30 Common Pressure Washer FAQs (with Equip2clean Recommendations)

1. What is a pressure washer and how does it work?
   A pressure washer uses a motor or engine-driven pump to force water through a narrow nozzle, creating a high-pressure jet that blasts away dirt and grime. It’s essentially a powerful water gun – more effective than a regular hose due to its high PSI (pounds per square inch) pressure and LPM (litres per minute) flow. Petrol washers (like many Gorilla Power or Kiam models) use petrol engines for high power, while electric washers (like the Kiam DTLR series or Gorilla GP4) use electric motors for lighter, quieter home use. For home cleaning tasks (cars, patios, fences), an electric model like the compact Kiam DTLR 2 LITE Electric Pressure Washer (150 Bar, 8.45 LPM) is ideal. For example, the Gorilla GP4 domestic washer delivers 140 bar (≈2030 PSI) and 7 L/min, making light work of patios and furniture.

2. Petrol vs. Electric – which pressure washer should I choose?
   Petrol pressure washers (e.g. Gorilla Power 3600PSI 15LPM 13HP Petrol or Kiam KM3700PR) offer much higher pressure (2000–3600+ PSI) and flow, making them suitable for heavy-duty or commercial jobs. Electric washers (e.g. Gorilla GP4 or Kiam DTLR 2 LITE) are quieter and lighter, ideal for domestic use. For example, the gas-powered Gorilla 3600PSI 15LPM model pumps out a massive 3600 PSI and 15 LPM, whereas the electric GP4 provides 140 bar (≈2030 PSI) and 7 LPM. Choose petrol for tough exterior cleaning or remote sites; choose electric for convenience on smaller jobs.

3. What do PSI and LPM mean on a pressure washer?
   PSI (pounds per square inch) measures water pressure, and LPM (litres per minute) measures water flow. Higher PSI and LPM mean more cleaning power. For example, a 21 LPM petrol washer like the Kiam KM3700PHI operates at 3000–3700 PSI, delivering huge flow for rapid cleaning. In contrast, a domestic washer like the Kiam DTLR 2 LITE supplies about 8.45 LPM at 150 bar (≈2175 PSI). Both specs matter: high PSI tackles stubborn stains, high LPM washes large areas faster.

4. How do I choose the right pressure washer for home use?
   For home tasks (cars, patios, fences), look for moderate pressure (1000–2000 PSI) and flow (6–10 LPM). Electric washers like Kiam DTLR 2 (160 bar, 10LPM) or Gorilla GP4/GP8 are great. The GP4, for instance, is built for small patios, small driveways and mainly vehicles with 140 bar and 7 LPM, better suited for washing your car. For more power (for decks or larger areas) the Gorilla GP8 (190 bar, 11 LPM) can be used. Domestic washers are lighter and more compact, so they won’t handle continuous commercial use, but they’re perfect for weekend cleaning.

5. How do I choose the right pressure washer for business use?
   Commercial cleaning requires heavy-duty models with high PSI/LPM and robust engines. Equip2clean’s professional lineup includes petrol washers like the Kiam KM3700PR (3700 PSI, 15 LPM) and KM3700PHI (3000 PSI, 21 LPM) for contractors, as well as the Gorilla Power range. For example, the Gorilla Power 3100PSI 25LPM 15HP model delivers a whopping 3100 PSI and 25 LPM, ideal for high-volume cleaning. Gearbox-driven pumps (found on all Kiam/Gorilla models) and Honda or Loncin engines ensure durability. For mobile businesses, 4-wheel frames and hose reels (like on Gorilla washers) provide maneuverability and reach.

6. What is the Kiam KM3700PR Petrol High Pressure Washer?
   The Kiam KM3700PR is a professional petrol pressure washer with a Loncin 14HP engine. It delivers up to 3700 PSI and 15 LPM, perfect for stubborn dirt on driveways, vehicles, or machinery. Its heavy-duty design includes a gearbox-driven brass pump, 5 quick-release nozzles, and 10m hose. According to Equip2clean, it “delivers 3600 PSI at 15 L/min” for tough jobs. Its robust build and accessories make it a top choice for exterior cleaning businesses.

