Yawnder Reviews
Quick verdict
Verdict: Editorial take — ClimateCool combines adjustable firmness with active cooling. Yawnder has not independently tested this model.
Short answer: ClimateCool combines adjustable firmness with active cooling. Sleep Number lists the 12-inch queen with a standard foundation at $5,499 as of October 28, 2026; an adjustable base costs extra. The brand advertises up to 15 degrees of cooling per side. Yawnder has not tested that claim.
Who the Sleep Number ClimateCool is for
ClimateCool combines adjustable firmness with active cooling. Sleep Number lists the 12-inch queen with a standard foundation at $5,499 as of October 28, 2026; an adjustable base costs extra. The brand advertises up to 15 degrees of cooling per side. Yawnder has not tested that claim.
- Great fit: Hot sleepers, menopausal night sweats, and couples where one person runs hot and the other does not.
- Build: 12″ tall, Climate collection.
- Smart features: Full Sleep Number app: active per-side cooling control, ResponsiveAir, nightly sleep score.
- Terms: For eligible Sleep Number direct purchases: 100-night mattress trial; return shipping is the customer’s responsibility and original delivery fees are not refunded. Warranty coverage depends on purchase date; qualified customers may be eligible for HSA/FSA payment.
Check today’s ClimateCool price
Yawnder earns a commission if you buy through our links. It does not change the price you pay or what we write. Sleep Number is not stocked in our San Diego showroom — this review is based on published construction and pricing, Sleep Number’s own owner documentation and our category testing of adjustable-air beds.
How a Sleep Number actually works
Every Sleep Number bed is an air bed at heart: an air chamber under each side of the mattress, inflated or deflated to a firmness number from 0 to 100, with foam and (on the newer models) micro-coils layered on top. Couples get two independent numbers on any size Queen and up.
What separates the 2026 models is what sits above the air: foam only on the ComfortMode beds, thicker targeted foam on ComfortNext, micro-coils in the Tri-Brid Lux and Ultra, and active temperature hardware in the Climate collection. All use adjustable air, but control systems, automatic features and return terms can vary by model and seller.
Compare the controls: Sleep Number says select ComfortMode mattresses support Responsive Air using the remote. ComfortMode does not use the Sleep Number app or Wi-Fi. Confirm the control system and included features for your exact purchase; Responsive Air is designed to maintain a chosen setting and may need to be switched on.
Sleep Number ClimateCool specifications
| Collection | Climate |
|---|---|
| Profile | 12 inches |
| Construction | Hybrid with contouring support, built-in cooling materials plus active cooling |
| Cooling | Adjust up to 15° cooler on each side |
| Base | Queen options include a foundation, foundation with legs, or FlexFit 2 smart adjustable base; prices vary |
| Smart features | App control of cooling and firmness, ResponsiveAir, nightly sleep score |
| Queen list price | $5,499 with standard foundation, as listed Oct. 28, 2026 |
| Terms | For eligible Sleep Number direct purchases: 100-night mattress trial; return shipping is the customer’s responsibility and original delivery fees are not refunded. Warranty coverage depends on purchase date; qualified customers may be eligible for HSA/FSA payment. |
How it performs, category by category
Active cooling
This is the product. Sleep Number describes cooling that can be adjusted on each side. Individual comfort, operating sound and overnight cooling have not been independently tested by Yawnder.
Cooling versus a cooling topper
ClimateCool integrates cooling into the bed; a separate cooling pad may cost less and may be movable to a future mattress. Check controls, running costs and each product’s current terms.
Pressure relief
Sleep Number describes contouring support in its 12-inch build. We have not tested pressure relief or compared its plushness with ComfortNext models; try your preferred settings and sleeping positions.
Firmness and automation
Same 0–100 per side with ResponsiveAir. The app becomes genuinely useful here because temperature and firmness schedules live in the same place.
Base
Sleep Number offers ClimateCool with a standard foundation, foundation and legs, or a FlexFit 2 smart adjustable base. The foundation is not adjustable; the FlexFit option costs more and allows head and foot adjustment. Confirm the current price and configuration before ordering.
Running cost
Active cooling means a powered unit running most of the night. Usage depends on settings and electricity rates; ask Sleep Number for power specifications. The cooling system adds powered components.
Editorial assessment of ClimateCool
This assessment relies on manufacturer documentation and category experience. Yawnder has not tested this model and does not assign it performance scores.
Methodology: Yawnder has not tested this exact Sleep Number model. This review interprets manufacturer documentation and our experience evaluating adjustable-air mattresses.
Pros and cons
What we like
- Genuine per-side active cooling, up to 15 degrees.
