The best mattress for hot sleepers is usually a pocketed-coil or hybrid bed with a thin comfort layer and a cover its maker built to move heat. A hot sleeper, for this guide, is anyone who wakes up warm or damp under ordinary bedding. Coils leave open space under the body. Sleep Foundation says many mattress models, especially traditional memory foam, risk "trapping body heat rather than allowing for sufficient airflow".
At Merit Home Furniture on Vancouver Island, the coil bed I'd look at first for a hot sleeper is the Restwell Nightingale. It is listed for our Duncan store at $1,299.00 in Twin and $1,499.00 in Queen, before applicable taxes. Restwell's spec sheet names its cover COOLER surface fabric, over a micro coil layer, zoned latex and a pocket coil unit. Over it I'd put the Health Guard Cool Ice protector, $189.00 to $249.00 depending on size.
Then there is the Island itself. At the Nanaimo Airport weather station, average relative humidity at 6 a.m. is 78.5% in July and 92.8% in January, per Environment and Climate Change Canada. A sleep researcher's finding that humid heat disturbs sleep more than dry heat is why the bedroom air gets its own section below.
What mattress does not trap heat?
A mattress that does not trap heat has open space where air can move. That means coils, latex, or a hybrid with only a few inches of foam over its springs. Sleep Foundation, which tests beds for heat with thermal tools, puts it in material terms. Its cooling guide says "coil systems and ventilated latex base layers circulate air throughout the interior of the mattress to help maintain a comfortable temperature". It calls latex a "naturally breathable material that retains minimal heat".
Memory foam is the material it flags. Dense foam moulds to the body, and the same hug that relieves a hip leaves little room for air around it. That is why every foam bed sold as cooling carries something extra: a gel, a copper or graphite infusion, or a phase-change layer under the cover.
A hybrid sits between the two, with a coil unit under a foam comfort layer. How warm a hybrid sleeps depends on that top layer, which is why the testing sites score hybrids one at a time instead of as a group. A pocketed-coil or hybrid bed is the starting point, and the cover and the layers above the coils decide the rest.
So the order I'd shop in, picking a mattress that runs cool, is construction first, then the cover, then the protector, then the pillow. A cooling cover on a deep foam bed is still a deep foam bed. A plain coil bed under a plastic-backed protector loses much of what the coils gave it.
Cooler-sleeping mattresses at Merit, with each maker's heat claim
Our Duncan store lists 14 mattresses, 8 Restwell and 6 Restonic. On 11 of them the maker gives a cover or quilt fabric called cooling, COOLER or Tencel. These eight are the ones I'd put in front of a hot sleeper, at the live listing prices on 16 October 2026, before applicable taxes. Any cooling wording below is the maker's, never a test of ours.
| Mattress | Build and cover | Price |
|---|---|---|
| Restwell Nightingale | Firm Top, tight top, 12 1/2 inches. 1,200-count pocket coil under a 1,400-count micro coil layer and zoned latex. Cover: COOLER surface fabric. | $1,299.00 Twin, $1,499.00 Queen |
| Restwell Canary | Firm Top, tight top, 12 inches. 1,200-count pocket coil, with 1/2 inch of zoned gel memory foam. Cover: Tencel fabric. | $849.00 Double, $899.00 Queen |
| Restwell Starling | Medium Top, Euro top, 13 inches. Pocket coil, micro coil layer and zoned latex. Cover: COOLER surface fabric. | $1,299.00 Twin to $1,749.00 King |
| Restonic Vernazza | Sleeps medium overall, Euro top, 16 inches. 1 inch of Talalay latex over a foam-encased zoned pocket coil. Quilt: Tencel Cooling Fabric with Joma Wool. | $2,249.00 Twin to $3,299.00 King |
| Restonic Notte | Sleeps medium overall, Euro top, 15 inches. 1 inch of copper memory foam over a foam-encased zoned pocket coil. Quilt: Copper Cooling Fabric with gel foam. | $1,388.00 Twin to $2,088.00 King |
| Restwell Robin | Plush Top, Euro top, 12 1/4 inches. Gel foam and zoned gel memory foam over a 1,200-count pocket coil. Cover: Tencel fabric. | $799.00 Twin to $1,299.00 King |
| Restonic Treviso | Sleeps plush overall, Euro top, 16 inches. 1 inch of Talalay copper latex. Quilt: Tencel Cooling Fabric with Joma Wool. | $2,249.00 Twin to $3,299.00 King |
| Restwell Sparrow Elite | Plush Top, pillow top, 15 1/2 inches, with 2 1/2 inches of Conforma Touch foam among its layers. Cover: COOLER surface fabric. | $2,199.00 Queen |
Restwell's spec sheets put COOLER surface fabric on the Nightingale, Starling and Sparrow Elite, and the Nightingale's listing calls it a cool-feel cover. The Canary and Robin get Tencel fabric with a silk and wool fibre blend. Restwell makes no temperature claim beyond those names. The rest of that maker's beds are in Restwell's COOLER and Tencel covers and the models around them.
