I agree with those that suggest a hand cart that's made to climb stairs. As suggested one or two additional straps are necessary to keep the item being transported in place. My hand cart has an additional extension that folds down increases the size of the platform from 18" wide x 6" long to 22" long. I've used this to move heavy amps and very large, heavy speakers up and down long flights of steps. No problem. It's surprising how you will use it for moving many other items at home etc.
