There is a world of difference between the plastic jet wash that lives in the shed for washing the car on a Sunday and the machine a builder, groundworker or fleet washer leans on every single day. A domestic Karcher will clean a patio, but run it hard for a few weeks on a site and the pump gives up. A proper trade pressure washer is built around a brass or alloy pump head, a decent motor and hose fittings that survive being dragged across muck and gravel, and it will still be going in five years when the cheap one is landfill.
This guide is for UK trades buying a pressure washer to earn its keep in 2026 – block pavers, render cleaners, plant hire yards, groundworkers hosing off diggers, and anyone washing vans and plant daily. Every price is an approximate UK street price including VAT and moves with promotions, so treat them as a guide rather than gospel. We stick to cold-water machines here because that is what most trades actually need; hot-water and steam units are a different, dearer conversation.
Our quick verdict
For most trades wanting one machine that just works and keeps working, the Karcher HD 5/11 P is the sensible buy at around GBP 380-430. It is the entry point to Karcher’s genuinely professional HD range, it has the parts and service network behind it, and it will shrug off daily use in a way no K-series domestic machine will.
If you want the best pump money can buy and you are washing vehicles or plant every day, the Kranzle range – starting around GBP 795 for the HD 7/122 – is the one detailers and serious operators swear by, with a 20-year working life if you look after it. And if you are a groundworker or plant yard that batters kit and wants British-built toughness with a long lance and big flow, look hard at V-TUF. For occasional trade cleaning on a tighter budget, the Nilfisk MC 3C gives you a metal pump and real flow for around GBP 300-350.
How to choose a trade pressure washer
Bar vs flow rate – flow does the work
Everyone fixates on pressure – the bar figure – but for trade cleaning it is the flow rate, measured in litres per minute or litres per hour, that shifts dirt and rinses it away. A machine with 500-600 litres per hour and 130 bar will clean a yard far faster than a high-bar, low-flow domestic unit. High pressure blasts a small spot; high flow washes the whole surface. For daily work you want both, but do not ignore flow to chase a big bar number.
Pump type and duty cycle
This is the single biggest thing that separates a trade machine from a toy. Domestic washers use a wobble-plate pump with plastic or composite parts and a short duty cycle – run them continuously and they cook. Trade machines use axial or, better, three-piston crankshaft pumps with a brass or alloy head, built to run for hours. If the spec sheet does not mention the pump, that tells you what you need to know. A brass pump head is the mark of a machine built to last.
Motor and power supply
Most portable trade machines run on a standard 240V 13A plug, which is convenient but caps the power. Bigger yard machines run on 415V three-phase or are petrol-driven for off-grid work. For a van-based trade, a 240V single-phase HD machine is almost always the right call – just be aware that on a long extension lead the voltage drop can trip it, so keep leads short and heavy-gauge.
Build, hose and fittings
Look at the hose length and quality, the reel if it has one, and whether the trigger gun and lance feel solid. A steel-braided hose survives being dragged over rubble; a cheap PVC one splits. Quick-release fittings, a decent 10-15m hose and a professional trigger gun with a replaceable lance make daily work far less painful. On-board hose reels are worth the extra on a machine you move around a lot.
Cold vs hot water
Cold-water machines cover the vast majority of trade cleaning – render, brick, block paving, plant, vans, yards. Hot-water and steam units melt through grease, oil and traffic film far faster, which is why vehicle fleets and workshops buy them, but they cost two to three times as much and need diesel or gas to fire the burner. Unless you are specifically shifting oil and grease daily, cold water is the trade default and the sensible spend.
The best trade pressure washers at a glance
Prices are approximate UK street prices for 2026 and vary by retailer, spec and promotion. All figures are for cold-water, single-phase machines unless noted.
| Machine | Type | Flow / pressure | Best for | Approx. price |
| Karcher HD 5/11 P | 240V cold | 500 l/h / 110 bar | Best all-round trade | GBP 380-430 |
| Nilfisk MC 3C | 240V cold | 540 l/h / 140 bar | Best value trade | GBP 300-350 |
| Karcher HD 6/13 C Plus | 240V cold | 560 l/h / 130 bar | Bigger flow, hose reel | GBP 550-620 |
| Kranzle HD 7/122 | 240V cold | 500 l/h / 120 bar | Best pump / longevity | GBP 795-900 |
| V-TUF 240V industrial | 240V cold | 600-780 l/h | Groundwork / plant yards | GBP 500-800 |
| Karcher Pro HD 6/15 petrol | Petrol cold | 560 l/h / 200 bar | Off-grid / no mains | GBP 900-1,050 |
The picks in detail
Best all-round trade – Karcher HD 5/11 P
The HD 5/11 P is the machine most trades should buy first. It is the gateway to Karcher’s professional HD line, which is a genuinely different animal to the yellow K-series you see in Homebase – a proper pump, metal fittings and a service network that means you can get parts and repairs anywhere in the country. At around GBP 380-430 it is not cheap next to a domestic washer, but it is built to run daily and it holds its value. For a builder, roofer or landscaper who wants one reliable machine, this is it.
