Water, rubble, workshop · review
Five gallons of stainless and 135 air watts, with both filters supplied.
Where this ends up A stainless steel tank and five gallons for seventy-five dollars, and it publishes air watts — the only honest measure of suction on this shelf. A hundred and thirty-five of them, which is the lower of the two figures Vacmaster gives.
135 air watts.
Air watts measure airflow multiplied by suction — the work done at the nozzle. It is the figure that tells you whether a vacuum lifts water out of a garage floor, and only Vacmaster publishes it here.
What the rest of the shelf gives instead is peak horsepower, on seven of twelve listings, and peak horsepower is not a power figure at all:
Vacmaster VFB511H — 5.5 PHP = 4100 W Craftsman 17040 — 5.0 PHP = 3730 W Shop-Vac — 4.5 PHP = 3356 W this — 4 PHP = 2983 W Craftsman 17250 — 2.5 PHP = 1865 W Armor All ×2 — 2 PHP = 1490 W
A 120 V American socket on a 15 A breaker supplies about 1800 W at absolute maximum. So the top four figures cannot be sustained power; they are measured at stall or across a fraction of a second.
And Vacmaster settles the question by publishing both scales on its own two machines:
this — “4 Peak HP” and “135 air watt motor” VFB511H — “5.5 PHP” and “320 Air Watts of Power, 20kPa”
Four to 5.5 peak HP is +37 per cent. A hundred and thirty-five to 320 air watts is +137 per cent. The two scales do not track each other, and only one of them describes the machine.
Three other listings publish kPa: both Giraffe Tools machines and the VFB511H, all three at 20 kPa. Two publish amps: the Bissell 2035M at 11 A, the 18P03 at 12 A.
The comparison that decides this purchase is with the machine beside it from the same maker.
Vacmaster VFB511H, $97.64 — 320 air watts, 20 kPa, 1 micron filtration, 25 feet of reach, nine accessories Vacmaster VOC508S, $74.99 — 135 air watts, stainless tank, 16 feet of reach, six accessories
So $22.65 buys 2.4 times the useful power, a quantified filtration rating, nine more feet of reach and three more tools.
What this one keeps is the stainless steel tank, which the VFB511H does not publish, and the lowest five-gallon price on the shelf.
What 135 air watts does comfortably: dry debris, sawdust, a spilled drink, a car interior. What it does less well: lifting standing water quickly, and pulling through a long hose, where airflow tells.
“PREMIUM CONSTRUCTION: Features a stainless steel tank.”
Two real advantages in a workshop.
It does not crack. A polypropylene drum — which both Armor All machines publish and most of this shelf implies — splits at the rim if it is dropped or kicked, and a cracked wet vacuum leaks from the bottom.
It does not hold smells or stains. Plastic absorbs what you put through it, and a drum that has held engine oil, drain water or plaster slurry keeps the evidence. Stainless rinses out.
The cost is weight: 5300 g (187 oz) against 2087 g (73.6 oz) for the 1.5-gallon Armor All AA155 — though this is three and a half times the capacity.
What stainless does not fix is the real failure of a wet vacuum, which is water reaching the motor. For that, two features on this shelf help and neither is here: the Shop-Vac at $139.99 has a “bottom drain outlet… without lifting or tilting the machine”, and the Bissell 18P03 has a semi-translucent tank with an “LED Full Water Tank Indicator”.
On a five-gallon drum, emptying means lifting about 19 liters of dirty water, which is twenty kilos in your arms.
“a cartridge filter for dry pick-up and a foam wet filter for wet pick-up.”
This is the clearest statement of the point on the whole shelf, and the point is the one most buyers get wrong.
A cartridge filter traps fine dust and is ruined the moment water goes through it: it clogs, sags, and then passes dust straight to the motor. A foam sleeve handles water and traps almost no dust.
So a machine sold for wet and dry needs both, and you swap. Running water through a cartridge is how one of these vacuums is quietly destroyed in its first month.