- No subscription and no bedside water unit, unlike some competitors.
- Full app control of temperature, firmness and sleep tracking in one place.
- Integrated base included in the list price.
What we would change
- $5,499 list for a Queen.
- The 12-inch profile and feel should be compared with ComfortNext Lux and Ultra; we have not tested their relative plushness.
- The standard foundation is fixed; the FlexFit 2 adjustable-base option costs more and is final sale.
- Powered cooling adds mechanical parts to a bed that already has a pump.
The 2026 Sleep Number lineup compared
Sleep Number cut its range from twelve mattresses to seven in March 2026 and reorganised them into three collections: ComfortMode (remote control; Responsive Air on select configurations), ComfortNext (app, ResponsiveAir and the Tri-Brid micro-coil builds) and Climate (active temperature control). Here is where the ClimateCool sits.
| Model | Collection | Height | Smart features | Queen list |
|---|---|---|---|---|
| ComfortMode | ComfortMode | 10″ | Remote; select configurations support Responsive Air | $1,999 |
| ComfortMode Lux | ComfortMode | 11″ | Remote; select configurations support Responsive Air | $2,499 |
| ComfortNext | ComfortNext | 12″ | App + ResponsiveAir | $2,999 |
| ComfortNext Lux | ComfortNext | 13″ | App + ResponsiveAir | $3,999 |
| ComfortNext Ultra | ComfortNext | 14″ | App + ResponsiveAir | $4,499 |
| ClimateCool (this review) | Climate | 12″ | App + ResponsiveAir | $5,499 |
| Climate360 | Climate | 13″ | App + cooling & warming | $10,249 |
ComfortMode, ComfortMode Lux and ClimateCool queen prices checked against Sleep Number on October 28, 2026; other figures were last checked in August 2026. Prices and promotions can change.
Where this model fits
- Versus ComfortNext Ultra: The listed queen price is $1,000 more than ComfortNext Ultra, including a standard foundation; compare current configurations and full delivered costs.
- Versus Climate360: Climate360 widens the range to warming as well as cooling and includes the smart adjustable base, at roughly $10,249 list.
- Versus a cooling mattress pad: a separate pad may cost less and be transferable; compare the total cost, setup and noise before deciding.
Also read our full Sleep Number model comparison, is a Sleep Number worth it? and the Sleep Number cost guide.
What to check before buying
On October 28, 2026, Sleep Number listed a queen ClimateCool with its standard foundation at $5,499, with a foundation and legs at $5,799, and with a FlexFit 2 smart adjustable base at $6,899. The listing included premium delivery and setup. Prices, offers and configurations change; see the current product page. The mattress is listed at 12 inches.
The system uses powered active cooling and adjustable air chambers. Ask Sleep Number to demonstrate the sound, controls and temperature range; check outlet access, Wi-Fi and app compatibility. If sharing the bed, try both sides, your usual sleeping positions and the edge. Cooling claims are manufacturer claims, and Yawnder has not measured this model’s overnight temperature, motion transfer or pressure relief.
For eligible Sleep Number direct mattress purchases, the company advertises a 100-night trial. Contact Sleep Number to authorize a return; original delivery fees are not refunded and return shipping is the customer’s responsibility. A one-time exchanged product is final sale with no new trial, and FlexFit adjustable bases are final sale. Confirm treatment of the foundation and setup charges before ordering; other sellers may have different policies. See Sleep Number’s return guidance.
Frequently asked questions
How cold does ClimateCool get?
Sleep Number advertises cooling up to 15 degrees on each side, subject to its testing conditions. Yawnder has not independently verified that claim or measured overnight cooling.
Does ClimateCool warm as well as cool?
No. Cooling only. Climate360 is the model that both cools and warms, across a wider range.
How much is ClimateCool?
On October 28, 2026, Sleep Number listed the queen mattress with a standard foundation at $5,499. Foundation with legs and FlexFit 2 configurations cost more; check live prices.
Does it need a subscription?
No. The app and cooling features are included — there is no monthly fee for the temperature control.
Is it better than a cooling topper?
ClimateCool integrates active cooling into the bed, while a separate cooling pad may cost less and can often move to another mattress. We have not tested the two side by side.
The verdict
Editorial verdict. ClimateCool combines adjustable firmness with active cooling. Yawnder has not independently tested this model. If heat is the reason you are shopping — night sweats, a hot bedroom, a partner who runs cold while you cook — compare its cooling features against the other Climate model and a separate cooling pad. ComfortNext Lux costs less at the listed queen prices, but we have not tested how the two compare for comfort.
Shop the ClimateCool at Sleep Number
Reviewed by Ben Trapskin · Yawnder Reviews
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