Help Center

The Flux Sleep features two cooling modes designed to help you find your perfect sleep temperature:

• Eco Mode: Ideal for all-night comfort, this mode lowers your bed temperature by -5°F.
• Max Mode: Povides a deeper chill, dropping the temperature by -10°F.

The Flux Sleep uses active semiconductor refrigeration to chill water and circulate it through a network of micro-tubes inside the mattress pad.

The Flux Sleep is extremely quiet - just 33 decibels when operating.

To give you an idea, 33 dB is roughly the sound of a soft whisper or a quiet library. It is significantly quieter than a standard bedside fan or a window AC unit. In a typical room, you’ll likely forget it’s even running.

Barely any! In Eco mode, the Flux Sleep draws about 10 watts - less than a standard LED light bulb. In Max mode, it uses about 70 watts.

To put that in perspective: a window AC unit pulls 500-1,500 watts, a portable space heater draws 1,000-1,500 watts, and other high-end cooling mattress systems use 100-150 watts. The Flux Sleep on Max is less than half of what those other cooling systems use, and in Eco mode it's practically nothing.

At typical US electricity rates, you're looking at a few cents per night to run it. So you can keep it running all night without worrying about your power bill!

Yes! Our Queen and King systems are designed for total "Dual-Zone" customization. Instead of one unit trying to please two people, we provide two dedicated cooling systems - one for each side of the bed.

Yes, the machine can be placed on the floor - that works totally fine!

Our promotional photos show it on the bedside table to display the details more prominently.

No. When you buy the Flux Sleep, you own it. We don’t believe in charging you a "monthly rent" to sleep in your own bed. There are no hidden fees, no locked features, and no memberships required. Every cooling benefit is available to you from day one, forever.

No app required! We designed the Flux Sleep to be "digital-detox" friendly. You can switch between Eco and Max modes directly on the unit with a simple button press. There’s no need to fumble with your phone, check for firmware updates, or deal with spotty Wi-Fi in the middle of the night.

No, you can keep the mattress you already love. The Flux Sleep is designed to be a universal "add-on" system. It features a thin, comfortable cooling pad that slides right on top of your current mattress. Simply place the pad under your fitted sheet, connect it to the control unit, and you’ve instantly upgraded your existing bed!

The pad goes between your mattress and your fitted sheet, so you are not sleeping directly on it.

There are photos on our website where it's shown on top of the bed - that's just so you can actually see the pad for demonstration purposes. In real use, it's always tucked under the sheets.

Not really! Of course, no cooling mattress pad will be entirely imperceptible, but we've engineered ours to be as subtle as possible.

Your mattress will still feel like your mattress.

Yes, the Flux Sleep works great with adjustable beds!

The silicone tubing is incredibly durable, so even if it gets bent a little during adjustments, it won't break. Just try to be conscious of not pinching the tubes when you're raising or lowering the bed, so water can still flow through them.

The connecting hose is 40 inches long, so just measure the distance from your floor/nightstand to the mattress to make sure it reaches comfortably.

No, there is no weight limit. Our cooling pad is engineered with durable, medical-grade silicone tubing that is designed to withstand the pressure of any body type without kinking or restricting water flow. Whether you sleep alone or share the bed with a partner (and the dog!), the Flux Sleep will continue to circulate water.

While not specifically designed as a travel product, plenty of people do take it on the go without any issues.

The cooling unit is quite compact: just 9.65 x 7.48 x 4.53 inches and roughly 4 lbs. The pad folds up as well.

If you're packing other items like clothes, we would definitely recommend using a checked bag to fit everything. The Flux Sleep could definitely fit in a carry-on, but there wouldn't be a lot of room left for other items.

Yes! We accept HSA and FSA payments through our partnership with TrueMed.

By selecting the TrueMed option at checkout, you can use your health savings funds for eligible purchases. This process ensures your items meet the necessary medical necessity requirements, making it easier than ever to invest in your health using pre-tax dollars.

How it works:

• Select TrueMed: Choose the TrueMed payment option at checkout.
• Quick Qualification: You’ll complete a brief, integrated health survey to determine eligibility.
• Checkout: Once approved, you can use your HSA/FSA card just like a regular credit card.

Note: If you don't have your HSA/FSA card handy, TrueMed also provides instructions on how to submit your receipt for reimbursement after purchasing with a standard payment method.

See more details on paying with your HSA/FSA here.

We don't have a military discount program, but we absolutely appreciate and thank you for your service!

To be honest, we really can't afford to lower our prices any further without losing money as a company.

