Do Smart Beds Really Improve Sleep?

Smart beds may make sleep more comfortable, particularly when you and your partner prefer different firmness or temperatures. Whether they produce a meaningful improvement in sleep is a separate question. The research is promising in places, but it does not justify treating a higher app score as proof of better health.

Three questions matter: Does the bed solve your comfort problem? How accurately does it measure sleep? And does using it improve sleep in a well-designed study? Evidence for one does not automatically answer the others.

What a smart bed actually changes

The label covers different products. Sleep Number smart mattresses offer adjustable firmness and app-based sleep insights; some have separate adjustments for each side. Heating and cooling depend on the model or accessory, rather than being standard across the range. (Sleep Number features) (SmartTemp features)

Eight Sleep's Pod is a water-based heating and cooling mattress cover, not a replacement mattress. Its Autopilot feature adjusts temperature automatically. Other products focus on position: Tempur-Ergo Smart bases can respond to detected snoring by adjusting the bed. These are feature descriptions, not evidence that the products treat a sleep disorder. (Pod temperature features) (Autopilot controls) (Tempur smart-base features)

Start with the specific discomfort you want to change rather than the number of sensors or settings advertised.

An accurate measurement is not a treatment result

A Sleep Number-funded study published in 2022 compared bed measurements with polysomnography, a laboratory sleep study, in 45 adults who described themselves as normal sleepers. Each slept alone for one laboratory night. The system correctly identified 94% of sleep periods but only 48% of waking periods. Overall accuracy was 86%. (Sleep Number validation study)

That imbalance matters: a device can recognize sleep reasonably well while missing much of the time someone is awake. The study assessed sleep versus wakefulness, not the accuracy of individual sleep stages. It also did not test whether buying the bed improved sleep. All authors were company employees with patent interests.

The measurements were collected in 2016. Results from older hardware and software cannot automatically validate the model or algorithm sold in 2026. Treat an ordinary consumer sleep score as an estimate, not a clinical verdict.

Temperature control studies show mixed results

An independent, university-funded 2025 trial studied 34 healthy, physically active adults using an Eight Sleep Pod 3. After familiarization, participants spent seven nights with temperature control on and seven with it off, in randomized order. They reported better sleep quality and thermal comfort with temperature control. However, researchers found no statistically significant differences in objective sleep measurements or heart rate, heart rate variability, and breathing rate. (Independent Pod 3 trial)

Sleep was estimated using a Fitbit Charge 5 rather than polysomnography. Participants knew whether temperature control was active, so expectations could influence ratings. The study was short and did not test people with insomnia. Its findings support a perceived benefit without establishing an objective sleep improvement in that sample. They also do not prove that nobody benefits.

A 2024 Eight Sleep-funded study analyzed 54 adults at home. Participants completed a week with temperature control off, then a week on, followed by two nights off. Researchers reported changes in selected sleep stages under particular temperature settings, alongside lower sleeping heart rate and higher heart rate variability. Sleep stages were measured on eight nights using a home sleep-test device. Total sleep time and sleep efficiency did not improve significantly overall. (Manufacturer-funded Pod study)

The fixed sequence, short duration, lack of blinding, and authors' employment, ownership or consulting ties limit confidence. Changes in these measurements do not demonstrate prevention of cardiovascular disease or treatment of insomnia.

A separate 2025 study tested a KyungDong Navien thermal mattress system in 25 adults over three laboratory nights using polysomnography. After baseline, the order of constant and adaptive temperature control was randomized. Average total sleep increased from about 356 minutes at baseline to 383 minutes with adaptive temperature control. However, baseline always came first, so becoming accustomed to the laboratory could partly explain the difference. The study was industry-funded and small. It suggests objective improvements are possible in a specific setup, not that Sleep Number or Eight Sleep provides the same result. (Adaptive thermal mattress study)

Read the fine print behind extra minutes

Sleep Number's claim of 28 more minutes of restful sleep comes from comparing owners who engaged more with certain features against owners who had those features but used them less, using 2021–2022 SleepIQ data. It was not a randomized comparison with a conventional mattress. (Manufacturer claim footnote)

A reasonable concern is that the groups may differ in other sleep-related habits or characteristics. That is a possible explanation, not a demonstrated cause of the result. The claim is therefore not a reliable promise that a new buyer will gain 28 minutes.

This targeted review did not identify independent head-to-head trials establishing superiority among Sleep Number, Eight Sleep, and other smart-bed brands.

When a bed is not the right next step

Persistent sleep trouble deserves assessment rather than repeated equipment upgrades. Cognitive behavioral therapy for insomnia, or CBT-I, is generally the first treatment recommended for long-term insomnia. A smart bed has not been established here as a substitute. (NHLBI insomnia treatment)

Breathing pauses, frequent loud snoring, gasping, or daytime sleepiness warrant discussion with a healthcare professional; a sleep study may be needed. A reassuring bed score or quieter snoring does not establish that obstructive sleep apnea is absent or cured. (NHLBI sleep apnea symptoms)

Make any trial answer a practical question

Before spending heavily, consider whether simpler bedding or room-temperature changes could address the discomfort. If you trial a smart bed:

• Keep a brief sleep diary before and during the return period. Record comfort, awakenings, and how you function the next day, rather than chasing nightly scores.
• Change one feature at a time where practical. Decide whether the improvement is noticeable and worth the cost to you.
• Check whether the mattress and base have separate return terms, and ask about fees and ongoing subscriptions.
• Review compatibility, noise, cleaning, maintenance, service costs, offline controls, and how sleep data can be accessed or deleted.

If checking metrics makes sleep more stressful, reduce the checking and discuss persistent concerns with a clinician. (Sleep-tracking case series) The most useful outcome is a sustained improvement you notice in bed and during the day, not simply a more impressive dashboard.

References

1. Sleep Number. Get to Know Your Sleep Number 360 Smart Bed. Manufacturer feature information.

2. Sleep Number. Using SmartTemp Programs. Manufacturer feature information.

3. Eight Sleep. Bed cooling. Manufacturer feature information.

4. Eight Sleep. How to turn Autopilot on or off. Manufacturer feature information.

5. Tempur-Pedic. Smart bases and snoring. Manufacturer feature information.

6. Siyahjani et al. Sensors. 2022;22(7):2605. Smart-bed measurement validation study.

7. Stevenson et al. Clocks & Sleep. 2025;7(4):55. Randomized crossover study of the Pod 3.

8. Moyen et al. Bioengineering. 2024;11(4):352. Temperature-controlled mattress-cover study.

9. Kim et al. Healthcare. 2025;13(19):2521. Adaptive thermal mattress study.

10. Sleep Number. User guide and marketing-claim footnote. Manufacturer material.

11. National Heart, Lung, and Blood Institute. Insomnia treatment.

12. National Heart, Lung, and Blood Institute. Sleep apnea symptoms.

13. Baron et al. Journal of Clinical Sleep Medicine. 2017;13(2):351–354. Case series on sleep-tracking concerns.