Depends if you got an old trailer with a small unit or a newer unit with a 7500 carrier… with the later about 20 min or sooner. My units get to -20 in about 35-45 min. With half fuel I can run 45,500 with my utility and 45,000 on my Dane. I can run frozen or chilled no issues. Spec the trailer and reefer how you need it and you won’t have drama. I haul about as many dry loads that I can count on one hand each year.
This. We have a fleet of Great Danes with Carrier 7500X4s... because they cool better and faster than other combinations and use less fuel doing it.
Place I work for we run carrier and thermoking, I think the thermoking is quieter. I’ve pulled both. But both chill quickly. Never timed them though, hardly ever turn them off. Sip fuel too
TK is quieter, but the parts/service are more expensive and they don't cool quite as well as the Carrier (which can be loud as eff).
Surprising as it may sound....especially if you’ve been around awhile The New Carrier series...makes the newer TK Precednts sound like ol Carrier Thunderbirds.... New Carriers are surprisingly quiet and fuel efficient
You can also have a sound isolation package installed. I prefer the noise. I’m a weirdo and prefer to hear it’s running when I sleep so I know things are fine. If I hear off throttle differences I know I should get out of the bunk and investigate. I also like strait pipes on trucks and Harleys, so…
If your reefer is designed for chilled produce a very very long time indeed, specially if its a really hot day in Oklahoma around the 100 F mark I remember like it was yesterday having to pick up a frozen load from dispatch and could not leave until my temps were down to that specified by the shipper. It would go down so far then stop, I seriously thought I'd never leave, then another driver who had called in a fridge mechanic gave me a tip, he said try unhooking the trailer pull the truck forwards and leave a good gap there, I thought well nothing else had worked so far so I'll try anything to get this reefer back on the road, so unhooked it, and was amazed to see how quickly the temps started to drop problem solved within half an hour I was able to leave all up I probably wasted about 3 hours trying to get the temps down to that low point.
If you got a x4 and it’s properly maintained. It will get down to -10 in no time in Texas on a hot day. Right, maintained equipment works like it should. If there is the littlest flaw it goes in the shop. I do ice cream multiple stops in Texas summers. Too easy.