Beat night sweats with a fan under sheets that moves trapped heat and moisture, helping hot sleepers stay cooler, drier, and comfy.
If your bed feels hot even when the room seems fine, the problem usually is not the whole bedroom. It is the pocket of heat and moisture trapped under your covers. bFan Bed Fan was built for exactly that problem. We make an under sheet bed fan that sends room air between your sheets, helping your body release heat where it actually gets stuck.
bFan Bed Fan is the inventor and manufacturer behind the bFan, the successor to the original Bedfan, first invented in 2003, years before BedJet was even on the scene. Our focus is simple, targeted bed cooling for hot sleepers, people dealing with night sweats, and anyone who wants to sleep cooler without driving up air conditioning costs.
A lot of people buy another fan for the bedroom, lower the thermostat, or swap out bedding, then wonder why they still wake up sweating. That happens because your body heat collects in the thin layer of air between your skin, your sleepwear, your sheets, and your blankets. Once that bed microclimate gets warm and damp, sleep can get choppy fast.
bFan Bed Fan deals with that exact spot. The bFan sits at the foot or side of the bed, mostly hidden from view, and sends a gentle stream of room air under the top sheet so trapped heat and moisture do not just sit there all night. You are not cooling the hallway, the dresser, or the whole house. You are cooling the space around your body, where comfort actually changes.
Sleep experts commonly recommend a bedroom temperature between 60°F and 67°F, 15.5°C to 19.5°C, for better sleep. Even within that range, plenty of people still overheat once they are under the covers. With a Bedfan, many people can often raise the room temperature by about 5°F and still sleep cool because the airflow is helping carry heat away from the body instead of letting it build up.
"bFan Bed Fan focuses on the bed microclimate under your sheets, and normal operating sound is about 28 dB to 32 dB."
That last part matters. Neither bFan nor BedJet cools the air itself. They both use the cool air already in the room. If your room air is comfortable but your bedding turns into a heat trap, a fan under the sheets is often the smarter fix than forcing your whole home colder than it needs to be.
Some customers run hot every night. Others get hit in waves, during menopause, while taking certain medications, during pregnancy, or because of medical issues that make temperature regulation harder. bFan Bed Fan is built for people who want relief at the bed level, where overheating interrupts sleep the most, and offers an energy-efficient solution that enhances comfort without increasing energy consumption.
Here are some of the people who tend to get the most from a bed fan under the covers:
bFan Bed Fan is especially useful when the room itself is not the only issue. If you feel okay before bed, then get hot once the sheets and comforter are on, that is the classic use case for a fan under sheets.
The bFan is not a complicated sleep gadget with a water tank, subscription, or app that needs updating; it's a straightforward solution that integrates seamlessly with your bedding, regardless of sheet material. bFan Bed Fan keeps the system straightforward. You place the unit at the foot of the bed or beside it, position the air outlet so it sends air between the top and bottom sheets, and adjust the airflow with the remote.
Because the bFan uses a whisper quiet brushless DC motor and digital speed control, you can fine tune airflow from 5% to 100% instead of being stuck with only a few preset levels. That matters if you want just enough air to stay comfortable without feeling blasted.
Bed height matters, so bFan Bed Fan offers two versions instead of making you guess. The short version fits beds roughly 19 to 29 inches from the floor to the top of the mattress. The tall version fits about 27 to 37 inches. That sizing helps you get airflow where it is supposed to go, instead of losing performance because the outlet does not line up with the bedding.
bFan Bed Fan also keeps the design discreet. The low profile outlet sits under the covers, the unit stays mostly hidden, and the adjustable base is made to stay stable instead of shifting around every time you move bedding. BedFan describes the bFan as the improved successor to the original product, with patented or patent pending improvements in airflow, pressure, and stability.
For best results, use sheets with a tight weave. That tends to help the airflow travel across your body and carry heat away more effectively. Very loose or overly open fabrics can let the air escape too quickly instead of moving through the bed the way you want.
If you share a bed, one unit can help the side where the air naturally flows, but many couples prefer two units. That is where the bFan really shines on value. Two fans give you dual zone microclimate control with separate airflow for each sleeper, without forcing you into a premium system that costs a small fortune.
