Fixed or Mobile: the Question Is Where the Machine Goes to the Work
Operators comparing industrial steam cleaning equipment usually narrow the choice quickly once one question is answered: does the machine travel to the task, or does the task come to a fixed cleaning point? A fixed unit is installed at a station and connected to a water supply and mains power. A mobile unit — hand-pushed or driving-style — carries its own water tank and, in battery versions, its own power. Everything else in the comparison follows from that split.
Both options are available in the PowerDe cleaning range, and the right answer depends on site layout, workload pattern, and how much travel time costs in your operation. Below are the factors that decide it.
1. Site Layout and Distance Between Tasks
If cleaning happens at fixed locations — a vehicle bay, a wash station, a production line that stops in the same place each shift — a fixed machine is usually the better buy. It stays connected to a tap and to 220 V power, so there is no refill walk and no cable to reposition. The PowerDe HW02 fixed unit, for example, takes tap water through a 4-point internal-tooth fitting and runs at 6 kW with 160 °C steam at 0.8 MPa from an 80-litre SUS304 tank, which suits a busy bay working through a continuous queue.
If cleaning happens across floors, corridors, wards, or several distant parking areas, distance becomes the deciding cost. A machine that must be unplugged, moved, refilled, and re-sited several times an hour loses more to labour time than it saves in equipment price. Hand-pushed models such as the HMW3, with a 50-litre tank and 48 V battery operation, exist for exactly that pattern.
2. Workload Pattern and Continuous Duty
A fixed, mains-powered machine can run continuously because heater output is not limited by a battery. A battery machine is limited by pack capacity and recharge time, so if your workload runs back to back through a shift, either the battery variant needs a spare pack or the mains variant is the correct choice. PowerDe lists its mobile models in both battery-included and battery-free versions, which lets you buy the mains configuration where there is no need for cable-free movement.
The mobile driving-style units (PWD01, PWD02, HMW2) address a related constraint: narrow indoor garages and tight outdoor parking spaces where a larger fixed installation will not fit and where the operator drives the machine between vehicles.
3. Installation Cost and Site Readiness
- Fixed: needs a permanent position, a water connection, and a suitable 220 V supply. Drainage and floor slope matter if work is done on a hard standing. This is a site work cost you pay once.
- Mobile: no installation. Requires storage, a charging point for battery models, and a water point for refills. Costs shift from installation into daily handling time.
Where the site is rented, frequently reorganised, or shared between departments, mobile equipment keeps flexibility that a fixed installation gives up.
4. Cleaning Task Type
Task type, not machine class, should carry most of the decision. Both configurations offer dry-steam and wet-steam modes, and both deliver high-temperature, high-pressure output.
- Fixed suits high-volume, repetitive work: vehicle exterior washing at stations and parking facilities, engine-compartment cleaning, and equipment treated in one place.
- Mobile suits work that must be done where the object sits: hospital beds and medical machinery cleaned in situ, machinery beside a production line, and areas where bringing the object to a wash bay is impractical. The hand-pushed HMW3 is listed for exactly that kind of medical equipment steam cleaning.
5. What to Compare on Paper Before Deciding
Put these five numbers side by side for both candidates and the answer becomes clear:
- Estimated minutes per task, including refills and travel — usually the largest figure.
- Heater input in kW and steam temperature, which set how fast heavy soiling lifts.
- Tank volume against your hourly water use, to see how many refills a shift requires.
- Power source: mains supply versus battery cycle life and replacement cost.
- Site work needed to make the position usable, including water and drainage.
Many Sites Need Both
It is common, and not a compromise, to install one fixed unit at the main wash point and keep one hand-pushed machine for work that cannot be brought to it. PowerDe builds both configurations in the same cleaning equipment series, so operators can train on one control logic across the fleet. Where your workload does not fit a standard configuration — a line layout, a vehicle mix, or an access constraint — PowerDe's engineering team handles customised cleaning solutions, and it is worth settling the fixed-versus-mobile question with them using your actual floor plan and shift pattern.