Three listings supply both. This, which explains it; the Armor All AA255W at $67.71, which lists “reusable cloth filter, foam wet filter” without saying why; and functionally the Kärcher at $172.99, which claims to need no swap at all — “the top-mounted cartridge filter ensures seamless cleaning without removing the filter - no matter if wet or dry dirt.”
Eight listings name one filter or none. The Craftsman 17250 includes a “Filter Bag”, which is dry-only, on a machine sold as wet and dry.
What this listing does not publish is a filtration rating. Its own sibling the VFB511H does: down to 1 micron, which is the only such figure on the shelf.
“16-feet of cleaning reach with hose and power cord.”
Two listings on this shelf add it up for you, and both are Vacmasters: this at 16 feet and the VFB511H at 25 feet.
Everyone else gives the parts:
Bissell 18P03 — a 32 ft hose (wall-mounted) · Giraffe Tools ×2 — 30 ft retractable · Craftsman 17040 — 15 ft cord + 7 ft hose = 22 ft · Armor All AA255W — 12 + 6 = 18 ft · Shop-Vac — 10 + 6 = 16 ft · Armor All AA155 — 6 + 4 = 10 ft · Kärcher — a 3.9 ft hose, battery-powered so no cord · Craftsman 17250 — a 5 ft hose, cord not published · Bissell 2035M — nothing
Sixteen feet on a five-gallon machine is the short end. A big drum is for a bigger job, and a bigger job wants reach — which is where the 25 feet on the sibling counts for as much as the air watts.
No blower. Six machines on this shelf convert: both Armor All models, both Bissells, the Craftsman 17250 and the Kärcher. Neither Vacmaster does, nor the Giraffe Tools pair, the Shop-Vac or the Craftsman 17040.
No filtration rating, where the sibling publishes 1 micron.
No hose bore. Three listings publish one: the Craftsman 17040 at 1-7/8 inch, the Craftsman 17250 and Armor All AA255W at 1-1/4 inch. The difference is 2.25 times the cross-section — the wide bore passes wood chips and plaster, the narrow one gives higher velocity for fine dust in crevices.
No accessory list. Six are included and none is named, where the Armor All AA255W itemizes all thirteen of its own.
No storage. Three listings publish on-board accessory storage, including the sibling VFB511H with “complete vac organization with on-board hose, cord and accessory storage” — which on a machine with six loose nozzles is the difference between having six in a year and having two.
No warranty. Both Craftsman machines publish 3 years and both Giraffe Tools machines 24 months. The other eight, this included, publish none.
And no drain, as above — which on five gallons is the omission you feel.
Read on the day this page was built: $75 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.
| Suction | 135 air watts — the real measure, see the FAQ |
|---|---|
| Tank | Stainless steel — the only stainless tank on this shelf |
| Capacity | 5 gallons |
| Both filters | A cartridge filter for DRY and a foam filter for WET, stated as such |
| Reach | 16 feet of cleaning reach from hose and power cord, published as a total |
| Rating | 4 peak HP, which the same maker pairs with 135 air watts — see the FAQ |
| Accessories | Six |
| Weight | 5300 g (187 oz) |
| Dimensions | 340 × 335 × 555 mm (13.4 × 13.2 × 21.9 in) |
| Blower | Not published |
| Filtration rating | Not published, where its own sibling publishes 1 micron |
| Hose bore | Not published |
| Warranty | Not published |
| Amazon reference | B08P1M8NX2 |
| EAN | 6939349517389 |
Air watts measure the work done at the nozzle — airflow multiplied by suction — and this maker is the only one on the shelf to publish the figure. It matters because of what the alternative is. Seven of these twelve listings publish peak horsepower alone, and peak horsepower is not a power figure: 5.5 PHP is 4100 watts and 5.0 PHP is 3730 W, where a 120 V American socket on a 15 A breaker supplies about 1800 W at maximum. Those numbers are measured at stall or over a fraction of a second. And Vacmaster proves the scale is unreliable by publishing both: this machine gives "4 Peak HP" with a "135 air watt motor", while its own VFB511H at $97.64 gives "5.5 PHP" with "320 Air Watts". So +37 per cent in claimed horsepower corresponds to +137 per cent in real power. The two do not track. Three other machines here publish kPa instead — both Giraffe Tools and the VFB511H, all at 20 kPa — and two publish amps. Only air watts tells you what arrives at the nozzle.