Tempur-Pedic says the Align's cover has "moisture wicking fibres to draw moisture away from the body". It adds that the phase-change material under that cover "draws heat away from the body to help keep sleepers comfortable during the night". The Align is all foam and is carried at our Campbell River store, where a call gets our best price on one. The rest of that range is covered under the moisture-wicking Super-Stretch cover and the Align beds.
Restonic names the Notte's top quilt Copper Cooling Fabric, and the Vernazza's and Treviso's Tencel Cooling Fabric, and leaves the claim at the name. The Mondena is the Notte's plush sibling with the same copper quilt, at the same prices.
Which is the coolest mattress to sleep on?
No independent lab has scored these eight against each other, so the ranking here is by construction and by the cover each maker names. On that basis the Nightingale comes first for me: a tight top, micro coils and latex above the pocket coils, and a COOLER cover. The Canary is the lower priced firm bed, with a Tencel cover over a thin layer of gel memory foam.
A sleeper who wants more give can step to the medium Starling, Vernazza or Notte, then the plush Robin and Treviso. Each step adds comfort material, which by the reasoning above holds a little more heat. The Sparrow Elite sits last for a hot sleeper. Its 15 1/2 inch pillow top puts the most foam of the eight between the sleeper and the coils, COOLER cover or not.
Island humidity and hot sleepers: why the bedroom air comes first
Humidity matters to a hot sleeper because sweat cools the skin only when it evaporates, and damp air slows that down. Okamoto-Mizuno and Mizuno, writing in the Journal of Physiological Anthropology in 2012, reviewed the research on heat and sleep. They wrote that "Humid heat exposure further increases wakefulness, decreases REM and SWS". SWS is slow-wave sleep, the deepest stage.
The same review puts comfortable bed climate, the pocket of air between a person and the covers, at "around 32°C to 34°C, 40% to 60% relative humidity". That is warmer than most people expect. The problem in a hot bed is often the wet half of that pair.
| Humidity figure | Value |
|---|---|
| Nanaimo Airport, July, 6 a.m. average | 78.5% relative humidity |
| Nanaimo Airport, July, 3 p.m. average | 52.7% |
| Nanaimo Airport, January, 6 a.m. average | 92.8% |
| Nanaimo Airport, 6 a.m. average across the year | 86.9% |
| Health Canada's indoor range | between 30% and 50% |
| Comfortable bed climate (Okamoto-Mizuno and Mizuno) | 40% to 60% |
The airport figures are outdoor readings from the 1981 to 2010 climate normals, so they are not a bedroom reading. Still, they show the hour people sleep is the dampest of the day here, and that the coast stays damp in winter. Air at 6 a.m. in July is far wetter than the same air at 3 in the afternoon.
Health Canada's mould guidance recommends keeping indoor humidity between 30% and 50%. It suggests a hygrometer, which it calls "an inexpensive tool available at most hardware stores", and a dehumidifier or air conditioner if the reading runs high. A reading on the nightstand for a week settles the question before a new bed does.
Sleep Foundation adds that most sleep experts recommend a bedroom between 60 and 68 degrees Fahrenheit at bedtime, roughly 16 to 20 degrees Celsius. A cool room with wet air can still feel hot in bed.
My own read on the Island is that a bed which feels hot is often fighting the damp, not the heat. I'd measure the bedroom before replacing a mattress for that reason, because a dehumidifier costs far less than the Nightingale. Damp air is hard on the bed itself too, which each maker's care rules address.
Mattress protectors, toppers and pillows for hot sleepers
A mattress protector for a hot sleeper is one with a breathable waterproof layer and a top fabric its maker says moves heat or moisture. The protector is the layer touching the sheet, so a cheap one can undo a cool bed. Health Guard says its Cool Ice protector stays breathable without "trapping heat", and that word is the one to look for on any protector's backing.
| Protector | What the maker or listing says | Price by size |
|---|---|---|
| Health Guard Cool Ice | Health Guard: "Cool Ice surface helps pull excess heat away as you sleep". Top is 45% high-molecular polyethylene, five-sided waterproof. | $189.00 to $249.00 |
| Health Guard Tencel Dream | Tencel (a wood-pulp fibre) surface over a waterproof, breathable membrane. | $109.00 to $149.00 |
| Health Guard Bamboo Plus | Bamboo-blend surface over a waterproof, breathable backing. | $59.00 to $89.00 |
The warranty side of protectors, and the plastic-backed kind, is in a breathable protector and the rest of that guide.
Toppers are the other common fix, and the one I'd be most careful with. Merit lists no cooling topper online. A memory foam topper puts a layer of the material Sleep Foundation flags directly under the sleeper, which works against a cool coil bed. If firmness is the real complaint, the mattress is the thing to change.
Pillows are the last layer, and these are the ones whose listings name a cooling cover or material:
- Health Guard Cool Ice pillow, $109.00: gel memory foam, sold as a pillow for hot sleepers.
- Natura Dream granulated latex, $89.00 in Queen and $119.00 in King, for someone who wants latex instead of foam.
More choices are on the pillow and protector listings. Protectors and pillows can join a mattress delivery from Duncan, or wait at the store for free pickup.
