Peak HP Check

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The 7 best wet/dry shop vacs, by the numbers that matter

Updated

Short version: for a workshop, I'd pick the Vacmaster 12 gallon. Its listing states 140 CFM and 60 inches of water lift, so you know what you are getting. For floods and remodel mess, the CRAFTSMAN 16 gallon has the biggest tank and a drain. For fine dust in a small vac, the Vacmaster Beast 5 gallon ships with a fine dust filter and a bag. For the car, the Armor All 2.5 gallon is enough.

Not sure which size fits your job? Use the job checker first.

Quick comparison

ModelPeak HP claimedClaim in wattsReal wattsShareTankHoseCFMWater lift
CRAFTSMAN 16 gal6.54,849 W1,440 W30%16 gal2-1/2 inNot on the listingNot on the listing
Vacmaster 12 gal5.54,103 W1,416 W35%12 gal2-1/2 in14060 in
Vacmaster Beast 5 gal5.54,103 W1,320 W32%5 gal1-7/8 inNot on the listing82 in
DEWALT 6 gal42,984 W864 W29%6 gal1-7/8 inNot on the listingNot on the listing
Stanley 6 gal42,984 W1,200 W40%6 gal1-1/4 inNot on the listingNot on the listing
Vacmaster 5 gal steel42,984 W960 W32%5 gal1-1/4 in8066 in
Armor All 2.5 gal21,492 W720 W48%2.5 gal1-1/4 inNot on the listingNot on the listing

"Claim in watts" is peak HP times 746. "Real watts" comes from the amps or watts on each listing. Shop-Vac's own product pages say peak horsepower is a term used for consumer comparison and that its motors do not operate at the peak horsepower shown. Vacmaster's maker page for the 12 gallon model carries the same note.

The picks

Specs and owner feedback checked on Amazon September 19, 2026. Peak HP, amps, watts, CFM and water lift are copied from each listing. Where a listing disagrees with itself, the card says so.

Best for big wet jobs and renovation mess

CRAFTSMAN CMXEVBE17595 16 Gallon 6.5 Peak HP

Real watts at the wall (6.5 peak HP claimed)1,440 W

Get this if you need to pull up a lot of water or clean up after a remodel, and you have the floor space to store a 16 gallon tank. Skip it for car cleaning or a small closet. It is 26 pounds empty and the 2-1/2 inch hose is bulky in tight spots. 6.5 peak HP would be about 4,849 watts. The vac draws about 1,440 watts (12 A and 1,440 W on the listing), which is 30 percent of that. The listing does not give CFM or water lift, so the amps are the only hard power number you get.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners say the suction is strong and that it picks up everything from dust to big messes.
  • They complain about: Durability is split. Some report many years of hard use, others say it quit after 20 to 30 uses. Some find the casters too small for the size of the tank, and owners disagree on how loud it is.

Good

  • Drain port, so you do not lift a full tank
  • Widest hose size here
  • Longest cord here at 20 ft, tied with the Vacmaster 12 gallon

Watch out for

  • No CFM or water lift on the listing
  • Big to store. Some owners find the casters small
  • Owner reports on durability are split
Check today's price on Amazon
Best for the shop, and it states its CFM

Vacmaster VJH1211PF 12 Gallon 5.5 Peak HP

Real watts at the wall (5.5 peak HP claimed)1,416 W

Get this if you want a full size shop vac whose listing tells you the airflow: 140 CFM and 60 inches of water lift. Skip it if you mostly clean cars. The 2-1/2 inch hose and 24 pound body are more than that job needs. 5.5 peak HP would be about 4,103 watts. The vac draws about 1,416 watts (11.8 A and 1,416 W on the listing), which is 35 percent of that. The maker's own page says CFM and lift were measured to an ASTM standard at the end of the included hose, and lists 143 CFM, a little more than the Amazon listing.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners praise the suction, the motor and the large tank. One mentions using it around a pool.
  • They complain about: Several owners report the lid clasps breaking after about 14 months. Dust control gets mixed reports, and some mention clogging.

Good

  • States CFM, water lift and air watts
  • Highest stated airflow here
  • Drain port and 20 ft cord

Watch out for

  • Several owners report lid clasps breaking
  • No noise number on the listing
  • Maker's page and the Amazon listing give slightly different CFM
Check today's price on Amazon
Best small vac for fine dust

Vacmaster Beast VFB511H 5 Gallon 5.5 Peak HP

Real watts at the wall (5.5 peak HP claimed)1,320 W

Get this if you want strong suction in a vac you can carry, or if you clean up fine dust. It ships with a fine dust cartridge filter and a dust bag, and the maker claims they capture particles down to 1 micron. Skip it for flood cleanup. Five gallons fills fast and there is no drain. 5.5 peak HP would be about 4,103 watts. The vac draws about 1,320 watts (11 A and 1,320 W on the listing), which is 32 percent of that. It has the highest water lift of the picks that state one, at 82 inches.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners call it powerful for its size and easy to move and lift. Car cleaning and dust pickup get good mentions.
  • They complain about: Owners report that it tips over easily while in use. Some wish it came with more attachment options.