For general wet and dry pick-up, yes — and it is less than half what its own sibling delivers, which is the comparison that matters. The VFB511H at $97.64 publishes 320 air watts and 20 kPa. So $22.65 buys 2.4 times the useful power, plus a 1 micron filtration rating, 25 feet of reach against sixteen, and nine accessories against six. Against that, this one keeps the stainless steel tank — which the VFB511H does not publish — and it is the cheapest five-gallon machine on the shelf. What 135 air watts does comfortably: dry debris, sawdust, a spilled drink, a car interior. What it does less well: lifting standing water quickly, or pulling through a long hose, where the VFB511H’s extra airflow shows. The honest reading of this shelf is that the two Vacmasters are the only machines whose suction you can compare at all — and that one of them is twice the machine for a quarter more money.
In a workshop, yes — and it is the only one on this shelf. The bullet reads "PREMIUM CONSTRUCTION: Features a stainless steel tank." Two things follow. It does not dent. A polypropylene drum — which both Armor All machines publish and most of the rest imply — cracks at the rim if it is dropped or kicked, and a cracked wet vacuum leaks. It does not stain or hold smells. Plastic absorbs whatever you suck up, and a drum that has held engine oil, drain water or plaster slurry keeps the evidence. Stainless rinses clean. The cost is weight and price: this is 5300 g (187 oz) against 2087 g (73.6 oz) for the 1.5-gallon Armor All AA155, though it is also twice the capacity. What stainless does not do is help with the one real failure of a wet vacuum, which is water reaching the motor. For that the answers are a drain — only the Shop-Vac at $139.99 has one, a "bottom drain outlet" — and a fill indicator, which only the Bissell 18P03 has, with an "LED Full Water Tank Indicator".
Measured against the median of its own aisle here — not against everything on sale.
cleaning machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | Rating | Blower | Warranty |
|---|---|---|---|---|
| Vacmaster VOC508S | $75 | 4 peak HP, which the same maker pairs with 135 air watts — see the FAQ | Not published | Not published |
| Armor All AA255W | $68 | 2 peak HP — a catalog convention, see the FAQ | Yes, with a dedicated blower nozzle adapter | Not published |
| Vacmaster VFB511H 0201 | $98 | 5.5 PHP, which the same maker pairs with 320 air watts — see the FAQ | Not published | Not published |
| CRAFTSMAN CMXEVBE17250 | $45 | 2.5 peak HP — a catalog convention, see the FAQ | Yes | Three year limited — one of only four warranties on this shelf |
Details checked on October 4, 2026.
A workshop where the tank has to survive being kicked, at the lowest five-gallon price
Amazon reports what buyers took in the month before this page was last checked: at least 1,000.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for cleaning machines and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
1,250 W · 65 l/s airflow · 200 mbar · HEPA filter
The only machine here that publishes both numbers that matter — airflow and suction.
Best for: Trade use, or a home workshop where the vacuum runs alongside tools most weeks
1,000 W · 15 l · five paper bags included
The small, cheap, sensible one — and the bags in the box are most of the value.
Best for: A flat, a car and light workshop use, where storage space decides more than capacity
L class · HEPA filter · button filter cleaning · 2,000 W tool socket
Einhell's site-grade answer: dust class L with a HEPA element and a socket rated for a real power tool.
Best for: Site and workshop use where the vacuum runs off a saw, and where L-class filtration with a HEPA element is the requirement
