Eight Sleep Pod 6 Review: I Love the Warm Bed, But the Cooling Has a Big Problem

The Eight Sleep Pod 6 is one of those products that sounds almost too good to be true when you first read about it. Imagine getting into bed and having the mattress already warmed up on a cold night, or being able to cool your side of the bed without disturbing the person sleeping next to you. It also tracks different aspects of your sleep, including heart rate, breathing, sleep stages and snoring, without requiring you to wear a watch or fitness tracker.

But there is a lot more to consider than the features shown in the adverts, especially when you see how much Eight Sleep charges for the system. The Pod 6 starts at $1,999 for the Solo version, while a standard Queen setup costs $2,899 before the subscription. Once you add the required Autopilot membership, the price becomes considerably higher.

I have been testing the Pod 6, and I have to say that I have a bit of a love-and-frustration relationship with it. The warmth is genuinely lovely, and getting into bed on a cold night has become something I look forward to. However, the cooling system is not as straightforward as it sounds, particularly if you live somewhere warm and do not have air conditioning in your bedroom. There are also questions about how quickly the mattress actually cools down and whether the system has made a noticeable difference to my sleep.

Here is what I found after using it.

What Is the Eight Sleep Pod 6?

The Eight Sleep Pod 6 is a smart mattress cover with a separate unit called the Hub. It is important to understand that you are not buying a new mattress. The cover goes on top of your existing mattress, underneath your mattress protector and bedsheets, so you can continue using the bed you already own.

Inside the cover are thin tubes that carry water around the mattress. There are separate networks for the left and right sides, allowing each person to choose a different temperature. The Hub heats or cools the water and sends it through those tubes, changing the temperature of the sleeping surface.

The system can adjust temperatures between 55°F and 110°F, which gives you a fairly wide range to work with. You can have a warm bed when the weather is cold, or lower the temperature when you want to sleep on a cooler surface. The two sides can also be controlled independently, which is particularly useful for couples who do not agree on the ideal sleeping temperature.

The Pod 6 also includes sensors that collect information about your sleep. Eight Sleep says the system tracks sleep stages, heart rate, heart rate variability, breathing and snoring. It uses this information to make adjustments throughout the night through its Autopilot feature.

There is quite a bit of technology involved, but the part I was most interested in was the temperature control. I wanted to know what it would actually feel like to get into a bed that could warm itself up or cool down while I slept.

What I Like About the Eight Sleep Pod 6

I will start with the part I genuinely enjoy because, despite my complaints, there is something very satisfying about this system.

The Pod 6 uses circulating water to adjust the temperature rather than relying on ordinary resistive heating coils. The cover has two networks of thin water-filled tubes, one for each side of the bed. A thick cable connects the cover to the Hub, which heats or cools the water before sending it back through the mattress cover.

The first time you get into bed and realise that the Pod has already warmed it up, you understand why people are willing to spend so much on this thing. I have found the warmth particularly lovely during colder nights. There is something about climbing into a bed that is already comfortably warm instead of having to wait under the covers for your body heat to do the work.

Honestly, this feature alone almost makes the price feel worthwhile. I have enjoyed it every night I have been testing the system, and it is probably my favourite thing about the Pod 6.

The other improvement I appreciate is the redesigned Hub. Compared with the previous Pod 4 and Pod 5 models, the Pod 6 Hub is about 50% smaller. This is a welcome change because the older units took up quite a bit of space, and finding somewhere to put them was not always convenient. The smaller design finally makes it possible to slide the Hub underneath the bed, so it is much easier to keep out of sight.

There are also physical buttons on the cover for making temperature adjustments. I like having this option because I do not always want to reach for my phone when I am already comfortable in bed. It is a small addition, but one that makes the system easier to use.

The Cooling Problem: The Hub Heats Up Your Bedroom

This is where my feelings about the Pod 6 change quite a bit.

The system is designed to cool your bed, and that sounds wonderful during hot weather. Nobody wants to spend the night tossing around because the mattress feels too warm. The problem is that the Pod 6 does not make heat disappear. It removes heat from the bed and releases it through the Hub.

That means the Hub produces warm air while cooling your mattress. In a bedroom with air conditioning, this may not be a major issue because the AC can remove the extra heat. But if you live somewhere warm and do not have air conditioning, you could end up making your bedroom even hotter while trying to cool your bed.

I found this to be a serious limitation. During summer, the Hub can make the room feel like there is a heater running nearby. Even if the mattress itself is cooling down, the surrounding bedroom is getting warmer. It becomes particularly unpleasant when the weather is already hot.

There is something frustrating about spending thousands of dollars on a system designed to help you sleep comfortably in the heat, only to find that you cannot use its cooling feature properly because the Hub is warming up the room.

I kept thinking that Eight Sleep should have made the cable between the mattress and Hub longer. That way, you could place the Hub outside the bedroom, perhaps in a hallway or another room, instead of having all that heat released next to the bed. I understand that moving water through longer tubing may create technical challenges, but it still feels like a missed opportunity.

For someone using the Pod 6 in a cold climate, this may not matter much. But if you live somewhere with hot summers and no bedroom air conditioning, I would think very carefully before buying it. The warming feature is lovely in winter, but the cooling feature becomes much less useful when the Hub makes the room uncomfortable.

Does the Pod 6 Cool Your Bed Instantly?

Eight Sleep says the Pod 6 adjusts temperatures 20% faster than previous generations. It also promotes a rapid cooling feature that is supposed to help when you suddenly feel too hot during the night.

The company describes this as a way to cool the bed quickly, including for people who experience nighttime hot flashes. On paper, it sounds like exactly what you would want. If you wake up feeling uncomfortably warm, you should be able to bring the temperature down without waiting ages.

