Given the lucrative experience we have had driving reefer-equiped trucks for six years (with a couple dry box trucks also in that time), we would not hesitate to purchase a reefer-equipped truck again, even in these recessionary times. Our reefer has made us eligible for loads that enabled us to buy a great truck and quickly pay it off, and put money in the bank too.
That said, we would not buy a reefer truck if we did not run with FedEx Custom Critical or could not find a carrier that had as much reefer freight as FDCC can offer.
Also note that a reefer is best seen as part of a total truck package, not as a single component that will produce a unique set of additional revenue that you would otherwise not have.
Our total truck package includes our driver credentials, lift gate, freight handling equipment, reefer, team operation and more (including a willingness to go where many drivers are not). Some loads are dry only. Others need a lift gate. Some are reefer loads requiring a lift gate and HAZMAT credentials, etc.
I have tried to quantify the truck revenue that is attributable to the reefer but have been unable to do so. Sure, each reefer load pays more than a comperable dry load but there is much more to it than that. The reefer gets us relocated better than a dry box will. How do you quantify that? Reefer costs are higher, but we are getting high paying reefer loads now when we might otherwise sit. How do you quantify that?
Because a reefer is part of a reefer/truck/driver package, I don't know of an easy way to compare a dry truck to a reefer regarding net results and profitability. I do know that running our reefer truck has been a successful and profitable (net after all expenses and taxes) endeavor, with our carrier of choice.