The Wagner 705 and 715 are power steamer for wallpaper removal. They use water only, so it’s chemical free. They have one gallon tank, can work up to 70 minutes. Both of them come with a 8″x11″ steam plate to help you remove large area wallpaper.
One of the difference between them is the hose. The 705 comes with a 11′ hose while the 715 comes with a 12′ cool touch hose.
According to Wagner customer service, they improved the hose connection, the 715 hose screws into the housing instead of onto the opening.
If you look closer, you can find that the 715 adds a yellow fill cap on top, this cap has built in pressure relief valve. The 705 does not have this.