Two people can carry a folded, strapped treadmill down a straight staircase if there is no landing or turn to navigate, but it still carries real risk. One person must stay below the machine to bear most of the weight while the other controls the tilt from above, moving one step at a time with constant communication.
Yes. Removing all plates, bars, and attachments before moving a power rack down stairs is one of the most effective ways to prevent injury. Carry the stripped frame separately from the weights, and move plates down in small batches using a box or bucket rather than carrying them loose.
A stair-climbing hand truck paired with moving straps and furniture blankets is the safest combination for most home gym equipment. The straps redistribute weight to the shoulders instead of the arms and lower back, and the blankets protect both the equipment and the stairwell walls.
Most home treadmills weigh between 150 and 300 pounds, though commercial or heavy-duty models can weigh more. Always check the manufacturer's spec sheet rather than guessing, since underestimating weight is a common cause of dropped equipment on stairs.
If the equipment exceeds what two people can comfortably control, if the staircase has a tight turn or landing, or if it cannot be disassembled to reduce bulk, it is safer to hire professional movers who carry stair-rated equipment and rigging straps built for this exact situation.