Cooling Gel or Phase Change: Which Mattress Is Cooler?

What Cooling Gel and Phase Change Mean on a Mattress Listing

Both words describe materials a mattress maker can put into a foam core or a cover. Cooling gel is usually a gel-infused memory foam: a layer of foam with gel mixed in, or a cover treated with a gel finish. In plain terms, the idea is that the gel helps move heat away from the sleeper instead of letting the foam trap it. Phase change material, often written as PCM, is a substance that absorbs heat when the sleeper is warm and releases it when the sleeper cools, by changing state the way wax melts and refreezes.

The stated pages this guide reads name gel far more often than phase change. The wall bed mattress page lists HexCloud gel foam, CradleGel memory foam, EverCool Fuze gel memory foam, CoolTwist gel memory foam, and covers called CoolTouch or Cold Touch across its mattress tiers. The cabinet bed collection page lists tri-fold gel memory foam and tri-fold gel pocket coil mattresses. Phase change material does not appear in those stated pages, so a buyer who wants that specific material should ask the maker what the cover and the core contain.

Why Heat Retention Matters in a Murphy Bed Cabinet

A Murphy bed differs from an open bed frame because, when closed, it becomes a tall panel or a cabinet. The mattress stands on end or folds into the box, and the space around it is enclosed. A foam mattress that sleeps warm can hold heat while it is stored, and the next sleeper meets a warm surface when the bed opens.

That is why the mattress section of a listing matters for a Murphy bed more than for a regular bed. The maker pages this guide reads state that a mattress for a Murphy bed should be engineered to stand on end without slumping or sagging over time. Cooling words appear in the same pages, which tells a buyer that heat build-up is part of the design conversation.

The enclosed cabinet also limits airflow around the mattress. That is worth keeping in mind when you compare a foam and an innerspring mattress, because the two sleep differently in a closed space. The breathability comparison explains the difference in general terms.

What the Maker Pages State About Cooling

The stated pages give a list of cooling names, not a measurement of coolness. No page says one mattress is cooler than another by a set number of degrees. The words a buyer can rely on are the material names in the construction list.

For example, the stated queen mattress tiers include a foam core mattress with a gel memory foam layer and a cool touch top, a second tier with a soft cooling gel foam top, and a third with anti-bacterial quilting and various cooling gels. The cabinet bed pages state that each model comes with a tri-fold mattress, that the included mattress has a Cool Touch Cover, and that a luxury latex tri-fold mattress is available with a cool touch cover and a plush feel.

What these words share is a promise of a material, not a result. A cool touch cover is a stated feature, and a gel layer is a stated layer. Whether that layer keeps a specific sleeper cool depends on the room temperature, the bedding and the sleeper, which the site cannot say.

How to Read the Cooling Words in a Listing

Start with the mattress section of the listing. Look for the word gel in the construction list: gel foam, gel memory foam, gel-infused foam, or a gel pocket coil. Look for a cover word such as cool touch, cool feel, or cold touch. A listing that names both a gel layer and a cool cover has more stated cooling features than one that names only a foam core.

Then look at the thickness. The stated mattress tiers run from 8 inches to 12 inches, and the cabinet bed includes a 6-inch tri-fold mattress. Thicker foam can hold more heat, so the mattress height and the cabinet depth are linked. When a listing gives a mattress height, compare it with the cabinet depth.

If the listing says nothing about cooling, that is a missing detail, not a sign that the mattress stays cool. The same applies to phase change material: if the word is absent, ask the maker.

• Gel foam, gel memory foam, or a gel pocket coil in the construction list
• A cover word such as cool touch, cool feel, or cold touch
• A mattress height stated in inches, so you can compare it with the cabinet depth
• A note that the mattress is engineered to stand on end without slumping

Questions to Ask Before You Buy

Before you buy a Murphy bed with a mattress, ask the seller or the maker what the cover is made of and what the foam layers are. Ask whether the mattress is engineered to stand on end without slumping, whether it folds in thirds, and what the stated thickness is.

Those four questions cover the details that matter most for a Murphy bed. The mattress compatibility guide walks through the rest of what a wall bed needs from its mattress.

• What is the cover made of, and can it be removed and washed?
• Does the mattress use a phase change layer, and where does it sit in the construction?
• Is the mattress designed to stand on end without slumping or sagging?
• What is the stated thickness, and does it match the cabinet depth?

Choosing for the Room You Are Furnishing

Choose the bed kind before you choose the cooling words. A guest room that becomes an office most days wants a bed that closes into a neat panel, and a cabinet bed includes its tri-fold mattress, which removes the separate mattress decision. A wall bed lets you pair the frame with a mattress tier of your choice, including a gel memory foam option from the stated list.

A studio with no spare wall can take a freestanding cabinet bed without mounting it to the wall. A room with enough wall space can take a wall bed with a mattress you selected for its cooling cover. A home office can use a wall bed with a desk, where the mattress stands on end when the desk is in use.

The difference between a cabinet bed and a wall bed shapes how the mattress is stored, so read that before you settle on a cooling feature. If you are building the frame yourself, a Murphy bed kit leaves the mattress choice open. The room decides the kind, and the kind decides which cooling words matter.

What to pick for your situation

Questions

Does phase change material appear in the maker pages this guide draws on?

No. The stated pages for wall beds and cabinet beds name cooling gel layers and cool touch covers, but none of them uses the phrase phase change material. If that material matters to you, ask the maker directly.

What is a cool touch cover?

A cool touch cover is a stated fabric or quilt top on a mattress. The wall bed mattress page describes a CoolTouch Top and a Cold Touch Cover on certain tiers, and the cabinet bed pages describe a Cool Touch Cover on the included tri-fold mattress.

Can I choose any mattress for a Murphy bed cabinet?

No. A wall bed or cabinet bed needs a mattress engineered to stand on end without slumping or sagging over time. The stated pages for wall beds and cabinet beds make that point, and cabinet beds include a tri-fold mattress that fits inside the box.

Is a gel layer enough to keep a mattress cool?

The maker pages state the material layers, not a temperature result. A gel layer is a stated feature, but the site cannot say whether it keeps a specific sleeper cool. Room temperature, bedding and the sleeper decide that.

Do cabinet beds include a mattress?

Yes. The cabinet bed pages state that each model comes with a tri-fold mattress designed to store inside the cabinet, and the comparison table on those pages lists a 6-inch tri-fold mattress across the models.