How long can frozen food stay frozen during shipping?

With proper insulated packaging and dry ice, frozen food can stay frozen for 24 to 48 hours. Gel packs maintain freezing temperatures for 12 to 24 hours in well-insulated containers. Summer conditions and longer transit times require additional coolant and higher-grade insulation.

What is the best packaging for shipping frozen food?

Expanded polystyrene (EPS) foam coolers inside double-wall corrugated boxes are the industry standard. For longer transit times, polyurethane foam-lined containers offer higher insulation value. Minimize air gaps inside the package to slow temperature rise.

Can I ship frozen food with gel packs instead of dry ice?

Yes, for short transit times like overnight or same-day delivery. Gel packs maintain temperatures in the 0 to 32 degrees F range. For multi-day shipments or hot conditions, dry ice is the safer choice because it maintains -109 degrees F.

What regulations apply to shipping frozen food?

The FDA's FSMA Sanitary Transportation Rule requires temperature controls and documentation during food transport. Dry ice shipments require DOT hazmat labeling (Class 9). State-level food handling permits may also apply depending on your location and distribution model.

How do I prevent frozen food from thawing during delivery?

Pre-freeze products to -20 degrees F or below. Use adequate insulation and coolant for your transit time. Minimize transit time with optimized delivery routes. Schedule deliveries within time windows when recipients can accept and refrigerate immediately.

Is it cheaper to ship frozen food with my own fleet or a carrier?

For local and regional delivery under 150 miles, own-fleet delivery with route optimization is typically more cost-effective and gives you full temperature control. For national shipping, parcel carriers with expedited cold chain services are more practical. The right choice depends on your delivery volume and how much control you need over the cold chain.