Electric Pressure Washer FAQ — Your Questions, Answered Honestly
Based on hands-on testing, not manufacturer spec sheets. If something's unclear, email us directly.
Product Authenticity & Quality
Is the PSI number on the box accurate?
Usually not in the way you'd hope. Most manufacturers list "Max PSI" — the pressure the pump can reach for a fraction of a second under ideal lab conditions. The number that reflects what you'll actually experience is "Rated PSI," which is the sustained working pressure. The gap between the two can be 15–25%. When we evaluate a machine, we measure actual output with a pressure gauge. If a manufacturer only lists Max PSI and won't disclose Rated PSI, that tells you something about how much they want you to know.
How do I know if a machine has a real induction motor or a brush motor?
Check the product specs for the words "induction motor" or "brushless motor" — these are the durable kind, rated for 500–1,000+ hours of use. If the listing just says "motor" with a wattage figure and no further detail, it's almost certainly a brush motor rated for 100–200 hours. Brush motors aren't inherently bad for occasional use, but if you're using your machine regularly or want it to last 7–10 years, the motor type matters. We note this in every review.
What does GFCI mean and why does it matter?
GFCI stands for Ground Fault Circuit Interrupter — it's the safety device built into the plug that cuts power if it detects a leak to ground, which can happen when you're using an electric machine outdoors in wet conditions. The National Electrical Code requires it for outdoor use in wet locations. If a pressure washer doesn't have a GFCI plug, don't buy it. Every machine we recommend has one.
How do I spot a PSI-inflated listing?
Six warning signs: (1) Only "Max PSI" listed, no Rated PSI. (2) No GPM figure anywhere in the listing. (3) PSI displayed in large text on the product image, GPM buried in a footnote. (4) The phrase "up to X PSI." (5) No mention of which test standard was used. (6) The PSI on the box is higher than the PSI in the manual. When you see two or more of these together, walk away.
Are machines tested before they leave the factory?
Reputable brands test for PSI/GPM output, seal integrity, and GFCI function before shipping. What factory testing doesn't catch is long-term durability under real-world use — which is why we run machines for extended periods and track reader feedback over months, not just after unboxing.
Buying Guide
What PSI do I actually need?
For most suburban homeowners, 1,800–2,400 PSI handles everything: concrete driveways, cars, wood decks, vinyl siding, and outdoor furniture. If your main job is a car or light deck cleaning, 1,500 PSI is enough and a lighter machine is easier to handle. If you're dealing with heavy moss on concrete or multi-year grime buildup, 2,500 PSI+ gives you more margin. We've never found a residential use case that required more than 3,000 PSI from an electric machine.
What's a Cleaning Unit and why should I care?
Cleaning Units (CU) = PSI × GPM. It's the number that actually tells you how much cleaning power a machine delivers, because pressure and flow rate work together. A machine at 2,000 PSI and 1.8 GPM produces 3,600 CU — more real-world cleaning power than a machine marketed at 2,400 PSI running at only 1.2 GPM (2,880 CU). We list CU values in every review. It's the first number to compare.
Should I get a corded or cordless machine?
Corded if: you have an outlet within reach, you plan to clean for more than 30 minutes at a stretch, or you want to spend less. Cordless if: you need to move around the full perimeter of a house without extension cord management, you already own compatible batteries from EGO, Greenworks, or Ryobi, or convenience matters more than runtime. A 7.5Ah battery on an EGO 56V system gives you roughly 22–28 minutes of continuous output under real load — plan accordingly.
Is a surface cleaner attachment worth buying separately?
For anyone whose main job is a concrete driveway or large patio: yes, without question. A surface cleaner (the circular disc that spins two nozzles) cleans flat surfaces 3–5× faster than a wand and eliminates the striping pattern a wand leaves behind. Budget around $40–$70 for a good one. We recommend it more often than almost any other accessory.
Electric vs gas — which is actually better for home use?
Electric for almost every residential scenario. Electric machines are quieter (75–85 dB vs 90–100 dB for gas), require zero maintenance between uses, start instantly, and produce no fumes. The PSI gap between electric and gas has narrowed significantly. For driveways, decks, cars, and siding — the jobs 90% of homeowners actually have — a quality electric machine handles it. Gas makes sense for large commercial spaces or when you genuinely need sustained 3,500+ PSI. That's not most houses.
