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Shop-Vac 5 Gallon Wet/Dry Vac vs Koblenz WD-390k2 Wet/Dry Vac

The Shop-Vac is the stronger wet/dry vacuum for garage and workshop work: bigger 5-gallon tank, more suction (2.5 peak HP, 120 air watts), a blower port, and a bagged setup that keeps fine dust contained. The Koblenz is the better pick for small spaces and quick cleanups, with a lighter 3-gallon body, a much longer 20-foot cord, and a sanitizer kit for messes you want to disinfect. Owners of both rate them well; the Shop-Vac has the deeper track record and wider parts availability, while the Koblenz trades capacity and power for portability and reach.

  • Choose the Shop-Vac if you want maximum capacity and suction for garage, workshop or basement messes, and you value the blower port and bagged filtration.
  • Choose the Koblenz if you clean smaller areas, need long cord reach without an extension, or want the sanitizer kit for germ-prone spills.

Prices

  • Shop-Vac 5 Gallon Wet/Dry Vac: $73.91 at Shop-Vac Store (checked today)
  • Koblenz WD-390k2 Wet/Dry Vac: $62.97 at Walmart (checked today)
  • Difference: the Koblenz WD-390k2 Wet/Dry Vac is $10.94 cheaper than the Shop-Vac 5 Gallon Wet/Dry Vac today
Shop-Vac
Shop-Vac 5 Gallon 2.5 Peak HP Wet/Dry Vac

Shop-Vac 5 Gallon Wet/Dry Vac

Shop-Vac 5 Gallon 2.5 Peak HP Wet/Dry Vac

$73.91at Shop-Vac StoreChecked 11 h ago
See all prices and details
Visit Shop-Vac Store
Pros
  • Large 5-gallon tank handles big wet and dry messes
  • Strong 2.5 peak HP motor with 120 air watts
  • Blower port clears dirt and grass clippings
  • Bagged filtration plus cartridge, foam sleeve and two reusable dry filters
  • Lock-on hose with three extension wands reaches into tight spots
Cons
  • Short 6-foot cord needs an extension cord in most garages
  • Heavier and bulkier to carry up stairs
  • Bagged design means buying bags
Koblenz
Koblenz Wet/Dry Vac, 3 Gallon, 2 Peak HP with Sanitizer Kit Shop Vacuum (WD-390k2)

Koblenz WD-390k2 Wet/Dry Vac

Koblenz Wet/Dry Vac, 3 Gallon, 2 Peak HP with Sanitizer Kit Shop Vacuum (WD-390k2)

4.7(13 ratings)
$62.97at WalmartChecked 5 h ago
See all prices and details
Visit Walmart
Pros
  • Lightweight 3-gallon body is easy to move around
  • 20-foot cord gives long reach without an extension
  • Sanitizer kit kills 99% of germs and bacteria
  • 6-foot hose plus crevice tool and dust brush for tight spaces
  • Rated 4.7 out of 5 by owners
Cons
  • Smaller tank fills fast on big spills
  • Less suction than the Shop-Vac
  • No blower port

What separates them

Shop-Vac 5 Gallon Wet/Dry VacKoblenz WD-390k2 Wet/Dry Vac
Tank capacity5 gallons3 gallons
Suction power2.5 peak HP, 120 air watts, 60 CFM2 peak HP
Cord length6 feet20 feet
Hose1.3-inch lock-on hose, 7 feet, with 3 wands6-foot hose
FiltrationBagged, cartridge filter, foam sleeve and two reusable dry filters includedWet/dry filter
Blower functionRear blower port for dirt and grass clippingsNo blower port listed
Special featureNone beyond standard wet/dry useSanitizer kit that kills 99% of germs and bacteria
PortabilityTop carry handle and casters, heavier 5-gallon bodyLightweight 3-gallon design

Price history

  • Shop-Vac 5 Gallon Wet/Dry Vac: lowest $73.91 on Nov 10 at Shop-Vac Store.
  • Koblenz WD-390k2 Wet/Dry Vac: lowest $62.97 on Nov 7 at Walmart.

