Karcher T350 Patio Cleaner Best Price Guide Today

The Kärcher T350 patio cleaner is a solid buy for most homeowners with a K2–K7 Kärcher pressure washer, and right now you can typically find it for between £30–£55 depending on the retailer and whether it's bundled with accessories. The best prices tend to appear at Amazon, Screwfix, B&Q, and Argos, with Amazon usually being the most competitive on standalone units. Before you buy, though, you need to confirm your pressure washer uses a standard Kärcher quick-connect fitting and falls in the K2–K7 Home & Garden class range, because the T350 won't work with industrial Kärcher machines or third-party pressure washers that use different connector standards.

Is the Kärcher T350 the right buy for your patio?

For most people cleaning a standard garden patio, yes, the T350 is worth buying. It covers the most common scenarios: concrete slabs, brick pavers, natural stone, and block paving that's picked up a season or two of algae, mildew, and general outdoor grime. The rotating nozzle head and built-in splash guard make a real difference compared to using a standard lance, you get more even coverage, far less splashback soaking your clothes and walls, and a cleaner finish without streaks or tiger-stripe marks.

That said, it's not perfect for every situation. If you're wondering whether Kärcher patio cleaner attachments are worth it in the real world, this guide breaks down the common pros and cons and how to judge performance for your exact patio not perfect for every situation. If you have delicate surfaces like soft sandstone, Indian sandstone, or old grouted porcelain tiles, you'll want to dial back the pressure or test a small area first, because even a mid-range machine can bite into softer materials. The T350 does have continuous pressure adjustment, which helps, but it won't save you from a machine set too high on a fragile surface. For robust concrete, brick, and hard stone, though, it's genuinely excellent.

If you're comparing this to the smaller T150 or T5 models, the T350 covers more area per pass and suits larger patios more efficiently. If you are specifically considering the Karcher T150 patio cleaner, the main thing to compare is whether you need the smaller attachment for tighter spaces or whether the extra coverage of the T350 makes more sense smaller T150. If you want a detailed breakdown of other Kärcher patio cleaner models, those comparisons are worth checking before committing.

What the Kärcher T350 actually is

The T350 (order number 2.643-252.0) is a patio cleaner attachment, not a standalone pressure washer. It connects to your existing Kärcher machine and replaces the lance for surface cleaning work. It weighs just 1.5 kg, stands 971 mm tall with the handle extended, and has a cleaning head that's 280 mm wide. The key working parts are two rotating flat jet nozzles inside a circular housing with a splash guard around the perimeter. Kärcher’s official T350 datasheet specifies that the attachment uses two rotating flat jet nozzles inside a circular housing with a splash guard around the perimeter. As you push it across the surface, those nozzles spin at high speed and blast water downward in a uniform pattern.

In practice, this gives you a much more consistent clean than a standard spray lance. A lance delivers pressure in a narrow fan or point, which means you naturally get uneven coverage unless you're very methodical. The T350's rotating head removes that variable almost entirely. The continuous pressure adjustment feature lets you tweak the intensity at the tool itself rather than going back to the machine, which is useful when you're moving between a rougher concrete area and a more delicate paved section in the same session.

It's designed for horizontal surface cleaning, meaning patios, paths, driveways, and decking. It won't do walls or vertical surfaces, and it's not designed for cleaning vehicles. If your patio is large (anything over about 30–40 square metres), this attachment will save you a significant amount of time versus hand-lancing the whole area.

Compatibility: check this before buying

This is where people waste money, so pay attention. If you are trying to figure out which Karcher for patio cleaning setup fits your washer, start with the compatibility checks first check this before buying. The T350 is compatible with Kärcher Home & Garden pressure washers in the K2 through K7 class. That covers the most popular domestic Kärcher machines sold in the UK and US, including models like the K2 Classic, K4 Classic, K5 Classic, and K5 Classic Home. If you own any standard K-series Kärcher machine from the last several years, you almost certainly have the right quick-connect fitting and the T350 will click straight in.

What it won't work with: Kärcher's professional HD or HDS series machines (these use a different connector and deliver far more pressure than the T350 is rated for), third-party pressure washers that use a different quick-connect standard, and older Kärcher machines that predate the current click-lock connector design. If you're not sure which series your machine is, check the model sticker on the body of your pressure washer. If it starts with K and is followed by a single digit (K2, K3, K4, K5, K6, K7) and says "Home & Garden" or just lists it as a consumer model, you're good.

How to find the best price right now

The T350 is widely stocked, which is good news for price shopping. Start by checking Amazon, Screwfix, B&Q, Argos, and the Kärcher official website at the same time. Prices shift regularly, and there's often a £5–£15 gap between the best and worst options on any given day. Amazon tends to have the lowest standalone price but watch whether it's fulfilled by Amazon or a third-party seller, as that affects returns. Screwfix and B&Q are reliable for in-store pickup if you want it today without waiting for delivery.

Seasonal timing matters more than most people realise. Prices tend to creep up in spring (March–May) when everyone is digging out their pressure washers. If you're reading this in late summer or autumn, you're more likely to catch end-of-season stock clearances. Bank holiday weekends (especially May and August in the UK) often come with tool and garden equipment promotions at the bigger retailers.

The Kärcher website itself sometimes offers bundle deals that include the T350 with a K-series machine, which can represent better overall value if you're also in the market for a new pressure washer. Compare the bundle price against buying separately before assuming either is the deal.

