7 Best Split King Adjustable Beds: Expert Reviewed

Saatva is the highest-rated brand on the market, offering split king adjustable beds with luxury features and in-home delivery at a fair, mid-range price.

• Price range: $2,090–$2,598
• Trial period: None.
• Warranty: One-year full warranty followed by a nine-year limited warranty for the Adjustable Base, five-year full warranty followed by a 20-year limited for the Adjustable Base Plus.
• Split sizes and dimensions (width x length): King (76 inches x 80 inches) and California king (72 inches x 80 inches).
• Weight capacity: 850 pounds each side.

• Adjustable Base: Head and foot adjustability, wireless remotes, removable legs, adjustable leg heights between 13–18 inches.
• Adjustable Base Plus: Additional massage features, wall-aligning design, custom and pre-programmed presets, Upper-Flex options, under-bed lighting.

Saatva is the Handbook Team’s top adjustable bed brand because it offers the right mix of style options, features, and services that address most people’s needs at a fair price. It also has the highest customer satisfaction of all competing brands, with more than 1,000 positive reviews on Better Business Bureau and Trustpilot.

Of the two Saatva models, we highly recommend the Adjustable Base Plus for couples because of its available styles and set of features. While both models offer split king options, the Plus comes in split California king and standard split king or queen Upper-Flex options for the same price or similar ($2,598 and $2,498, respectively).

Upper-Flex is the brand’s split-top style that independently adjusts the head for each sleeper while the foot adjusts as one unit. We only recommend split-top styles if you need to elevate your head to alleviate snoring or acid reflux and want to keep the rest of the base whole for more comfortable cuddling without an annoying mattress gap.

All split and Upper-Flex models come with a remote for each side to independently adjust your position and massage settings, so you don’t need to battle over the remote to adjust your side.

The Adjustable Base Plus comes with multiple pre-programmed positions:

• Head up: Fully elevates the head to a seated position.
• Flat: Returns the base to a fully flat position.
• Anti-snore: Elevates the head to 7 degrees to open the airway and reduce snoring.
• Zero gravity: Elevates the head and legs for a cradled position.

 You also get many other features, including

• Memory presets: Program one custom position on your remote’s memory button.
• Head, foot, or full-body massage: Choose up to three intensities to promote relaxation.
• Under-bed lighting and remote flashlight: Light up a dark room to avoid tripping.

Wall-aligning design: Elevate the head of the bed without distancing yourself from the nightstand.

Saatva Adjustable Base Plus in the zero-gravity preset

Saatva ticks most of our boxes except for one: a trial period. The industry standard excludes trial periods and returns because adjustable bases are difficult to move and ship. Although some brands, like Serta and Nectar, still offer them to help you decide if the product is right for you.

But we like that Saatva offers a compromise. If you and your partner dislike the split mattresses and the separation between you, Saatva told us they would exchange the two mattresses for one king and guide you through syncing the entire base to work as one unit. This transforms your split king adjustable bed into one king-size adjustable bed, so you and your partner sleep on one large adjustable surface.

Another perk, Saatva also offers white glove delivery (delivering and setting your base) for free, so you don’t have to worry about setting up the base by yourself. Our team found most other brands charge for this service or don’t offer it at all, so this is a major standout service included with your purchase.

The Nectar Adjustable Frame offers a 50-night trial period, opportunities to extend your full-coverage warranty by 10 years, and a chance to reduce total cost.

• Price: $3,596
• Trial period: 50 nights.
• Warranty: Three-year limited warranty.
• Split sizes and dimensions (width x length): Split king (78 inches x 80 inches x 15 inches).
• Weight capacity: 700 pounds each side.

• Nectar Adjustable Frame: Head and foot adjustability, remote or app controls, zero gravity, anti-snore, TV recline position, reading position, massage, USB-A ports, built-in remote flashlight, removable legs, adjustable leg heights between 3–8 inches with 2-inch extenders.

We found the Nectar Adjustable Frame is a valuable purchase for couples who want a split king because it offers what many brands don’t: a chance to extend your warranty to cover accidental damage and a 50-night trial period to test your base at home.

You can only initiate returns after a 30-day “adjustment period” to allow your body to adapt to the product. While the 30-day rule seems like unnecessary red tape, some adjustable bed owners who participated in our in-house focus group highlighted that it could take anywhere from a day to a few weeks to determine if the base improved their sleep quality.

While we don’t like that Nectar only offers a short three-year manufacturer’s warranty with your purchase, you can opt to extend your warranty by 10 years with full coverage. This is ideal if you have children and pets who love climbing over (and under) your bed. Ten years is still relatively short, but no other brand in this review offers full coverage for this length of time.