Prices at every store

Shop-Vac 5 Gallon Wet/Dry Vac

  • SearsNew

    In stock

    $133.20Free shippingChecked 15 h ago
    Visit Sears
  • Shop-Vac StoreNew

    Availability unknownReturn policy

    $73.91Checked 11 h ago
    Visit Shop-Vac Store

Also available at

  • Shop-Vac StoreCheck price at Shop-Vac Store
All 2 stores and price history →

Koblenz WD-390k2 Wet/Dry Vac

  • WalmartNew

    In stock

    $62.97Free shippingChecked 5 h ago
    Visit Walmart

Also available at

  • WalmartCheck price at Walmart
Prices and history →

Specs compared

SpecShop-Vac 5 Gallon Wet/Dry VacKoblenz WD-390k2 Wet/Dry Vac
Filter typeCartridge FilterWet/dry
ColorBlackGray
Power SourceMainsAC Mains
Cord Length6 ft20 ft
Hose Length1.3 in6 ft
Tank capacity5 gal—
Peak horsepower2.5 Peak HP—
Cord typeCorded—
Bagged/BaglessBagged—
Included accessoriesFilter—
Surface TypeDry, Wet—
Wet / DryYes—
Show all 28 specsShow fewer specs
SpecShop-Vac 5 Gallon Wet/Dry VacKoblenz WD-390k2 Wet/Dry Vac
Suction Power120 (Air Watts)—
Vacuum TypeCanister—
Design HighlightsBlower port—
Voltage120 V—
Brand—Koblenz
Volume capacity—3 gal
Horsepower—2 HP
Power type—Corded Electric
Rec. use—Commercial, Home, Residential
Size—

What reviewers say

Koblenz WD-390k2 Wet/Dry Vac

  • 4.7 / 513 ratings

The vac holds 4.7 out of 5 from 13 ratings, a small sample. Owners mostly report it works well for small wet and dry messes and is easy to carry.

What people mention
  • PortabilityPraisedOwners say the 3-gallon body is light enough to carry from room to room.
  • SuctionPraisedThe 2 peak HP motor is described as strong for a vac this size.
  • Tank sizeCriticisedThe 3-gallon tank fills quickly on bigger wet or dry jobs.
  • Sanitizer kitMixedBuyers like the germ-killing claim but say it adds steps to wet cleanup.

Questions and answers

Which is better for a garage or workshop?
The Shop-Vac. Its 5-gallon tank, 2.5 peak HP motor and blower port suit sawdust, dirt and larger wet messes better than the 3-gallon Koblenz.
Which is easier to carry around the house?
The Koblenz. It is lighter and smaller at 3 gallons, and its 20-foot cord lets you move room to room without hunting for an outlet.
Does the Koblenz really sanitize?
Koblenz says its sanitizer kit kills 99% of germs and bacteria. Treat that as the maker's claim and follow the kit instructions for the surfaces you clean.
Which lasts longer?
Both are corded canister vacs with simple motors. The Shop-Vac has a longer track record and easier access to filters and parts, which usually matters more for long-term service than the spec sheet.
Is the Shop-Vac worth stepping up to?
Yes if you need capacity, suction and a blower. If you mostly clean cars, small rooms and quick spills, the Koblenz covers that with less weight.
Can both handle wet messes?
Yes. Both are wet/dry vacuums. The Shop-Vac includes a foam sleeve filter for wet pickup; switch the Koblenz to its wet/dry filter setup before liquids.

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  • Ridgid HD06001 6 Gallon 3.5 Peak HP NXT Wet/Dry Shop Vacuum vs Koblenz Wet/Dry Vac, 3 Gallon, 2 Peak HP with Sanitizer Kit Shop Vacuum (WD-390k2)

Buying guides that pick them

  • Best wet/dry shop vacuums
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3 gal
Manufacturer—Koblenz
Batteries incl—N
Is variable speed—N
Charger included—N
Color category—Gray
Model—WD 390 K2