7. What is the Kiam KM3700PHI HIFLOW 21LPM Petrol Pressure Washer?
   The Kiam KM3700PHI (HIFLOW) is designed for high flow rate. It produces 3700 PSI max (3000 PSI working) and 21 LPM. This combination (higher volume) is ideal for covering large areas quickly. It features a 14HP Kiam OHV engine, heavy-duty frame, and multi-nozzle set. Equip2clean notes its specs: “Max Pressure 3700 PSI, Flow 21 L/min”. The KM3700PHI is suited to professional cleaners who need to rinse big surfaces or operate off a tank (due to its high water demand).

8. What is the Kiam 3600PR Petrol Pressure Washer (Honda GX390)?
   The Kiam 3600PR is a top-end petrol washer powered by a Honda GX390 engine. It delivers 3600 PSI (maximum) at 15 LPM. Its gearbox-driven pump with stainless-steel pistons and thermal relief valve ensure durability under heavy use. Key features include electric start (12V battery), low oil shutdown, and 5 quick-change nozzles. Equip2clean highlights this model’s “3600 PSI at 15 L/min” power, making it ideal for patios, driveways and vehicles. A great choice for professional users wanting a Honda engine’s reliability.

9. What is the Gorilla Power 3600PSI 15LPM 13HP Petrol Pressure Washer (Loncin)?
   This Gorilla Power model is a petrol washer with a Loncin 13HP engine. It generates 3600 PSI and 15 LPM, packed on a sturdy 4-wheel frame. Key features include electric start, gearbox-driven brass pump, thermal relief valve, and 30m hose with reel. As Equip2clean notes: “3600 PSI Max Pressure” and “15 Litres Per Minute Flow Rate” with a high-performance 13HP engine. It’s a professional-grade machine for the toughest cleaning tasks (e.g. commercial facades or large driveways).

10. What is the Gorilla Power 3600PSI 21LPM 15HP Petrol Pressure Washer (Loncin)?
    This Gorilla Power washer delivers 3600 PSI at a hefty 21 LPM. It has a 15HP Loncin 4-stroke engine and 4-wheel chassis. According to the specs, it features “3600 PSI Max Pressure” and “21 Litres Per Minute Flow Rate”. With electric start, hose reel, and professional accessories, it’s engineered for high-volume cleaning. Equip2clean describes it as “capable of delivering a staggering 15 LPM ... with 3600 PSI” for deep cleaning (not shown above). This model is perfect for contractors who need both power and flow to blast away grime on large areas quickly.

11. What is the Gorilla Power 3100PSI 25LPM 15HP Petrol Pressure Washer (Loncin)?
    This is the high-flow champion of the Gorilla range. It delivers 3100 PSI at an unprecedented 25 LPM. Powered by a Loncin 15HP engine, it requires tank-fed water (due to huge flow) but clears massive areas efficiently. Key features include electric start, gearbox-driven pump, 5 nozzles, and 30m reel. As Equip2clean highlights: “25 Litres Per Minute Flow Rate: Ensures high-volume, efficient cleaning,” and “15HP Loncin engine”. This machine redefines professional cleaning for large industrial sites or fleet cleaning, where speed is critical.

12. What is the Gorilla Power 3600PSI 15LPM Honda GX390 Petrol Pressure Washer?
    Similar in power to the Loncin version, this Gorilla model uses a 13HP Honda GX390 engine. It gives 3600 PSI at 15 LPM. The key features list confirms: “Maximum Pressure: 3600 PSI” and “Flow Rate: 15 litres per minute”, with a Honda engine (electric start/recoil)e. It also has a brass triplex pump and professional nozzles. This durable unit (with Honda’s engine reliability) is excellent for demanding professionals who trust the GX390 powerplant.

13. What is the Gorilla Power 3200PSI 21LPM Honda GX390 Petrol Pressure Washer?
    This Gorilla Power washer combines a 13HP Honda GX390 engine with 3200 PSI and 21 LPM. Its specs (quoted above) show “Maximum Pressure: 3200 PSI” and “Flow Rate: 21 litres per minute”. It has the same 4-wheel chassis and features (electric start, nozzles, hose reel) as other Gorilla models. Equip2clean describes it as the “Apex Predator” with “21LPM @ 3200PSI” – a top-tier choice for pros seeking balanced high pressure and flow with Honda reliability.