However, my testing did not produce the kind of results I expected.

I used Bluetooth thermometers placed in the bed underneath the blankets to check how quickly the temperature actually changed. The idea was to measure what was happening between the sheets rather than simply rely on the temperature figures displayed in the app.

The results were not particularly impressive. In one test, the rapid cooling feature was supposed to reduce the temperature by 10 levels, which appeared as a 17-degree change in the app. But the temperature between the sheets took around 22 minutes to drop by just 5 degrees. It then took another 22 minutes to return to the original temperature.

That is a long time when you are expecting something described as instant cooling.

There is a reason for the difference between the app readings and what you feel in bed. Eight Sleep measures the water temperature inside its system, but the mattress, bedsheets, blankets and your own body all hold heat. Cooling the water does not mean the entire sleeping surface immediately reaches the same temperature.

I also repeated the test by lying in the bed and judging how the changes felt. The experience was much the same. I could tell that the temperature was changing, but it did not feel anything like an instant drop of 17 degrees.

I would not say the cooling does nothing. It is simply slower and less dramatic than the marketing might lead you to expect. If you are buying the Pod 6 mainly because you want immediate relief from nighttime heat, I would lower your expectations.

The Sleep Tracking and Automatic Temperature Adjustments

The Pod 6 is not just a temperature-controlled mattress cover. It also collects sleep data and uses that information to adjust the temperature throughout the night.

Eight Sleep says the system has 18 biometric sensors in a dual-zone setup, representing a ninefold increase in sensors per side compared with the previous generation. These sensors track information such as heart rate, heart rate variability, breathing, snoring and sleep stages.

The idea is that the system learns about your sleeping patterns and adjusts the temperature to help you stay comfortable. You do not have to keep getting up to change the settings because Autopilot makes adjustments automatically.

During my testing, the app generally showed around 15 to 20 temperature adjustments each night, with the settings moving roughly between 23 and 33 degrees on the scale displayed in the app. It is interesting to know that the system is making changes while you are asleep, and I like the idea that it is trying to keep the bed comfortable without requiring me to do anything.

But has it actually improved my sleep? Honestly, I am not sure.

I have had some good nights and some not-so-good nights with the Pod 6, just as I do with any other bed. I like knowing that the system is monitoring my sleep and making adjustments, but I cannot confidently say that I have started sleeping better because of it. The technology is impressive, but I would not confuse having more sleep data with automatically getting better sleep.

Eight Sleep Pod 6 Price: How Much Does It Really Cost?

This is where the Pod 6 becomes a much harder purchase to justify. Eight Sleep is not selling a cheap mattress accessory, and the subscription makes the total cost even higher.

The official starting prices are:

These prices are before taxes and shipping. The Solo version is designed for one sleeper, while the standard setup provides separate temperature control for two people.

Then there is Autopilot. Eight Sleep requires a membership for the first 12 months, with plans ranging from $199 to $399 per year depending on the level selected. This is not something you can simply ignore when calculating the real cost of ownership.

For example, the Queen version starts at $2,899, but the checkout price increases when you select the required Enhanced Autopilot plan. The amount you pay therefore depends on the membership option and any other selections made during checkout.

I do not like having to think about an annual subscription after already spending thousands on the hardware. The Pod 6 is an expensive product, and I would much rather see the main features included in the purchase price instead of having to keep paying to access the full experience.

Before ordering, check the checkout page carefully and look at the membership price, renewal terms and what happens if you decide not to continue after the first year. The advertised starting price is not the amount you should use when deciding whether you can afford this system.

Is the Eight Sleep Pod 6 Worth It?

I can see why someone would fall in love with the Pod 6, particularly if they struggle to get comfortable at night because their bed is too warm or too cold. The ability to heat or cool each side separately is useful, and the warmth is something I genuinely enjoy. The smaller Hub is also a welcome improvement because it finally fits underneath the bed.

But I would not recommend it to everyone.

The cooling system is my biggest concern. If you live somewhere hot and do not have air conditioning, the heat released by the Hub can make the bedroom uncomfortable. You could end up with a cooler mattress but a warmer room, which is not exactly what you want when trying to sleep through a hot night.

I am also not convinced by the rapid cooling claims. The system does adjust the water temperature, but the actual temperature change under the blankets takes considerably longer. If you are expecting the bed to cool down almost immediately, you may be disappointed.

Then there is the subscription. Paying $1,999 or nearly $3,000 for the hardware and still having to maintain an annual membership is a lot to ask. I would want to be certain that I was going to use the features regularly before committing to that kind of expense.

Final Verdict: I Love the Warmth, But the Pod 6 Is Not for Everyone

My experience with the Eight Sleep Pod 6 has been mixed, although there are parts of it I genuinely love. Getting into a warm bed on a cold night is wonderful, and the smaller Hub makes the whole setup more practical than previous versions. I also like the idea of having the temperature adjust automatically while I sleep, even though I cannot say that it has consistently improved my nights.

The cooling system is where I think Eight Sleep needs to do better. It is difficult to recommend a product for temperature-controlled sleep when the Hub can make an already hot bedroom even warmer. The cooling also takes longer to reach the sleeping surface than the instant-cooling language suggests.

And I cannot ignore the price. Once you include the required Autopilot membership, the Pod 6 becomes a very expensive mattress accessory with an ongoing cost attached.

Would I buy it? I love using it in winter, but I would hesitate to recommend it to someone living in a hot climate without air conditioning. If you mainly want the warmth, have the budget and are comfortable paying for the subscription, there is a lot to like. But if you are buying it for powerful cooling during hot summer nights, I would think twice. The Pod 6 is impressive, but it is not the perfect sleep solution that the price might lead you to expect.

Check out Necklow Sleep Pillow that I reviewed, earlier.