We don’t like how Nectar doesn’t currently offer in-home delivery for split king adjustable frames, but they did at one time. A member of the Handbook Team bought their split king Nectar adjustable base three years ago with white glove delivery, and they were glad they did because the base was heavy.

For now, the brand outsources this service to Handy.com, where you can get 10 percent off your appointment (about $100–$200 before the discount). However, we advise you to monitor the job if you use this service. A team member had a negative past experience with a Handy cleaner who came to their apartment, hung out while at work, and didn’t clean anything.

DreamCloud’s adjustable base stands out for its advanced features, including a quiet massage function, zero-gravity, anti-snoring, and other presets, USB ports, programmable memory, and more. The DreamCloud adjustable bases are covered under their 3-year limited warranty, protecting buyers from manufacturing defects.

• Price range: $1,090-$1,798
• Trial period: 50 nights.
• Warranty: 3 years.
• Split sizes and dimensions (width x length): 78 x 80 inches.
• Weight capacity: 750 pounds.

Adjustable Base: Independent head and foot adjustability, wireless remote or app control, one-touch settings (anti-snore, TV recline, etc.), 3 massage settings, 4 USB ports, 8 and 3-inch legs with 2-inch extenders included.

We found the DreamCloud split king adjustable bed and mattresses to be a mid-ranged price option that’s especially ideal for couples looking for extra features like multiple preset positions, 3 different massage intensities, USB ports, and programmable memory, all controlled from the base’s wireless remote or an app on your phone.

DreamCloud’s adjustable split king base takes two twin mattresses. If you choose to top your base with a DreamCloud mattress, you can learn about their different styles in our DreamCloud mattress review. We find DreamCloud’s memory foam mattresses offer a firm feel and support that keeps the sleeper comfortably on top of the mattress. We like this mattress for combination sleepers who prefer to switch positions when they sleep.

DreamCloud’s hybrid and memory foam mattresses also contain cooling gel that helps keep hot sleepers more comfortable at night. A premium in-home setup of two items costs $199, but if you need more (like two mattresses and the base), each additional item costs an extra $49.

We do feel sleepers over 250 pounds may risk sinking into the memory foam mattress more, which may exacerbate issues like back or hip pain. We also find DreamCloud’s mattresses rate low for edge support-how much the mattress maintains its structure and shape on the edge of the mattress-but with a split king, that particular issue may be reduced with the smaller mattress size.

Brooklyn Bedding’s adjustable bases are high in quality while remaining affordable. Offering a slim design, high weight capacity, and easy, no-tool assembly, Brooklyn Bedding’s bases also include several upgraded features, like USB ports, anti-snore and zero-gravity presets, and a wireless remote.

• Price range: $624-$1,162
• Trial period: 120 nights.
• Warranty: 10 years.
• Split sizes and dimensions (width x length): 36 x 84 inches.
• Weight capacity: 850 pounds.

• Ascension Luxe Adjustable Base: Split King or Split Cal King sizes available, wireless remote, presets.
• Ascension Ultra Adjustable Base: Split King or Split Cal King sizes available, under-bed LED lighting, 2 USB ports, wireless remote, presets.

Our testing finds that Brooklyn Bedding mattresses are mid-range in firmness and edge support, with higher marks for cooling properties. We also find their mattresses ideal for combination sleepers and back sleepers, because they tend to be on the softer side, allowing for a bit of give as you move. The additional quilt pillow top upgrade provides what our tester said was “a superficial hammock feeling” that “feels nice.” Our tester also commented that Brooklyn Bedding mattresses in general seem to strike a “great balance” between support and pressure relief” if you’re looking for a mixture of the two. If you choose the Ultra Adjustable Base with your mattress, you’ll also get the addition of three different massage settings.

Shoppers should also note that when you select some of the mattress from the Brooklyn Bedding website, the option to upgrade with a “cloud pillow top” to each mattress is already selected, so if you don’t want the upgrade, you should select “no” from the dropdown to see the lower price reflected. Additionally, for any of the split king beds, the website instructs you to order two of each mattress to create the split king, so you’ll need to double the price for your final cost.

Brooklyn Bedding’s site advertises the adjustable power base as the “slimmest” on the market. The Ultra version comes with plenty of extra features, like under-the-bed LED lighting, three massage settings, preset positions, USB charging ports, and the capacity to hold up to 850 pounds per couple.

Couples with completely different sleep preferences will likely benefit most from a Sleep Number mattress and adjustable base combination because they can fully customize each side’s firmness and position.

• Price range: $2,199–$4,199
• Trial period: 100 nights for mattresses only.
• Warranty: One-year full, followed by 14-year limited.
• Split sizes and dimensions (width x length): King (76 inches x 80 inches) and California king (72 inches x 84 inches).
• Weight capacity: 400 pounds each side.

