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Sometimes one mattress simply can’t meet the needs of co-sleepers. If that’s the case, a split king adjustable bed may be a good solution.

To create a split king bed, manufacturers place two twin XL beds next to one another, so sleep partners can customize their sleep experience with a mattress that works well for their body type and sleep position. Additionally, since no motion transfers between the beds, couples aren’t bothered by their partner’s movements.

An adjustable split king base adds even more options, allowing users to change the head and foot positions on each side of the adjustable split king independently. Sleepers can raise or lower the bed to reduce snoring, prevent leg swelling, or increase comfort.

We’ll equip you with all the information you need to choose the best split king adjustable bed for you, including discussing our top picks for the best adjustable bed frame for a split king mattress and answering common questions about adjustable beds.

In-Depth Reviews

  • Pros

    1. Zero-gravity setting elevates feet above head

    2. Customizable massage feature

    3. Free White Glove Delivery

  • Cons

    1. Some sizes exclusively compatible with Saatva mattresses

    2. No sleep trial or return period

Sizes

Twin, Twin XL, Full, Queen, King, Split King, California King, Split California King

Sleep Trial

None

Warranty

25 Year, limited 5 years for electrical parts

The name Saatva has come to epitomize luxurious, handsomely crafted sleep products. One of Saatva’s newest additions, the Adjustable Base Plus, fits in nicely with the brand’s current lineup. Designed for superior range of motion and equipped with a slew of high-end features, the base should serve the needs of anyone hoping to get the most out of a split king adjustable bed.

Notable Features

Standard split king Adjustable Base Plus models include wall-hugging technology. This feature is intended to keep your bed equidistant from your nightstand at all times, even as you’re adjusting your side of the bed. The base is also available in an “Upper-Flex” design that’s exclusively compatible with Saatva’s Solaire airbed. Upper-Flex bases do not have the wall-hugging technology.

Other features found on both standard and Upper-Flex models include anti-snoring and zero-gravity presets, under-bed lighting, and a thin bar at the foot of the bed to secure your mattress. A built-in wave massage can be programmed for head, leg, or full-body at three different speeds. Our team also found the base relatively quiet when in use.

How It Performed

The anti-snoring function was one of our favorite features. With the press of a button on your wireless remote, the head on your side of the bed elevates up to 7 degrees in order to expand your airway and reduce snoring. The zero-gravity preset is another nice touch. We were also impressed with the versatility of the base’s massage function. With three target zones and three intensity levels, we expect most people to find a comfortable setting regardless of their personal massage preferences.

Saatva offers free White Glove delivery for all orders in the contiguous U.S. This service includes a scheduled delivery date and time, and full assembly in a room of your choice. Returns are not accepted, so all sales are final and you won’t receive a trial period with your purchase, but the Adjustable Base Plus is backed by a 25-year warranty.

  • Pros

    1. Budget-friendly bundle includes base, mattress, and bedding set

    2. All orders include a year-long sleep trial

    3. Extended warranty covers stains and spills

  • Cons

    1. Not available in twin or California king sizes

    2. Impractical for shoppers who already have a mattress and bedding

Sizes

Twin XL, Full, Queen, King, Split King

Sleep Trial

50 nights

Warranty

3 Year, limited

If you’re hoping to revamp your sleep space and save some money in the process, the Nectar Adjustable Bundle is an all-inclusive package at a reasonable price. You’ll receive the Nectar Adjustable Bed Frame, a nectar foam or hybrid mattress of your choice, and a bedding set that includes sheets, pillows, and a mattress protector.

Notable Features

The Nectar Adjustable Bed Frame offers adjustable heat and foot positioning. You’ll receive a wireless remote with your bed that allows you to program presets and automatically adjust the base to zero-gravity. A dual-zone massage with three intensity settings can reduce pain and pressure points in sensitive areas after a long day. Other key features include USB ports on each side of the bed and legs that can be set to three different heights.

