Wet Sign does not score machines out of ten, or out of five, or out of seven. There is no star rating and no badge. What every page gives you instead is the answer to the question an operations manager asks before signing a purchase order: what does this machine do to the shift?
We run that question through one system, and everything on the site comes out of it. It is called the Shift Ledger™. This page is the system, the sources, and the limits, in one place, so you can check the working yourself.
The spec is the fact. The consequence is the content.
A manufacturer publishes a 50-foot cord. On its own that is a number, and a number cannot be spent. One plug per classroom instead of three is the same fact after it has been to work, and that version can be priced against a payroll.
Every page here runs the same translation. Motor wattage becomes suction you can feel through a wand. Tank capacity becomes how many rooms you clean before you stop to dump. Weight becomes whether a crew member is still willing to strap the machine on at hour four.
A specification is only worth a paragraph here when it changes what you would buy. That is the test every page has to clear, and it is why two reviews of near-identical machines can look nothing alike.
The Shift Ledger™
Machines are read against four ledgers. A ledger is not a score. It is a record of what a machine charges you on a shift, in the currencies a shift actually pays in: minutes, downtime, bodies, and paperwork.
| Ledger | The question it answers | What makes it move |
|---|---|---|
| Time | How many times does a shift stop? | Cord, runtime, capacity, recovery |
| Stoppage | How long is the route down when it quits? | Service, parts, consumables, warranty |
| Bodies | What does it ask of the person holding it? | Weight, balance, noise, controls |
| Paperwork | What does the building make you prove? | Filtration, chemicals, certifications |
The same four questions, on every machine, every time. A machine that answers all four well is the machine you buy. A page that skips one is a page you cannot line up against the next one.
1. Time: what the machine does to the clock
Cord length, battery runtime, brush width, tank capacity, recovery rate. These decide how many times a shift stops: for an outlet, a dump sink, a refill, or a charger. A 35-quart tank is fewer trips to the sink than a 20-quart tank on the same floor, and that difference compounds across a building.
2. Stoppage: what happens when it quits
Every machine quits eventually. The ledger question is how long the route is down while it does. Warranty structure, whether consumables are stocked in three places or one, and whether a replacement part ships in two days or two weeks all belong to this ledger. A long service tail does not make a machine bad. It makes it a machine worth owning a spare of.
3. Bodies: what it costs the person holding it
Weight, balance, noise, grip, and the number of motions a fill takes. An 11-pound harness and a 21-pound single-shoulder can are both vacuums, and the specification sheet is the only place they look like the same purchase. The heavier the machine, the shorter the shift it can be carried on.
4. Paperwork: what the building makes you prove
Filtration class, chemical compatibility, certifications, and the documentation a facility manager wants on file. Four levels of HEPA filtration is not a premium feature. It is the difference between a crew working in a LEED-certified building and a crew standing in the lobby explaining itself.
Route Ceiling™: what you get instead of a number
Four ledgers do not collapse into one number, and the collapse is exactly where the useful information disappears.
Two scrubbers can both be strong buys. One is right for a 4,000 square foot clinic and cannot finish a warehouse before the battery gives out. The other is the reverse. A single number flattens both into the same figure and hands you a ranking that has nothing to do with the building you actually clean.
So the answer is a Route Ceiling™: the workload where it stops being the right tool, and the reason it stops there. Below that line, buy with confidence. Above it, you are shopping for a different machine. A ceiling is a limit, not an insult.
A score is the easiest thing on a review site to fake and the hardest thing to check. Nobody can audit an eight out of ten. A route ceiling arrives with its reasons attached, so it can be argued with, corrected, and trusted.
The verdict is written the way an operator would say it out loud: buy it if and skip it if, with the reason on every line. Your square footage does the scoring.
Where the numbers come from
Manufacturer specification sheets and product documentation first, always. Where a claim rests on a standard or a regulation, the page links the source: standards bodies, and the Code of Federal Regulations for the United States rules we cite.
None of it is measured by us. Wet Sign is not a lab, and no page pretends to be one.
What we do not do
- We do not test equipment, and no page claims we did. We have not run a scrubber, filled a tank, or carried a backpack vacuum on a route.
- We cannot predict unit-to-unit variance. A bad batch, a shipping dent, and a service counter having a bad month are all real, and none of them are visible in a specification sheet.
- We do not give safety, legal, or compliance advice. Where a rule exists, we state the requirement and link it. What your facility has to meet is a question for your own counsel and your chemical supplier.
- We do not accept payment for coverage. No sponsored placements, no paid rankings, no display advertising.
What every machine page gives you
The same questions in the same order, so two machines can be compared without relearning the layout.
- An intro that says what the machine is and what it does to a shift.
- Sections that take the specifications apart one consequence at a time.
- A head-to-head against the machines it is actually bought against, with a verdict on each row.
- A buy it if and skip it if split, for the reader who is buying something today.
- The full specification table in one place, with nothing cut for length.
- The questions buyers ask before they commit.
Anything you might want to check on your own arrives as a table. Everything else is just the argument.
When we get it wrong
Specifications change, models get discontinued, and pages age. Email hello@wetsign.shop with the page, the figure that is wrong, and where you read the right one.
When we act on a correction, the updated date at the top of the page moves forward. Pages are revised rather than replaced, so a link you saved keeps working. A discontinued model is either retired or pointed at its successor, in the open, not quietly deleted.
The one place you put your own numbers in
Nothing here pretends to know your building. The one place your own figures do the work is the equipment payback calculator, which takes floor area, shift hours, and machine cost and returns a payback window: how long the machine takes to pay for itself at your workload. It is arithmetic, not a recommendation, and it is the only number on the site you get to change.
How we make money
Wet Sign is an Amazon Associate. Links to Amazon carry our associate tag, and if you buy something we earn a commission at no extra cost to you. That commission never decides which machines get a page, never changes a verdict, and never buys a higher position. Where a model has no live listing, the link is a plain Amazon search rather than a product link, and it earns nothing unless you buy after searching. The affiliate disclosure has the detail.
The short version
- Spec to consequence. Every paragraph earns its place by saying what a number costs on a shift.
- Four ledgers. Time, stoppage, bodies, paperwork.
- No score, deliberately. A Route Ceiling™ with its reasons, plus buy it if and skip it if.
- Sources linked. Manufacturer documentation, standards, and regulations.
- Corrections move the date. The updated date is real and it only moves forward.
- Affiliate links pay the bills, never the verdict.
Shift Ledger™ and Route Ceiling™ are trademarks of Wet Sign. Manufacturer and brand names belong to their owners.