Start with the job the machine has to do
Before comparing any mobile steam cleaning machine specifications, write down the actual duty. Note where the cleaning happens, how the machine reaches that place, what is being cleaned, and what has to happen afterwards. A unit that will be pushed along a wash bay at one fixed point needs a different set of features from a unit that has to cover a row of parking bays or move between floors of an indoor garage.
In PowerDe's cleaning range, that difference is built into the models themselves. The driving-style units — PWD01, PWD02 and HMW2 — are described as mobile active-water cleaning machines for indoor garages and narrow outdoor parking spaces, and they add a hot-water mode alongside dry and wet steam. The hand-pushed HMW3 and the fixed HW02 are built around dry and wet steam only. A comparison sheet that does not start with the duty will simply compare numbers that were never meant to answer the same question.
Mobility and how the unit is moved
"Mobile" covers a wide range of real-world behaviour, so record the method of movement, not just a label. PowerDe separates driving-style machines from hand-pushed ones, and the HMW3 parameter table lists "hand push" as its mode of movement. For a fleet wash or a long line of vehicles, a driving-style unit changes how much ground an operator can cover in a shift. For a single room, a hand-pushed unit on wheels is usually the simpler choice.
Then compare the footprint against the space you actually have. The HW02 detail page gives overall dimensions of 1,200 × 800 × 1,200 mm including handles, and the HMW3 detail page gives L1150 × W520 × H1030 mm. Put those numbers against your door widths, lifts, storage corner and work area. A machine that cannot pass the doorway it has to pass is not a candidate, no matter how good the rest of the sheet looks.
Power supply and battery options
Power is where many comparison sheets fall short, because it is not one line but three: the supply the machine needs, whether it carries a battery, and what is available on site. PowerDe lists several cleaning models in two variants — with battery and without battery — so the same model can appear as two different purchasing options. The HMW3 detail page lists a 48 V battery as its working power supply with a 4.5 kW heating element, while the HW02 detail page is titled as a 220 V machine and lists 220 V as its working voltage with 6 kW of heating power.
Treat published figures as the manufacturer's values for that page, and ask for written confirmation of anything that will drive your electrical work — circuit rating, socket type, whether three-phase supply is needed, battery capacity and run time. Where a page does not state a figure, leave the comparison row blank and request it. A blank row that is answered in writing is worth more than a guessed number.
Cleaning modes: dry steam, wet steam, hot water
Count the modes, then check which ones your work needs. Dry steam carries less free water and suits surfaces where you want heat and cleaning action without a lot of runoff. Wet steam adds moisture for heavier soiling. Hot water, offered on the PWD01, PWD02 and HMW2 driving-style models, is a separate mode again. A PowerDe steam cleaning machine chosen for engine compartments and vehicle work benefits from having the right mode available rather than from having the highest power rating on paper.
The HW02 detail page lists 160° steam temperature and 0.8 MPa vapour pressure, described as a high-temperature, high-pressure machine that switches between dry and wet steam. If temperature and pressure matter to your cleaning result — for grease, carbon deposits, or sanitising work — ask for the values for the specific model and variant you are being quoted, and compare like with like.
Tank size, water inlet and consumption
Tank capacity decides how long a machine runs before someone stops to refill it, and refill effort is an operating cost that rarely appears on a datasheet. The HMW3 detail page lists a 50 L clean water tank; the HW02 detail page lists an 80 L tank in SUS304. Both pages list a tap-water inlet with a 4-point internal-tooth fitting, and the HW02 page notes a 1/2 inch connection. Check that your water point and hose fittings match, and ask about water consumption per hour if you are working somewhere with a foul-water drainage limit.
Protection, vacuum and the accessories that decide the result
Ask what protections the machine provides and how they are operated. The HW02 page describes leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection; the HMW2 and PWD02 pages mention leakage, short-circuit, high-temperature, high-voltage and water-shortage protection. The wording differs between pages, so take the list from the page for the model you are buying rather than assuming one description covers the whole range.
Then look at what is supplied with the machine: nozzles, extension wands, hose length, brush tools, and whether a vacuum function is included — the HW02 page lists dry/wet steam together with a vacuum cleaner. The HMW3 page describes cleaning with a high-pressure water gun and nozzle. Tooling and hose reach shape what one operator can finish in a working session, so request the accessory list for the exact order.
Service, documentation and the questions to ask the supplier
Close the comparison with the paperwork and support behind the hardware: the warranty terms, where spare parts and wear items come from, who services the unit, and what training is provided. Ask for a written data sheet covering the items the public page leaves out — weight, noise, hose and wand lengths, charger output and battery run time. If your site has unusual conditions — no water point, limited ceiling height, a need to work away from a fixed supply — raise that at the same time, since the range is built around different power and mobility designs.
PowerDe also lists engineering services alongside its cleaning equipment, including product development and hardware testing for cleaning equipment, which matters if you are specifying machines for a growing operation rather than replacing a single unit.
A comparison template you can fill in on site
Lay the columns out as: model and variant (with or without battery); method of movement; overall dimensions against your access route; supply voltage and heating power; battery voltage; modes offered; steam temperature and pressure; tank capacity and material; water inlet and fittings; protection features; vacuum function; included tools; accessory and spare-part availability; warranty and service support. Fill each row from the manufacturer's page for the model you are quoting, and mark anything unpublished as "to be confirmed in writing".
A sheet built this way shows you which machine fits your workflow, access and utilities before price enters the discussion — and it gives you a clear list of questions to send with your enquiry.
To review the full cleaning range and request the missing data for a specific model, see the PowerDe cleaning equipment series and contact pages.
