Generac vs Onan generator

I have had a lot of trouble getting parts for my generac 5.5
Now I have low oil pressure and the engine needs tearing down to investigate. It will cost me about $2k extra, but I'm just going to replace my unit with an Onan. So, mu opinion, when you have a choice, don't get a Generac RV gen set.

I would be a little leary of the Generac Impact 3600- nice idea, but they seem to have quite a few inverter related problems.

I have a Generac 5500 in my 03 mh. PO worked for FEMA and ran it 24/7 for thirty days while in New Orleans after Katrina. I currently have about 1500 hours on it and the only problem I had was a dry rotted fuel line. It's quiet and reliable. I do regular maintenance on it.

Generac generators for RVs are not made anymore. So, you have a choice between Onan, Powertech (if a diesel), paying the big bucks for Kohler, or getting a portable genset.

My 2001 5500 Generac is a Kohler engine,...maybe all are. The engine is just as good and service is just as available (maybe more so) as Onan. But........given a choice, I'd take the Onan. While Onan is a noisy pos, the Generac is worse. But that's after using my eu1000 almost exclusively for years,...(solar mixed in).big one for Micro only.

Mine (2001) came with a 5.5 GENERAC. Only one major problem,a crankshaft oil seal blew out...oil all over the place. Had a shop remove, rebuild and reinstall. Around 2300 bucks. HOWEVER....during Sandy, I started it up and with an extension cord nightmare, the genny provided lights and TV and the fridge for 4 straight days. It RAN for 4 straight days! (The motorhomes' 75 gallon gas tank..recently filled, helped out too!)
Reading here on the Forum, either GENERAC or ONAN...both are good, both have problems. And...btw, parts for GENERAC are available. Dealers seem really far and few between, so any major work...find a good shop.

Generac and Onan are equally large companies, and both make wonderful products.

I have a buddy who has a Generac, and it works great! I have an Onan, and it worked great for the first 15 years that I had the RV. . .

Good luck,

Fred.