• Amazon: typically the cheapest standalone price, especially with Prime; check seller fulfillment status
• Screwfix: competitive and often has click-and-collect same day; good for price-matching
• B&Q: stock varies by store; check online first before visiting
• Argos: reliable for home delivery and returns; price occasionally matches Amazon
• Kärcher official site: worth checking for bundles and any manufacturer promotions
• eBay: fine for new-in-box units from reputable sellers, but check return policy carefully

What to check in any listing before hitting buy

Not every listing for the "Kärcher T350" is actually the same product. The order number you want is 2.643-252.0. If a listing doesn't mention that number, or if it seems oddly cheap, double-check the model carefully because Kärcher makes several patio cleaner models (T150, T250, T350, T450, T-Racer variants) and the names can get mixed up in listings, especially on marketplace platforms.

Bundles can be good value or inflated depending on what's included. A bundle with a compatible detergent, a protective case, or an extension hose might be genuinely useful. A bundle that adds accessories you already own just to justify a higher price is not. Work out what you actually need before evaluating bundle pricing.

On warranty: the T350 sold through authorised Kärcher retailers typically comes with Kärcher's standard guarantee. If you're buying from a third-party marketplace seller, confirm the warranty terms because some grey-market units don't qualify for Kärcher's manufacturer support. This matters if something breaks in year one.

• Confirm order number: 2.643-252.0 is the T350
• Check whether the price includes VAT if you're comparing UK retailer vs. marketplace listings
• Review the returns window, especially for marketplace sellers (aim for 30 days minimum)
• Factor in delivery cost, which can add £3–£6 and close the gap between retailers
• For bundles, price out the components separately to see if the bundle is actually cheaper
• Check stock status: 'in stock' vs 'ships in X days' matters if you need it for a weekend clean

Using the T350 on common patio messes

Concrete, brick, and hard stone patios

For concrete slabs, brick pavers, and hard natural stone like granite or slate, the T350 works brilliantly with a K4 or K5 machine set to medium-high pressure. Start at the far end of your patio and work backward toward an exit point so you're not walking over the cleaned area. Overlap each pass by about 20–30% to avoid visible lines. On heavily stained concrete, a pre-treatment with a patio cleaner chemical applied 10–15 minutes before you use the T350 will produce significantly better results than pressure alone, the T350 then blasts away the loosened grime rather than trying to do all the work mechanically.

For grouted brick and block paving, keep a steady walking pace. Slowing down too much in one spot risks eroding the jointing sand between pavers. Once you've cleaned, check the joints and top up with kiln-dried sand if any have been disturbed.

Algae, mold, and green slime

Green algae and black mold are probably the most common reasons people buy a patio cleaner attachment, and the T350 handles them well with a bit of preparation. Don't just blast directly with high pressure, because algae roots itself into surface pores and raw pressure alone often pushes it around rather than removing it. I learned this the hard way on a shaded north-facing path: two passes with the T350 at full pressure still left a greenish tinge because I hadn't pretreated. Apply a diluted patio biocide or algae remover first, leave it for 15–20 minutes (or longer for severe growth), then run the T350 over the surface at moderate pressure. The difference is significant.

For mold between pavers or in grout lines, a narrower lance attachment after the T350 pass can help get into the tighter spaces the rotating head can't reach. The T350 does the bulk area work efficiently; detail spots need a bit of targeted follow-up.

After any algae or mold clean, applying a sealing or inhibitor treatment is worth the extra step. It significantly extends the time before regrowth appears, especially on shaded patios where moisture sits.

Your buying plan: final steps before you order

Here's how I'd approach this if I were buying today. First, confirm your pressure washer is a Kärcher K2–K7 Home & Garden model. If it is, you're compatible and there's no reason to hesitate on the T350. Second, open Amazon, Screwfix, and B&Q simultaneously and compare current prices including delivery. Third, check whether any are running a bundle that includes something you'd buy anyway, if not, take the cheapest standalone option from a reputable seller with a solid returns policy.

1. Verify your machine: K2–K7 Home & Garden Kärcher with standard quick-connect fitting
2. Check live prices at Amazon, Screwfix, B&Q, and Argos in one sitting
3. Confirm order number 2.643-252.0 in the listing to avoid model confusion
4. Factor in delivery cost and returns terms before treating any price as final
5. Order a patio biocide or algae remover at the same time if your patio has green growth
6. Once delivered, test on a small inconspicuous area first, especially on natural stone
7. After cleaning, consider a surface sealer to protect the clean and slow regrowth

On maintenance: rinse the T350 head with clean water after every use and store it out of freezing temperatures. The rotating nozzles are the working part and grit buildup will affect performance over time. Kärcher sells replacement nozzle heads if yours ever wears out, so the attachment has a longer useful life than people often expect. Treat it reasonably and it'll last several seasons without issues.

If you're still deciding between the T350 and other models in the Kärcher range, it comes down to patio size and machine class. The T150 is fine for smaller decks or occasional use with a K2. The T350 is the better all-rounder for medium to large patios and anything from a K3 upward. For most homeowners with a standard UK back garden patio, the T350 hits the value sweet spot and the best price you'll find for it today will be at one of the mainstream online retailers listed above. If you want a deeper opinion on performance, ease of use, and results you can expect, check our full Karcher T5 patio cleaner review.