All orders are dispatched from our U.S. fulfillment center in Oklahoma within 1 business day. Once it’s on its way, you can expect these estimated delivery times via UPS:

• USA: 2–3 business days
• Canada: 3–4 business days
• UK, Australia & Europe: 5–7 business days

You will receive a tracking number via email as soon as your Flux Sleep order ships, typically within 1–2 business days of purchase.

You can then track your order through our simple order tracking page.

Flux Sleep is a USA-based company headquartered in Wyoming.

All units are shipped from our warehouse in Tulsa, Oklahoma.

Very little! Just wipe down the control unit with a damp cloth occasionally and refresh the water in the tank every now and then. The mattress pad can be spot cleaned as needed. That's it - no complicated upkeep required.

If you ever notice any odor from the water system, just add a small amount of hydrogen peroxide to clean it out.

Not very often. Because the Flux Sleep operates as a semi-closed loop, evaporation is kept to an absolute minimum. In a standard bedroom environment, you will typically only need to "top off" the reservoir once every 4 to 8 weeks.

Tap water works perfectly fine!

If you want to go the extra mile, distilled water is recommended for longevity of the machine, but is definitely not required.

The pad can be handwashed and spot-cleaned, but please don't put it in the washing machine.

Machine washing can risk creating leaks in the tubing. A gentle handwash is the way to go!

The setup for the Flux Sleep is extremely quick and simple!

1. Unroll the mattress pad and place between your mattress and fitted sheet. The white connective piece should be facing the edge of the bed, near the location where the cooling unit will be placed.

2. Plug the connecting tubes into the the mattress pad and the cooling unit. If you have any issues with leaks, gently pull the tubes apart on each end before they are connected.

3. Unscrew the cap, and turn on the machine while slowly pouring water in. While not required, to maintain optimal longevity of your system, use distilled water.

4. Once water has completely flowed through the system, screw on the cap. The cooling unit can be placed on the ground or on your night stand, but we recommend the night stand for best results.

5. Set desired settings:
Hours: Adjusts the number of hours the system will run for. The number of hours left is shown on the screen, and will count down throughout the night.
Mode (Max/Eco): Adjusts the temperature of the cooling. Eco is great for cooler rooms or if you’re looking for just a minor temperature adjustment. Max is great for hot nights and sweaty sleepers. You can switch this throughout the night.

A few simple tweaks can make a big difference!

1. Make sure the vents on the sides of the cooling unit aren't blocked on any side.

2. Try placing the cooling unit on your nightstand instead of the floor. When it's at roughly the same height as the pad, water circulates faster and keeps the mattress pad cooler.

3. Use just one sheet between you and the mattress pad to get the full effect.

In the rare occasion there is a leak in the mattress pad, there's almost always one cause: Simply make sure the connector tubes are separated!

This leak occurs when the two connector tubes are still stuck together at the end before being plugged into the mattress pad.

Just unplug the tubes from the mattress pad, gently pull them apart at the ends, and then reconnect them to the mattress pad.

See the photo here for what they should look like when properly separated.

If you run into any other issues, be sure to contact our support here.

We want you to feel confident in your purchase, which is why every Flux Sleep system comes with a 100-Day Return Policy.

You have 100 calendar days from your delivery date to ensure inspect the product - check the quality, the size, and how it feels on your mattress.

To be eligible for a full refund, the Flux Sleep product must be unused, in brand-new condition, and in its original packaging. Due to sanitary reasons, we cannot accept used mattress pads (we would never want to sell a used pad to another customer!).

If your Flux Sleep system arrives or becomes damaged or broken, it is fully covered under our 1 year warranty. Please contact us immediately with photos of the damage, and we will prioritize a replacement Flux Sleep shipment to you at no additional cost.

To start a return, simply email hello@fluxsleep.com with your Flux Sleep order number, a brief reason for the return, and clear photos of the product and packaging. Once our team approves the request, we will provide the authorized return address to ensure your Flux Sleep refund is processed correctly.

Because we dispatch Flux Sleep orders within 24 hours, cancellation requests are highly time-sensitive. You may cancel your Flux Sleep order within 12 hours of purchase, provided it has not yet been processed for shipment. Please email hello@fluxsleep.com immediately with "CANCELLATION" in the subject line.

Once your Flux Sleep return is received and passes inspection, we will notify you via email. Your refund will be issued to your original payment method within 5–7 business days. Depending on your bank, it may take between 3 and 20 business days for the credit to appear on your statement.