14. Can I use a pressure washer on my car or patio?
    Yes, but use moderate pressure and the right nozzle. Domestic washers (e.g. Gorilla GP4 or GP8) often include a turbo or variable nozzle safe for cars and stone. For example, the Gorilla GP4 (140 bar) is designed for patios and vehicles, and comes with a turbo nozzle, fixed brush and detergent bottle. Higher-pressure units should use the widest nozzle (45° or 80°) on delicate surfaces. Always start at low pressure and keep the nozzle moving. For patios or decking, consider a flat-surface cleaner (like Kiam SurfacePro) to avoid streaks. Remember, a powerful washer like the KM3700PR can wash cars, but use care – and never spray at the chassis or delicate trim.

15. Does Equip2clean offer Driveway Cleaning Business Start-Up Packages?
    Yes. Equip2clean provides Bronze, Silver and Gold Driveway Cleaning packages that bundle pressure washers, accessories and chemicals. For example, the Silver Driveway Cleaning Specialist Business Start-Up Package “comes with specialist equipment for driveway & exterior cleaning”. Each package lets you choose a high-power washer (e.g. KM3700PR or Gorilla model) and includes nozzles, hoses, brushes and detergents. These kits help new businesses hit the ground running. (See also the Bronze Driveway{target=_blank}, Silver Driveway{target=_blank} and Gold Driveway{target=_blank} packages on Equip2clean.)

16. Does Equip2clean offer Exterior Cleaning Business Start-Up Packages?
    Yes, similar to the driveway packages. Equip2clean’s Bronze, Silver and Gold Exterior Cleaning packages bundle washers with gutter, roof and window cleaning tools. For example, the Silver Exterior Cleaning Business Start-Up Package is “a professional, great-value bundle that lets you offer pressure washing, roof cleaning/softwashing, gutter cleaning, and water-fed window & solar panel cleaning”. You select your pressure washer (e.g. KM3700PR or Gorilla Power unit) and get accessories like gutter vacuums, softwash nozzles, and water-fed poles. These bundles help new exterior cleaning businesses get all essential gear in one purchase.

17. What accessories should I use with a pressure washer?
    Common accessories include different nozzles (0°, 15°, 25°, 45°, 80°) for variable spray patterns, turbo/spinner nozzles for heavy dirt, and detergent tanks for soaping. For large flat areas, a surface cleaner (rotary floor cleaning tool) like the Kiam SurfacePro (18″ or 21″) drastically speeds up cleaning patios and driveways. Many Equip2clean washers (e.g. Gorilla Power models) offer optional attachments like the Turbo Nozzle 4000 PSI and Rotary Surface Cleaners. Use the high-pressure lance and flat-surface cleaner kit to achieve even, fast results on patios or decking.

18. How do I maintain and winterize my pressure washer?
    To maintain your washer, regularly check oil (for petrol engines and pumps), keep the inlet filter clean, and run clean water through the system after each use. For winterizing, drain all water and run antifreeze through the pump to prevent freezing. Store indoors or cover outdoors. Also, service the engine (spark plug, oil change) per Honda/Loncin guidelines. Proper maintenance ensures your machine’s longevity and warranty validity.

19. Can a pressure washer run off a water tank or butt?
    Yes – especially the high-flow models. For models like the Gorilla 25 LPM washer or the Silver Exterior package with a 240L bin, you can pump from a tank or water butt if pressure is sufficient. Equip2clean mentions a “240 L Wheelie Bin Buffer Tank  on-site water supply; no reliance on customer taps” in their exterior packages. Just ensure a filter is used to avoid debris, and prime the pump properly. Low-flow (15LPM) washers like the KM3700PR/Gorilla can usually pull from mains or a tank; ultra-high-flow units (25LPM) often require a large supply.

20. What comes “in the box” with these pressure washers?
    Almost all Kiam/Gorilla washers come with essential accessories. For example, the Gorilla 3600PSI 15LPM (Loncin) includes: high-pressure gun with lance, 30m hose on reel, 5 quick-release nozzles (0–80°), water filter and suction hose, battery (for electric start), nozzle kit, and user manual. The Kiam 3600PR (Honda GX390) likewise includes a 30m hose reel, trigger gun, and 5 nozzles. Domestic models (GP4, GP8) include turbo nozzles, detergent bottles and connection kits. Always check the “What’s in the box” section on the product page to confirm included items.

21. How safe are pressure washers to use?
    Pressure washers are very effective but require caution. Always wear eye protection and avoid pointing the spray at people, animals, or electrical outlets. Use the correct nozzle – start with the widest spray (e.g. 25° or 40°) and move closer only if needed. Never spray delicate surfaces (stucco, windows) with full pressure; use lower settings or a soft-wash nozzle. Many Equip2clean machines have safety features like low-oil shutdown (protects the engine) and thermal valves (prevents pump overheating). When in doubt, consult the manual (often linked on the product page) and follow all safety guidelines.

