother over the rollers.
Why is the Treadmill I purchased louder than the one at the store?
All fitness products seem quieter in a large store showroom because there is generally more background noise than in your home. Also, there will be less reverberation on a carpeted concrete floor than on a wood overlay floor. Sometimes a heavy rubber mat will help reduce reverberation through the floor. If a fitness product is placed close to a wall, there will be more reflected noise.
When should I be worried about noise?
As long as the sounds your treadmill makes are no louder than a normal conversational tone of voice, it is considered normal noise.