Good

  • Highest stated water lift here
  • Fine dust filter and bag in the box
  • States air watts and lift, so you can compare it

Watch out for

  • Owners say it tips over easily
  • No CFM on the listing
  • Small tank, no drain
Check today's price on Amazon
Best mid-size pick for a garage

DEWALT DXV06P 6 Gallon 4 Peak HP

Real watts at the wall (4 peak HP claimed)864 W

Get this if you want a mid-size vac with a 1-7/8 inch hose for general garage and basement cleanup. Skip it if you need a drain port, or if you want CFM and water lift in writing. The listing gives neither. 4 peak HP would be about 2,984 watts. The vac draws about 864 watts (7.2 A on the listing x 120 V), which is 29 percent of that. The listing's wattage line reads 135.5 watts, which cannot be the electrical draw of a 7.2 amp motor. We use the amps.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners report strong suction and find it fairly quiet. They mention small basement messes and drywall dust, and say the wheels roll smoothly.
  • They complain about: Durability gets mixed reports. Some say it holds up, others say it broke after a year.

Good

  • Lowest amp draw of the mid-size picks, so it shares a circuit more easily
  • 1-7/8 in hose is a middle ground for debris and tool size
  • Owners report smooth rolling casters

Watch out for

  • No CFM, lift or air watts on the listing
  • The wattage line on the listing does not match the amps
  • 10 ft cord
Check today's price on Amazon
Best starter kit for house and car

Stanley SL18116P 6 Gallon 4 Peak HP

Real watts at the wall (4 peak HP claimed)1,200 W

Get this if you want one vac for the car, the house and small garage jobs, with all three filter types in the box: a reusable dry filter, a dust bag and a foam filter. Skip it for wood chips and chunky debris. The 1-1/4 inch hose is the narrowest size. 4 peak HP would be about 2,984 watts. The vac draws about 1,200 watts (1,200 W on the listing), which is 40 percent of that. The listing's amps line says 3.7 A, which does not match its own 1,200 watts. We use the watts.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners say it has a lot of suction for its size. One lists dirt, wood fibers, mud, glass and sawdust, and owners like it for the garage.
  • They complain about: Durability is split, with some reports of it breaking after 6 months. Some owners wish the cord were longer.

Good

  • Dry filter, bag and foam filter all included
  • Light for a 6 gallon vac
  • Four swivel casters

Watch out for

  • Loudest number here at 80 dB
  • Amps and watts on the listing disagree
  • 1 year warranty, and some owners report early failures
Check today's price on Amazon
Best light vac that states its numbers

Vacmaster VOC508S 5 Gallon 4 Peak HP Stainless

Real watts at the wall (4 peak HP claimed)960 W

Get this if you want a light vac for the house and car and you like seeing the real specs: 80 CFM, 66 inches of water lift, 135 air watts in the bullets. Skip it for shop debris. It has a 1-1/4 inch hose and the lowest stated airflow here. 4 peak HP would be about 2,984 watts. The vac draws about 960 watts (960 W on the listing), which is 32 percent of that. The listing also shows a second air watts line of 200 and an amps line of 4.36 that does not match 960 watts. Plan on the smaller numbers.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners like the strong suction, the compact size and the low weight.
  • They complain about: The review summary we read was mostly positive. The main complaint is the cord, which several owners wish were longer.

Good

  • States CFM, lift and air watts
  • Light at under 12 pounds
  • Ships with both a dry and a wet filter

Watch out for

  • Several owners wish the cord were longer
  • Two different air watts numbers on one listing
  • Narrow hose, not for chips or chunks
Check today's price on Amazon
Best for cars and a shelf in the closet

Armor All AA255 2.5 Gallon 2 Peak HP

Real watts at the wall (2 peak HP claimed)720 W

Get this if your main job is the car, or you want a small vac that lives on a shelf. Skip it for anything you would call a mess. The tank is 2.5 gallons. 2 peak HP would be about 1,492 watts. The vac draws about 720 watts (6 A and 720 W on the listing), which is 48 percent of that. That is the smallest gap on this site, and its amps and watts agree with each other, which is not true of every listing here.

Key specs (from the manufacturer listing)

Recurring themes in owner feedback

  • They like: Owners say it has more suction than they expected for its size. They like that it is small enough to store, light, and comes with the attachments they need.
  • They complain about: The review summary we read was mostly positive. The main tradeoff is size: a 2.5 gallon tank and a 1-1/4 inch hose are for small jobs only.

Good

  • Lowest power draw here
  • Car tools in the box
  • Small and light

Watch out for

  • Tiny tank
  • No CFM or water lift on the listing
  • Cloth filter is not for fine dust
Check today's price on Amazon

Before you buy any shop vac