• FlexFit 1: Head adjustments, mobile app controls, under-bed lighting, Partner Snore feature, removable legs, adjustable leg height between 13.75–18.25 inches.
• FlexFit 2: Additional foot adjustment and zero-gravity position.
• FlexFit 3: All of the above plus foot warming.

The Handbook Team chose Sleep Number as the best mattress and adjustable base combination for those who want total control over their sleep preferences without affecting their partner’s comfort. Not only can you adjust your split king positions on either side, but you can also adjust the mattress firmness to your own liking. This is ideal for couples with completely different sleeping needs or if your preferences change occasionally.

We also love how this brand offers a similar variety of split sizes and styles to Saatva, plus an additional FlexTop (split-top) California king size, but we don’t like that they’re about $1,000 more expensive compared to Casper and Serta.

Sleep Number FlexTop king adjustable beds only split at the head.

Sleep Number uses unique air chamber mattresses, allowing you to adjust firmness by emptying or filling the chambers at the touch of a button. When our Handbook Team tried this mattress, we could feel the mattress adjusting firmness under our bodies. Sleep Number representatives said your “sleep number” setting is the number that relieves most of the pressure under the hips and shoulders in your preferred sleeping position, which is determined in-store using a pressure mapping system.

The SleepIQ app lets you control all three Sleep Number bases to adjust mattress firmness and adjustable base position through your phone without a physical remote. This is the only brand that charges you for the remote ($49 each). While we understand the convenience of having the controls on your phone, studies agree you should limit blue light exposure through your phone before bed to improve sleep quality. Forcing users to use their phones before bed or in the middle of the night seems counterintuitive to sleep improvement.

Whether you have a physical or mobile app remote, you and your partner will have control over your own side unless you’re using the Partner Snore feature, which allows you to control your partner’s head elevation to alleviate their snoring, so you both sleep soundly with minimal disturbance.

The app also provides sleep-tracking insights, like how long you slept and how restful it was, by decoding your heart rate and breathing patterns through the mattress’s sensors. This can help you identify settings that improve your sleep patterns. But if you’re truly interested in sleep tracking, the Handbook Team encourages you to consider Tempur-Pedic’s bed and accompanying app instead because of its sleep coaching and smart alarm features.

Unfortunately, Sleep Number adjustable bases have no trial period, but the mattresses do. You can try a mattress for 100 nights and return it anytime after the thirty-day adjustment period. Both products have the same 15-year warranty period.

What our testers say: “I loved having so much control over my bed’s firmness and positioning. It’s easy to make adjustments, and it’s nice knowing that my preferences won’t disturb my partner. However, because I was only shopping for an adjustable base, the customer representative advised us to shop for other brands since Sleep Number beds function best with the Sleep Number mattress. I appreciated the honesty.”

Tempur-Pedic has an impressive lineup of high-tech bases with smart features designed to improve your comfort and sleep quality.

• Price range: $1,798–$4,798
• Trial period: None.
• Warranty: Three years full, 22 years limited.
• Split sizes and dimensions (width x length): King (75 inches x 79.5 inches); California king (71 inches x 83.5 inches).
• Weight capacity: 650–850 pounds.

• Ease Power Base: Head and foot adjustment, wireless remotes, zero-gravity preset, removable legs, adjustable leg height between 3–12 inches.
• TEMPUR-Ergo Power Base: Additional lumbar support adjustment, QuietMode anti-snore position, massage, under-bed lighting, USB-A and USB-C ports.
• TEMPUR-Ergo Smart Base: All of the above plus Snore Response, sleep coaching, and smart alarm.
• TEMPUR-Ergo ProSmart Base: Additional SoundScape Mode and WindDown Programs.

Tempur-Pedic offers the most technical adjustable bases on the market. High-tech beds aren’t everyone’s cup of tea, but we enjoyed the extra sleep-tracking benefits of some of these smart bases because they provide insights and suggestions to improve your sleep. According to Carli Streich, LPC, founder and owner of Cognitivve Neurofeedback in Colorado Springs, Colorado, improving sleep quality will foster healthy minds and relationships by helping you regulate emotions and communicate better with your partner.

Note: The Ease Power Base is the most basic model without the technical features, but if you’re looking for a simple and more affordable design, go with Casper or Serta instead. Other bases in the Tempur-Pedic lineup gain more features with each upgraded model, as listed above.

