UniHeat 40 Hour Multi-Purpose Shipping Warmer – Heat Packs (50 Pack)

Features

• Bulk 50-pack ideal for shops, breeders, nurseries, and aquatics vendors
• Provides up to 40 hours of steady, reliable heat—great for overnight and 1–2 day routes
• Versatile: supports live reptile shipping, tropical plant shipping, aquarium fish & corals, and insect orders
• Oxygen-activated—open wrapper, introduce air, and reach working temp in ~15–30 minutes
• Single-use, non-toxic, and disposable—streamlines cold-weather and shoulder-season shipments
• Trusted by pet shops, breeders, nurseries, and eCommerce operations worldwide

Product Description

The UniHeat 40 Hour Multi-Purpose Heat Pack – 50 Pack delivers gentle, consistent warmth for short to mid-length transits. Perfect for overnight and 2-day routes, these oxygen-activated heat packs help protect reptiles, tropical plants, aquarium fish/corals, invertebrates, and other temperature-sensitive goods during cooler weather.

Activation is simple: open the wrapper, shake lightly to introduce oxygen, and allow 15–30 minutes for the pack to ramp up before loading into an insulated shipper with modest ventilation. Stocking the 50-count keeps teams ready for weekly shipments without committing to a full case.

Choose 40-hour warmers when you want reliable output for overnight to 48-hour deliveries in mild to cold conditions. For longer or harsher routes, step up to 72-hour or 96-hour formats.

FAQs

When should I use 40-hour vs. 72- or 96-hour warmers?

Use 40-hour for overnight and 1–2 day routes in mild to cold weather. Choose 72-hour for typical 2–3 day transits and 96-hour for 3–4 day or harsh winter routes.

How long do I pre-activate a 40-hour pack?

Allow 15–30 minutes after opening to reach steady output. Don’t smother the pack—provide a small air gap for oxygen flow.

Do these require ventilation holes in the shipper?

Yes. They are oxygen-activated. Provide small ventilation holes or an air gap so the pack maintains consistent heat in transit.

How many 40-hour warmers should I use per box?

For compact, insulated shippers, one is often sufficient. Use two+ for larger volumes, colder routes, or higher heat demand—space them for airflow.

Are these safe for reptiles, plants, fish, corals, and insects?

Yes—when used properly. Avoid direct contact with animals or foliage. Validate your packing method with a thermometer before live or high-value shipments.

How should I store the 50-pack?

Keep sealed in a cool, dry, low-humidity environment. Follow the printed best-by date and avoid exposing unused packs to air until ready to ship.