Description

Current Best By Date 09/18/2027

UniHeat 72 Hour Shipping Warmer

The UniHeat 72 Hour Shipping Warmer is the industry’s most trusted long-duration heat pack — the top choice for plant shippers, and reptile breeders who need dependable warmth for 1–3 day shipments. Built for reliability in changing climates, it provides stable heat for up to 72 hours, protecting temperature-sensitive items from cold damage during extended transit.

---

Why the UniHeat 72 Hour Shipping Warmer Matters

When shipments stretch beyond overnight delivery, steady and controlled warmth becomes essential. The UniHeat 72 Hour warmer offers the perfect balance — long runtime, smooth temperature curve, and safe performance for a wide range of live products.

Used worldwide, it remains the go-to solution for plant nurseries & reptile breeders. Its consistent heat output helps prevent cold shock in sensitive species and preserves the integrity of live plants and perishable goods through weekend delays or long-distance routes.

---

How the UniHeat 72 Hour Shipping Warmer Performs in Transit

Activation begins within about 30 minutes after exposure to air. The pack gradually rises to a peak surface temperature of approximately 140–145°F (60–63°C) within the first 10–12 hours.

It then maintains a steady, reliable warmth between 120–130°F (49–54°C) for nearly two full days before gradually cooling through the final 24 hours. By the 72-hour mark, the pack typically settles near 85°F, providing a gentle finish that keeps shipments stable through extended transit.

The red stripe identifies the breathing side, where the air holes are located — always face this side toward open space inside the box, not against walls or lids, for consistent airflow and even heating.

---

Key Features

Longest Duration Heat Pack

Provides consistent warmth for up to 72 hours — ideal for 2–3 day shipments or routes with variable weather conditions.

Gentle, Stable Heat

Perfect for plants, reptiles, insects, and fish. The gradual heat curve avoids temperature spikes and cold stress.

Adhesive Backing (Optional)

Some UniHeat warmers include a peel-and-stick adhesive backing for secure placement inside the box. Keeps the pack steady during shipping and promotes even heat distribution.

Compact & Easy to Use

Measures 4.5″ × 6″ — fits easily into insulated or Styrofoam-lined boxes without taking up space.

Safe & Eco-Friendly

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

Case Quantity

90 pieces per master carton (individually wrapped).

*Performance may vary slightly depending on box size, insulation, and outside temperature.

---

Pro Packing Tip

For best results, use inside a Styrofoam-lined or insulated shipping box. Pair with a PhazeLock PCM 23 Gel Phase Pack to stabilize temperature swings during transit.

Give the warmer a light shake before sealing your box — this helps air reach all internal cells for faster activation.

Before shipping, check current U.S. weather alerts to plan around extreme cold or unexpected delays.

---

Bottom Line

The UniHeat 72 Hour Shipping Warmer remains the most trusted choice for long-duration, cold-weather shipping. Whether you’re sending plants, reptiles, or tropical fish, this pack provides peace of mind and dependable performance for up to three days.

👉 Before shipping, review our Best Practices for Shipping Warmers to ensure safe and effective use.

Order now and ship with confidence.