Many features are unique, including

• Lumbar support: An adjustable bar that elevates up to 6 inches to provide low back support.
• QuietMode: A trademarked anti-snore preset, elevating up to 12 degrees.
• Snore Response: Snoring is detected through bed vibrations, then the bed raises the head to the QuietMode position.
• Sleep coaching: AI-powered sleep analytics that provides individualized strategies on ways you and your partner can sleep better.
• Smart alarm: A function that uses sleep data to wake you and your partner according to your sleep cycles using natural sounds and vibrations through the base.
• SoundScape Mode: Built-in speakers allow you and your partner to feel your favorite sounds through speakers that vibrate on each side.
• WindDown Program: A cycle of different positions and massage settings to help you relax.
• Smart home connectivity: Bluetooth links your base to your Google Home or Amazon Alexa.

Tempur-Pedic Ergo bases have lumbar support, which elevates to the maximum 6-inch height depicted above.

The Smart and ProSmart Bases are the only models that connect to the Sleeptracker-AI app and provide sleep-tracking analytics and coaching. “Sleep tracking can provide valuable insights into sleep patterns and quality, which can lead to significant improvements in sleep, mood, and general well-being. By monitoring factors such as sleep duration, sleep stages, and disturbances, you can identify patterns and potential issues affecting their sleep,” says Streich.

Sleeptracker-AI provides sleep insights by sensing changes in your vitals throughout the night.

We had a chance to browse the Sleeptracker-AI app with a customer representative at a big-box store. The app was easy to use, and sleep insights were easy to read. But the biggest standout of the Sleep Number SleepIQ app was the sleep coaching and smart alarm features because it does more than analyze your sleep—it provides actionable, individualized ways to improve it.

We also like that white glove delivery is always included at no extra cost because technicians teach you how to connect and use the base’s features.

Although customer representatives assured the Handbook Team that every base functions independently from Tempur-Pedic mattresses, they also said they don’t test their base with other mattresses, so the reps couldn’t confidently say how they’d work if you mix and match.

What our testers say: “The adjustable lumbar support bar goes very high. I have a smaller build and was only able to tolerate about one-third to one-half of the height for comfortable low back support. But I think this bar has an additional benefit … I can scoot down the surface and target my upper back for a nice backbend stretch after sitting all day for work.”

Serta offers a 120-night trial period for all three adjustable base models (the longest in the industry), but you have to make the purchase online. We recommend Serta if you want an extended trial period or if you’re a couple who needs an affordable split California king size.

• Price range: $1,198–$1,398
• Trial period: 120 nights.
• Warranty: 20-year limited.
• Split sizes and dimensions (width x length): Split California king (Motion Air: 72 inches x 84 inches x 12 inches; Motion Essentials: 70.9 inches x 83.5 inches x 16 inches).
• Weight capacity: 750 pounds each side.

• Motion Air Adjustable Base: Head and foot adjustability, wireless remotes, adjustable leg heights between 3–12 inches.
• Motion Essentials Adjustable Base: Additional flat and zero-gravity presets, USB-A & USB-C ports to charge devices.

Serta is the only brand that offers a 120-night trial on all its adjustable bases when you buy online. Investing in a new bed can be stressful, especially if you’re dealing with chronic pain and want to ensure the bed will help. Opting for brands with long trial periods is a risk-free way to thoroughly test your adjustable base at home before fully committing.

It’s important to note the 120-night trial period and 20-year limited warranty only apply to online purchases through the Serta website. We had trouble finding Serta adjustable beds because they aren’t in many big-box stores, and Serta doesn’t have a showroom. But when we finally located a Serta adjustable base in a Mattress Firm, we were told it came with a three-year full warranty and no trial period. When we called Serta customer service for clarification, an agent told us that retail partners may have different terms. We think this is confusing for shoppers, so if you’re shopping from a third-party retailer, cross-check the price, trial period, and warranty with the brand to ensure you’re receiving the best deal.

Similar to Nectar, Serta encourages buyers to keep their base for a month before initiating a return to allow the body to adjust. If you decide to return it, your process will look different depending on the original delivery service Serta recruits to do the job: RXO Logistics or FedEx deliveries. RXO Logistics is a delivery partner that will call three days after you start your return to schedule a date for removal. FedEx deliveries don’t have a removal process, so you’ll receive guidance on donating your base to a new home.

While the Motion Air model offers one of the most affordable split California king bases on the market at $1,198, it’s also one of the most basic, offering only head and foot adjustability and adjustable-height legs. The Motion Essentials model lacks luxury features despite being similarly priced ($1,398) to brands with advanced features, like massage or under-bed lighting. But we loved how whisper-quiet the base sounded in the store, which is great for light sleepers.

What our testers say: “The Serta Essential Adjustable Base doesn’t have a TV/lounge preset that elevates the head to a fully upright position, but you can adjust it manually to a fully seated position using the remote buttons.”