The Best Bedroom Temperature for Couples: America’s Sleep Climate Divide

Bedroom temperature is one of the few sleep variables you can easily change. But it’s also the one most likely to be contested, because the person next to you may want the opposite of what you want. We surveyed 1,011 U.S. adults about how heat affects their sleep, what they blame for it, and how they and their partners settle the difference.

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How Often Do People Wake Up Too Hot?

Overheating is not an occasional summer problem. More than half of adults (52%) told us they wake up too hot at least once a week, and each episode costs them about 38 minutes of sleep.

That adds up to roughly 33 hours of lost sleep over the course of a year. While insomnia can have many causes, recurring temperature-related wake-ups are one factor that may chip away at your total sleep time over time.

Which Mattress Types Sleep Hottest?

What you sleep on changes the odds. We asked every respondent what their current mattress is made of, then compared how often each group wakes up overheated.

How often sleepers on each mattress type wake up too hot at least weekly

The spread between the hottest and coolest categories was 7 points, narrower than the reputation gap between them suggests. Traditional memory foam mattresses are built from dense, closed-cell polyurethane foam that holds body heat against the sleeper, and that construction is what earned foam its reputation. Even so, roughly half of innerspring and pillow-top sleepers overheated too, so airflow through the coils doesn’t solve the problem on its own.

Construction is what changes the outcome rather than the category label. Our own Bio-Pur® foam uses an open-cell structure that lets air move through instead of trapping it, and our cooling mattresses pair that foam with zoned support that keeps airflow open underneath pressure points.

Which Sleep Positions Run Hottest?

Sleep position mattered about as much as mattress type. The more of your body that stays pressed into the mattress, the less surface area you’ve got left to shed heat, and the numbers follow that logic:

• Stomach sleepers, 56%. The position with the most continuous contact between body and mattress, and the highest overheating rate we measured.
• People who shift all night, 55%. Nearly as high, which suggests the shifting is often a response to heat rather than a cause of it.
• Side sleepers, 51%. Contact concentrates at the shoulder and hip, leaving more of the body exposed to the air.
• Back sleepers, 49%. The lowest rate, and the position that spreads contact most evenly.

If you are a stomach sleeper or a side sleeper, the position isn’t really the variable you can change. What you can change is what you’re lying on.

Why Does Bedroom Temperature Affect Sleep?

Falling asleep is a cooling event. Your core body temperature drops on a circadian rhythm in the evening, and research published in Frontiers in Neuroscience found that people are most likely to fall asleep when their core and brain temperatures are dropping fastest. A bedroom that’s too warm works against that drop, because thermoregulation depends on shedding body heat into the air around you, and a warm room gives your body nowhere to send it.

The cost to sleep quality is measurable. A systematic review of 11 studies in the Annals of Occupational and Environmental Medicine found that every 1°C rise in night-time temperature cut sleep by roughly 5 to 10 minutes, and that nights above 77°F raised the chance of sleeping less than seven hours by about 3.5 percentage points. Restlessness was among the most commonly reported complaints across the studies reviewed.

Cooling works in the other direction, and the effect reaches the cardiovascular system. A study of 72 people published in Scientific Reports found that sleeping on a mattress that draws heat away from the body increased deep slow-wave sleep and lowered heart rate by more than two beats per minute. REM sleep, or rapid eye movement sleep, didn’t change overall in that study, so the benefit showed up in the deep stages rather than evenly across the night’s sleep cycles.

What Is the Best Bedroom Temperature for Sleep?

Roughly 66°F to 70°F is the temperature range that Frontiers in Neuroscience research identifies as the ambient conditions that support efficient sleep onset for most people, working together with whatever bedding is on top of you. No single ideal temperature for sleeping suits everyone, but that band is the general answer to the best temperature for sleep.

The answer our respondents gave is where the bedroom stops working. On average, adults said the bedroom becomes too warm to sleep restfully at about 75°F. The threshold moved depending on who else was in the bed:

• Partnered sleepers: 74.4°F. Two bodies generating heat under shared bedding raise the effective temperature of the bed above whatever the thermostat reads.
• Solo sleepers: 75.8°F. Nearly a degree and a half more tolerance, with the same air temperature to work with.