Nectar currently offers six mattresses to include in your bundle. The three all-foam models excel at motion isolation and pressure relief, and the Nectar Premier Copper is a standout for cooling. If you need some additional support from your mattress, we recommend opting for one of the Nectar hybrids instead. Keep in mind your bundle’s total cost depends on which mattress you choose. The sheets are composed of breathable rayon derived from bamboo, and the pillows contain solid memory foam.

How It Performed

The Nectar Adjustable Bed Frame is relatively quiet and easy to operate thanks to its intuitive controls. Adjustable height is a major selling point if your bedroom is cramped and short on storage space, as the bed can be lifted up to 12 inches off the floor. Our testing team also enjoyed the zoned massage, though our favorite intensity levels varied by personal preference.

A bundle at this price is hard to come by in today’s online mattress market. As an added bonus, your order includes free shipping and a trial period for the mattress that runs for an entire year. The mattress is backed by a lifetime warranty for added peace of mind.

  • Pros

    1. Wall glide technology keeps you close to your nightstand

    2. Head and foot massage settings

    3. Pairs with Alexa or Google Assistant for voice commands

  • Cons

    1. No trial period

Sizes

Twin XL, Queen, Split King, Split California King

Sleep Trial

No Attribute data for this Product

Warranty

10 Year

The Nolah Ultimate Adjustable Smart Base is made with advanced technological features to make your nightly routine more comfortable and convenient.

Notable Features

Designed to integrate with an app and pair with Amazon Alexa or Google Assistant, this adjustable smart base can be operated with either voice commands or a wireless remote, making position changes and feature activation easy.

Buyers can customize their wireless remote with three programmable positions, or they can use preset positions, like anti-snore, flat, and zero gravity, to enhance their sleep experience. Each user can choose their own individual settings for their side.

The smart base also offers a head and foot massage setting in three different intensities. The massage feature operates on dual-massage motors. Underneath the adjustable bed, soft lighting ensures that you don’t stub your toe when getting up and moving around at night. There are also multiple USB ports within reach of the bed’s head area to simplify device recharging.

Lastly, the smart base’s wall glide technology allows for smooth position changes. While moving in gliding mode, the Nolah Adjustable Smart Base takes up as little room as possible and keeps you close to your nightstand.

How It Performed

With a middle-of-the-road price-point and technological features that many adjustable bases don’t have, such as wall glide technology, Wi-Fi, app integration, and voice activation, the Nolah Ultimate Adjustable Smart Base stands out from its competition.

Nolah provides free shipping to buyers within the contiguous U.S., as well as a 10-year warranty. The base arrives in a box and only takes about 10 to 15 minutes to set up.

  • Pros

    1. Dual-massage zone for couples and co-sleepers

    2. Height can be adjusted between 6.5 and 11.5 inches

    3. USB ports on each side and under-bed lighting to prevent stubbed toes

  • Cons

    1. No twin, king, or California king sizes

    2. Assembly with headboard can be time-consuming

Sizes

Twin XL, Full, Queen, Split King

Sleep Trial

101 nights

Warranty

Lifetime, Limited

Puffy’s Adjustable Base is a great option for people with persistent upper or lower back pain. The bed can be programmed for a wide range of positions, including zero-gravity for those who feel most comfortable with their legs elevated higher than their head.

Notable Features

Co-sleepers can independently adjust the massage function and sleeping position for each side of the bed. A wireless remote allows you to easily customize the bed to find a setting that is most comfortable. The base has two massage motors located at the head and foot of the bed with three speed settings. The underside of the bed has soft lights, so sleepers getting up in the middle of the night can find their way around the room without disturbing their partner.

The base is easy to assemble, and it includes a headboard attachment for those looking to match the bed to the rest of their furniture. Adjustable legs make it easy for owners to choose the amount of underbed clearance that’s best for them, ranging up to 11.5 inches. Each side features USB ports to easily charge your devices.

How It Performed

Our testing team found the adjustable base’s independent controls make it an excellent choice for couples, especially those with different preferences. Thanks to the adjustable legs, the base is also great for those living in smaller apartments. The tallest option offers ample storage space for those who need it.

