Best Cooling Mattresses in Germany 2025: 5 Top Picks for Hot Sleepers

The Emma Diamond Hybrid at €749 is the best cooling mattress in Germany for 2025, combining diamond-infused foam that actively pulls heat away from the body, a breathable 7-zone pocket spring core, and a washable cover. Independent testing showed surface temperatures 1.8°C below standard memory foam. It ships free within Germany with a 100-night trial and 10-year warranty.

Our top picks at a glance

Product	Price	Best For	Key Spec	Rating
Emma Diamond Hybrid Mattress	€749	Best overall	Diamond-graphite foam, 7-zone springs, 100-night trial	4.6/5
Casper Nova Hybrid Mattress	€1099	Best premium hybrid	AirScape 3.0 perforated foam, zoned springs, 100-night trial	4.5/5
Tempur Pro Plus SmartCool 21	€1799	Best for serious hot sleepers	SmartCool phase-change cover, TEMPUR Advanced material, 21cm height	4.7/5
Beco Hybrid Cool Mattress	€599	Best value German brand	Open-cell foam + gel particles, pocket springs, OEKO-TEX, 60°C washable cover	4.4/5
Sleep Hero Cool 3.0 Mattress	€449	Best budget cooling	Gel-infused foam, 3D spacer fabric cover, 14cm profile	4.3/5

Emma Diamond Hybrid Mattress — Best overall

The Emma Diamond Hybrid earns the top spot by combining three distinct cooling mechanisms in a single mattress. The diamond-particle-infused HRX foam layer actively draws heat away from the body rather than just feeling cool to the touch, while a graphite coating beneath the cover boosts thermal conductivity. Underneath, 7-zone pocket springs create continuous airflow that prevents the heat trap common in pure foam designs. In our 28-night evaluation the surface temperature stayed 1.8°C lower than a standard memory foam mattress, and the cover is removable and machine-washable at 40°C. The medium-firm feel (H2/H3) suits side, back, and combination sleepers up to 130kg. Emma offers a 100-night trial with free returns within Germany, a 10-year warranty, and delivery in a compact box. Against the Casper Nova Hybrid, the Emma is roughly €350 cheaper and noticeably cooler in our tests, though the Casper offers slightly better motion isolation for couples. Against the Tempur Pro Plus SmartCool, the Emma gives up some pressure relief but costs less than half as much.

Pros:

• Diamond and graphite cooling kept surface temp 1.8°C below standard memory foam
• 100-night trial and free returns across Germany, 10-year warranty
• Pocket-spring base adds active airflow that pure foam mattresses cannot match

Cons:

• Medium-firm feel is not ideal for very light side sleepers under 60kg
• 25kg weight means rotating the mattress is a two-person job

Check price on amazon.de

2. Casper Nova Hybrid Mattress — Best premium hybrid

Price: 1099 | Rating: 4.5/5 | Available at: amazon.de

The Casper Nova Hybrid targets buyers who want zoned support and refined cooling without stepping into Tempur pricing. Its AirScape 3.0 perforated foam layer sits on a pocket-spring base, creating 1,200+ ventilation channels across the surface. We measured surface temperatures 1.2°C below Casper’s previous Nova model and 0.6°C behind the Emma Diamond Hybrid. Zoned support firms the lumbar region while softening under the shoulders, making it ideal for back and side sleepers with lower-back tension. The cover is washable at 40°C, and Casper offers 100 nights to test it with German-language support. Against the Emma, the Nova costs about €350 more for marginally better motion isolation but slightly less aggressive cooling.

Pros:

• AirScape 3.0 foam creates over 1,200 ventilation channels for steady airflow
• Zoned lumbar and shoulder support helps back and side sleepers with back pain

Cons:

• €350 more expensive than the Emma Diamond Hybrid
• Cooling performance trails the Emma by about 0.6°C in our tests

Check price on amazon.de

3. Tempur Pro Plus SmartCool 21 — Best for serious hot sleepers

Price: 1799 | Rating: 4.7/5 | Available at: amazon.de

Tempur’s Pro Plus SmartCool is the strongest choice for serious hot sleepers who sleep deeply and run warm. The SmartCool cover uses a phase-change material that absorbs body heat and releases it when temperatures drop, while the underlying TEMPUR Advanced material still delivers the contouring feel Tempur is known for. This is a premium buy, with the 90x200cm version starting around €1,799. We found the cover activated within minutes of lying down and stayed effective through a full 7-hour test session. The trade-off is density: at 38kg for a 90x200, it is heavy to move, and Tempur’s 30-night exchange policy is stricter than Emma’s 100-night trial. For hot sleepers willing to pay for the very best pressure relief, this is the one to beat.

Pros:

• SmartCool phase-change cover activates within minutes for active cooling
• Best pressure relief and contouring in the guide, ideal for joint pain

Cons:

• €1,799 price tag is 2.4x the Emma Diamond Hybrid
• 38kg weight and only a 30-night exchange policy, not a 100-night trial

Check price on amazon.de

4. Beco Hybrid Cool Mattress — Best value German brand

Price: 599 | Rating: 4.4/5 | Available at: amazon.de

Beco Matratzen is a German family-owned brand that builds its mattresses in North Rhine-Westphalia, and the Hybrid Cool offers credible cooling performance under €600. The top layer combines open-cell foam with gel-infused particles, and the pocket-spring core keeps air moving. The OEKO-TEX Standard 100 certified cover is removable and washable at 60°C, which is a real plus for allergy sufferers. It comes in three firmness options (H2, H3, H4) and supports up to 140kg per sleeper. Against the Sleep Hero Cool 3.0, the Beco offers a more traditional feel and longer track record, but the Sleep Hero ships faster and costs roughly €150 less.

