Heat pack or no???

[stephj03]

About to ship a few Acros cross country.
Socal to Memphis hub to Miami. Temps seem fairly moderate. Should I still use a heat pack?

I have access to sealy unibody styros and ones with individual foam panels.

Socal at departure and overnight low 69/61
Memphis overnight low 40
Miami overnight low and arrival high 65/48

 

[NeonRabbit221B]

I would. Never know how long it will sit on a truck or how the weather will change within the next few days

 

[malacoda]

I would. Keep in mind, if it moves by air, temps in cargo holds will drop with altitude. And if moves solely by truck, it will still be moving overnight through regions (AZ, NM, OK) that can get pretty chilly at night at this time of year.

Last week I had a ORA clam come from FL to western NC overnight. Even though our daytime temps have been in the upper 50s ... and despite the fact that it was packed with a heat pack ... the water temps still dropped enough that the clam didn't make it.

 

[stephj03]

I wanted to bump this thread to see if there is a consensus on best practices for:

1. When to include a heat pack
2. When to include no pack
3. When to include a cold pack

I'll be shipping to the north east this wk where temps are still a little low so I'll use a heat pack for that.

But let's say the temp the departing and arrival temps are in the 70s and both hubs are in the 50s/60s would you still ship with a heat pack???

 

[NeonRabbit221B]

I would be interested to see a guide on when to use them and when to use cold packs. Shipped a large shippment to Houston and it was 60 near me and 76 in Houston so I ended up using two for a 45 frag shipment and everything made it but it seemed like luck to me on weather.

In your case I could use a heat pack or even two depending on size.