How cooling mattress tests work, and what they leave out for an Island buyer
The online cooling tests measure surface heat over a short lie-down, and they rank online brands. Mattress Clarity's testing team takes a thermal gun reading after a 7-minute nap and scores cooling out of 5. Only beds at 4/5 or better made its list.
Its best overall pick, a hybrid from an online brand, scored 4.5/5 for cooling. The same review gives it 4.2/5 for pressure relief and 4.8/5 for edge support. NapLab says it has tested 470+ mattresses, and its edge support test measures how far the edge sinks, in inches, sitting and lying.
Sleep Foundation's testers take beds home for up to 3 weeks, and one cooling hybrid on their list scores 9.0/10 for hot sleepers. Merit doesn't carry either of those two beds, or most of the others on these lists, which come from online brands.
The tests are still useful for one thing: they agree that coils and breathable covers beat dense foam. What none of the three describes is a humidity test. A seven-minute reading in a lab is a long way from eight hours in a damp Island bedroom at the 6 a.m. low point. Edge support and pressure relief matter too, but a store visit answers those faster than a score.
- Call ahead. The Duncan store has display models, not every bed, so a call tells you which of the eight above are set up to try.
- Give each bed time. Settling in enough to judge a mattress can take up to 15 minutes, by the Better Sleep Council's reckoning. Heat builds over the same stretch.
- Feel the spot afterwards. When you get up, put a hand where your back was and compare it with the surface beside it.
- Ask for the cover name. Then read the maker's own claim for it, and the protector's backing, before deciding.
When a cooling mattress will not fix hot nights
Night sweats are a health question before they are a mattress question. HealthLink BC defines night sweats as "heavy sweating during sleep," different from sweating in a warm room or under too many blankets. Its list of causes includes an overactive thyroid, anxiety, too much alcohol, sleep apnea, menopause, some infections and some cancers.
If you often wake soaked, or the sweating comes with fever, chills, pain or unplanned weight loss, talk to your doctor. HealthLink BC's nurses are also on the line at 8-1-1, any time of day. No bed on this page treats any of those causes.
A cooling cover will not turn a foam bed into a coil bed. Someone who loves the deep hug of memory foam is choosing a warmer feel, whatever the cover says. The Align, carried at our Campbell River store, is the cooler-claimed version of that choice, and it is still foam.
A plush pillow top will warm a coil bed back up. The thicker the comfort layer over the springs, the less the coils do for a hot sleeper.
Merit has not tested any of these beds for heat, and nobody can promise a cover will hold a temperature through a whole night. A $189.00 protector and a hygrometer are the cheap tests to run first, before $1,499.00 on a queen Nightingale.
Ordering a cooler mattress, protector or pillow from Duncan
Mattresses take 2 to 3 weeks and are then ready for pickup or delivery. From Duncan, delivery costs $150 across the Island, assembly included; a run to some Gulf Islands is possible, and the store has the details. A mattress going a long way across the Island may need a different shipping method, and we'll say which when the delivery is booked.
Pickup at the Duncan store is free. The other three stores' delivery terms are not confirmed here, so a call to the store nearest you is the way to check.
Anything we special order for you is placed against a 24% deposit. Exchanges are welcome for up to 30 days, decided case by case.
Warranty runs through each maker, and Merit backs it, orders the parts and handles repairs. Health Guard puts a 20-year warranty on the Cool Ice protector. Restwell's spec sheets give its Contour Collection beds a 10-year limited warranty, and Restonic backs its Comfort Care beds with a 10-year non-prorated one. Every bed and protector here sits in every mattress we carry and the bedding beside it. We finance. Ask us how.* A cooler bed can be paid for over time with Fairstone®, the lender behind our plans.
*On approved credit. Terms and conditions apply. An annual fee will be charged to your account as set out in the Retail Credit Agreement. See our Financing page for more details about our plans.
Where the cooling and humidity numbers come from
- Sleep Foundation, Best Cooling Mattress for Hot Sleepers, checked October 2026.
- Okamoto-Mizuno K., Mizuno K., Effects of thermal environment on sleep and circadian rhythm, Journal of Physiological Anthropology, 2012, checked October 2026.
- Environment and Climate Change Canada, Canadian Climate Normals 1981 to 2010, Nanaimo A, checked October 2026.
- Health Canada, Mould, checked October 2026.
- HealthLink BC, Night Sweats, checked October 2026.
- Tempur-Pedic Canada, TEMPUR Align Series, checked October 2026.
- Health Guard, Cool Ice Mattress Protector, checked October 2026.
- Better Sleep Council, Choosing the Best Mattress, checked October 2026.
- Mattress Clarity, Best Cooling Mattresses and NapLab, Best Mattress for Cooling, checked October 2026.
- Merit Home Furniture product listings for every mattress, protector and pillow named here, with Restwell's spec sheets and Restonic's layer lists, prices read 16 October 2026.
Asking about a cooler bed at the Duncan store
The Merit store in Duncan is at 107 Ingram St and is open Monday to Saturday, 9 to 5. A call first tells you which coil and hybrid beds are on display, and you can ask for me by name. Bringing the protector question along saves a second trip.
Guides to feel and construction are gathered on one page, and the full mattress list gives each bed's cover where the maker names one.