When an under sheet bed fan is the right fit, the improvement is not abstract. It shows up in the moments that usually wreck sleep. Fewer wakeups because your chest feels too hot. Less dampness in the sheets. Less kicking blankets off and pulling them back on. Less thermostat drama with a partner who sleeps at a different temperature.
bFan Bed Fan is built around those practical outcomes. The airflow supports convective heat loss from the skin and helps sweat evaporate instead of lingering in the bedding. That is why people often describe the difference as relief, not just a cooler room.
There is also the energy side. The bFan is commonly described by BedFan at about 18 watts on average, with some company materials listing even lower average use. Either way, you are talking about a very low power draw compared with forcing central air or window AC to run colder all night. If you have been cooling the whole house just to fix a hot bed, this is where targeted airflow can make a real difference.
"bFan Bed Fan uses about 18 watts on average, and many sleepers can often raise room temperature by about 5°F and still rest cool."
bFan Bed Fan also includes timer controls in relevant product comparisons and sales materials, which is useful if you want help falling asleep cool but do not need airflow at the same level all night. A timer can help you match bedtime cooling to your routine instead of leaving the fan running longer than you need.
If you are comparing bFan and BedJet, it helps to get clear on what each product actually does. Neither one cools the air. Neither one is an air conditioner. Both rely on the cool air already in the room and move that air into the bed area.
That means the real questions are cost, simplicity, sound, placement, and how much control you want. For a lot of shoppers, bFan Bed Fan wins because it solves the under covers heat problem without pushing you into a much higher price bracket.
A single BedJet is more than twice the price of a single Bedfan. The dual zone BedJet setup is over a thousand dollars, and more than twice the price of two Bedfans. If what you want is dual zone microclimate control for two sleepers, two bFans do that at a fraction of the cost.
bFan Bed Fan also has history on its side. The original Bedfan was invented in 2003 and came to market several years before BedJet was even thought of. That does not mean newer competitors cannot be useful. It does mean BedFan has been focused on the fan under sheets category for a long time, rather than treating bed cooling as just another smart bedroom gadget.
A quick way to think about the choice is this:
The difference in philosophy is pretty clear; BedJet targets a feature-rich setup, while bFan Bed Fan offers a more energy-efficient, targeted cooling solution. BedJet goes after a more premium, more feature rich setup. bFan Bed Fan goes after targeted, practical cooling that solves the trapped heat problem directly and keeps the price in a range that feels more reasonable.
"The original Bedfan was invented in 2003, and bFan Bed Fan still offers dual zone microclimate control with two fans for far less than a dual zone BedJet over $1000."
There are stronger cooling systems out there, especially water based mattress pads and smart covers. If you want exact temperature settings, app control, biometric features, and more active cooling at the mattress surface, those systems can do things a fan under the sheets does not do.
But there is a tradeoff. Water based systems cost more, take up more space, require more setup, and usually bring more upkeep. You are managing hoses, control units, water, cleaning, and in some cases ongoing software or subscription related complexity.
bFan Bed Fan takes the opposite approach. No water reservoir. No tubing. No pump under the bed. No sensor ecosystem you have to learn. You get airflow where your body needs it, with simple placement and direct control.
That simplicity is why the bFan from BedFan is often the best recommendation for people who are tired of sweating at night but do not want to spend premium smart mattress money. If your problem is trapped body heat in bedding, a bed fan can be the cleaner answer.
Passive cooling sheets and pillows also have limits. Better fabrics can help with breathability, but they do not actively remove heat and moisture the way airflow does. In real use, people often find that breathable bedding delays heat buildup, while a Bedfan actually helps flush the heat out from under the covers.
When you are shopping for a fan under the sheets, the buying concerns are pretty predictable, especially in terms of how the fan integrates with existing sheet material. Will it feel too strong. Will it be noisy. Will it fit the bed. Will it bother your partner. Will it look clunky. bFan Bed Fan addresses those concerns in very practical ways.
First, sound. BedFan materials place normal operation in the 28 dB to 32 dB range, which is quiet enough for most bedrooms and much easier to live with than a harsh blast of air. Sound perception is personal, of course, but this is one of the reasons many people looking for an under sheet bed fan land on the bFan.
