I have an 84" Bentz and the Rigmaster was installed by Espar of Mich. If you're pleased with the performance of the A/C in Phoenix/Laredo type heat, you're the first I've heard of. I've just had too many expensive repairs with it. While the Onan setup may cost more up front, it's the total cost of ownership that counts.........and I won't put one on my next truck.
Zorry is also the first I have heard singing the praises of Rigmaster. You hit the nail right on the head Highway with what I bolded in the above quote. We currently have an Onan 7.5 with 7,600 hrs, the ONLY repairs in all that time have totaled under $300 in parts (I performed the repair so no labor cost). Temp sending unit, thermostat and a starter. Making the repair cost/hr .03, if you figure in routine maint @ $ .33 /hr that is only $.36 /hr . The .33/hr is figured at 150 hr oil change interval @ $50 avg cost and would be lower if one decided to stretch the service interval once the warranty is up.
My Rigmaster 3 years /3300 hours. I1major repair. Changed out the cheap chineese a/c comp that is no longer used. 2 times had a loose wire on a switch. That's it.
What was the cost of those repairs? The hrs on your unit seem low per year, by my math you only run your APU 3hrs a day. Why is that? Down time, having to idle because it won't keep up with your needs?
Had a friend put 16,000 hours on one and replaced it with another Rigmaster.
They are loud. The new owner improved the exhaust. Do not know if they are still as loud.
Loud is ok in a truckstop. Masks other noises. If your by the lake then buy an onan. Just hope it works more than 50% of the time like Dbluzman's.(that must be dealer issues I would think.)
Maybe we had better luck than other's by having chosen one of Rigmaster's better dealer's.
The bluzman's troubles are some of the very few complaints I have ever heard about an Onan. He himself admitted to being unfamilliar with the system he now has and that it may well be something simple, ie. a setting or a reset of some kind. We have yet to hear from him what the remedy was. Was it operator error due to being unfamilliar with the new system or something more involved? Only he can tell us. All machines have the potential to come through with little gremlins like loose wires (like you had on yours) or defective parts of one kind or another that will cause headaches. New parts can be defective right out of the box.
As someone that has had all the major brands, Tripack (TK), Proheat (now Carrier), Rigmaster and Onan, here is the order I would put them in.
Onan gets top billing as the most reliable. While we now have the 7.5 we have also had the 5k Onan and both were trouble free. I beleive the 5k is still out here on the road and it was an '06. Just recently with our current set up it was 97 out with the t-stat set at 63 and our A/C was cycling (100" sleeper).
Tripack comes in 2nd. It was on an 84" sleeper and had no trouble keeping it comfy inside while it was in the high 90's outside. The unit was trouble free, while we had it the only repair was a water pump and belt.
Proheat gets third. With this unit there were multiple updates that needed to be done to get it to do what it was intended to do. Even after all the updates/repairs it was mediocre at best. Quirky right out of the gate.
Rigmaster= boat anchor. Constantly had to fiddle with this or that to keep it running. Parts were hard to find and service locations were far and few between. To be fair I will add that when we had the Rigmaster APU's were "new" and nowhere near as common as today. They were concidered a luxury back then, there were no idle laws in place that now make it all but the necessity that APU's are today.