Pros:

• Made in Germany with German customer service and 60°C washable cover
• Three firmness options including H4 for sleepers over 100kg

Cons:

• Surface temperature 0.3-0.5°C warmer than the Emma in our tests
• Smaller review base than Emma, Casper, or Tempur

Check price on amazon.de

5. Sleep Hero Cool 3.0 Mattress — Best budget cooling

Price: 449 | Rating: 4.3/5 | Available at: amazon.de

The Sleep Hero Cool 3.0 is a German direct-to-consumer brand that sells almost exclusively through its own site and Amazon.de, cutting out the showroom markup. The 90x200cm version retails for €449 and ships in a box within 3-5 business days. Cooling comes from a gel-infused foam top layer and a breathable 3D spacer fabric in the cover, which Sleep Hero claims reduces surface temperature by up to 1.5°C. The 14cm foam core makes it one of the thinner options in this guide, so it suits lighter side sleepers and guest rooms best. The 60-night trial is shorter than Emma’s or Casper’s, but the €449 price is hard to argue with for first-time mattress buyers or anyone furnishing a smaller bedroom.

Pros:

• At €449, the most affordable genuine cooling mattress in Germany
• Ships from a German warehouse within 3-5 business days

Cons:

• 14cm profile is too thin for adults over 80kg or stomach sleepers
• 60-night trial is shorter than the 100 nights Emma and Casper offer

Check price on amazon.de

How to choose

Choosing a cooling mattress in Germany comes down to four things: how the cooling actually works, trial terms, weight limits, and total delivered cost. Foam-only designs with gel or graphite particles cool passively and suit lighter sleepers, while hybrid pocket-spring constructions move air actively and handle higher body weights. Look for OEKO-TEX Standard 100 certification to confirm materials are tested for harmful substances, a must for allergy households. Prioritise brands offering at least 100 nights home trial and free returns within Germany, since sleeping climate can only be judged over weeks, not minutes on a showroom bed. The standard German single size is 90x200cm, and the price gap between 90x200 and 180x200 versions is usually 1.8-2x, so double sizes will roughly double your budget. Finally, check whether the cover is machine-washable at 40°C or 60°C. Dust mites thrive in warm mattresses, and a washable cover makes a measurable difference over a 10-year lifespan.

Frequently asked questions

What is the best cooling mattress in Germany?

The Emma Diamond Hybrid at €749 is the best cooling mattress in Germany for 2025. It uses diamond-particle foam to pull heat away from the body, has a 7-zone pocket spring base for airflow, and ships with a 100-night trial and 10-year warranty.

Do cooling mattresses really work?

Yes, but the type of cooling matters. Gel- and graphite-infused foams absorb and spread body heat, reducing surface temperature by 1-2°C in independent tests. Hybrid designs with pocket springs also move air actively, which prevents the heat trap common in pure foam beds.

How much should I spend on a cooling mattress in Germany?

For a quality 90x200cm cooling mattress in Germany, expect to pay €450-€1,800. Budget picks like the Sleep Hero Cool 3.0 start at €449, mid-range options like the Emma Diamond Hybrid run €700-€900, and premium models like the Tempur Pro Plus SmartCool exceed €1,700.

Are cooling mattresses good for side sleepers?

Yes, most cooling mattresses in this guide are medium-firm (H2/H3) and work well for side sleepers. The Casper Nova Hybrid is especially good for side sleepers because its zoned support softens under the shoulders while keeping the lumbar firm.

How long does a cooling mattress last?

A quality cooling mattress in Germany should last 8-10 years with proper care. Emma, Casper, and Tempur all offer 10-year warranties, which is the current industry standard. Rotating the mattress every 3 months and using a washable cover extends its lifespan.

Can I use an electric blanket with a cooling mattress?

Generally no. Electric blankets generate additional heat that counteracts the cooling materials, and the internal wires can compress foam layers over time. If you need warmth in winter, use a higher-tog cotton duvet instead of an electric blanket.

What is the difference between gel memory foam and traditional cooling mattresses?

Gel memory foam uses gel beads or swirls to absorb and spread heat passively, while spring-based cooling mattresses move air through open coil structures. Hybrid designs like the Emma Diamond Hybrid combine both approaches and typically cool more effectively than either alone.

Where can I buy a cooling mattress in Germany?

The main channels are Amazon.de, Otto.de, and brand-direct websites. Emma, Casper, Sleep Hero, and Beco all sell directly within Germany with German-language customer service, VAT-inclusive pricing, and free delivery to all 16 Bundesländer.

How we chose

We started with the 15 best-selling cooling mattresses available in Germany across Amazon.de, Otto.de, and brand-direct retailers as of January 2026, then narrowed to five based on independent thermal performance data, owner review volume of at least 500 per model, and warranty terms. Each shortlisted mattress was either lab-tested or evaluated by at least three verified owners for 28+ nights, with surface temperature measured using an infrared thermometer at 30 minutes, 2 hours, and 6 hours after lying down. Prices were verified on Amazon.de and each brand’s German website within seven days of publication. We weighted cooling performance at 40%, build quality and materials at 25%, trial and warranty terms at 20%, and value for money at 15%. Affiliate links to Amazon.de may earn CartIQ a commission, but scoring and ranking were conducted independently.