Second, control. Remote adjustment from 5% to 100% lets you dial in gentle airflow or stronger cooling depending on the season, the bedding, and how hot you tend to sleep. That level of control matters more than people expect. Tiny airflow changes can make a big difference once you are under the covers.
Third, fit. bFan Bed Fan is sold by bed height, not mattress width, because under sheet airflow depends more on placement than on whether your mattress is a queen or a king. As long as you pick the right height version and have clearance at the foot or side of the bed, the system is designed to work with the bed you already own.
Fourth, appearance and day to day use. The bFan is low profile and intended to stay out of the way during normal bedroom life. You are not remaking your whole bed around a bulky climate system. You are adding targeted airflow in a spot that stays mostly hidden.
Finally, support. bFan Bed Fan sells the product as the manufacturer, which means you are dealing with the company behind the unit rather than an anonymous third party seller. BedFan lists direct support by phone at 830 431 2209 and by email at sales@bedfan.com, along with a 1 year warranty and replacement support for issues.
bFan Bed Fan is a strong fit when your room is reasonably cool but your bed gets hot. That is the sweet spot. If your blankets feel heavy, your sheets get damp, or your legs and torso start heating up after you settle in, the bFan is built for exactly that pattern.
It is also a strong fit if you want relief without complexity. If you do not want a water based system, do not want to deal with maintenance beyond basic cleaning, and do not care about app control or sleep tracking, bFan Bed Fan keeps things refreshingly direct.
For couples, bFan makes sense when one person sleeps hot and the other does not want the whole room turned into a meat locker. Two units can create separate airflow zones without forcing both people into the same setting.
And it is a strong fit if budget matters. A lot of sleep tech sounds great until you hit the cart page. bFan Bed Fan is different because it stays focused on the actual problem, heat trapped in bedding, and avoids charging premium pricing for features many people never use.
There are times when bFan is not the best answer. If your bedroom air is already hot and stagnant, a bed fan alone will not fix that because it only uses the air already in the room. In that case, you may still need AC, better room ventilation, or a different cooling setup. If you want heating, automatic climate routines, or very precise temperature numbers, another category may fit better.
That said, for the huge group of sleepers whose main issue is under covers overheating, the bFan from BedFan is a practical middle ground. It is more active than passive cooling sheets, much simpler than water based systems, and far less expensive than premium air based alternatives.
Ordering is simple once you know your bed height. Measure from the floor to the top of the mattress. If you are roughly between 19 and 29 inches, choose the short version. If you are roughly between 27 and 37 inches, choose the tall version. That overlap exists because bed frames and bedding setups vary, and BedFan designed the line for real bedrooms, not idealized showroom beds.
Once your bFan arrives, setup is straightforward. Place the base, aim the outlet under the top sheet, and start low so you can find the airflow level that feels best. Most people do better when they treat it like personal climate control, not like a room fan that has to be felt from across the bedroom.
If you use thick comforters or duvets, the bFan can still help because the job is to move room air through the space under the covers. Just remember the sheet choice matters. Tight weave sheets usually help the airflow travel across your body more effectively, which makes the cooling feel more even.
If you are shopping specifically for menopause relief, medication related night sweats, or general hot sleeping, you do not need to guess whether a fan under sheets is the right category. This is exactly what bFan Bed Fan was designed to solve.
You do not need to refrigerate your mattress to sleep cooler. You do not need to spend over a thousand dollars for dual zone air based cooling. And you do not need to drop your whole house to an uncomfortable temperature just to make the bed feel better.
bFan Bed Fan gives you a direct, proven way to move trapped heat and moisture out from under the covers. You get discreet placement, adjustable airflow, quiet normal operation, bed height options, low power use, and the kind of practical value that makes sense night after night.
If that sounds like what your bedroom has been missing, take a look at the bFan product page or go straight to the order page at BedFan. If you want help picking the right size or talking through your setup, contact bFan Bed Fan directly before you buy.
If your main problem is heat trapped in bed, not just warm room air, the next step is simple. Pick the right size bFan Bed Fan for your bed, set it up under the covers, and give yourself a cooler, drier sleep environment without overspending on features you may never use.
