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Best Overall
Average finish: 2.9
Shop-Vac
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Average Finish: 2.9
Purchased for: $170
Made In: Vietnam
Overall winner with an average finish of 2.9, placing in the top half of every category. Fastest at picking up 5 gallons of water (3.81 s) and fastest at lifting 67 lb of sand (38.8 s), with strong suction (76 in) and good airflow (149 CFM). Loud at 91.7 dB and sprayed some water out the back during the water test. Claims a lifetime warranty and 2x motor life.
Fastest water and sand pickup, top-half finish in every category, and a lifetime warranty at a mid-pack price.
Runner-up
Average finish: 3.5
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Average Finish: 3.5
Purchased for: $270
Made In: China
Most expensive vacuum tested, but delivered the most suction at 84 in of water column, the lowest energy use at 1,047 W, and by far the quietest operation at 74.5 dB. Its scupper nozzle earned the best subjective carpet cleaning rating. No blower port, so air volume could not be measured.
Most suction (84 in), most efficient (1,047 W), and by far the quietest at 74.5 dB — but the priciest at $270.
Best Value
Average finish: 3.9
BAUER
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Average Finish: 3.9
Purchased for: $140
Made In: Malaysia
Harbor Freight brand, 16-gallon, 6.5 peak HP claim. Third overall with strong water (4.2 s) and sand (44.4 s) pickup times. The included air filter struggled badly, adding 176% more dust to the air, and the wheel kit shipped with the wrong-length steel rod, requiring about 20 minutes of setup and a DIY fix. Onboard storage for six accessories.
Strong water and sand pickup performance for $140 at Harbor Freight, held back by a poor stock air filter and a wheel kit part issue.
Prices ranged from $135 for the Vacmaster to $270 for the DeWalt. The overall winner, the Shop-Vac, landed in the middle of the pack at $170.
Suction is what allows a shop vac to pick things up. The DeWalt came out on top at 84 inches of water column, followed by the Stanley at 79 and the Shop-Vac at 76.
Air volume carries debris into the collection container. The Vacmaster led at 175 CFM, with the Craftsman close behind at 171 and the Bauer third at 154. The DeWalt has no blower port, so its air volume could not be accurately measured.
Air speed measured with a pitot tube. The Vacmaster again led at 90.42 mph, while the Stanley, despite excellent lift, struggled at 57.44 mph. The DeWalt could not be measured.
The Shop-Vac was the fastest at picking up 5 gallons of water at 3.81 seconds, with the Stanley second at 4.01 and the Bauer third at 4.2. The DeWalt beat the Ridgid head-to-head but no exact time was reported. The Bauer and Shop-Vac both sprayed some water out of the back during this test.
Moving sand efficiently depends on air volume, lift, and filter design. The Shop-Vac won at 38.8 seconds, followed by the Stanley at 41.6 and the Bauer at 44.4. The Ridgid's fine dust filter appeared to plug up, making it the slowest at 2 minutes 9 seconds.
Airborne particles from 0.3 to 10 microns were measured before and after one minute of runtime. The Channellock filtered best with an 88.1% decrease in dust, followed by the Ridgid at 86.23% and the Vacmaster at 74.26%. Negative values mean the vacuum added dust to the air: the Stanley increased airborne dust by 68.87% and the Bauer by 176%.
All eight vacuums advertise a 16-gallon capacity, but none came close. The Ridgid held the most without leaking at 11.26 gallons. The Stanley and Craftsman posted higher numbers but were disqualified because their float valves failed to stop suction, overfilling the tanks and leaking water onto the floor.
The DeWalt was by far the quietest at 74.5 dB, backing up its claim of new noise-reduction technology. The Vacmaster finished a distant second at 83.8 dB. Despite a claimed noise diffuser, the Channellock was the loudest at 94.5 dB.
The DeWalt was by far the most efficient at 1,047 W (about 8.8 amps) while still producing the most suction. None of the vacuums come close to their 6.5 HP claims: converting watts to horsepower, the highest actual output was the Vacmaster at roughly 2.07 HP.
Weight can be an indicator of build quality, but also affects mobility. The Stanley was the lightest at 16.69 lb, while the stainless steel Ridgid was the heaviest at nearly 31 lb.
Sand was spread across carpet to compare utility attachments. The DeWalt's scupper nozzle earned the best possible rating of 1 for both cleaning ability and ease of use. The Stanley and Channellock each earned a 1.5 thanks to attachment designs that maintain airflow without suctioning to the carpet. The Vacmaster and Craftsman attachments tended to seal flat against the carpet, hurting performance.
Raw test data was converted into a first-to-last ranking across all categories. The Shop-Vac won with an average finish of 2.9, placing in the top half of every category and taking first place in two. The DeWalt followed at 3.5, standing out for suction, efficiency, and quiet operation, and the Harbor Freight Bauer rounded out the top three at 3.9 despite its filter and wheel kit issues.