Description

UniHeat 96 Hour Heat Pack (Shipping Warmer)

The UniHeat 96 Hour Heat Pack (Shipping Warmer) delivers reliable, long-duration heat for up to four full days — the perfect solution for extended shipping routes and weather-sensitive cargo. Built for performance and dependability, it’s trusted by plant shippers, insect suppliers, and professionals transporting temperature-sensitive cargo that must remain above freezing during transit.

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Why the UniHeat 96 Hour Heat Pack (Shipping Warmer) Matters

When shipments stretch across several days or pass through cold regions, temperature consistency is critical. The UniHeat 96 Hour warmer provides stable, controlled warmth that prevents freezing and temperature shock.

It’s ideal for multi-day ground deliveries, cross-country routes, or areas with unpredictable weather — offering unmatched duration when shorter heat packs aren’t enough. Professionals choose the 96HR model for its endurance and even heating profile that protects valuable or delicate items all the way to their destination.

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How the UniHeat 96 Hour Heat Pack (Shipping Warmer) Performs in Transit

Activation begins within 30–45 minutes after exposure to air. The pack then steadily climbs to a peak temperature of around 150°F (65°C) within the first 12–15 hours.

It maintains a consistent warmth between 120–130°F (49–54°C) for roughly 60 hours before gradually tapering off. By the 96-hour mark, it settles near 85°F, allowing a smooth and safe cool-down that keeps shipments stable through the final leg of transit.

The red stripe indicates the breathing side, where air holes are located — always face this side toward open air space inside the box rather than against walls or lids. Proper orientation ensures consistent activation and even heat throughout the shipment.

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Key Features

Extended 4-Day Duration

Provides up to 96 hours of stable heat, ideal for extended or cross-country shipments.

Wide Application Range

Protects plants, insects, and a wide range of temperature-sensitive cargo from cold damage during extended transit.

Adhesive Backing (Optional)

Some warmers include a peel-and-stick adhesive for secure placement inside the box. Keeps the pack steady and promotes even airflow.

Large Coverage Area

Measures 7.8″ × 6.4″, providing broad and consistent heat distribution for larger or multi-item boxes.

Safe & Environmentally Friendly

Non-toxic, non-flammable, and biodegradable. Dispose of safely with household waste.

Case Quantity

66 pieces per master carton, individually sealed for freshness and reliability.

*Performance may vary depending on insulation, box size, and ambient temperature. This product is intended for general temperature maintenance during shipping. Users are responsible for determining suitability for their specific application.

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Pro Packing Tip

Use inside a Styrofoam-lined or insulated shipping box for best results. Pair with a PhazeLock PCM 23 Gel Phase Pack to help moderate temperature swings during long hauls or uncertain delivery windows.

Before sealing the box, gently flex the warmer to loosen internal material and promote airflow — this helps with activation.

Always check current U.S. weather alerts before shipping to avoid extreme cold or transport delays.

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Bottom Line

The UniHeat 96 Hour Heat Pack (Shipping Warmer) offers unmatched reliability for long-distance, cold-weather shipping. Whether you’re sending live plants, insects, or other temperature-sensitive cargo, this pack provides consistent, safe heat for up to four days in transit.

👉 Before shipping, review our Best Practices for Shipping Warmers to ensure proper use and optimal results.

Order today — usually ships same day on orders placed before 12PM.