Last Updated on October 26, 2026 by Umar Farooq
On almost every steam dryer sold in America there is no boiler and no steam generator. A thin cold-water line feeds a valve at the back, the valve sprays a fine mist into a drum that is already hot, and the drum’s own heat flashes that mist into vapour. GE says so in one sentence on its support site, and once you have read it the whole feature makes sense: steam is a wrinkle-and-odour tool for three to five dry garments, not a way of drying laundry. It will not wash anything, it will not replace an iron on a shirt you actually care about, and on the one load most buyers imagine using it for — towels — the manufacturer tells you not to.
That is not an argument against buying one. It is an argument for knowing which of the three real uses you will actually use, because the feature costs money, costs a plumbing connection, and sits unused on a very large number of the dryers that have it.
Disclosure: washerfixlab.com is a participant in the Amazon Associates Program. If you buy through a link on this page we may earn a commission, at no extra cost to you. We choose products on specification and fit, not on commission, and we say when something is not worth buying.
The drum makes the steam, not a boiler
Here is the sentence, from GE Appliances’ own support library, and it is the most useful thing published anywhere about this feature: “On Dryers with Steam features, cold water is connected to the Dryer and injected into the heated Dryer in a fine mist or vapor. The heat from the Dryer creates steam from the mist or vapor” (GE Appliances — Dryer, Steam Refresh Cycle).
Read that twice, because it reorders everything. The drum is the kettle. The water arrives cold, as droplets, and the element that was already drying your clothes is what turns it into vapour. There is no reservoir heating up, no separate boiler, nothing that needs descaling. It also means the steam only exists while the drum is hot, which is why every manufacturer injects it either at the start of a dedicated short cycle or near the end of a drying cycle — never in the middle, where it would simply be fighting the drying.
LG’s implementation is marketed harder and behaves the same way at the useful level. LG’s help library describes its steam option plainly: “Use this function to add steam. This function injects steam late in the drying cycle to reduce the static electricity caused by dry fabrics rubbing together,” and says of TurboSteam that it “helps refresh fabrics and reduce wrinkles in half the time of other steam settings” (LG — Dryer cycles and options). Half the time of other steam settings is a genuine claim about LG’s own range, not a claim about anybody else’s.
So the mechanism is mist plus residual heat plus tumbling. What that combination is good at is relaxing creases in fabric that has already dried and gone stiff, and loosening smells that are sitting on the surface of a fibre rather than bound into it. What it is physically incapable of doing is dissolving soil, which needs water in bulk and a surfactant. The washer’s steam cycle is a different machine doing a different job, and if that is the question, the washer steam cycle page takes it apart separately.
A steam dryer needs its own cold water line, and buyers find out late
This is the detail that turns a feature into an installation job, and it is the single most common reason a steam dryer never gets used: the water was never connected.
LG’s installation help library is specific. “The dryer must be connected to the cold water tap using a new water supply hose. Do not reuse old hoses.” Supply pressure has a window — “Water supply pressure must be between 20 and 120 psi (138—827 kPa)” — and above the top of it, “a pressure-reducing valve should be installed.” The hose count catches people out too: “If installing a set, you will need one for the Steam Dryer and two for the washer” (LG — Inlet water connection, steam dryer).
Three practical consequences, in the order they will bite you.
You need a second cold outlet, or a Y. Most laundry rooms have exactly two valves: hot and cold, both going to the washer. The standard answer is a Y-splitter on the cold valve, a short hose from the tap to the Y, and a full-length washing-machine hose from the Y to the dryer’s inlet valve. LG ships that fitting with some models and not others, which is worth confirming before delivery day rather than after.
Flush the line first. LG’s instruction is to “flush several gallons of water into a drain or bucket” before connecting, because the dryer’s steam valve has a much smaller orifice than a washer’s fill valve and “foreign particles such as sand and scale” will block it. A blocked steam valve reads to the owner as a broken feature.
It is a permanently pressurised hose in a room with an electrical appliance. LG’s own line is to “replace inlet hoses after 5 years of use to reduce the risk of hose failure.” That is the same advice, and the same failure mode, covered on the braided stainless steel washing machine hoses page — and adding a steam dryer means adding a third hose and a splitter to the set of things that can let go while you are out.
