When a buyer shortlists PowerDe cleaning equipment, the comparison sheet usually starts with the model number and ends there. That is how a fixed steam cleaning machine such as the PowerDe HW03 gets chosen for the wrong room. This article sets out what a serious product comparison should contain, using the HW03 fixed steam cleaning machine as the worked example, and shows which numbers you should be asking the supplier to put in writing before an order is placed.
Before the spec sheet: define the installation
The HW03 is a stationary unit: L1150 mm × W520 mm × H1030 mm, moved by hand push, fed from a tap-water inlet with a 4-point internal-tooth joint, and running on a 220 V supply with 4.5 kW of semiconductor heating into a 50 L clean water tank. Those figures already tell you which three site questions decide whether the machine fits, and every one of them belongs in the comparison.
- Doorways and floor space. A 1150 mm long chassis has to pass through the access route, not just sit in the room. Measure the narrowest door, any lift, and the turning space, then compare them with the machine footprint.
- Electrical supply. 4.5 kW on a 220 V circuit is not a plug-and-play load in many buildings. Compare the machine requirement against the circuit, socket, and protection available at the actual position.
- Water supply and drainage. The inlet takes tap water through a specific fitting. Note the fitting type, the hose run, and where the run-off will go before comparing options.
Working parameters: compare like with like
The HW03 switches between dry steam and wet steam, and cleaning is done with a high-pressure water gun and nozzle. Dry steam carries less moisture and suits surfaces and areas where a wet floor or standing water is a problem; wet steam brings more water into the process and is generally the mode you reach for on heavy soiling. A comparison should record which modes each candidate offers and what the modes mean in practice for your task.
One gap to catch early: the HW03 page states dry and wet steam modes and a high-pressure water gun, but it does not publish a steam temperature or a steam pressure. Do not fill that gap with an assumption, because an assumed figure silently decides the comparison for you. Send the supplier the same question set for every candidate model and record what each one states. For reference, the sister unit PowerDe HW02 publishes 160° steam temperature and 0.8 MPa vapor pressure, alongside a 6 kW heater and an 80 L SUS304 tank — a set of numbers you can hold against your own requirements.
A useful trick for the comparison sheet: for each parameter write down three columns — what the page says, what the datasheet says, and what is missing. Missing values become the question list you send to every supplier, which is what makes the resulting comparison genuinely comparable rather than a set of marketing pages side by side.
The model naming question
On the HW03 page the parameter table gives the model as PowerDe HW03 (220V), while the overview text refers to PowerDeHMW3 (220V). Separately, the range includes a hand-pushed, battery-powered HMW3 whose table lists a 48 V battery supply rather than 220 V. A comparison that quotes only a model name can therefore end up matching the wrong machine.
Resolve this on paper before you compare anything else: ask the supplier to confirm the full model designation and the working voltage on your quotation, and make sure the same designation appears on the proforma invoice and in the manual. Where a fixed mains-powered unit and a battery-powered unit share a model number across the range, put that question to the supplier rather than deciding it yourself.
Safety design: list it, and verify it against your site
The HW03 page states leakage protection, short-circuit protection, high-temperature protection, high-voltage protection, water-shortage protection and high-voltage-explosion protection. Recording the protection functions each machine offers is worth the space on the sheet, because the list tells you what the equipment is designed to respond to.
Then compare those functions against your installation conditions: wet floors and washdown areas, shared electrical distribution, water supply that can fail mid-cycle, and the surface temperatures your operators can reach. Protection features support safe operation; they do not replace the risk assessment, procedures, and training your own site needs, and a good supplier will discuss the installation requirements with you rather than sell on features alone.
Application fit: does the task match the machine?
The HW03 is described as being used for cleaning and disinfecting hospital beds and medical machinery. If your requirement is vehicle exterior cleaning at a forecourt or parking area, engine compartments, or interior work, PowerDe's vehicle-facing fixed model HW02 is the machine described for that duty. If cleaning has to follow you around a building or into tight parking positions rather than stay where it is installed, the range also covers mobile units: the driving-style PWD01, PWD02 and HMW2, and the hand-pushed HMW3.
Put your own task on the comparison sheet in concrete terms — the surfaces, the soil, the room, the shift pattern — and then check which machine is documented for that duty. Where the fit is not obvious from the product page, ask. Customized steam cleaning equipment is part of what Shenzhen PowerDe Automation Precision Equipment offers, so a specification discussion is a normal step, not an exception.
