The official advice comes after Australian comedian and creator Christian Hull went viral with a TikTok video showing footage of him washing his floors using the attachment.

While the multipurpose cleaning head is an all new creation, the body of the Dyson Hard is a familiar beast, identical in appearance (and power) with the Dyson DC44, just in a new, white colour scheme. Resemblance to previous models aside, the standout here is the new mopping head. It took Dyson a long time to get here but it’s finally competing with the likes of the Samsung Bespoke Jet and the LG CordZero A9 Kompressor Aqua. With typical Dyson aesthetic, the new Submarine wet roller head has clean lines, a velvet roller, a small clean water ‘bottle’ (yes, it does resemble a water bottle) and, somewhere behind it all, a small compartment for the dirty mop water to collect.People who love Dyson products and who are ready to upgrade their existing vacuum will be the ideal buyers for this particular machine, as will people looking for a next-level vacuum-mop combo. The V15s Detect Submarine was better than any wet-dry floor care tool I’ve tried. As a result of the oversaturation of the wet roller head, and the long drying time, after mopping my floors for the first time using the Submarine, there were visible streaks left behind on the floors. The floors were fairly clean prior to that first run — I had mopped with a traditional spin mop four days before testing the Submarine for the first time (I had company coming over, and also I was testing a different floor care product for work!), so it wasn’t an issue with my floors being overly dirty, which may have required a second pass with the Submarine. While it’s possible to get a full 60 minutes of runtime from the V15s Detect Submarine, that will only work with the non-motorized tools like the Hair Screw Tool and the Combination Tool or achievable in Eco mode. You’ll also get almost the whole 60 minutes with the Submarine roller head as the suction is switched off with it attached, however you'll run out of clean water long before you'll need to recharge the machine. He went on to explain he’d seen other videos raving about the unofficial attachment, explaining it works by removing the vacuum’s regular brush head and replacing it with a mop you add water to.

I’ve used the Dyson V15s Detect Submarine two to three times a week for four weeks as my main vacuum, while also running the Dyson V15 Detect to compare suction during vacuuming. I allowed hair and dust to accumulate on the carpet in one room before the first test run. This is a great product and does the job well. The only little issue I have is the size of the water tank, could be bigger.For dry mopping, simply remove the water reservoir or leave it empty - the dry microfiber will polish off any marks or streaks on your floor, leaving it sparkling and shiny!

Maintaining the Submarine is easy as the velvet roller comes off and is fully washable, and you can rinse out the entire cleaning head – press a marked red button and the two parts slide apart.

Dyson advises that you follow the manufacturer’s dilution ratio instructions to determine how much water to cleaner to use. This is where someone at Dyson didn’t think things through as the compartment isn’t well sealed. That means that after you finish mopping and you want to remove the head to clean it, you will be dripping water on the floor as it sloshes around due to the movement. The only way that I found to avoid this is to make sure the drip tray – a grey plastic tray that fits under the Submarine head – is placed by the sink you’re going to be cleaning the head at before you start to mop. The moment you finish, place the drip tray under the head and then detach it. It’s not foolproof though and you might just need the head again to mop up the spill you just created. Another thing to keep in mind is that the Submarine attachment doesn’t hold a lot of clean water. You’ll be able to do a large living room only before you’ll need to refill the little bottle in the cleaning head. So if your multi-room home is all hard floors, you’ll need to fill it often and empty the dirty water just as often, which may not be ideal for everyone.