Three to five garments is the published number, and it changes the whole pitch
Marketing for this feature shows a basket of laundry. GE’s support page gives the real figure: “The Steam Refresh cycle is a short steam cycle used for 3 to 5 slightly wrinkled dry garments.” Two conditions come with it, and both matter. “The temperature setting must be set to HIGH and water must be turned on before running the Steam Refresh cycle,” and “using Steam Refresh for single items, especially ones with light fabric, may not achieve optimum results.”
Three to five garments. Slightly wrinkled. Already dry. That is a hanging rail’s worth of shirts, not a wash load — and it is a genuinely good use of ten or fifteen minutes, which is the point. The single-item caveat is the mechanism showing through: one light shirt alone in a large drum does not generate enough contact or enough confined vapour, so the garment flaps about in warm air and comes out much as it went in. Steam refreshing is a crowd activity.
Samsung words its own equivalent without any figure at all. Its Multi-Steam Technology is described only as steaming “away wrinkles, odors, and static” — the job, with no load size and no time beside it. LG’s published cycle table does give a time, and it is also small: Steam Fresh runs ten minutes. Where a manufacturer commits to a number for this feature, the number is a small one.
Which tells you how to judge the feature honestly. If you own a wardrobe of cotton shirts and you currently iron on Sunday evening, a ten-minute refresh that takes the pack-creases out of four of them is worth real money to you. If your laundry is towels, sheets, school uniform and work trousers, you have bought a cycle you will run twice and forget.
The steam cycles run on a clock, not on the moisture sensor
Worth knowing before you compare cycle lists, because it explains a complaint that looks like a fault.
LG publishes the full default table for its dryers, and the steam cycles sit apart from everything else in one specific way. Normal runs 41 minutes at a Dry Level of Normal. Heavy Duty is 54 minutes, Towels 55, Bedding 55 — all at Dry Level Normal. Steam Sanitary is 31 minutes with a Dry Level of Off, and Steam Fresh is 10 minutes, also Off.
Dry Level Off means the cycle is not consulting the moisture sensor at all. It runs its minutes and stops. That is correct behaviour — the load went in dry, so there is nothing for a sensor to measure, and a sensor-controlled cycle would terminate instantly. But it also means a steam cycle cannot adapt to a heavier load or a damp garment, and it will not get a wet item dry no matter how many times you run it. If your dryer’s ordinary cycles are the ones stopping early or running long, that is a sensor question and it is answered on the dryer sensor dry not working page, not here.
The other thing the table shows is how modest the time saving is. A full Normal cycle is 41 minutes. Steam Fresh is 10. You are not shortening laundry day; you are adding a short optional step to the end of it, which is also why a steam dryer does not change the arithmetic on the how long does a dryer take page.
Towels, germs and the two claims that do not hold
Two honest corrections, and they are the reason this page exists rather than a feature list.
Steam cycles are not for towels. GE’s wording is flat: “Steam cycles help reduce wrinkles in clothes; however, they are not intended for towels.” The reason is obvious once you say it out loud. A towel exists to absorb water. Spraying water at it and then tumbling it warm leaves you with a damp towel and no benefit, because a towel has no creases anybody cares about. Half the stock photography for this feature is a stack of towels.
Steam reduces bacteria. It does not sanitise on its own. LG’s own description of its most aggressive steam cycle is “this cycle reduces bacteria on laundry using TurboSteam” — reduces, with no percentage attached anywhere on the page. That is the same pattern this site found on the washing-machine side, where Samsung’s US documentation attaches no percentage to steam either and describes only a temperature. Where percentages do turn up, as they do on the Samsung listing further down this page, they are attached to a Sanitize cycle rather than to steam — a cycle that adds a long, hot run to the mist, and whose figures sit behind a footnote the listing never reproduces. Read it as a claim about the cycle, not about the vapour. When a manufacturer has a number for what mist alone does, the number appears in the marketing; the absence of one, in a document written by the firm selling the feature, is the strongest evidence available about what the feature does.