Puffy offers free shipping to customers in all 50 states and a 101-night sleep trial. The trial has no break-in period, so you can return a bed base anytime within that window. Adjustable Base purchases are backed by a generous lifetime warranty.

  • Pros

    1. Isolated articulation for specific areas of their body

    2. Massage options

    3. Lumbar bar supports the lower back

  • Cons

    1. No sleep trial

Sizes

Twin XL, Full, Queen, King, California King, Split California King

Sleep Trial

None

Warranty

10 Year, Limited

Dynasty’s DM9000s Series is the company’s most popular adjustable base, and it’s easy to see why. The bed comes loaded with features to help you nail down the right position from head to toe, experience less pain, and sleep comfortably throughout the night. A dense pad located beneath the lumbar region is especially beneficial for people who live with frequent or chronic lower back pain.

Notable Features

One of the DM9000s Series’ most impressive features is the wall-hugging function, which aligns the bed’s rails with your nightstand. This keeps your eyeglasses, phone, water, and other nighttime necessities within easy reach regardless of how the bed is positioned. We also appreciated how the head, chest, and legs can be independently angled to help you achieve the optimal elevation level for these areas.

A massage function lets you and your partner enjoy gentle vibrations for 10, 20, or 30 minutes at a time. Another notable addition is a series of small hooks intended to hold the mattress in place and prevent shifting or sliding during the night. Other features include under-bed lighting to reduce the risk of injury when the lights are out, legs that can be adjusted between 6 and 10 inches in 1-inch increments, and USB ports on each side of the bed for charging your devices overnight.

How It Performed

A wide range of motion for the head, chest, and leg positions made the DM9000s popular among our testing team. We also liked how the bed’s wireless remote was intuitive and easy to use. You can perform angle adjustments, customize your massage, and save your two favorite positions as memory presets. Split kings and bases in other larger sizes come with two remotes, so you and your partner can operate the bed independently.

You can purchase the bed on its own, or bundle your order with one of Dynasty’s all-foam mattresses. In addition to standard ground shipping, you can pay extra for White Glove delivery that includes full assembly in a room of your choice. The DM9000s is considered a final-sale item, so returns are not allowed past the delivery date, but your purchase comes with a generous manufacturer’s warranty with 10 years of full coverage.

  • Pros

    1. Massage function can be set to three different intensity levels

    2. Each side of the bed features two USB ports

    3. High clearance provides ample space underneath the bed

  • Cons

    1. Not sold in twin, king, or California king sizes

    2. Limited warranty coverage

Sizes

Twin XL, Full, Queen, Split King

Sleep Trial

50 nights

Warranty

3 Year, Limited

The DreamCloud Adjustable Bed Frame’s head and foot are fully adjustable to offer additional support, and it comes with a pre-programmed zero-gravity option to reduce pressure buildup on the lower back. Assembly was easy and took only 10 minutes, as we only needed to screw on the legs.

Notable Features

The base features a massage function to help relieve discomfort as you fall asleep. With the split king model, you can independently adjust the position and massage function on each side of the bed. You can adjust both settings either using the included remote or a smartphone app. Built-in ports on the sides of the frame allow you to charge your devices throughout the night easily. The split king model, and all other sizes, have 15 inches of under-bed clearance.

How It Performed

Thanks to the dual controls, we recommend this base for couples with different position and massage preferences. The generous clearance under the bed is also excellent for people living in smaller apartments looking for extra storage space. The variety of available positions caters to a wide variety of sleepers, specifically those with persistent back or joint pain.

DreamCloud offers free shipping to customers in the contiguous U.S. Purchases come with 50-night sleep trials where you can return an Adjustable Bed Frame for a full refund.

