Pressure Washered Choose the right pressure washer
Use it better. Keep it running
Straightforward guidance on pressure washers, hoses, pumps, nozzles, accessories, and cleaning solutions — based on real experience around the equipment.
Choose by the job, not just the machine
Start with the surface you need to clean, then match the pressure, water flow, nozzle, detergent, and accessories to the work.
Cars and vehicles
Find suitable machines and techniques for cars, motorcycles, boats, bikes, trucks, and detailing work without using unnecessary pressure on paint, trim, or delicate finishes.
Concrete, driveways and patios
Match power, surface cleaners, detergents, and nozzles to concrete, asphalt, paving, stone, sidewalks, patios, and larger driveway jobs.
Decks, fences and wood
Learn how to clean timber, composite decking, fences, teak, and other wood surfaces while reducing the risk of gouging, splintering, or stripping more material than intended.
House and exterior
Choose equipment and cleaning methods for siding, stucco, windows, roofs, exterior walls, mobile homes, and preparation before painting.
The machine is only one part of the setup
A capable pressure washer can still be frustrating when the hose is too short, the pump is poorly matched, or the wrong gun or attachment is fitted. Every part of the system needs to suit both the machine and the job.
It is easy to focus on PSI and engine size while overlooking the components that determine how comfortable, reliable, and useful the machine will be in practice. A restricted hose, unsuitable fitting, worn pump, or poorly chosen nozzle can hold back an otherwise capable pressure washer.
Build a setup that works as one complete system
Browse specific guides for hoses, pumps, engines, guns, wands, attachments, replacement parts, and maintenance products.
Hoses and reels
8 guidesChoose suitable hose materials, lengths, pressure ratings, flexibility, connections, and storage systems.
Pumps, engines and oil
8 guidesMatch pumps, engines, replacement parts, and lubricants to the required pressure, flow, workload, and mounting system.
Guns and wands
8 guidesImprove reach, control, comfort, foam application, and access to high or difficult areas.
Attachments and tools
10 guidesAdapt the machine for vehicles, concrete, driveways, gutters, drains, abrasive cleaning, and large flat surfaces.
A better setup often improves the result more than simply buying a more powerful machine
Spend for the job not for the biggest number
A higher price does not automatically make a pressure washer more suitable for your work. Compare the type of machine, expected workload, included equipment, and long-term value before deciding what to buy.
Budget and affordable
6 guidesFind lower-cost machines and accessories for home cleaning, cars, occasional use, and simpler workloads.
Value for money
6 guidesCompare machines that balance useful performance, included equipment, build quality, and purchase price.
Pressure washer deals
6 guidesBrowse deal-focused guides for electric, gas, residential, seasonal, and selected Karcher pressure washers.
Buy enough machine for the work without paying for power and equipment you may never use
Pressure washer questions I hear most often
Buying or troubleshooting a pressure washer often comes down to a detail that product listings do not explain clearly. I have answered twenty of the most common questions below.
Your own situation may be more specific. You can always write to me at [email protected] with questions about choosing a machine, matching accessories, or working out what kind of setup is suitable for the job.
Twenty practical answers before you choose or use a machine
Open any question for a straightforward answer based on the job, equipment, surface, and likely workload.
01 Should I buy an electric or gas pressure washer?
Electric machines are usually quieter, easier to maintain, and well suited to cars, patios, siding, and regular home use. Gas machines are better when you need more output, longer working periods, or freedom from an electrical outlet.
02 How much PSI do I actually need?
The correct pressure depends on the surface. Cars, painted siding, and wood need more control than concrete. Do not choose by PSI alone; water flow, nozzle angle, distance, and technique are just as important.
03 Is GPM more important than PSI?
Both matter, but GPM is often overlooked. PSI helps loosen dirt, while water flow carries it away. For large areas, useful water flow can improve cleaning speed more than a small increase in headline pressure.
04 Can a pressure washer damage house siding?
Yes. Excessive pressure, a narrow nozzle, or working too close can mark siding and force water behind it. Start with a wider spray, keep a sensible distance, and let an appropriate cleaner do part of the work.
05 Is pressure washing safe for car paint?
It can be safe when the machine, nozzle, and distance are appropriate. Avoid concentrated spray near damaged paint, trim, seals, sensors, and badges. More pressure is not the goal when washing a vehicle.
06 Do I need a hot-water pressure washer?
Hot water is particularly useful for grease, oil, commercial kitchens, workshops, machinery, and some industrial cleaning. For ordinary dirt around a home, a cold-water machine with the right detergent is usually enough.
07 Why has my pressure washer lost pressure?
Common causes include a restricted water supply, blocked nozzle, air in the system, damaged hose, leaking fitting, worn seals, or pump problems. Check the simple supply and nozzle issues before assuming the pump has failed.
08 Can I connect a pressure washer to a normal garden hose?
Most home machines are designed for a normal garden-hose supply, but the hose and tap must provide enough water. A kinked, narrow, damaged, or excessively long supply hose can starve the pump.
09 How long should my pressure washer hose be?
Choose enough length to reach the working area without constantly moving the machine. Avoid buying far more hose than needed, and make sure its diameter, fittings, and pressure rating are suitable for the washer.
10 Which pressure washer nozzle should I use?
Begin with a wider spray and move narrower only when the surface and dirt require it. A narrow nozzle concentrates the pressure and increases the risk of damage. Test an inconspicuous area first.
