# RDA, RTA and RDTA: the differences explained > RDA, RTA and RDTA compared on tank, running time, flavour and upkeep, with the verdict for each type of vaper and what the UK rules change. Three acronyms come up the moment anyone pushes open the door to rebuildables, and they cause as much confusion as they promise freedom. **RDA, RTA and RDTA** describe three philosophies of vaping, three compromises between flavour, running time and simplicity. Choosing at random means ending up with an atomiser that contradicts how you actually vape, which is how a lot of expensive kit ends up in a drawer. This piece takes the three formats through the same criteria and names the one that fits each profile. ## RDA, RTA and RDTA: the difference in a sentence The difference between **RDA, RTA and RDTA** comes down to where the e-liquid sits. The RDA, or rebuildable dripping atomiser, has no tank at all: you drip liquid straight onto the wick. The RTA, or rebuildable tank atomiser, adds a tank that feeds the coil through side channels. The RDTA, or rebuildable dripping tank atomiser, puts the tank underneath the deck, with the wick tails dropping into it from above. Three ways of feeding the same fibre, three amounts of running time and three flavour experiences. All three share a common ancestor, the rebuildable deck on which you install your own resistance. A fourth term circulates, the RBA, which describes a rebuildable deck dropped into an off the shelf tank in place of a disposable coil head. That is not a format in its own right but an adaptation part, and understanding the distinction avoids a misunderstanding that catches out plenty of newcomers. In practice the choice is between the three self contained atomisers, with the RBA acting as a bridge for anyone who already owns a compatible tank. ## The RDA, flavour without compromise The dripper is the format of the flavour purist. With no tank in the way, liquid goes straight from the bottle to the fibre, which preserves the aromatic detail better than any other arrangement. That purity has an accepted downside, which is running time. You redrip every few puffs, so slipping the atomiser into a pocket for a working day is out of the question. In return the RDA gives a direct aromatic result, generous heat and immediate access to the deck for changing the coil or the wick. It suits the sedentary vaper who chases flavour and accepts dripping often, and its mechanical simplicity makes it an excellent place to learn how to [build a coil](/uk/build-a-coil-step-by-step/). ## The RTA, balance between flavour and running time The RTA is the most widely sold format in Britain, and for good reason. It reconciles careful flavour with a reserve of liquid, so you fill it, vape and forget the bottle for hours. One British specificity belongs here. Refillable tanks sold in the United Kingdom are capped at 2 ml of capacity, so the reserve on any RTA bought here is modest by international standards. That levels the running time argument somewhat, though a 2 ml tank still outlasts a dripper by a very wide margin. The comfort is paid for in setup. An RTA demands precise wicking, because badly fed side channels either choke the coil or leak. The tails have to touch the liquid without letting it flood upwards, which is a knack rather than a measurement. Once the build is dialled in, the RTA offers the best ratio between aromatic pleasure and everyday life. It is the default choice of the rebuildable vaper who wants decent running time without giving up finesse. ## The RDTA, the hybrid format The RDTA tries to combine the best of both worlds, the flavour of a dripper with the tank of a bench atomiser. The deck is open like an RDA, but the fibre drops down into a reservoir underneath. That inverted arrangement feeds the wick by drawing liquid upwards, which gives a result close to dripping with the running time restored. In exchange the format stays rarer on British shelves, is often bulkier, and its vertical wicking disorients beginners. The RDTA appeals to the curious vaper who wants the flavour of an open deck without redripping constantly, provided they accept a slightly steeper learning curve. It is rarely anyone's first rebuildable, and there is no reason it should be. ## RDA, RTA and RDTA side by side Putting the three atomisers against the same criteria clarifies the choice better than any amount of prose. The table below summarises what each one gives up and what it protects. | Criterion | RDA (dripper) | RTA | RDTA | | --- | --- | --- | --- | | Tank | None | Around the deck | Under the deck | | Running time | Very short | Long | Medium to long | | Flavour | Maximum | Very good | Excellent | | Ease of wicking | Simple | Demanding | Moderate | | Suits | Flavour, at home | Everyday, versatile | Curious, hybrid | The comparison does not crown a winner, because each format answers a different use. What it does show is exactly which compromise you are accepting when you pick one over another. ## Budget and upkeep, what the choice means day to day Beyond flavour and running time, each format commits you to a rhythm of maintenance and a rate of consumables. Those practical constraints weigh as much on everyday enjoyment as any spec sheet. The RDA, with no tank, cleans in seconds and needs only a deck and some fibre, but the frequent redripping empties the bottle faster. The RTA asks for more careful upkeep, since the tank and its seals come apart and get rinsed regularly, in exchange for liquid consumption spread more evenly. The RDTA sits between the two, with a reservoir to drain and wicking to redo a little more often. Over time all three rebuildable atomisers cost mainly in fibre and wire, two inexpensive consumables, which remains one of the great arguments for rebuildables over disposable coil heads. Choosing between **RDA, RTA and RDTA** is therefore also a judgement about how much time you are willing to spend at the bench. That question is worth answering honestly before the purchase rather than after it. ## Frequently asked questions ### Which rebuildable format should I start with? A generously sized RTA remains the most comfortable entry point, since the tank forgives lapses of attention and the wicking, though demanding, is learned quickly. A dripper also teaches the gestures well, but its lack of running time discourages any use away from home. ### Can an RTA produce dense vapour? Yes. A modern RTA with wide airflow and a dual coil build produces a large volume, close to a dripper. The tank does not restrict power, it only changes how the fibre is fed. The limiting factors are the build and the airflow, not the principle of the tank. ### Does an RDTA leak more than an RTA? Not necessarily, but its vertical wicking is less forgiving. Tails that are too short and do not reach into the reservoir dry the coil out, while fibre that is too dense slows the liquid coming back up. Set up properly, an RDTA stays sealed day to day. ### Do I need different tools for each format? No. The tools are the same: screwdriver, cutters, ohm reader, fibre and wire or a ready made coil. Only the wicking technique changes, lateral on an RTA, open on an RDA, dropping on an RDTA. One toolkit covers all three. ### Are RBA, RDA and RTA the same thing? No. RDA, RTA and RDTA are complete, self contained rebuildable atomisers. RBA describes only a rebuildable deck inserted into an off the shelf tank in place of a disposable coil head. It is an adaptation part, not an independent atomiser. ## Choosing the format that matches how you vape None of these three rebuildable atomisers is better in the abstract. The RDA maximises flavour at the cost of running time, the RTA balances the two, the RDTA attempts a synthesis for the curious. The right choice follows from one honest question about your real use, at home or on the move, flavour led or convenience led. That fit, far more than any spec sheet, is what makes a rebuildable build enjoyable over months rather than weeks, whichever of **RDA, RTA and RDTA** you settle on. Whatever the format, the fibre remains the deciding factor, which is why our guide to [wicking cotton](/uk/wicking-cotton-choosing-fitting/) is worth reading before the first build. Editorial content for adult readers only. Vaping products usually contain nicotine, a substance that causes addiction. Not for sale to under-18s in the United Kingdom. This article is not a buying recommendation.