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Advanced

Generat​or Service

ONAN RV Generator Repair

626-334-9299

Azusa, California 

Open to assist during COVID 19

Repairs - Service - New - Warranty 






Generator Repair Made Easy

Browse Through Our Gallery

Repairing commercial and RV generators has never been this easy with Advanced Generator Service in Azusa, California. Rely on our team to fix your power source more efficiently so you can get back on the road and make the most out of your trip. 


Take a peek at our gallery below to see what awaits you when you hire us.



Client Reviews

Whether you need to buy or repair an RV generator, we have you covered. We’re proud to be hands-on on every project we take. Read some testimonials from our satisfied clients below.



Gary is the BEST, He always fits me in when I call. He is very considerate about knowing how important it is that my generator gets fixed in a timely manner.

Cecelia Keltz


What our customers are saying

5.0 star rating 7/3/2019

After running well for a couple of years, about a week ago, my generator stopped starting. When the usual troubleshooting failed, I guessed that it might be a bad fuel pump. A bit of research led me to Advanced Generator Service, a Cummins Onan repair service in Azusa California advancedgeneratorservice…. Watching Gary Patton, the owner, chief cook and bottle washer, made me very happy I'd decided against tackling this on myself. He however had the parts, dropped and repaired the generator and had me back on the road no time.

So, if you're in need in anywhere in Southern California Gary gets my highest recommendation.

Richard B 

Los Angeles

What our customers are saying


5.0 star rating 7/18/2019

Great Service provided by Gary & Laura ! We drove from LAX to Azusa to have our Onan Generator worked on. They have a good spot close to the fwy exit & plenty of parking & room to move around. We had some useful information explained to us by Gary that will help us in the future. They were upfront about pricing & we felt very comfortable with the atmosphere & professional service they provided. Thanks Again Gary & Laura

Jackie M

What our customers are saying