Cosco hand trucks are designed to be multipurpose for residential use. Any of our models with larger rear wheels can be used on stairs in two-wheel mode only. If your model is a 2-in-1, 3-in-1, or 4-in-1, it should only be used on stairs in the hand truck position, and never the cart or assist modes. Per the warning label, "In assist and cart mode, all wheels must contact the ground at all times." Lifting just one end of a heavily loaded cart in 4-wheel mode puts a significant amount of stress on the frame and can damage the unit.
A hand truck can make the most of moving day, but general safety measures should always be observed. Before moving a washing machine or other heavy object to or from the basement, remember the following:
- Ensure that stairs are free and clear of any trip hazards.
- Wear appropriate clothing, including protective shoes and gloves.
- Securely strap the load to the hand truck.
- Take it slowly and maintain control over the cart and load at all times.
- Keep the hand truck down gravity of the person controlling it. If you are moving a load downstairs, the hand truck goes before the driver, and going upstairs, the driver goes before the hand truck.
- For bulky or heavier loads, enlist the assistance of a second person.
Standard Cosco Hand Trucks generally have a wheel with a 10-inch diameter connected to an axle, and this larger wheel size enables the hand truck to traverse most staircases. Stair heights can vary somewhat but are usually between 7 and 10 inches. The general rule is that the sum of the rise and run (height and width) of a stair is equal to 18 inches. In other words, if a rise is 7", the run would be 11".
The larger wheels of a Cosco Shifter have a 5-inch diameter. Due to their smaller wheel size, Cosco Shifters should not be used on stairs, regardless of mode.
Cosco hand trucks are designed to be multipurpose and generally rated for residential use. If you require a hand truck specific to stairs and for commercial purposes, it would be more suitable to consider a product specific to this purpose. We do not manufacture stair climber hand trucks, nor do we recommend utilizing third-party stair climber conversion kits with our products; doing so would void the warranty.