Sleep Number

Climate™ Cool PT8

Sleep Number Climate™ Cool PT8

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.

Overall

#92 in

Mattress

according to Reddit Icon Reddit

Sentiment score77% positive
10
1
2

Top Pros

Top Cons

Last updated: Jul 5, 2026

Reddit Reviews

Reddit IconMotherofDragons52
9 months ago

Climate Cool from Sleep Number. 100%

Reddit IconProfessionalVast8512
about 1 month ago

I’m stuck with this and not sure what I’m doing wrong anymore. I go to bed fine, room is cool, AC is running, but a few hours later I wake up feeling warm like the mattress is holding heat under me. It’s not full sweating most nights, just uncomfortable enough that I keep waking up and can’t stay asleep properly. I’ve already tried different mattresses, toppers, and bedding changes and nothing really seems to last through Phoenix summers. Has anyone here found something that works long term in this heat? I keep seeing people mention adjustable air chamber mattresses as better for temperature control since they don’t trap heat like foam, but I don’t know if that’s really noticeable in real life. I would really appreciate honest experiences from people in Phoenix because I’m running out of ideas. Update: Thanks for all the inputs. I tried the Sleep Number ClimateCool and it actually helped a lot with that overheating at night. The adjustable firmness plus the active cooling made it more comfortable and I wasn’t waking up as warm anymore.

Reddit IconMobile-Tadpole1792
8 months ago

I have a sleep number/split king. Great bed, expensive but it will last a long time. My first sleep number I gave to my daughter.

Reddit IconPaperwife2
about 2 months ago

I’ve had 3 spine surgeries among a ton of other medical stuff (doing pretty well now) and we got a Sleep Number Cal-King Full Split years ago and it has been worth every penny. I love being able to control how firm/soft my bed is and if I need my head or feet raised it just takes a tap to make it so. My husband just has normal pain when he over does things, but he loves to be able to adjust everything too so no matter what he’s doing (working on his laptop, reading, watching TV) he’s positioned comfortably. Plus it doesn’t get a big divot in it like our former traditional mattresses.

Reddit Icon17399371
6 months ago

We've got a split head Sleep Number and it's been great. Can adjust firmness easily. Can put a pad on it if you want. Has really worked out for us.

Reddit IconinvisibleStalker3001
10 months ago

i bought a king size sleep-number 16 years ago, mostly because i couldn't get a king size mattress up the stairs and around the corner. I will never go back to a steel spring mattress. it comes apart and you can wash the cover. you can replace pieces if they wear out. It really is a BIFL purchase.

Top Mattress on Reddit

1
Brooklyn Bedding Signature Hybrid

Brooklyn Bedding

Signature Hybrid

93% positive of 57 users

Durable, comfortable, adjustable firmness; excellent value.

3
Helix Midnight Luxe

Helix

Midnight Luxe

80% positive of 107 users

Pain relief, side sleeper support; but some find too soft.

4
Purple The Purple Mattress

Purple

The Purple Mattress

66% positive of 313 users

Unique grid feel, cool; but heavy, expensive, polarizing.

5
Brooklyn Bedding Aurora Luxe Cooling

Brooklyn Bedding

Aurora Luxe Cooling

89% positive of 38 users

Excellent cooling, zoned support for heavier sleepers.

Rankings by Use Case

Best for Ease of movement & sex

Novaform - Platinum 16.5" Luxury Hybrid Mattress

Ranked #1

Novaform - Platinum 16.5" Luxury Hybrid Mattress

Individuals who toss and turn frequently, or couples who prioritize a mattress that is responsive and bouncy for sexual activity, and dislike the "sinking" feeling of memory foam.
See rankings →

Best for Heavy & plus-size sleepers

Brooklyn Bedding - Titan Plus Luxe

Ranked #1

Brooklyn Bedding - Titan Plus Luxe

Individuals with higher body weights (typically 230 lbs or more) who find that standard mattresses quickly sag, lose support, and cause back or joint pain.
See rankings →

Best for Hot sleepers

Purple - The Purple Mattress

Ranked #1

Purple - The Purple Mattress

Individuals who consistently wake up feeling hot or sweaty, and find that their mattress absorbs and retains body heat throughout the night.
See rankings →

Best for Long-term durability

Sleep EZ - Organic Latex Mattress

Ranked #1

Sleep EZ - Organic Latex Mattress

Buyers who view a mattress as a long-term investment and want to purchase one that will maintain its support and comfort for over a decade, prioritizing total cost of ownership over a low initial price.
See rankings →

Best for Motion isolation for couples

Helix - Midnight Luxe

Ranked #1

Helix - Midnight Luxe

Couples or co-sleepers who are easily woken up by a partner's tossing, turning, or getting in and out of bed.
See rankings →

Best for Natural & organic materials

Sleep EZ - Organic Latex Mattress

Ranked #1

Sleep EZ - Organic Latex Mattress

Health-conscious individuals or those with chemical sensitivities who want to avoid synthetic foams, chemical off-gassing, and potentially hazardous materials like fiberglass in their sleep environment.
See rankings →

Other Reddit Recommendations:

FAQs