Model WD1851

Features

  • 6.5 Peak HP Motor – Powerful suction picks up about 1 gallon of water per second
  • Scroll Noise Reduction® is a patented feature that provides quiet operation by precisely controlling the flow of air through the vac
  • Sturdy Cart, Push Handle, & Large Rear Wheels act together allowing the vac to travel easily up & down steps and across rough terrain
  • Quick Release Accessory Storage Bag keeps accessories close at hand but is quickly removable to make emptying debris from drum quick and easy
  • 2-Piece Drum Provides improved, more rugged construction to meet the higher demands found on the job site
  • 3-layer Fine Dust Filter captures fine dust particles such as dry wall dust
  • 7' Dual-Flex® Locking Hose resists collapsing and adds 180˚ flexibility at both hose ends. Hose locks onto vac for uninterrupted cleaning
  • Large Carry Handle allows easy lifting of vac into service vehicle
  • Long 20’ Cord wraps neatly around carry handle
  • Powerful exhaust airstream can be directed through the vac hose to blow debris from garages, decks, and sidewalks

Specifications

Drum Size 16 Gallons (US)
Cord Length 20’
U.L. Listed Yes
Replacement Filters VF3502, VF5000, VF6000, VF7000
Accessory Size 2-1/2"
Shipping Weight 32.8 lbs.
Net Weight 28.2 lbs.

Motor

Peak HP 6.5
Air Watts 306
Voltage 120
CFM 203
Amps 12.0

Rated 4.8 out of 5 by 162 reviewers.
Rated 5 out of 5 by A Most Excellent Shop Vac I have owned a 14 gallon Rigid Shop Vac for several years and can easily say it has always worked hard and is a superior machine. As good it is there is one annoying problem with the Shop Vac, it is bulky, heavy and a bit difficult to move around, or maybe it just seems to be like that because I'm getting older. It was difficult to carry when I would be moving it to the: Upstairs, basement or out to the garage. It was a little bit tough to handle and sometimes seemed like a wrestling match. So last week I bought a new: Rigid, 16 gallon, 6.5 HP motor, Wet/Dry Shop Vac. In addition to all of these great features it is a Cart type Vacuum cleaner with large rear wheels for much easier control. This Cart feature has already made my life easier. Whoever thought up the idea of making a cart type Shop vac. should be given a raise in pay, it's a super idea. With this new Rigid Shop Vac I can transport it easily by using it's built in handle. As simple as it may sound the handle makes life so much easier. I'm a Baby Boomer up in age now and I have a few health issues so being able to grab the handle to move it along is dynamite! The muffler feature is great too. April 30, 2016
Rated 5 out of 5 by --------- I am very happy with the new vacum after unpacking and putting it together i found that it followed me so much easier around the shop with the supervac hose . it was a joy to use and much quieter than the old one . April 21, 2016
Rated 5 out of 5 by I really love using it Love It is Multitasking never Knew you can do so much with a wet & dry Vac April 14, 2016
Rated 5 out of 5 by it works great we had one for 7 months something happened and it quit working took back to the store and they fixed me up. It was great April 11, 2016
Rated 4 out of 5 by good 4 stars Suction was good and cart accessory made positioning vacuum more easily done. Cons were hose stiffness and attachments lacking in securing to hose. April 10, 2016
Rated 5 out of 5 by this is a heavy duty vac This vacuum is a long lasting heavy duty tool I have two other ridgid vacuums at work that run for hours at a time 3 to 5 times a week in very abrasive dust from our soil type and picking up piles of heavy matirial they have been working at this pace for at least two years and the suction is as good as the day they were purchased the wheels leave a little to desired in ruff floor conditions and hose durability is not the greatest but ridgid sells a better longer replacement hose to solve that if you want a long lasting vacuum ridgid is the way to go April 2, 2016
Rated 5 out of 5 by Working Well We like the big wheels. It allows us to move it around easily. March 27, 2016
Rated 5 out of 5 by Excellent product plenty of suction I use this product with both the bag and HEPA filter at the same time. Only the fine dust gets through the bag and is easily cleaned off the filter. I have five rooms we are remodeling and have gone through 6 bags already and this shop vac is still going strong. It is still early (~1 month) but this product is a great buy for the performance you get in return. March 25, 2016
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3 Questions | 11 Answers