Best value trade – Nilfisk MC 3C
Nilfisk’s MC range is aimed squarely at tradesmen, small garages and farms, and the 3C gives you a metal pump head and strong flow for around GBP 300-350 – noticeably less than the equivalent Karcher. Nilfisk machines have long punched above their weight on raw specs for the money, and the MC 3C is no exception. The trade-off is a smaller accessory and parts network than Karcher, so if you value being able to walk into any dealer for a repair, weigh that up. But for the price, it is a lot of machine.
Best bigger-flow portable – Karcher HD 6/13 C Plus
Step up from the 5/11 and the HD 6/13 C Plus gives you more flow, more pressure and, in the Plus versions, an on-board hose reel that saves your back and your hose. At GBP 550-620 it is the machine for a trade doing bigger areas – render cleaning, larger yards, block paving by the day – where the extra flow genuinely speeds the job. If you are cleaning surfaces for a living rather than occasionally, the bigger Karcher earns the difference.
Best pump and longevity – Kranzle HD 7/122
Kranzle is the name serious detailers and daily operators reach for. German-built since 1974 around a superb brass three-piston pump, a well-kept Kranzle will run for two decades. Prices start around GBP 795 for the HD 7/122 and climb steeply for the TST reel models, so it is a real investment – but if you wash vehicles, plant or property every day and downtime costs you money, buying the best pump on the market once beats replacing a cheaper machine three times. The build quality is in a different league.
Best for groundwork and plant yards – V-TUF
V-TUF build proper industrial cold-water machines in the UK aimed at exactly the muck a groundworker, plant hire yard or agricultural operator throws at them. You get big flow, long lances and hose reels, and a machine designed to be dragged around a filthy site rather than babied. Prices span roughly GBP 500-800 for the 240V electric-driven units depending on flow and spec. If you are hosing diggers, dumpers and yards rather than washing vans, this is the sort of machine to look at.
Best off-grid – Karcher Pro HD 6/15 petrol
When there is no mains – new-build plots, remote groundwork, agricultural work – a petrol machine is the answer. Karcher’s Pro HD 6/15 pairs a 196cc engine with a proper pump to give you 200 bar and strong flow anywhere, for around GBP 900-1,050. It is heavier, noisier and needs fuel and servicing like any small engine, but for off-grid trade cleaning it removes the extension-lead problem entirely. If half your work is somewhere without a socket, budget for one.
Looking after your pressure washer
A trade pressure washer lives or dies on how you treat the pump and the water going into it. Always use a clean water supply with the inlet filter fitted and clean – grit through the pump is the fastest way to wreck it. Never run the machine dry, even for a few seconds, and never leave it in the van over a hard frost with water in the pump; a frozen pump cracks and that is a repair bill. In winter, either store it somewhere frost-free or run pump antifreeze through it. Flush clean water through after using any detergent, coil the hose without kinks, and keep the lance nozzle clear – a blocked or worn nozzle wrecks your flow and makes the pump work harder than it should. Descale annually if you are in a hard-water area.
Frequently asked questions
Is a trade pressure washer really worth it over a cheap domestic one?
If you use it for work, yes, without question. Domestic machines are built for occasional light use and their pumps are not designed to run for hours or day after day. A trade machine with a brass or alloy pump will outlast three or four domestic units and won’t leave you stranded mid-job. Buy once, buy right.
Do I need hot water?
For most trade cleaning, no. Cold water shifts render, brick, block paving, mud and general grime perfectly well. Hot water and steam only earn their keep – and their much higher price – if you are removing grease, oil or heavy traffic film daily, which is why vehicle workshops and fleet washers buy them. Start with cold unless your work specifically calls for hot.
Karcher or Nilfisk for trade?
Both are solid. Karcher’s professional HD range has the edge on parts availability, accessories and nationwide service, which matters when a machine goes down mid-job. Nilfisk typically gives you more flow and pressure per pound and metal pump internals even lower down the range. If uptime and service matter most, Karcher; if raw value matters most, Nilfisk. We cover this head-to-head in our dedicated Karcher vs Nilfisk comparison.
What about petrol machines?
Only buy petrol if you genuinely work off-grid – new-build plots, remote groundwork, farms. Petrol gives you full power with no mains and no extension-lead voltage drop, but it is heavier, noisier, needs fuel and servicing, and you cannot run it indoors. For anyone working where there is a socket, a 240V electric machine is simpler, cheaper and quieter.