  • Pros

    1. Plenty of under-bed storage

    2. Has two USB charging ports

    3. Includes a massage feature and LED lighting

  • Cons

    1. Higher price point

Sizes

Twin XL, Queen, California King, Split King

Sleep Trial

30 nights

Warranty

25 Year, Limited

The Leesa Adjustable Base has a highly versatile design that works with an existing bed frame. Its telescoping legs move easily to integrate seamlessly with a range of different frame styles. You can also opt to add brackets to your order if you’d like to attach the base to a headboard.

Notable Features

The Leesa Adjustable Base has a frame made from sturdy birch wood and black powder-coated steel. Polypropylene upholstery wraps the wood and metal frame, while a patented MicroHook system prevents your mattress from sliding off the base.

Those who purchase the split king size can adjust each side independently, or opt to sync the sides together so they move as one unit. This feature is particularly helpful if you already have a king size bed frame, since you won’t have to purchase a new one to use the base.

USB ports below each side of the bed allow for easy overnight charging, while the massage feature helps you relax. LED lighting beneath the bed helps you navigate your bedroom in the dark, and the remote has a built-in flashlight.

How It Performed

Thanks to its strong and long-lasting materials, our testers were impressed with how sturdy and stable the Leesa Adjustable Base felt. The wide range of motion allowed us to adjust the head and foot to a variety of positions, including zero gravity. We also recommend the base if you need under-bed storage space, as the legs adjust up to 15 inches tall.

Leesa ships the Adjustable Base for free to customers in all 50 states. Your purchase includes a 30-night sleep trial and a 25-year limited warranty.

  • Pros

    1. Zoned massage options for the head and feet

    2. Monitors sleep patterns using built-in motion sensors

    3. Automatically elevates when snoring is detected

  • Cons

    1. Twin and full sizes not available

    2. Base isn’t backed by a trial/return period

Sizes

Twin XL, Queen, King, Split King, California King, Split California King

Sleep Trial

None

Warranty

25 Year, Limited

The TEMPUR-Ergo Extend Smart Base exemplifies the luxurious craftsmanship that many associate with Tempur-Pedic. Not only is the adjustable bed fully functional and equipped with features intended to help you sleep comfortably, but the base is also embedded with sensors to track your sleep cycle and nocturnal movements. You can access personal data using the Sleeptracker-AI companion app, which also offers sleep coaching programs to help you improve your sleep routine over time.

Notable Features

The TEMPUR-Ergo Extend is Tempur-Pedic’s most advanced adjustable bed in terms of features and functionality. You can elevate or lower your head and legs in order to sleep comfortably, and save your favorite position as a preset on the wireless remote. Additional presets automatically adjust the bed to the zero-gravity position, flatten the bed, and elevate the head for reading or watching television. If the built-in sensors detect snoring, the head will lift roughly 12 degrees to help expand your airway without waking you up.

The four-zone massage lets you target the head, legs, or both areas with three intensity levels. Additional features include USB ports on both sides for charging your devices at night and under-bed lighting to help you navigate your bedroom when the lights are out. You’ll need to download the Sleeptracker-AI app in order to access personal data, which includes total time asleep and awake, time spent in specific sleep cycle stages, and position changes. If you use a Hey Google or Amazon Echo in your residence, you can sync the TEMPUR-Ergo Extend to these devices and program it for voice-activated control. Lastly, the legs can be adjusted to four different heights or completely removed if you want the base to rest on your floor.

How It Performed

Our team was impressed with the TEMPUR-Ergo Extend’s slew of helpful features and high-tech functionality. The range of motion for adjusting positions was a highlight during our tests, as were the zoned massage and anti-snoring head tilt. We also experimented with the sleep-tracking technology. While you’ll probably glean more data from a dedicated wearable tracker, the app was easy to operate and the results appeared fairly accurate. The sleep coaching is another nice touch.

If you opt for the split king size, you’ll receive two wireless remotes with your purchase. The TEMPUR-Ergo Extend Smart Base’s steep sticker price reflects its high-end design. Tempur-Pedic softens the blow with free White Glove delivery throughout the contiguous U.S. This service includes full assembly of the bed in a room of your choice and removal of your old mattress and box spring upon request. The base is further backed by a 25-year warranty with 3 years of full coverage for electrical and power supply components.

