The Royal RY7940 carpet hot extractor has two suction nozzles instead of one, like other extractors. That means dirty water never has a chance to soak into your carpet so you get a drier, cleaner carpet. It also features:

• Two revolving brushes that rotate in opposite directions so your carpet gets cleaned from all sides.
• A separate extraction chemical dispenser that automatically measures the correct amount of extraction chemical, so there's no more guessing about the right amount to use.
• An extraction chemical  dispenser you can turn off to rinse the carpet you've just cleaned. 
  
• Clean and dirty water tanks that are larger to hold more and are easy to fill and empty.