Put those two numbers together, and the gap is the practical finding. The temperature people say ruins their sleep runs five to nine degrees above the range research points to, which means a bedroom can feel acceptable and still be too warm to sleep well in.

How Often Do Couples Disagree About Bedroom Temperature?

Just under two-thirds of partnered sleepers disagree with their partner about the bedroom temperature at least sometimes. One room can only hold one setting, and it has to absorb two personal preferences. How often that comes up varies widely:

• Never, 37%. The largest single group, and the one whose thermostat settings already match.
• Monthly, 36%. Occasional enough to feel seasonal rather than chronic.
• Weekly, 22%. Frequent enough that one person is regularly sleeping at a temperature they did not choose.
• Every night, 6%. A standing mismatch no thermostat setting can resolve, because there’s no number that satisfies both people.

How Do Partners Handle the Difference?

Most of the solutions people reach for adjust the bed rather than the room, and the ones that separate the two sleepers are the most common.

What partnered sleepers have done about a temperature difference

Separate blankets for couples led by a wide margin, and slightly more women than men had tried it, 70% against 65%. It’s the cheapest fix available and the only one on this list that lets both people keep their own preference without either of them leaving the room.

The bottom two rows are what happens when the smaller adjustments stop working. A quarter of partnered sleepers have relocated for a night, and 11% have made the arrangement permanent. For context, that 11% is exactly the same share of partnered sleepers who have replaced a mattress because it slept too hot. The same number of people have given up the shared bed as have replaced the bed.

That pattern tracks with mattress buying more broadly. Our companion survey of 1,006 mattress shoppers found that 58% report at least one mattress purchase regret, and choosing the wrong firmness or comfort level was the second most common complaint at 18% — a category heat retention often falls into when shoppers can’t test a mattress overnight before buying.

Thermostat or Fan? It Depends on Who Is in the Bed

Overall, 40% of adults rely on the thermostat or air conditioning to manage temperature at night, and 34% rely on a fan. That split reverses depending on whether someone shares a bed.

Primary method for managing bedroom temperature at night

A thermostat sets one temperature for the whole room and, by extension, for both people. A fan is directional and can be aimed at one side of the bed. Partnered sleepers leaned toward the setting that applies to everyone, while solo sleepers leaned toward the one they can point at themselves.

Which Single Change Would Actually Fix It?

We asked partnered sleepers to pick the one change that would create the best temperature compromise between them and their partner.

The single change partnered sleepers say would work best

A cooler room won, which is the answer that costs the least to try and the most to run. The second choice is the more interesting one: 22% picked a cooling mattress, ahead of separate blankets, even though 68% of them have actually tried separate blankets. When people are asked what would work rather than what they have already done, the answer moves from the bedding to the bed.

Is the Electricity Bill Keeping Bedrooms Too Warm?

For a large share of people, the electricity bill decides the bedroom temperature more than the thermostat does. Roughly 2 in 5 adults (42%) said electricity costs keep them from making the bedroom as cool as they would like, and that rose to 53% among people who wake up too hot at least once a week.

Among partnered sleepers, 70% said they would rather buy cooling gear once than pay more every month to run the air conditioning colder. Running the room colder is the fix people name first and the one they can least afford to use every night, which is why a one-time purchase that cools the bed instead of the room keeps surfacing in the answers.

How Many People Have Replaced a Mattress Over Heat?

Nearly half of adults have already replaced or are considering replacing a mattress because it was too hot to sleep on. Who’s in that group depends on what they are sleeping on now.

Considering a replacement and making one are different steps. Only 11% of partnered sleepers and 6% of solo sleepers have actually replaced a mattress because of heat, so the 47% is mostly people who have thought about it but not acted. Sharing a bed nearly doubles the odds of following through, which tracks with everything above. Two people generating heat under one set of bedding reach the breaking point sooner than one person does.