Why You Should Trust Us

Our expertise spans a variety of sleep topics and products, including adjustable beds. To create this list, our diverse team of sleep experts evaluated a wide variety of adjustable beds.

When testing adjustable beds, we consider many factors, including durability, availability and usefulness of features, ease of use, and pricing. To provide well-rounded and complete reviews, we ensure our testers have different body types and sleep preferences.

How to Choose a Split King Adjustable Bed

When choosing a split king adjustable bed, there are a few important factors to consider. Do you have two compatible twin XL mattresses to use with a split king base? If not, you’ll need to purchase them.

You’ll also need to consider the adjustable bed’s weight limit, assembly, your budget, and the warranty. The trial period may also be a factor in your decision.

What to Look for in an Adjustable Bed

While mattress shopping, be wary of advertisements referring to an adjustable bed as “perfect for any sleeper” or “the best on the market.” Instead, look for more concrete information about your potential purchase, including mattress compatibility, weight limit, assembly, price, and warranties.

Mattress Compatibility

Split king adjustable beds consist of two twin XL mattresses. Most twin XL mattresses are designed to work with adjustable beds. However, some bed types bend more readily than others, which is crucial to adjustability. We recommend using latex, memory foam, or hybrid mattresses because they’re typically the most flexible. If you plan to use mattresses you already own, make sure your adjustable bed can accommodate them.

Weight Limit

Refer to the weight limit before purchasing an adjustable bed to ensure that it’s strong enough for your needs. Remember to factor in both mattress weight and body weight. While most well-built adjustable beds can easily handle several hundred pounds, lower-end frames may be constructed with lightweight materials that aren’t as sturdy.

Assembly

Some adjustable bed models are more difficult to assemble than others. Mattress companies often recommend that at least two people assemble a base, due to its weight. Those who don’t want to assemble the bed themselves should consider buying from a company that includes White Glove delivery, which means they’ll set it up for you.

Price

The price for an adjustable bed typically falls somewhere between $1,000 and $3,000. However, some luxury models may have a higher price tag. Generally, the price is related to the materials used and the features included. Many retailers offer third-party financing for eligible shoppers concerned about paying the full price upfront.

Warranty

While many adjustable beds don’t include sleep trials, most of them do come with a warranty. Warranties for adjustable beds vary widely in length and coverage, especially for beds that have separate warranties for electrical components. Be sure to read the warranty details to familiarize yourself with the claim process before purchasing an adjustable base.

Problems with Split King Adjustable Beds

A split king adjustable bed can be beneficial to sleepers and couples in a number of ways, but there are a few disadvantages to keep in mind about these beds. Potential drawbacks for owners include:

  • Expensive pricing: Split king mattresses tend to be more expensive than standard king size models, and the same holds true for adjustable beds. You may spend hundreds, if not thousands, of dollars more for a split king bed compared to a standard king.
  • Limited availability: Many leading mattress manufacturers sell their models in split king designs, but this option is still somewhat rare compared to the six standard mattress sizes. Your ideal mattress may not be available in a split king, forcing you to settle for a less suitable model.
  • Excessively large dimensions: Some bedrooms simply aren’t big enough to accommodate a split king adjustable bed. Make sure to measure the length and width of your bedroom’s floor space to ensure this size will fit.
  • Additional bedding needed: You’ll need to invest in two sheet sets, one for each mattress. Twin XL size sheet sets are fairly common, but not as widely available as king size sets.
  • Uneven sleep surface: Split kings have seams or trenches separating the two individual mattresses. This can make the mattress feel slightly uneven. Mattresses that are not properly anchored to their bed frame can move further apart when you or your partner move at night.

Split King vs. King Adjustable Beds

A king adjustable bed uses one king size mattress, while a split king adjustable bed uses two twin XL mattresses. This means that when you change a king size adjustable bed’s position, the entire bed moves.

The split king adjustable bed, however, uses two different mattresses and operates independently on each side, so sleep partners can customize the position, firmness level, and feel of their side of the mattress without affecting the other sleeper.

