Hoover FH50150 Carpet Cleaner has an automatic detergent mixing feature. It implies that there will always be a proper balance of water & detergent. The rinse technology facilitates the press of a button and rinse carpets via water. SteamVac by Hoover uses the surge clean. It enables you to push the surge clean, and excess detergent will be added. Unlike the Hoover FH50150, it is also devised for tough floor cleaning.