Share who have replaced or considered replacing a mattress over heat, by current mattress type

How Much Would People Pay to Stop Waking Up Hot?

Three-quarters of adults (76%) would pay extra for a mattress that guaranteed they would never wake up too hot. What they would pay drops off steeply after the first $100.

How much more adults would pay for a mattress that guaranteed they never woke up too hot

The average across everyone was $164. Partnered sleepers were willing to pay more at every step of that ladder, averaging $181 against $156 for solo sleepers. And the gap widened as the numbers got larger: 10% of partnered sleepers would pay $1,000 or more, against 5% of solo sleepers.

Willingness to spend peaked in the middle of the age range rather than at either end. More millennials (24%) and Gen X (23%) would pay at least $500 more than baby boomers (15%) and Gen Z (14%).

Which Cooling Features Matter Most?

When we asked which cooling feature would most influence a next mattress purchase, one answer took more than twice the share of any other.

The cooling feature that would most influence a next mattress purchase

Shoppers gravitate toward the cooling technology they can picture, which is a layer that feels cool when you touch it. Plant-based or open-cell foam came last at 4%, despite being the structural change that determines whether heat moves through the mattress at all, rather than only at the surface. That gap between what sounds cooling and what works is worth knowing before you shop.

Multiple firmness options at 9% is the answer to a different question, and it’s the one that matters for the couples in this survey. A bed that can accommodate different firmness levels on each side is the only entry on this list that addresses two people who want different things. Our AS6 Black Series pairs a CryoCool™ cover and a TitanAir™ airflow layer with split firmness options.

What the Sleep Climate Divide Means for Your Bedroom

Temperature is the aspect of sleep hygiene people most often mismanage, partly because the fix seems obvious and partly because that fix feels expensive. More than half of adults lose sleep to heat every week; the point at which a bedroom becomes unsleepable runs well above the temperature range research points to; and 42% can’t afford to close that gap with the thermostat.

For couples, the problem compounds, because a shared room has one temperature and two preferences. The workarounds people reach for first, separate blankets and changing the thermostat once a partner is asleep, treat the symptom for one person at a time. The solutions they cited as most effective, lowering the temperature or upgrading to a cooling mattress, focus on the sleeping surface or environment rather than just applying temporary workarounds.

If you’re deciding how to improve your sleep environment, lighter bedding, a fan for the warmer sleeper, and separate blankets are great starting points, but the mattress makes the biggest difference. Our cooling mattresses address the root of the problem for nights when the room is already as cool as your budget allows, yet the bed still feels too warm.

FAQs

What is the best bedroom temperature for sleep?

Research published in Frontiers in Neuroscience points to roughly 66° to 70°F as the ambient range that supports efficient sleep onset, working together with your bedding. In our survey, adults said the bedroom becomes too warm to sleep restfully at about 75°F on average, which is five to nine degrees above that range.

What is the best bedroom temperature for couples?

Partnered sleepers in our survey hit their limit at 74.4°F, about a degree and a half cooler than solo sleepers at 75.8°F. Two bodies under shared bedding raise the temperature of the bed above whatever the room reads, so couples generally need the room set cooler than either person would choose alone.

Is 70 degrees too hot to sleep?

Not for most people. 70°F sits at the top of the 66° to 70°F range identified by Frontiers in Neuroscience research, so it’s within the band that supports falling asleep, just at the warm edge. Our respondents said the bedroom becomes too warm to sleep restfully at about 75°F on average, five degrees above that. If you share a bed, treat 70°F as an upper limit rather than a target, since two people under shared bedding raise the bed’s temperature above whatever the room reads.

Is 72 degrees too warm for sleeping?

It’s above the range research supports, though below the point most people call unsleepable. 72°F sits two degrees over the 66° to 70°F band tied to efficient sleep onset, and three degrees under the 75°F average our respondents gave as their limit. That gap is where a lot of poor sleep hides: a bedroom at 72°F can feel perfectly acceptable and still be warm enough to cost you sleep, which is one reason temperature so rarely gets identified as the cause.