Bed TypeSplit King Adjustable BedKing Adjustable Bed
BenefitsEach person gets to choose their own mattress and customize their sleep experience. Couples can operate each side of the bed separately, changing positions and settings one side at a time.With a king adjustable bed, couples can change the position of a single, king size mattress to match both of their sleep preferences. Additionally, there’s no seam between the couple because it’s one bed.
Pros
  • Personalized mattress choices and adjustments make for a good night’s sleep for each person, regardless of different preferences
  • A user can enjoy a massage, reduce snoring, or read in a sitting position without bothering their partner
  • With separate mattresses, motion doesn’t transfer when one partner sleeps restlessly or gets into or out of bed
  • Only one king size sheet set is needed
  • With one king size mattress, there’s plenty of room and no seam between the couple
  • Some couples may prefer one mattress rather than two when it comes to sex
Cons
  • Each mattress needs its own sheet set, and sheets for twin XLs are more difficult to find than standard king size sheets
  • The seam where the mattresses meet may irritate some couples
  • If the two mattresses aren’t properly secured, they can move apart, creating a gap
  • A single king mattress is more difficult to move than two twin XL mattresses
  • Sleep partners must change the adjustable bed’s position and use features, like massage settings, together
  • Motion may transfer across a king size bed’s surface, which can disrupt sleep

Optimize Your Experience

Because a split king bed is made up of two mattresses, people using it can enjoy an ergonomically designed bed made for their body type and preferred sleep position without worrying about potentially depriving a partner with different needs of a good night’s sleep.

Many split adjustable beds also come with unique features like anti-snore and zero gravity positions or USB ports for charging phones and tablets.

Tailor Each Mattress to Fit Individual Needs

Oftentimes, partners need different things from their beds, and couples can fine–tune a split adjustable bed just for them. For example, one person could be a side sleeper who needs more cushioning around the shoulders and hips, while their partner may be a stomach sleeper who requires a firmer feel to avoid sinking into the mattress at the midsection. In that case, the side sleeper could use a soft mattress topper or even a softer mattress on their side of the split king.

Luxury Features

Those seeking a split king adjustable bed have a variety of features to choose from, including programmable remote controls, silent motors, under-bed lights, and zero gravity settings. Some beds can even sync with a smartphone to provide biometric data and other information to sleepers, coaching them on how to get a good night’s sleep.

Frequently Asked Questions

Can you use your existing king bed frame?

You can find split adjustable beds to fit inside most existing bed frames. However, it really depends on the adjustable bed you choose. Some split adjustable beds are sold as standalone frames, and others work with existing bed frames, though some assembly may be required. For example, some models include brackets for mounting a headboard or a removable platform for placing the bed directly on top of the slats of the frame.

Do you need to buy new sheets?

Unless you already have two twin XL sheet sets, you'll need to buy some. Because the two beds move separately, regular king size sheets won't suffice.Usually, sheets for your split adjustable king will include elastic or straps that keep the sheet from sliding. While each mattress needs its own fitted sheet, sleepers can use a single top sheet if they choose to.

How do you keep a split king adjustable bed together?

Because the split king consists of two twin XL mattresses, it's possible for them to slide away from each other during the night when not properly secured. A non-slip pad can help with this by attaching to the base of the mattress to prevent sliding. Mattress suspenders can also be used to hold your twin XL mattresses together. These attach to the bottom of the mattresses, and the pressure pulls them together.

Are couples still able to cuddle?

Yes, couples can cuddle on an adjustable bed. While a split adjustable bed does have a seam, it shouldn't cause a significant gap between partners. The differences between the two sides of the bed, including their firmness and feel, aren't likely to cause any significant difficulties, either.And even though the split king has two mattresses, you can still use a single comforter and top sheet.

Still have questions?

Our product experts have extensive experience testing just about every sleep product on the market.

Send an email to [email protected] with your questions and we’ll help you find exactly what you’re looking for.

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