Operators comparing fixed and mobile PowerDe steam cleaning machine options usually start with the same question: where does the cleaning actually take place? A pit, a wash bay, a forecourt, a tight underground garage or a fleet yard each makes a different trade between installed power, water supply, reach and labour. The comparison below follows the specifications published on the PowerDe product pages, so the differences can be traced back to the machines themselves rather than to general assumptions.
What the fixed units provide
The fixed steam cleaning machine line is built around mains power and a plumbed water inlet. The PowerDe HW02 is listed at 220 V with 6 kW of heating power, a steam temperature of 160°, a vapour pressure of 0.8 MPa and an 80 L SUS304 tank, with a tap-water inlet on a 4-point internal-tooth joint (1/2 inch). Dry steam, wet steam and a vacuum cleaner are on the same machine, which is how the HW02 page describes exterior vehicle cleaning at gas stations and parking lots, interior vacuuming and disinfection, and engine-compartment cleaning.
Because the unit is installed rather than carried, it can hold a higher heating load and a larger tank than a portable unit, and the water comes from the mains instead of a bottle that someone refills between jobs. The HW02 page also lists leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection — the page groups six items, and the wording is worth confirming with the manufacturer, since earlier notes recorded five.
A fixed machine only earns its cost where there is a prepared position for it: a bay with the right supply, drainage, and a workflow that brings vehicles or equipment to it. Its footprint is part of the decision as well; the HW02 is listed at 1,200 × 800 × 1,200 mm including handles.
What the mobile units provide
The driving-style and hand-pushed models trade installed power for access. The PowerDe PWD01, PWD02 and HMW2 are described as mobile active-water cleaning machines offering dry-steam, wet-steam and hot-water modes, and the listings place them in indoor garages and narrow outdoor parking spaces — spaces where an installed bay is impossible and a fixed unit cannot reach. Each model is listed in a variant with a battery and a variant without one, which matters when the machine has to run where no supply is nearby.
The hand-pushed PowerDe HMW3 is listed for cleaning and disinfecting hospital beds and medical machinery, with dry- and wet-steam modes. Its detail page records heating power of 4.5 kW on a PTC semiconductor heater, a 50 L clean-water tank, a 48 V battery working supply, hand-push movement, dimensions of L1150 × W520 × H1030 mm, and a tap-water inlet on a 4-point internal-tooth fitting. Steam temperature, steam pressure, battery capacity, runtime and weight are not published on that page, so they belong in the supplier conversation rather than in a specification sheet.
Mobile does not mean low pressure. The HMW3 is described as a high-temperature, high-pressure machine; what changes with mobility is how long that output can be sustained before someone recharges or refills, and how much heating power the on-board supply can carry.
Five specification lines to compare
- Power source and supply. The HW02 runs on 220 V with a plumbed tap-water inlet. The HMW3 works on a 48 V battery, and the driving-style models are offered with or without a battery. Whatever you compare, write down the supply that exists at the work position before comparing the machine.
- Heating power. The published figures are 6 kW for the fixed HW02 and 4.5 kW for the hand-pushed HMW3. The gap between those two numbers is roughly the gap between a plumbed position and a carried unit.
- Water holding. 80 L SUS304 on the HW02 against a 50 L clean-water tank on the HMW3. With a mains inlet, tank size mainly buffers demand; on a self-contained unit it sets how much work happens per refill.
- Mode coverage. The HW02 combines dry steam, wet steam and vacuum. The driving-style models add a hot-water mode alongside dry and wet steam. A site needing vacuum and steam in one pass has to check whether the mobile option carries both.
- Documented duty. The HW02 page describes vehicles, parking facilities, engine compartments and medical equipment. The HMW3 listing names hospital beds and medical machinery. Match your own task against the duty each page actually describes.
Where the published figures are not published — steam temperature and pressure on the mobile models, battery capacity, runtime, weight, accessory list — treat them as open questions. Contact PowerDe for those figures and confirm the model naming as well, since the site has used inconsistent model wording.
Worked comparison: forecourt against underground bay
At a forecourt with a wash position, a water supply and power at the pad, the HW02 fits the job the way its own page describes it: exterior cleaning of vehicles at gas stations and parking lots, with interior vacuuming and disinfection on the same machine and a mains supply that removes refilling from the cycle.
In an underground garage with narrow bays and no prepared wash position, the driving-style machines are what the listings are written for. A battery-equipped variant lets an operator move from bay to bay without a cable run, and the hot-water mode handles what steam alone does not on a soiled floor or wheel arch. The fixed unit would sit idle in that setting; the mobile unit would need a charge and refill routine that is planned rather than discovered mid-shift.
Many operators end up with both: an installed unit at the bay for volume work, and a mobile unit for the positions the bay cannot reach. That combination is also how a site keeps a single supplier for the consumables, accessories and service path.
Questions to put to the supplier
- Which model covers the exact task in my site drawings — vehicles, engine compartments, medical equipment, floors?
- What are the steam temperature and pressure figures for the mobile model I am quoting, since they are absent from the product page?
- On a battery variant, what runtime does the machine hold under continuous steam, and what charger and charge time come with it?
- What inlet, drainage and electrical provision does the fixed unit need at the position, and what protection functions are fitted?
- Which accessories are included, and what is the service and spare-parts route for the model number on the quote?
Compare fixed and mobile on power source, heating power, water holding, mode coverage and documented duty, and the choice follows the site instead of the brochure.