11 Can I use bleach in a pressure washer?
Only when the machine, injector, seals, hose, surface, and application method are compatible with it. Never assume bleach can safely pass through the pump. Follow the equipment and chemical instructions carefully.
12 Do I really need pressure washer detergent?
Not for every job, but the correct cleaner can loosen organic growth, road film, grease, and other contamination before rinsing. That often reduces the amount of pressure and repeated passes required.
13 Why does the pressure washer pump get hot?
Pumps can heat rapidly when the machine runs in bypass with the trigger released. Poor water supply, low oil, internal wear, or extended operation can also create heat. Do not leave the machine running unused for long periods.
14 Can I run a pressure washer without water?
No. Running the pump dry can damage seals and internal components very quickly. Connect the supply, open the tap, and remove trapped air before starting the machine.
15 How often should pressure washer pump oil be changed?
Follow the schedule for the specific pump. Serviceable pumps may require an early first change and regular changes based on hours of use. Many small residential pumps are sealed and do not have user-changeable oil.
16 What size surface cleaner should I buy?
The cleaner must match the machine’s pressure and water flow. An oversized surface cleaner can spin poorly and clean unevenly. A smaller correctly matched unit often performs better than a larger attachment the machine cannot supply.
17 Why does my pressure washer pulse or surge?
Pulsing can come from insufficient water, trapped air, a blocked nozzle or filter, leaks, a sticking unloader valve, or worn pump components. Begin by checking the water supply and cleaning the nozzle.
18 Should I repair the pump or replace it?
It depends on the pump design, parts availability, machine value, and extent of the damage. A quality serviceable pump may justify repair. Replacing a small sealed residential pump can be more practical.
19 How should I store a pressure washer for winter?
Remove water from the system, protect the pump from freezing, treat the fuel when applicable, disconnect accessories, and store the machine somewhere dry. Freezing water can crack pumps, hoses, and fittings.
20 What should I check before buying a pressure washer?
Start with the surfaces, frequency of use, area size, available water and power, required reach, storage, noise limits, and accessories. Then compare pressure, flow, pump type, warranty, parts availability, and total setup cost.
The right nozzle changes more than the pressure
The nozzle determines how concentrated the water is, how quickly the surface is cleaned, and how easily the wrong technique can cause damage. Match the spray pattern to the surface rather than using the narrowest tip available.
Nozzle types
6 guidesCompare adjustable, rotary, turbo, general-purpose, and hose-mounted nozzle designs.
Nozzles by surface
6 guidesMatch the tip to concrete, driveways, decks, siding, painted surfaces, and wood fences.
Car and foam setups
6 guidesBuild a controlled vehicle-washing setup with suitable tips, foam guns, cannons, lances, and foamers.
Foam cannons and lances
6 guidesCompare foam equipment for electric, gas, Harbor Freight, and complete pressure-washer combinations.
Start with a wider spray and move narrower only when the surface requires it Control is usually more useful than maximum concentration
Build the setup around the work you plan to take on
Equipment for occasional home use is chosen differently from a setup expected to earn money every week.
A business machine needs more than an impressive pressure rating. It needs to work consistently, travel safely, reach the cleaning area, connect to the available water supply, and remain practical to service when something wears out.
I recommend building the system backward from the jobs you intend to accept. Consider the surfaces, travel distance, water access, working hours, chemicals, accessories, transport, and likely downtime before deciding how much machine to buy.
Equipment, commercial jobs and mobile working setups
Browse practical guides for starting a pressure washing business, choosing a vehicle, building a mobile setup, and handling specific commercial cleaning work.
Starting and running a business
6 guidesChoose equipment for a new business, small operation, car wash, detailing service, or regular paid cleaning work.
Commercial cleaning jobs
6 guidesMatch the equipment and cleaning products to commercial buildings, grease, graffiti, drainage work, jetting, and heat pumps.
Mobile setup and working conditions
6 guidesPlan the vehicle, van, weather protection, working distance, water delivery, and equipment for mobile services.
A professional setup should save time, reduce downtime, and support the jobs you accept not simply carry the highest pressure rating
Compare equipment by brand and intended use
A familiar name can make a pressure washer easier to shortlist, but the badge alone does not tell you whether the machine suits your work. Compare the model, pump, water flow, accessories, service options, and available replacement parts.
Karcher
6 guidesChoose Karcher equipment for home cleaning, vehicles, driveways, decking, patios, and compatible replacement hoses.
Greenworks, Ryobi and Sun Joe
6 guidesCompare popular electric brands alongside compatible soaps, vehicle cleaning options, and surface-cleaning attachments.
Other brands
6 guidesBrowse machines and accessories from DeWalt, Generac, Nilfisk, Harbor Freight, Menards, and Worx.
Compare the complete machine rather than relying on the badge The right brand is the one that supports the work, parts, and service you actually need
Find the pressure washer advice that fits what you need to do
You do not need to understand every specification before choosing a pressure washer. Start with the surface, the amount of work, and how often the machine will be used. From there, the right type, setup, and accessories become much easier to narrow down.
Start with what you need to clean rather than the machine you think you need to buy. Once the surface, workload, water supply, reach, and frequency of use are clear, the equipment choice usually becomes much simpler.
Tell me what you need to clean and I will help you narrow down the choice
Write to [email protected] with the surface, workload, budget, and equipment you are considering.