Accessories, consumables and life-cycle cost
Compare what comes with the machine: the nozzle and gun set in the HW03 configuration, plus lance, hose, brush and applicator items you expect to use. Ask for the accessory list explicitly and record it; what is included is often where two apparently identical machines differ most.
Then price the machine over its working life rather than at purchase. Seals, nozzles and hoses are wear items; the heater in the HW03 is a semiconductor (PTC) type; a 50 L tank sets how often the machine is refilled and how long a task takes. Water and detergent use, energy per shift, and the availability of service and spare parts from the manufacturer all belong on the sheet next to the purchase price.
Supplier capability and documentation
PowerDe presents itself as an intelligent cleaning equipment manufacturer based in Shenzhen, with in-house R&D, manufacturing and engineering services behind the cleaning range. For a comparison that matters in practical terms: the manufacturer, rather than a reseller, is the party that answers questions about the fitting size, the control arrangement, a tank material choice, or a modification for a particular site.
Ask for documentation and record what each supplier provides: the parameter table for the exact model, drawings with dimensions and connection points, the manual language and format, the warranty terms, the spare parts list with lead times, and a wiring diagram your electrician can work from. A supplier that supplies these without being chased twice is usually the one that will still answer after delivery.
Total cost, lead time and after-sales
Put landed cost on the sheet: the machine, accessories, shipping and duties, the electrical or plumbing work the installation needs, and commissioning. Then record the lead time to dispatch, and how support works — the channel, the language, response expectations, and how a failed part is replaced. A lower purchase price that arrives with an unclear spare parts route usually costs more in the first year than a fully documented machine.
A practical scoring method for procurement teams
Score the candidates in writing, with each criterion carrying the weight your operation gives it: site fit, modes and performance parameters, application evidence, safety design, accessories and consumables, documentation, support, and life-cycle cost. Give a criterion a score only where the evidence exists in writing, and mark gaps as gaps.
Ask the questions on the HW03 as an example: what are the steam temperature and steam pressure, what is the water use, and what is the runtime or refill cycle for a defined task. Send the identical list to every supplier, and score what comes back. This protects you against two machines with the same headline model number but different configurations arriving on site as a surprise.
Checklist before you request a quotation
- Access route measured: door widths, lift, turning space, machine footprint (HW03: L1150 × W520 × H1030 mm).
- Supply confirmed: 220 V circuit and protection, tap-water inlet with 4-point internal-tooth joint, drainage point.
- Model designation and working voltage confirmed in writing by the manufacturer.
- Missing parameters listed and put to every supplier as one question set.
- Accessories and consumables itemised, with prices and replacement intervals.
- Documentation requested: parameter table, drawings, manual, warranty, spare parts list, wiring diagram.
- One cleaning task defined so every candidate is evaluated on the same job.
FAQ
What is the difference between the HW03 and the HW02?
both fixed, mains-powered, hand-pushed units with dry-steam and wet-steam modes and hand-push movement. The HW02 page describes vehicle exterior cleaning at gas stations and parking lots, engine-compartment cleaning and interior work, with an overall height of 1,200 mm including handles, 6 kW heating power, 160° steam temperature, 0.8 MPa vapor pressure and an 80 L SUS304 tank. The HW03 page is written around cleaning and disinfecting hospital beds and medical machinery, with an overall height of 1030 mm, 4.5 kW heating power and a 50 L tank, and it does not publish steam temperature or pressure.
Where do I get the parameters the product page does not show?
From the manufacturer, in writing, for the exact model. Steam temperature and pressure, water consumption, runtime, weight, hose and wand lengths, and the accessory list are all reasonable questions. Record the answers on the comparison sheet, and keep the same question set for every supplier so the candidates stay comparable.
Can PowerDe build a fixed machine to my specification?
PowerDe lists engineering services and customized configurations alongside its standard equipment, so a specification discussion before ordering is normal practice. Bring your installation measurements, your duty cycle, and the list of questions you have already put to other suppliers.
If you are comparing the HW03 for a specific installation, send the site measurements and the task description to PowerDe and get the parameter table confirmed on the quotation. The comparison is only as good as the numbers in it.
