We Tested the Jetterix for 14 Days on Patio, Driveway & Car — Here Is Our Honest Verdict

If you have been scrolling through Facebook, Instagram, or major news sites over the past few weeks, you have almost certainly come across the same gadget we did: the Jetterix.

A small brass piece. You screw it onto your garden hose, and it is supposed to turn it into a pressure washer. Enthusiastic reviews in every gardening group. Ads everywhere. Dozens of readers asking us whether it actually works.

So we checked it ourselves. We ordered a Jetterix and tested it for 14 days in various spots around the house — without going easy on the marketing promises. Here is what we found.

Ordering & Delivery

First test: manufacturer reliability. The Jetterix is sold exclusively through the official website — not on Amazon, not in hardware stores. This immediately makes many readers suspicious (us too).

We ordered on a Tuesday at 2:17 PM. Payment by PayPal or card. Order confirmation received in 11 minutes. Shipping notification with tracking number: the following morning. Delivery on Thursday — 2 business days after ordering.

Packaging: solid. Printed cardboard box with protective foam. In the box:

• The Jetterix nozzle in solid brass (noticeably heavy in the hand)
• Full adapter kit for all common fittings
• English instructions (clear enough for anyone)
• Quick-Start sticker with nozzle settings

First impression: it feels like quality, not a plastic toy. The brass is noticeably heavier than any hardware-store nozzle. Clean threading — no flashing, no imprecision. Installing on the hose: unscrew the old head, screw on the Jetterix. Stopwatch in hand — 19 seconds, no tools needed.

Test 01 32 m² Stone Patio with Algae & Moss in the Joints

Surface: ~32 m² Material: light stone slabs Dirt: algae film, moss in joints, black stains Last cleaned: summer 2024

What We Found

Classic post-winter state: light slabs covered in a grey-green film, moss growing in every joint, and several black rotting-leaf stains. We had deliberately left one corner to deteriorate over winter to make the test honest.

How The Test Went

Fan jet setting, about 25 cm from the ground, steady sweep across the slabs. For stubborn stains, we briefly switched to concentrated jet. The big surprise: the mossy joints. We photographed them out of scepticism, convinced we would need a wire brush. Wrong — the water literally flushed the moss out of the joints, without damaging the filler itself.

32 m² completely clean in 14 minutes. No brush, no detergent, no kneeling. Light stone again, clear joints. Best surprise of the entire test.

Test 02 18 m² Concrete Driveway — Never Cleaned

Surface: ~18 m² Material: concrete, several decades old Dirt: thick black algae film, biofilm Last cleaned: never

What We Found

The tougher case: a narrow concrete strip running alongside the house — little sun, lots of shade. The surface was entirely covered in a black-green layer — you could not even make out the concrete underneath.

How The Test Went

We wanted to know if the Jetterix handles extremes. Set straight to concentrated jet, slow sweep in strips. The black layer came off immediately — it looked like the surface was being peeled in layers. Despite the thickness of the buildup, a single pass was enough. After 13 minutes, no arm fatigue — the accessory weighs almost nothing.

18 m² from black-green to light grey in 13 minutes. Single pass was enough. Works on badly neglected areas just as well as light dirt.

Test 03 Family Estate Car After a Long Motorway Trip

Vehicle: silver estate car Dirt: road dust, embedded insects, brake dust Last washed: 3 weeks ago + 500 miles of motorway

What We Found

The test we approached most carefully. Pressure washers and car paint are always tricky — too close and the paint suffers. The vehicle was covered in road dust, with insect residue on the bonnet and dark brake dust on the alloys.

How The Test Went

Safety distance of 30 cm, softest fan setting. Bonnet and front first, then sides, then alloys. Insect residue gone completely on the second pass. Paint check after drying: no scratches, no scuffs, no white marks.

Full exterior clean in 11 minutes. No car wash, no bucket, no sponge. Paint check after: perfect.

Three Bonus Uses We Tested Along the Way

During the 14 days of testing, a few extra tasks came up naturally. Quick summary:

House Facade

14 m of plinth with algae streaks — uniform again in 12 minutes. Fan jet, no concentrated mode needed.

Garage Driveway

28 m² of concrete with oil stains and tyre marks. Concentrated jet, 14 minutes.

Block Paving

Small paving stones at the garage entrance, heavily soiled. Lifted off in a single pass.

How Does the Jetterix Actually Work?

At this point in the test we wanted to understand. How can an accessory with no motor, no pump and no electricity produce the same pressure as a traditional high-end pressure washer?

The answer is the Venturi effect — a physics principle from the 18th century. When water passes through a narrowing pipe, it accelerates. Like putting your thumb halfway over a garden hose — the jet suddenly becomes much stronger.

The Jetterix builds this effect into three successive chambers, each machined more precisely than the last:

• Low-pressure inlet (3–4 bar) — what comes out of any standard garden hose.
• Precision Venturi narrowing — machined to 0.1 mm tolerance. This is where water accelerates to 280 km/h.
• High-pressure outlet (up to 200 bar) — more than most pressure washers in the £350 range.

What Verified Buyers Are Saying

To not rely solely on our own impression, we went through verified buyer reviews in parallel. The picture is remarkably consistent: over 7,000 verified reviews, average 4.7 out of 5 stars. The few negative reviews almost all concern delivery times during peak season — not the product itself.

Frequently Asked Questions