What does hold up is the third use, and it is the one nobody advertises: static. LG states it twice, for two different options — steam injected late in the cycle “to reduce the static electricity caused by dry fabrics rubbing together”, and a Steam Wrinkle Free cycle that “reduces static by adding steam to the end of the cycle then tumbling clothes without heat”. That is straightforward physics. Static builds because the fibres are bone dry; put a trace of moisture back and it stops. If you currently buy dryer sheets purely for static, a steam dryer genuinely replaces them.
So the three real uses are: relaxing creases in dry garments in small batches, lifting surface odour from something you do not want to wash again, and killing static without a sheet. That is the honest list. Everything else on the box is either the dryer’s ordinary heat doing ordinary work, or a claim with no number behind it.
What to settle before you compare models
Four decisions, and only one of them is about steam.
Where the water is coming from. If there is no spare cold outlet and no room for a Y, the feature is decorative. Settle this first because it is the only one that can make the purchase pointless.
Electric or gas, which the house decides for you. A 240-volt dryer outlet and a gas line are not interchangeable and neither is cheap to add. The full comparison is on the gas dryer vs electric dryer page; for this page it is simply the filter that halves your shortlist before steam is even mentioned.
Drum volume against your largest single item. Steam needs the garments to move and to touch warm air on both faces. A packed drum defeats the feature as surely as a disconnected hose.
Whether the sanitize cycle is a separate thing. On several models “Steam” and “Sanitize” are two different buttons doing two different jobs — one injecting mist, one simply running the drum hotter for longer. Buying for sanitize and getting steam, or the reverse, is an easy mistake to make from a listing.
Three steam dryers, split by what your laundry room already has
Three, because these are the three that pass this site’s selection rules today and genuinely carry a documented steam function. Everything else that came back in the search either had no steam at all despite the category, or carried the word in a title with nothing in the specification to support it.
Samsung DVE45B6300W/A3 7.5 cu. ft. electric — the one whose steam function is named on the specification, not just the title. Multi-Steam Technology, a Steam Sanitize+ cycle, sensor dry that sets time and temperature from the load rather than a clock, Wi-Fi through the SmartThings app for end-of-cycle alerts and remote start or stop, and 7.5 cubic feet of drum. Samsung’s wording for Multi-Steam is that it steams “away wrinkles, odors, and static” — the same three jobs this page arrived at from the mechanism, in the manufacturer’s own words. It is in full stock rather than scarce and sits at rank 14 in Clothes Dryers, the strongest demand position on this list. Electric, so it needs the 240-volt outlet, and the buy box belongs to a named third-party seller, Electronic Express, rather than Amazon itself, which is where a return would go. The Steam Sanitize+ figures on the listing — 99.9% of germs and bacteria, over 95% of pollen, 100% of dust mites — hang off a footnote the listing does not reproduce, and that cycle pairs steam with a long hot run, so none of those numbers describe what the mist does on its own.
GE GFD65ESSVWW 7.8 cu. ft. electric — the one whose steam behaviour is documented in public. Steam and Sanitize cycles, ENERGY STAR certified, Wi-Fi for remote monitoring, an aluminized steel drum, 7.8 cubic feet. The reason to prefer this one is not the spec sheet, which is unremarkable; it is that GE publishes the support article quoted at the top of this page, so before you buy you can read the manufacturer’s own description of what the mist does, what temperature the refresh cycle needs and how many garments it is for. That is rarer than it should be. Listing availability is scarce rather than full, so check it before planning a laundry room around it. The listing’s colour field and its title disagree with each other — confirm the finish on the product page rather than from the title.
LG DLGX8601BE 7.3 cu. ft. gas with TurboSteam — the gas option. 7.3 cubic feet, AI Sensor Dry, the dual-opening EasyLoad door, ThinQ app pairing, and TurboSteam, which is the implementation LG documents as refreshing fabrics and reducing wrinkles in half the time of its other steam settings. If the house has a gas line to the laundry, this is the one on the list that uses it, and gas is also the format that recovers heat fastest between loads. It is listed as scarce and sits at rank 250, so treat it as the named gas alternative rather than the safe default. Gas installation is not a DIY job and nothing on this site will tell you otherwise.
