Electric blankets sit on top — your body heat gets trapped between the blanket and mattress, the warmth is uneven, and your feet are always the last to catch up. A heated mattress pad works from underneath — the heat rises through the mattress surface evenly, the way a heated floor works. HEARTH has separate body and feet zones so you can run the foot zone warmer than the body zone, the way most people actually need. A pre-warmed bed from the first moment you get in.
Warmth from underneath. Body and feet zones. Independently controlled.
- BODY + FEET ZONES — INDEPENDENTLY CONTROLLED: most people need more heat at the feet than the torso — the extremities are where warmth deficit shows up most. HEARTH's independent body and feet zone controllers let you set each zone to the exact level you need: a moderate body setting and a warmer foot setting. Not a single-control blanket where you average the difference.
- 9 HEAT SETTINGS + HOLD: nine settings from low to high plus Hold (H) — a lock function that maintains your current setting without cycling. Use lower settings for sleeping, higher settings to pre-warm the bed before getting in, and Hold to sustain the exact setting you've found comfortable without the controller dropping to a lower auto-setting.
- 12-HOUR AUTO-OFF — SAFE TO SLEEP THROUGH: the 12-hour auto-off safety timer cuts power after a full night of use — whether you remember to turn it off or not. ETL certified and ultra-low EMF means it meets the safety standards for sustained overnight electrical use in direct contact with the body.
- MACHINE-WASHABLE — DETACH FIRST: detach both controllers and the pad is machine-washable on a gentle cycle. Most heated pads require careful hand-washing or dry-cleaning — HEARTH is designed for normal household laundry with the controllers removed. Air dry or tumble on low.
Pre-warming the sleep surface improves sleep onset and reduces nighttime waking caused by thermal discomfort at the extremities.
heat settings plus Hold — fine control over body and feet zones independently for precise overnight temperature
auto-off safety timer — cuts power after a full night of use without manual intervention
certified + OEKO-TEX STANDARD 100 — meets US electrical safety standards and textile toxicology certification
Bed warming and sleep onset data: Sleep Medicine Reviews. Thermal comfort and sleep continuity: Journal of Sleep Research. ETL safety standards: Intertek. Customer survey: Calena HEARTH users, 60-day trial.
Why a pre-warmed bed surface improves sleep
Warming the bed surface before sleep triggers peripheral vasodilation — blood flows to the skin surface, core temperature begins to drop, and the thermoregulatory cue for sleep onset activates sooner. The 5–10 minutes of pre-warming before getting in removes the cold-sheet delay that prolongs the time to sleep.
Cold feet are a documented cause of sleep fragmentation — the body's attempt to rewarm cold extremities creates partial arousals that interrupt sleep without full waking. HEARTH's sustained foot-zone warmth eliminates the overnight cold-foot trigger that fragments sleep in the early hours.
Sustained overnight warmth to joints and muscles — particularly relevant for people with arthritis, joint pain, or morning stiffness — supports circulation and reduces the inflammation-related stiffness that worsens with cold. The HEARTH provides this sustained thermal support through the full sleep cycle.
For anyone who gets into a cold bed — and anyone whose feet never warm up.
The cold-feet sleeper
Your body warms up reasonably quickly in bed but your feet stay cold for an hour and you can't fall asleep while they're cold.
HEARTH's foot zone heats your feet independently from the body zone — run it warmer at the feet, moderate at the body. Pre-warm for 10 minutes before getting in and you get in to a warm bed.
The cold-bed starter
You dread getting into a cold bed in winter. The 20-minute wait for your body heat to warm the sheets is enough to keep you up another 30.
Run HEARTH for 10 minutes before bed. Get in to a pre-warmed surface. The time-to-sleep delay from cold sheets is eliminated.
The joint-pain or arthritis sleeper
Cold nights worsen joint pain and morning stiffness. You wake up stiffer and more painful on cold nights regardless of other interventions.
Sustained overnight warmth to joints and muscles reduces the cold-induced inflammation and stiffness. HEARTH's 12-hour sustained heat keeps the thermal environment consistent through the full night.
The cold-extremity couple
One of you runs cold at the feet especially. An over-blanket doesn't solve the foot-cold problem as effectively as direct heat underneath.
The body and feet zone controls mean the foot zone can run warmer than the body zone — solving the cold-feet problem without overheating the rest of the bed.
The health-aware sleeper
You want the warmth benefit but you're conscious of EMF exposure and material safety in something you sleep on all night.
HEARTH is ETL certified for US electrical safety standards and OEKO-TEX STANDARD 100 certified for textile toxicology. Ultra-low EMF design. It meets the certifications required for sustained overnight body contact.
Fit it. Pre-warm. Get in to a warm bed.
Fit the Pad
Place the HEARTH on top of your mattress and under your sheets. The fitted skirt accommodates mattresses up to 18 inches deep. Ensure the controllers hang free at the side of the bed — do not trap them under the mattress.
Queen 80×60 inSet Your Zones
Set the body zone controller and foot zone controller independently to your preferred warmth levels. Start 10–15 minutes before bedtime to pre-warm the surface. Use the Hold (H) setting to sustain your chosen level through the night.
Body + Feet IndependentSleep. Auto-off Handles the Rest.
The 12-hour auto-off safety timer cuts power after a full night regardless of whether you remember to turn it off. Wake to a comfortable surface, not a cold bed.
12-Hour Auto-OffA blanket warms the top. A heated mattress pad warms the surface you sleep on — all night.
| Electric over-blanket | Calena HEARTH | |
|---|---|---|
| Heats from underneath — even surface | ✕ | ✓ |
| Body + feet zones independent | ✕ | ✓ |
| 9 settings + Hold function | ✕ | ✓ |
| 12-hour auto-off safety timer | ✕ | ✓ |
| ETL + OEKO-TEX certified | ✕ | ✓ |
| 30-day money-back refund | ✕ | ✓ |
Try it risk-free.
30-Day Money-Back Guarantee
Not satisfied within 30 days? Return it for a full refund — no questions asked. No hoops, no hassle.
1-Year Warranty
Every Calena product is backed by a full 12-month warranty against defects.
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We're so confident you'll love this product, we're giving you 30 days to test it. If it doesn't work for you, send it back for a full refund.
Everything you need to know about HEARTH.
How long does shipping take? +
Orders ship within 1–2 business days and typically arrive within 5–7 business days in the US. You'll receive a tracking link as soon as your order ships.
What's your return policy? +
We offer 30-day returns on all products. If you're not satisfied for any reason, contact us and we'll arrange a full refund — no questions asked.
Is the product safe and non-toxic? +
Yes. All Calena products are tested for safety and free from harmful chemicals. We only use materials we'd use in our own homes.
How is this different from a cheaper version on Amazon? +
Most cheap alternatives use low-grade materials that degrade quickly and have no scientific basis for their claims. Calena products are anchored in studied mechanisms, built from premium materials, and backed by real guarantees.
Where do you ship from? +
All orders are fulfilled from within the USA for fast, tracked delivery.
What's covered under the warranty? +
Every Calena product is covered by a 1-year warranty against manufacturing defects. If something is wrong, contact us and we'll make it right.