If you are deciding between Ridgid 50313 Model 4000RV and Wd4070 4-gallon 5 peak horsepower portable wet dry vacuum cleaners, here are some differences between them you may want to know before making a buy decision.

• Wheels and Casters
  The Wd4070 has Large Rear Wheels & Casters provides smooth moving over carpeted floors, thresholds, and rough floors.
  The 50313 Model 4000RV does not have any wheels or casters.
• Included Tools
  The Wd4070 comes with a Car Nozzle, a Utility Nozzle, and two Extension Wands;
  the 50313 Model 4000RV includes a Car Nozzle and a Muffler/Diffuser.
  The Car Nozzle is a dry pickup nozzle for cleaning car interiors and most upholstery.
  The Utility Nozzle is a general purpose nozzle for most vacuuming jobs.
  The Extension Wands provides additional length for more reach.
  The Muffler/Diffuser attaches to the blowing port, which will disperse exhaust air stream while reducing noise.
• Onboard Tool Storage
  The Wd4070 has Accessory Storage Caddy for storing and keeping attachments organized and easy reach.
  The 50313 Model 4000RV only has an car nozzle compartment for storing the car nozzle.
• Max CFM
  The max cfm of Wd4070 is 110 whereas the max cfm of 50313 Model 4000RV is lower than 100.
• Color
  The Wd4070 is Black and Orange whereas the 50313 Model 4000RV is Black and Red.

Similarities between them:

• They have 5.0 peak horsepower motor, 120V, 9amps.
• 4-gallon Polypropylene tank.
• Corde and have a 20-foot power cable.
• Large Carry Handle for convenient portability.
• 1-7/8” Diameter Hose
• Can be converted to a blower when the hose is inserted into the exhaust port.
• No drain port for quick liquids empty.
• Cartridge filter for dry vacuum or small amounts of liquid.

Some Questions and Answers:

• Is a wet vac better than a regular vacuum?
  It depends. Commonly, a wet dry vacuum is for heavy duty use, it can dealt with wet or dry messes in your home, garage, jobsite, cars, or even outdoor messes. The regular vacuum is for lighter use in your house cleaning and vihcle, only of dry pick up, but commonly equipped with better filtration system.
• What is the difference between wet and dry vacuum cleaner and dry vacuum cleaner?
  The names say it, the main difference is that the wet dry vacuum cleaner can pick up wet or dry messes whereas the dry vacuum only handle dry messes.
• Is a higher HP shop vac better?
  Higher HP does not guarantee that.
• Does more HP mean more suction on shop vac?
  HP is a factor that affects suction power of a vacuum, however, higher HP does not mean the vacuum suction power is stronger than lower HP vacuum.
• What happens if you use a wet dry vac without a filter?
  For dry use, you need to use it with a filter, or the vacuum may get clogged or damage. For wet pick up, you may not need a filter.
• Can a shop vac replace a regular vacuum?
  If you want, it can. However, it is not recommended.
  Shop vac commonly designed to be used in garage, workshop, auto cleaning, regular vacuum is mainly for home cleaning.
  The size, mobility, filtration and some other features of a shop vac may not meet the requirements of a home vacuum.
• Can a shop vac suck up water?
  Yes, definitely.