What a fixed steam machine costs is decided where it is bolted down
A fixed machine is a piece of installed plant, not a cart that can be moved to a job. Its cost of ownership starts with the installation itself: the pad or plinth it sits on, the water supply that has to reach it, the drain or channel that receives the run-off, the electrical connection at the point of work, and the hose run and working radius that follow from the one position it is allowed to occupy. Every one of those is a site cost that a mobile machine either avoids or pays for task by task instead.
It also sets a permanent limit. Everything outside the hose radius has to be brought into the machine, or cleaned another way. A buyer who prices the machine without pricing the bay it lives in will find the difference reappearing later as extra handling, extra rinse water carried across the floor, or a second machine.
The figures the PowerDe HW02 page already publishes
The product page for Fixed Steam Cleaning Machine PowerDe HW02 publishes a working voltage of 220 V, a heating power of 6 kW, a steam temperature of 160 degrees as the page writes it, a vapour pressure of 0.8 MPa, an 80 L tank in SUS304, an overall size of 1,200 by 800 by 1,200 mm including handles, a tap-water inlet with a 4-point internal-tooth joint in 1/2 inch, dry and wet steam switching, and a vacuum function. Those rows are the starting point for a cost model, not the model itself.
Three cautions before any of them are used as cost inputs. A steam temperature on a generator page is the temperature at the generator, not at the nozzle after the hose run, and the nozzle figure is what loosens a deposit. A tank volume is a volume, not a working time; how long the machine runs before it needs refilling depends on what it consumes each hour. And a power rating is a rating, not an energy bill; what a shift costs depends on how many hours the heater is actually drawing that load.
The site also publishes scenarios for this machine, vehicle exterior cleaning at stations and parking areas, interior work, and engine-compartment work. It does not publish a line-cleaning rate, a kitchen rate, or a per-square-metre figure. Any rate in a cost model therefore has to be measured on the buyer's own surfaces.
Factor one: installation and utilities at the point of work
Ask what the installation requires, in writing, before the price is compared with anything. The rows that matter: the electrical supply at the location, the water inlet arrangement and whether the site tap matches the inlet fitting, the drain each wash bay discharges into, the floor fall and whether water stands after a pass, and the clearance the machine needs including handles.
These are not incidental. A fixed unit whose drain is twenty metres away costs that distance in pipework once and in labour on every cycle after. A fixed unit whose inlet does not match the site tap costs an adapter and a leaking joint. Getting these answered as rows for the exact machine quoted, rather than as a general catalogue question, is what keeps the first-year number honest.
Factor two: energy and water per cycle, not per hour on the label
Energy on a steam machine is dominated by heating. The honest way to cost it is to time a real cycle, note how long the heater is drawing during that cycle, and multiply by the local tariff. That produces a figure per cycle, which is the unit a site can compare against a per-cycle price of a hand wash or an outsourced clean.
Water is the second running cost and the one most often left out. The choice between the dry and wet steam modes is a water-volume and run-off decision rather than a stronger or weaker one, and it changes both the water drawn and the water that has to be collected and disposed of. Where the site is charged for trade effluent, the run-off volume belongs in the model alongside the meter reading.
Factor three: cycle time and the labour around the pass
In most cleaning budgets labour is larger than energy and water combined, so the cycle-time blocks decide the ranking of options. A fixed-machine cycle is not the pass. It is six blocks: isolation and the cool-down or temperature record the surface needs before steam is applied; shielding of anything the pass must not touch; the pass itself; drying and re-check; restoring what was shielded; and hand-back to production or to the customer.
Two measured runs, with the number taken from the second, are the only credible starting point for a cycle-time figure that a finance reviewer will accept. The first run contains the learning. A model built on the first run understates nothing but is not credible to a finance reviewer, and a model built on an assumed rate will not survive the first month of operation.
Factor four: consumables, wands, hoses and wear parts
The accessory chain is where a fixed machine quietly becomes expensive or cheap. A wand, brush, jet nozzle or extension that reaches the surface without a ladder shortens the pass and removes a permit-to-work; one that does not reach adds handling time to every cycle. The reach, containment, dwell and finish judgements are made by the accessory chain, and a chain that fails at any point distorts the reading of the machine itself.
Ask the supplier for the wear list for this machine: which nozzles, seals, hoses and brush faces are consumable, what they cost, and what a replacement costs in downtime. A machine with a lower purchase price and a high wear-part bill is not the cheaper option over five years, and the wear list is what shows that before the order.
Factor five: service, spares and the downtime window
A fixed machine takes its bay out of use when it is down. The cost question is not whether it needs service but what the response looks like in practice: who attends, how quickly, whether the parts are held locally or shipped, whether a common fault can be diagnosed without opening the cabinet, and what the site is expected to do in the meantime. A back-up method, even a slow one, is a cost item, because it is labour that exists only to cover the failure.