22. Why choose a triplex pump over an axial pump?
    Triplex (gear-driven) pumps are heavier but last longer under continuous use. All the models above (KM3700PR, Gorilla Power, etc.) use brass triplex pumps with stainless-steel pistons for durability. This means they can handle the stress of regular, professional cleaning with proper maintenance. Axial pumps (found on cheaper/compact models) are lighter but wear out faster if run continuously. For professional use, Equip2clean’s triplex-pump machines are the recommended choice.

23. Can I attach a detergent injector or foam cannon?
    Yes. Most models include or support a low-pressure detergent applicator. For example, the Gorilla power washers come with a chemical injector for foaming detergent. You can also connect a foam cannon or pump sprayer for specialized cleaning. Equip2clean sells accessories like the HypoJet® injector and Snowfoam bottles for this purpose. Just ensure your machine’s pump speed (LPM) matches the accessory’s requirements.

24. What’s the warranty and support on these machines?
    All Equip2clean pressure washers come with a 12-month return-to-base warranty (for pumps and engines). This covers manufacturing faults (check the manual/user warranty card for details). Equip2clean also offers parts, manuals and tech support. Many product pages list maintenance tips and manuals . The Trustpilot ratings (displayed on each page) also reflect their after-sales support.

25. What PSI and flow do I need for a washing business?
    It depends on the work. For heavy grime (oils, chewing gum, graffiti), you’ll want 3000–3600 PSI and 15–21 LPM (e.g. KM3700PR or Gorilla 3600PSI 21LPM). For large areas (parking lots, warehouses), very high flow (like Gorilla’s 25 LPM model) can cut cleaning time. For roof/gutter cleaning (often uphill), a slightly lower pressure (2000–3000 PSI) with accessories is safer. When building a business, consider the equipment in the Driveway/Exterior packages, which match PSI/LPM to typical jobs.

26. Can these washers run continuously?
    Petrol washers with triplex pumps are designed for continuous pro use, as long as cooling pauses occur (avoid overheating). They have built-in thermal relief valves to protect the pump. However, always give the engine a rest every 30–60 minutes. Electric domestic models (GP4/GP8) should not be run for hours on end; they have automatic stop systems to prevent overheating. Always follow the duty cycle guidelines in the manual.

27. How do I start a petrol pressure washer?
    Fill it with fuel (unleaded petrol) and oil as specified (e.g. 10W-30 engine oil), ensure the water inlet is attached, then prime the pump (turn on water, flip the lance trigger until water flows). For electric start models (both Kiam and Gorilla 12V start), just turn the key; for pull-start models, use the recoil cord. The Gorilla 3600PSI 15LPM Loncin has both electric and pull start. Once started, let it idle briefly before applying full throttle and engaging the spray. You can also watch a video here which shows you how to start a petrol pressure washer.

28. What about after-sales and accessories from Equip2clean?
    Equip2clean stocks all parts and accessories for these models. From spare spray nozzles to full accessory kits (like pressure hoses, quick couplers, extension lances), you can find them on their site. They also offer Turbo Nozzles (4,000 PSI), hypo injectors, and even surface cleaners. If you buy a business package, you can “Choose Your Pressure Washer” and then easily add professional-grade extras (shown on the Silver Exterior page). This makes it easy to customize your setup.

29. How does Equip2clean ensure quality?
    Equip2clean specializes in pressure cleaning equipment. All Kiam and Gorilla products are tested and come with detailed specs and warranties. They highlight features like heavy-duty frames, Honda/Loncin engines, and brass triplex pumps for durability. Customer reviews (shown on product pages via Trustpilot) are “Rated Excellent”. Plus, Equip2clean offers technical support and manuals (see the PDF manuals linked on product pages). Their blog and FAQ also provide usage tips, proving their expertise in the field.

30. How can I contact Equip2clean for help or service?
    You can reach Equip2clean by calling 0151 548 5500 or via their contact page. They have a showroom and a booking system for consultations. Most product pages also have a “Contact Us” and trust logos. For service, they run a return-to-base warranty, meaning you ship the unit back for repair. They also have a comprehensive FAQ & Support section on their site (see top menu). This ensures you get assistance long after purchase.