Start with the surface and the soil, not the machine
Two jobs that both sound like “steam cleaning” can need completely different equipment. A depot washing vans needs to lift road film and salt from painted panels and wheel arches. A workshop removing cutting fluid residue from a machine base is dealing with thin oil on steel. A kitchen dealing with range hood grease is working with polymerised fat that has been baked on by heat. Steam helps in all three cases, but the pressure, the water volume, the mode (dry steam, wet steam or hot water) and the time the operator can spend on one item all change with the soil.
Write down the three or four surfaces the machine will touch most often, and the residue you actually see at the end of a shift. If the answer is a mix of vehicle bodies, engine bays and hard flooring, the machine needs to switch between modes rather than hold one setting. PowerDe's cleaning equipment series separates its models exactly on this point: mobile active-water machines cover dry steam, wet steam and hot water, while the hand-pushed and fixed units are built around dry and wet steam for indoor and disinfection-oriented work.
Match the machine format to how the operator moves
Format decides more than portability; it decides whether staff will actually use the equipment. In a parking structure or a rented service bay with tight aisles, a unit that must be pushed by hand over 60 metres of concrete will stay in the store room. For those layouts, a driving style steam cleaner lets one operator carry the tank, the heater and the lance through the site instead of dragging hoses behind them. The PowerDe PWD series is listed for indoor garages and narrow outdoor parking spaces in exactly this way, and is offered both with and without a battery so a buyer can decide whether the site has overnight charging.
Where cleaning always happens in one place — a fixed bay, a wash stall, a production cell — a stationary unit with a mains supply is usually the simpler answer, because there is no battery to manage and no runtime to plan around. The fixed PowerDe HW02 is described for that kind of station: it runs on 220 V, heats at 6 kW, and the detail page lists 160° steam temperature at 0.8 MPa vapour pressure with an 80 L SUS304 tank, plus a vacuum function for interiors. Before signing, check those figures against your own bay: measure the distance from the water inlet to the farthest point you need to reach, and confirm the inlet fitting (the page notes a 4-point internal-tooth joint, 1/2 inch) matches the plumbing you already have.
Indoor facilities that clean equipment on a schedule, rather than vehicles, sit between those two. The hand-pushed PowerDe HMW3 is listed with dry and wet steam modes, a 4.5 kW PTC heater, a 50 L clean water tank and 48 V battery operation, and the listing describes it for cleaning and disinfecting items such as hospital beds and medical machinery. Dimensions of L1150 × W520 × H1030 mm are the number to check against lift doors, corridor widths and the height of any doorway the unit must pass through.
Check the utilities you can actually supply
Most steam-cleaning purchases stall on utilities, not on cleaning performance. Work through them before the quote: available supply voltage and the socket or breaker rating; whether the site has a tap connection the machine can use; floor drainage, since steam condenses and a wash bay still needs somewhere for the run-off; and, for battery models, where charging will happen and who owns the electricity. If your site cannot supply a 220 V connection at the point of use, a fixed machine is not the right format no matter how good its heating figures look.
Then check the protections listed on the page against your own safety paperwork. PowerDe's mobile and fixed descriptions mention leakage, short-circuit, high-temperature, high-voltage and water-shortage protection, which is the kind of wording a facilities or HSE reviewer will look for when wet work and electrical heating are involved in the same room. Do not assume a model includes a protection that is not on its listing — ask the supplier to confirm it in writing.
Run a trial on your own dirt
Ask for a demonstration on your worst sample, not on a clean panel. A useful trial records four numbers: time to heat up before work can start; time one operator needs on one representative item; how often the tank has to be refilled during a shift; and what the machine cannot reach. If your team currently hand-scrubs engine bays or range hoods and the trial shows that engine compartment steam cleaning or heavy grease work can be done with a lance instead of brushes and detergents, that is the comparison to put in the business case — along with the water and detergent the site stops buying.
Confirm the specifications before you order
Finally, treat any figure you cannot find on the page as unresolved. Steam temperature, pressure, tank volume, heating power and footprint are the values that determine fit; battery capacity, runtime, hose length and accessory lists are the values that determine day-two usability, and they are not always published. Send your surface list, your utility details and your shift pattern to the supplier and ask for a written specification for the exact model number, plus the option of a customised configuration if your site does not match a standard build.
Shenzhen PowerDe Automation Precision Equipment lists engineering services, product development and hardware testing alongside its cleaning models, so a buyer with a non-standard bay or a fixed production position can raise a customised requirement instead of forcing a catalogue machine into the wrong layout. That question — standard model or configured one — is worth answering in the first conversation, because it changes lead time, cost and who is responsible for commissioning.
