I have this Chicago Elrctric PTO generator. I bought it off of Ebay for $800 with 2.5 hours on the clock. The generator is compact and well built. I use a Kubota L4240 with 35HP at the PTO to run it. Just set the RPM's till the voltage gets to 240V and 60Hz and let it be. There is very little change in voltage when central AC kicks on and off. We have not had a long power outage since I got the unit so I have only used it a few hours for testing. The unit was underwater for a few days during a flood and it still works as it should. Let me know if you have any questions.