Carpet cleaning machines that contain a belt may require repair maintenance, according to ConsumerReports.org. Carpet cleaning appliances that feature rotating scrub brushes provide deeper cleaning than models that have a stationary brush system.
Carpet cleaning machines that have large cleaning solution and dirty water collection tanks reduce the number of times you need to empty and refill tanks in your sink. ConsumerReports.org recommends carpet cleaning machines that contain a separate cleaning solution dispenser, to ensure your machine uses the proper amount of cleaning solution.
Carpet cleaning machines that come with hose extensions allow you to clean carpeted staircases and behind furniture. Carpet cleaning machines with bare floor attachments allow you to clean non-carpeted areas of your home.