Product Q&A

 
 
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1 year, 7 months ago
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Salt Lake City, UT, USA
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Answer: 
203 cfm
1 year, 5 months ago
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New York, United States
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Answer: 
1/203
1 year, 4 months ago
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Madera, CA, USA
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Answer: 
CFM 203
1 year, 5 months ago
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Michigan, USA
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Answer: 
20 pounds, maybe more. CFM 160
1 year, 2 months ago
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Worthington Springs, FL, USA
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Answer: 
Thank you for your interest in RIDGID!

The water lift of WD1851 is 47 inches while the suction power is 199 CFM.

If you have any further questions or concerns, feel free to call us at 1-800-4-RIDGID (1-800-474-3443) or you may send your email to [email protected]

Regards,
RIDGID
1 year, 7 months ago
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Answer: 
200+ CFM and it will move 1 gallon of water a minute, this I have done myself
1 year, 4 months ago
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Hulett, WY 82720, USA
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3 answers

Pressure

If a airwatts are 0.117354 * (CFM) * (inches water), then do I calculate correctly that this model no. WD1851 will lift water 12.8 inches high?

306 watts * (1/0.117354) * (1/203 CFM) = 12.8 inches of water

I feel like that number is way too low - I'm sure your product lifts water more than 1 foot high! I may have the calculation wrong or the pressure may be specified another way. What do the units of "G/h" mean?

Besides, it seems like an odd coincidence that this is almost exactly the inches for model WD4070 when the WD4070 is rated 5.0 peak HP and the model on this page is rated 6.5 peak HP.

Thank you for the help.
2 years, 4 months ago
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Indiana, USA
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Answer: 
You are right it would lift water more like 10 ft.
1 year, 2 months ago
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Langton, ON N0E, Canada
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Answer: 
According to our Product Manager, You need to first think of CFM and Inches of water lift in inches as two different and inversely related measurements. To maximize CFM, you need a wide open path with as little resistance as possible to move as much air as possible. To maximize inches of lift (or better recognize or measure) that flow of air needs to be restricted, or blocked. So to assume that our machines generate 203 CFM and 49 inches of lift at the same time is a miss-conception. The calculation you completed was “at 306 air watts and 203 CFM, what are the inches of lift being produced”… and the answer is 12.8. Essentially, you’ve identified the inches of lift at the rated max CFM and Air Watts. For example, if you solved for CFM at max inches (say 49) you get a really small CFM number, somewhere below .2 CFM. This is because at max inches (the hose is blocked) and there is “no” air moving through the hose.

We hope this helps. Have a good week ahead!

Thank you
RIDGID
2 years, 4 months ago
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Answer: 
Thank you, RIDGID! That really helped me understand how the pressure and CFM are related, and the calculation result of 12.8 inches makes sense now. I didn't realize the airwatts equation was NOT referring to "sealed" inches of water. Now I see why using sealed inches for calculating airwatts wouldn't make any sense.

You mentioned 49 inches a couple times. Is that the sealed lift this vacuum is rated for? If not, would you please share the max water lift rating?

Thank you again.
2 years, 4 months ago
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Indiana, USA
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1 year ago
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Bakersfield, CA, USA
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Answer: 
I've got 16 Gallon Model # 1851 and it takes Vac Bag VF3502

I think they are usable on both models, but you'd still need to double check. Maybe Home Depots site or just call or email Rigid.
8 months ago
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Richford, VT, USA
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Answer: 
Thank you for your interest in RIDGID!

Please confirm the exact model of your vac. The WD16650 model is not designed to hold a filter bag. But the product above is the model number WD1851 which is designed to accommodate a filter bag. If your vac is WD1851, the part number of the filter bag is VF3502.

If you have any further questions or concerns, feel free to call us at 1-800-4-RIDGID (1-800- 474-3443) or you may send your email to [email protected]

Regards,
RIDGID
1 year ago
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