The Bissell ProHeat 9400M includes a built-in hot water heater, surround suction system and an on-board tool set that includes a stain tool, stair tool, turbo brush, crevice tool and carrying handle. It comes with a limited warranty and a trial size of Bissell cleaning solution for use with the machine. The unit also has a microban filtration system.
The Bissell ProHeat 89101 also includes a built-in hot water heater, carrying handle, on-board handle, limited warranty and trial size of Bissell cleaner. However, the unit also includes a full set of tools, including a pet stain eraser and tough stain tool, and has a flow indicator that spins when cleaning solution is applied.
The 89101 has 6 rows of cleaning brushes, while the 9400M has 12 rows of cleaning brushes. The models are also slightly different in size: The 89101 is 20 x 12 x 45.25 inches in size and weighs approximately 32 lbs. The 9400M is 19 x 13 x 44 inches in size and weighs about 35 lbs. Both units have a 12-amp motor and a 12-inch wide cleaning path.
As of June 2011, the Bissell ProHeat 9400M costs approximately $272, and the Bissell ProHeat 89101 costs $160.