Methods Comparison
  Steam or Hot Water Extraction
Carpet Cleaning
Green Guys Carpet Care -  VonSchrader Air Cell Extraction™ Carpet Cleaning Rotary Brush Carpet Cleaning
Basic Method for
Cleaning
High pressure jets spray a solution of hot water and detergent into the carpet to loosen the soil. Some of the cleaning solution and soil are then extracted by means of a built-in suction method. Thousands of tiny Air Cells (masses of air surrounded by a microscopically thin sandwich of detergent), then water and more detergent are gently scrubbed into the carpet. These Air-Cells create a unique cleaning environment, containing 90% air and only 10% detergent and water, which overcome gravity to hold soil in suspension for immediate extraction. A detergent is applied into the carpet pile with rotary brush machine. Extraction must be conducted with a separate wet vacuum pick-up system.
Drying Time 24+ hours 1 hour 4-6 hour
Deep Cleaning? Yes Yes No
Provides a surface cleaning only. Dirt deep in the carpet remains.
Environmentally
safe?
• Requires many gallons of  water to clean a carpet.
• Most require trucks to transport equipment and idle during cleaning.
• Air Cell detergents are biodegradable.
• Machines are easily transported in a
small hybrid car.
• Very little water is used.
• Green Seal Certified
• Most require trucks to transport equipment.
Non-toxic? Varies.
Most cleaning solutions are non-toxic, but not all. Check with your specific provider.
Yes Varies.
Most cleaning solutions are non-toxic, but not all. Check with your specific provider.
Safe for all types
of carpet?

• No,

• Unless you're working with a very experienced company, it is easy for carpets to become overly
saturated resulting in
discoloration, shrinkage, splitting seams, de-lamination, and mildew growth.

• Hot water can remove "stain resist" properties from carpet.

• Yes,
including "stain resistant" nylon, wool, and other synthetic fibers.

• No,

• Do not use on rugs, or old and brittle carpet.

• Can cause severe distortions on some types of carpet, particularly those of a twisted, cut pile construction, such as Saxony and cut/loop types.

• Unless you're working with a very experienced company, it is easy for
carpets to become overly saturated resulting in discoloration, shrinkage,
splitting seams, de-lamination, and mildew growth.