The Disadvantages of Adjustable Beds: An Honest List

Adjustable beds cost more than flat ones, they are heavy and awkward to move, they will not take a traditional inner-spring mattress, standard fitted sheets do not stay on them properly, and on a single shared mattress one person's movement is felt by the other. None of that is a reason not to buy one. All of it is worth knowing before you do, and most of it is fixable at the point of purchase rather than after.

We sell these beds, so read this with that in mind. We would still rather you knew the downsides now than discovered them in your bedroom, because a bed that turns out to be wrong for the room is an expensive thing to have delivered.

They cost more

An adjustable base has motors, a control board, a remote and a frame engineered to bend repeatedly without fatiguing. A flat base has none of that. The price difference is real and it is not a markup on the same object.

Adjustable beds in the Australian market run roughly from $5,000 to $24,000 for a queen or king, and from about $3,000 for a single. That band is wide because it covers genuinely different products — motor quality, frame construction, the mattress that comes with it, and what happens when something breaks. The cheapest end and the dearest end are not the same purchase.

What makes this a real disadvantage rather than just a price: you are also replacing a mattress you may have been happy with, for reasons covered below. The true cost is often the bed plus a mattress, not the bed alone.

You cannot use a traditional inner-spring mattress

This is the one people are least prepared for, and it is the most important thing on this page.

A single bend can permanently ruin a traditional inner-spring mattress. Not repeated bending over years — one. The interconnected spring system in a traditional inner-spring is built to hold a flat plane, and articulating it can deform that structure irreversibly the first time it happens.

So if you have an inner-spring mattress you like, an adjustable base does not extend its life; it ends it. Budget for a compatible mattress as part of the purchase, not as an optional extra you might get to later. Every Sophie adjustable bed includes a four-layer Australian-made foam mattress built for exactly this reason, but if you are buying a base elsewhere, ask the question directly and do not accept a vague answer.

They are heavy, and moving them is a job

An adjustable base is substantially heavier than a slat base, and it does not come apart the way a flat bed frame does. Moving house with one is a genuine logistical item rather than an afterthought, and shifting it across a room to vacuum is not a one-person task.

There is a related problem: the base needs a power point within reach, and the lead has to be routed so it never pulls tight as the bed articulates. That quietly constrains where in the room the bed can go, and in older houses with few power points it can be the deciding factor on bed placement.

Standard bedding does not work properly

Ordinary fitted sheets come off. The mattress bends, the sheet does not, and the corners let go — usually at the head end, usually in the middle of the night.

The fixes are straightforward but they are purchases: deep-pocket fitted sheets rather than shallow ones, and the correct size name when you order. A flat sheet and doona need to sit loose at the foot rather than being tucked under the mattress, because anything tucked in restricts how the foot section lifts. If you are house-proud about a tightly made bed, this will irritate you.

More detail in our guide to sheets for adjustable beds.

On a shared mattress, you share everything

A standard queen or king adjustable bed is one base under one mattress. If one person raises the head section, the whole mattress moves. If one person uses the vibration setting, both people feel it.

The answer is a split configuration — Split Queen, Split King or Split Cali King — where each side is an independent base with its own motor and remote, so nothing carries across. That is a real solution, but it is a decision to make at purchase, and it usually costs more than the single-base equivalent. Discovering you needed it afterwards is not a cheap correction.

More moving parts, more to go wrong

A slat base has nothing to fail. An adjustable base has motors, a control board, a remote and a power supply, and any of them can eventually need attention.

The motors also make noise. It is a low hum for a few seconds while the bed moves rather than a constant sound, and most people stop noticing it quickly, but in a quiet house at night it is audible and nobody should tell you it is silent.

What matters here is not whether something will eventually need service but what happens when it does. Ask whoever you are buying from whether a fault means a technician visits or whether you are freighting a bed base somewhere. Sophie beds carry a 5-year comprehensive warranty as standard, extendable to 10 years, with our own team doing the service.

Your existing bed frame may not fit

An adjustable base has to sit inside a bed frame with clearance to articulate, and plenty of frames have centre rails, fixed slats or a lip that get in the way. Some frames work perfectly. Some need a slat removed. Some will not work at all.

Measure before you order rather than after, and if you are keeping a frame you love, send the measurements to the supplier and make them tell you in writing that it fits.

No change-of-mind returns

We do not offer change-of-mind returns, and most suppliers in this category do not either. Your rights under Australian Consumer Law are unaffected and our warranty covers faults, but if the bed simply turns out not to suit you, that is not a return.

This is precisely why we bring the bed to your home and set it up before you buy anything. The demonstration is free and obligation-free, you spend 30 to 60 minutes with it, and it happens in the room the bed would actually live in rather than on a showroom floor. It is the only reliable way to find out whether you like it.

So is it worth it?

For a lot of people, yes — but the honest framing is that an adjustable bed is a considered purchase with real trade-offs, not an upgrade that is strictly better than a flat bed in every respect. It costs more, it weighs more, it constrains the room a little, it obliges you to replace a mattress and buy different sheets, and on a shared bed it raises questions a flat bed never asks.

Knowing all of that, the people who are happiest with them tend to be the ones who decided deliberately rather than the ones who were sold.

If you want to work out which camp you are in, call 1300 9 SLEEP (1300 975 337) Monday to Friday, 9am–5pm AEST, or see the Sophie adjustable bed range and the 25 adjustable bed myths.