The machine's own protection features belong in this section as well. The HW02 listing names leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection. Treat them as an operating list to be shown on the exact unit and understood by the operator, not as a reason to assume faults will not occur.
Factor six: the cost of getting the surface wrong
The most expensive line in a steam-cleaning budget is a damaged surface. Steam on a joint that was already soft can wash it out; on a coating that is uncured or re-coated it can lift it; on an electrical enclosure or an instrument tail it can do damage that never shows up until the equipment fails. Exclusions are not a paragraph of caution, they are a cost control, and each exclusion should come with a named replacement method and the trade that method carries.
Condition before method is the rule that keeps this line small. Joints, seals, bearing faces, enclosures and coatings are inspected and recorded before any wet pass is proposed, and the surface that fails that inspection goes to a different process at a different price.
Factor seven: training, consistency and rework
Two operators on the same machine can produce cycle times and results that differ by a wide margin, and rework is the visible cost of that difference. A one-page standard per surface group, trained at the machine, with the owner, frequency, method and defect route on each row, is what converts a machine purchase into a repeatable cost.
The training cost is usually small and the omission is not. Without a standard the buyer has bought a machine, not a process, and the ownership figure will be driven by how each shift happens to work.
Factor eight: disposal, run-off and compliance
The water that leaves the surface carries whatever was on it: grease, swarf, detergent residue, and in food or medical settings the material the site has to control. Where that water needs to be intercepted, separated or discharged under a consent, the route and the treatment are a recurring cost that the machine choice changes.
High-temperature steam is positioned on this site as a way of working that reduces reliance on chemical detergents. In a cost model that is a reduction in a purchased consumable and, in some sites, a reduction in the load going to the drain. It is not a licence to skip the run-off decision.
Factor nine: utilisation and idle capacity
A fixed machine bought for one bay is paid for whether that bay is used every shift or once a week. Utilisation is the factor that most often turns an apparently cheap machine into an expensive one, because the whole installed cost is spread over a small number of cycles. Before ordering, write the schedule: which surfaces, how often, and what the machine is doing between them.
If the schedule is thin, the comparison is not with a competing machine but with the existing method plus a hired or outsourced solution for the rare job. If the schedule is full, a fixed machine earns its installation cost back through shorter setup and a repeatable cycle.
Factor ten: flexibility and what happens when the scope changes
Sites change. A new line, a different vehicle mix, a bay moved twenty metres, or a new surface type all change what the machine has to reach. A fixed unit absorbs those changes through a second position, a longer hose run, or an extra accessory; each is a cost with a trade against it. A buyer who expects the scope to move should price that change path at the same time as the machine.
PowerDe also describes customised configurations and engineering support through its customized steam cleaning equipment route, and the wider PowerDe cleaning equipment range covers both fixed and mobile machines. Where a configuration has to be built around a site rather than chosen from a page, the configuration discussion belongs in the cost comparison, because it is where the flexibility cost is decided.
How to measure the ownership figure before ordering
Run one bounded trial on a single surface group. Tape a patch with written boundaries, photograph it as it stands, write the stop conditions before any steam is applied, and record energy draw, water drawn, cycle time for each of the six blocks, consumables used and rework. Take the timing from the second run, inspect again the next day after a full shift, and keep the photographs.
That record supports only the surface and accessory combination it was taken on. It does not extrapolate to the rest of the site, and any figure that does extrapolate should be marked as an assumption rather than presented as a measured cost.
A written data list for the exact unit quoted
Ask for the rows, not the marketing page: hourly water consumption at the tested mode, steam temperature and pressure at the nozzle rather than at the generator, run time behind the published tank volume, hose and wand lengths and the working radius from one fixed position, the wear-part list with prices and replacement intervals, the service response and what is held in stock, and the installation requirements for supply, drain and electrical connection. Where the published table is silent, the silence is the question.
Any figure that is given for the model in general rather than the unit quoted should be treated as a starting value for a trial, not as a cost input.
What a cost comparison of this kind does not prove
A total-cost figure built from one site proves nothing about another site. It does not prove the machine suits a surface that was not in the trial, it does not prove a cycle time for a different class of soiling, and it does not settle the fixed-versus-mobile question for a site whose work moves between many locations. What it does prove is narrow and useful: that on these surfaces, with this accessory chain, in this bay, the ownership figure is this number and not the one on the quotation.
For a fixed machine, that figure is mostly decided by the site. The published rows are the input; the bay, the schedule, the accessory chain, the exclusions and the standard are the cost.