Is 62 degrees too cold to sleep?

62°F is below the 66° to 70°F range the research points to, so it’s cooler than most people need. Our survey measured only the point where a bedroom becomes too warm, not a lower limit, so we can’t say how many people find 62°F genuinely uncomfortable. What we can say is that the problem people report is overwhelmingly heat rather than cold: 52% wake up too hot at least weekly, and 42% said electricity costs stop them from cooling the room as much as they’d like.

Why do couples disagree about bedroom temperature?

Just under two-thirds of partnered sleepers in our survey disagree at least sometimes, and 6% disagree every night. When a shared room has one temperature and two people with different tolerances, the thermostat setting that suits one person doesn’t work for the other.

Does a cooling mattress actually help you sleep?

A study of 72 people published in Scientific Reports found that sleeping on a mattress built to draw heat away from the body increased deep slow-wave sleep and lowered heart rate by more than two beats per minute, improving the quality of sleep in the deep stages, though REM sleep didn’t change overall. In our own survey, 22% of partnered sleepers picked a cooling mattress as the single change that would best resolve a temperature difference with their partner.

Do memory foam mattresses sleep hot?

More often than the alternatives, but not by as much as their reputation suggests: 56% of people sleeping on memory foam woke up too hot at least weekly in our survey, against 49% of those on a pillow-top or innerspring, a 7-point spread. Roughly half of every group overheated, so the material is one factor rather than the whole explanation.

Which sleep position makes you sleep hottest?

Stomach sleepers, at 56%, wake too hot at least weekly, followed by people who shift all night (55%), side sleepers (51%), and back sleepers (49%). The more of your body that stays in continuous contact with the mattress, the less surface area is left to release heat.

How much extra would people pay for a mattress that sleeps cool?

$164 more on average, and $181 among people who share a bed. Three-quarters (76%) would pay something extra, 65% would pay at least $100, and 8% would pay $1,000 or more. We also recommend some of the best mattresses for couples that provide all-around-comfort and cooling.

Methodology

Amerisleep surveyed 1,011 U.S. adults about how heat affects their sleep, what they blame for it, and how they and their partners manage bedroom temperature at night. The survey was built and fielded on SurveyMonkey, with respondents recruited through CloudResearch Connect, targeting U.S. adults aged 18 and older. No screening criteria were applied beyond age, so findings describe the general adult population rather than mattress shoppers specifically. Questions about partner behavior were shown only to the 60% of respondents who share a bed at least some nights (n=608). Data was collected on August 18 and 19, 2026.

No demographic or regional quotas were applied, and results are unweighted and describe the surveyed sample.

Sample composition

• Bed sharing: 60% share a bed at least some nights (n=608), 40% rarely or never do (n=403)
• Generation: 48% millennials (n=489), 24% Gen X (n=247), 18% Gen Z (n=177), 10% baby boomers or older (n=98)
• Gender: 58% women (n=582), 42% men (n=429)
• Mattress type: 33% memory foam (n=336), 20% innerspring or coil (n=206), 20% hybrid (n=199), 14% pillow-top (n=146), 9% unsure of their mattress material (n=89), and 3% latex, air-filled or other (n=35)

Open-ended numeric questions report averages with outliers removed using the interquartile range method. Demographic breakdowns are reported only for groups representing at least 5% of the base for the question shown.

About Amerisleep

Sleeping hot is one of the most common reasons people stop liking a mattress they once chose carefully. Amerisleep builds mattresses around that problem, using plant-based open-cell foam and zoned support that keep air moving instead of trapping it against you. Our cooling mattresses come in a range of firmness levels, including models that can be built with a different feel on each side for partners who do not agree on much at bedtime.

Fair Use Statement

Journalists and researchers are welcome to quote these findings and reproduce the charts on this page in editorial coverage. We ask only that you credit Amerisleep and link back to this page so readers can see the full results and the methodology behind them.