Orders & Shipping
How long does shipping take?
Orders are processed within 1–3 business days after payment confirmation. Estimated delivery for domestic US shipments is 3–7 business days. You'll receive a tracking number by email once your order ships. Delays can occur around major holidays — if your order is time-sensitive, contact us before placing it.
Do you ship to all US states?
We ship to all 48 contiguous states. For Alaska and Hawaii, please contact us before ordering for a shipping quote — freight costs to those destinations vary significantly by machine size and weight.
Can I track my order?
Yes. You'll receive a tracking number by email within 24 hours of your order shipping. You can also track your order at any time through our Track Your Order page.
What payment methods do you accept?
We accept Visa, Mastercard, American Express, Discover, and PayPal. All transactions are processed over a secure SSL connection. We do not store your card details on file.
What if an item is out of stock?
If a product goes out of stock after you've ordered, we'll contact you within 1 business day with options: a full refund, a substitution recommendation, or a waitlist for the same item. We won't hold your payment and wait in silence.
Returns & Guarantee
What's your return window?
30 days from the date of delivery for unused machines in original packaging. If the machine arrived damaged or has a defect, the return window doesn't apply — contact us and we'll sort it out. Full details on our Returns & Guarantee page.
What if my machine arrives damaged?
Take photos of the damage before unplugging or using the machine, then contact us at [需填写客服邮件] within 48 hours of delivery with your order number and photos. We'll arrange a replacement or full refund — no runaround.
My machine stopped working after a few months. What do I do?
Contact us with your order number and a description of what happened, including how the machine was stored. Manufacturer warranties cover most component failures — we'll help you navigate the claim. If it's something diagnosable remotely (a common O-ring failure or winterization-related issue), we'll walk you through it first before involving the manufacturer.
Does the warranty cover freeze damage from winter storage?
Most manufacturer warranties cover mechanical defects but not damage from improper storage — including freeze damage from water left in the pump. This is exactly why we include winterization instructions with every order. If you followed the Pump Saver process correctly and still experienced freeze damage, contact us — that's a product defect, not user error, and we'll treat it accordingly.
Use & Maintenance
What's the right way to clean a wood deck without damaging it?
Use a 25-degree (green) or 40-degree (white) nozzle. Keep the wand moving — don't hold in one spot. Maintain at least 12 inches of distance from the wood surface and go with the grain. If your deck hasn't been cleaned in several years, apply a wood-safe detergent with the low-pressure soap nozzle first — it does most of the work, and you're just rinsing. The 0-degree (red) nozzle should never touch a wood surface. We learned this the hard way — it's in our founding story for a reason.
Can I use dish soap in the detergent tank?
No. Standard dish soap contains surfactants that degrade the rubber seals and O-rings inside the pump over time. Use detergent specifically formulated for pressure washers — the low-foam formulation is chemically compatible with pump components. Using the wrong soap won't break the machine immediately, but it accelerates internal wear in ways you won't notice until something leaks.
How do I winterize my pressure washer before storage?
The short version: (1) Disconnect the water supply and run the machine briefly to clear water from the hose and pump. (2) Pull the trigger several times with no water connected to push out remaining water. (3) Run Pump Saver through the inlet for about 30 seconds. (4) Store the machine and hose indoors, or at minimum somewhere that won't drop below freezing. Skipping step 3 is the single most common cause of pump failure we see. The Pump Saver costs under $10. The pump repair doesn't.
The machine keeps shutting off. What's happening?
Most likely the thermal overload protection — almost every electric pressure washer has a safety cutoff that triggers when the motor gets too hot. This typically happens after 30–45 minutes of continuous use, or sooner in hot weather above 85°F. Let the machine cool for 10–15 minutes before restarting. If it's shutting off after only 10–15 minutes, that points to a restriction in the water supply (check the inlet filter) or a motor issue that may be covered under warranty.
How often should I clean the inlet filter?
Every few uses, or any time you notice reduced pressure. The inlet filter catches sediment from your water supply. A partially blocked filter reduces GPM — which reduces your effective cleaning power and makes the pump work harder. It's a 2-minute job: unscrew the fitting, pull out the screen, rinse it, reinstall. Most people have never done it. Most pressure washer problems we hear about would have been prevented by it.
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