Sleep

Orion Sleep Review: A Water-Cooled Smart Mattress Cover With Dual-Zone Control and No Wearable

A heating and cooling mattress cover for your existing bed, with wearable-free sleep tracking as an option.

InhouseHeal editorial teamUpdated 4 min read
Illustrative restful sleep photo for our Orion Sleep review
Illustrative photo. Products shown may not be from Orion Sleep.
Quick verdict

Orion Sleep turns your current mattress into a temperature-controlled bed, with each side set independently from about 50°F to 113°F. It is a serious investment, but it comes with a 30-night trial, a two-year warranty and core features that work without a subscription. The optional Orion Intelligence plan adds wearable-free sleep tracking for $250 a year.

What we like

  • Wide heating and cooling range of about 50°F to 113°F
  • Dual-zone control so partners can set different temperatures
  • Fits over an existing mattress 10 to 16 inches deep
  • Core scheduling and controls work without a subscription
  • 30-night trial, free shipping and a two-year limited warranty

Keep in mind

  • High upfront cost, well into four figures depending on size
  • Advanced sleep tracking requires a $250-a-year subscription
  • Cover is spot-clean only, not machine washable
  • Only sold in Queen, King and California King, and needs a bedside tower and outlet

Temperature is one of the most overlooked parts of sleep. Many people sleep best in a cool room, yet bodies, bedding and partners rarely cooperate. Orion Sleep tackles the problem at the mattress itself: a thin Smart Cover with water channels sits under your fitted sheet, and a bedside Control Tower pumps temperature-controlled water through it all night.

The system can cool or warm each side of the bed independently, and an optional subscription adds sleep tracking without anything to wear. We looked at how it works, what it costs and whether it is worth the investment.

How the Orion system works

There are two parts. The Smart Cover fits over your mattress like a fitted sheet, with a breathable polyester and bamboo blend on top and stretch material at the sides. The Control Tower, roughly 24 by 9 inches, sits beside the bed, plugs into one outlet and circulates water through the cover at your chosen temperature. Orion says setup takes under 15 minutes.

Because it uses water rather than fans or refrigerant blowing air, the effect is direct and quiet contact cooling or warming. The range is about 50°F to 113°F, and each side of the bed has its own temperature profile and schedule.

The $25 sleep test and Orion Intelligence

One unusual feature is a $25 sleep test. It is a one-night adhesive sensor patch that maps your temperature and sleep interruptions, followed by a report and a consultation with an Orion advisor. If you go on to buy the full system, the results can be used to pre-program your settings.

For anyone unsure whether temperature is really the problem, this is a low-cost way to find out before spending four figures.

Orion Intelligence and sleep tracking

The system includes sensors that can track sleep stages, heart rate, heart rate variability and movement without a ring or watch. Advanced tracking and personalized recommendations sit inside Orion Intelligence, an optional plan priced at $250 a year (monthly options have been listed from about $20). It also includes water purification tablets and early access to new features.

Importantly, you do not need the plan for the basics. Scheduling, automatic on and off, guest access, support and the warranty all work without it.

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Price, financing and policies

Orion does not hide that this is a premium product. The full system costs well into four figures depending on mattress size and promotions, and the brand advertises financing from about $62 a month with $199 down. Seasonal offers have included discounts of several hundred dollars.

  • Trial: 30 nights, starting the day it arrives.
  • Warranty: two-year limited, with extended protection available at checkout.
  • Shipping: free on every order.
  • Sizes: Queen, King and California King, for mattresses 10 to 16 inches deep.

Why bed temperature matters

Your core body temperature naturally drops in the evening as part of the process of falling asleep, and it rises again toward morning. A bed that traps heat can work against that rhythm, leading to tossing, sweating and lighter sleep. Turning down the thermostat helps, but it cools the whole room, including the partner who already feels cold.

That is where a temperature-controlled surface earns its keep. By cooling or warming only the area you sleep on, Orion lets each person set a temperature that suits them without fighting over the thermostat. A common approach is to start cooler at bedtime, hold a steady temperature during the night and warm slightly before your alarm so that waking feels more natural.

Temperature control is not a cure for every sleep problem. Stress, caffeine, alcohol, irregular schedules and conditions such as sleep apnea all play a role. But for people whose main complaint is waking up hot or cold, it addresses the issue directly, and the $25 test can help confirm whether temperature is really what is disturbing your nights.

Things to know before you order

Measure your mattress depth to confirm it falls within the 10 to 16 inch range, and plan where the Control Tower will sit. It needs floor space and a nearby outlet, and the hoses run from the tower to the bed. The cover is spot-clean only, so a breathable mattress protector or regular sheet changes help keep it fresh.

Use the trial properly. Try a few temperature schedules, for example cooler at bedtime and slightly warmer toward morning, and note how you feel over at least two weeks before deciding.

Who it is for, and how it compares

Orion is aimed at hot sleepers, people who wake up sweating, those who are always cold and couples whose temperature preferences clash. It also appeals to anyone who wants sleep data without wearing a device to bed.

The closest comparison is Chilipad by Sleepme, another water-based system with a similar temperature range and dual-zone options. Orion's wearable-free tracking and $25 starter test are its distinguishing features. If your budget is tighter, simpler changes such as breathable bedding, a cooler room or a blackout mask from Manta Sleep may be worth trying first.

Our verdict

Orion Sleep is a well-thought-out temperature system with sensible policies, from the 30-night trial to a core experience that does not depend on a subscription. The price and spot-clean cover keep it from a higher score. If temperature is genuinely disrupting your sleep, it is one of the most complete solutions available.

Orion Sleep products at a glance

ProductWhat it isPrice
Orion Sleep SystemWater-cooled and heated Smart Cover plus bedside Control Tower with dual-zone control.from about $62/month with $199 down
Sleep Disruption TestOne-night adhesive sensor patch with a report and advisor consultation.$25
Orion IntelligenceOptional plan for sleep-stage, heart rate and HRV tracking with personalized recommendations.$250/year
Extended protectionOptional cover beyond the standard two-year limited warranty, offered at checkout.—

Prices as listed on the brand's site at the time of our research and may change. Check the store for current pricing.

Health noteIf you have reduced sensation, diabetes-related nerve issues or circulation problems, ask your doctor before using a heated or cooled mattress cover. Night sweats that are new or severe should be checked by a healthcare professional.

Orion Sleep FAQs

Does Orion Sleep work with my current mattress?

It is designed to fit over existing Queen, King and California King mattresses that are 10 to 16 inches deep, under a regular fitted sheet.

Do I need the Orion Intelligence subscription?

No. Temperature control, scheduling, auto on and off, guest access and the warranty work without it. The subscription adds advanced sleep tracking and recommendations.

Can each side of the bed be set differently?

Yes. The system has dual-zone control, so each sleeper can have their own temperature and schedule.

What is the trial period?

Orion offers a 30-night trial that begins on the day the system arrives, plus free shipping.

Can I machine wash the cover?

No. The Smart Cover is spot-clean only, so use a fitted sheet and change it regularly.

Orion Sleep · 4.4/5
Hot or cold sleepers and couples who disagree on bedroom temperature
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Disclosure: InhouseHeal may earn a commission if you buy through links on this page. Our score is based on research of the brand's products, evidence, pricing and policies. How we review.

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