One product was rejected after passing every mechanical check: a full-size electric dryer whose title carries the words “with Steam” and whose specification list makes no mention of a steam function, a water inlet or a refresh cycle anywhere. A title is not a specification, and sending someone to buy a feature on the strength of two words is how a reader ends up with a dryer and a hose they cannot connect to anything.
The reader who should buy the same dryer without steam
If there is no second cold water outlet and no space for a Y-splitter behind the machine, buy the cheaper model and spend the difference on anything else. A steam dryer with the water off is an ordinary dryer with an extra button that does nothing, and that is the most common outcome this feature has.
If your weekly laundry is towels, bedding and children’s clothes, the manufacturer has already told you steam is not for the first category and creases are not an issue in the other two.
If what you actually want is less ironing on dress shirts, a handheld or standing garment steamer does that job better, on one shirt at a time, for a fraction of the money — and it does not need plumbing.
And if your real complaint is that drying takes too long, steam is the wrong aisle entirely. Long cycles are almost always airflow, and the fix is free: see dryer taking too long to dry.
FAQ
Does a steam dryer need a water hookup?
Yes, on every model that produces steam. LG’s installation guidance is that the dryer must be connected to the cold water tap with a new hose, at a supply pressure between 20 and 120 psi. Most laundry rooms need a Y-splitter on the existing cold valve, because the washer is already using it. The dryer will run perfectly well with the water disconnected — it simply will not steam.
Can a steam dryer dry wet clothes with steam?
No, and it is not meant to. The steam cycles are designed for garments that are already dry, which is why LG lists them with the dry level set to Off — they run on a timer rather than on the moisture sensor. A wet load goes on a normal drying cycle; steam is an optional step at the end or a separate short refresh.
Is a steam dryer worth the extra money?
It is worth it for three specific jobs: taking creases out of three to five dry garments in a short cycle, lifting surface odour from something you do not want to rewash, and stopping static without dryer sheets. If none of those three describes your week, buy the same dryer without the feature. If you currently iron shirts or buy dryer sheets for static, it earns its place.
Why can’t you put towels in a steam cycle?
Because GE says not to, and the reason is that a towel’s whole job is absorbing water. Adding a fine mist to a dry towel leaves it damp without fixing anything, since nobody is troubled by creases in a towel. Steam cycles are aimed at shirts, trousers and outerwear.
Does a steam dryer sanitise clothes?
It reduces bacteria. LG’s own wording for its most aggressive steam cycle is that it “reduces bacteria on laundry”, with no percentage published anywhere on the page, and Samsung’s US documentation similarly attaches no figure to steam on its own. The percentages you will see quoted, such as the 99.9% on Samsung’s Steam Sanitize+, belong to a sanitize cycle that runs hot and long as well as injecting mist, and the footnote behind them is not published with the claim. Treat a steam cycle as a freshening step, not as disinfection, and if sanitising is the actual requirement, look at what the cycle does with temperature rather than what it does with mist.
Will a steam dryer replace my iron?
Not for anything with a crease you want to keep, such as a dress shirt collar and cuffs or a pressed trouser line. It replaces the ironing you do only to undo storage creases and packing wrinkles, which for most people is most of it. A steamer is pressure-free and cannot set a crease; an iron can.
Do steam dryers need descaling?
No, because there is nothing holding hot water. The cold mist is sprayed straight into the drum and evaporated by the drum’s own heat, so there is no boiler and no tank to scale up. The part that does suffer from hard water is the small inlet valve orifice, which is why LG tells you to flush several gallons through the line before connecting it.
Hook up the water, or buy the cheaper model
Three things to take away.
The drum is the kettle. There is no boiler in a domestic steam dryer, which is why the feature is tied to a cold water line and to heat that is already there, and why it has nothing to do with the dryer’s ability to dry.
The published numbers are small and they are honest. Three to five garments on GE’s refresh cycle, ten minutes on LG’s Steam Fresh, a dry level of Off on all of them, and on Samsung’s steam function no figure at all. A feature sized for a hanging rail, priced like an upgrade.
And the deciding question is plumbing, not laundry. If the cold tap has room for a Y and you own shirts, the Samsung is the one on this list in full stock rather than scarce, at the strongest demand position of the three, with its steam function set out in the specification instead of implied by the title. If it does not, you already know the answer.
