Can the Cummins Onan QD 7500 Diesel Generator Handle 2 AC Units Running at the Same Time?
Updated 10/20/2026 | Published 10/14/2026
Question:
Can the Cummins Onan QD 7500 Diesel Generator handle two AC units running at the same time?
asked by: Jimmie
Expert Reply:
It sure can Jimmie and welcome back. The Cummins Onan QD 7500 Diesel Generator item # CM529ZR can indeed run two AC units at the same time. This is a 7,500 watts that provides up to 62.5 amps. Two AC units draw 1,500 running watts or around 12 to 15 amps each so you'd be plenty capable of using the Cummins Onan QD 7500 item # CM529ZR to power two AC units.
The Cummins Onan QD 7500 item # CM529ZR is a commercial grade, single phase inverter generator, that delivers 7,500 watts of pure sine wave power at 120 volts. This allows you to safely power sensitive electronics and appliances. It also provides a constant 10 Amp DC current to maintain and charge the 12V starting battery.
The Cummins Onan QD 7500 item # CM529ZR measures 36.4" long x 24.2" wide x 22.3" tall, weighs 420 lbs, and has a Kubota 722 4-cycle, liquid cooled diesel engine.
What kind of RV do you have and what model AC units are on it? Feel free to answer this and throw in any other questions you have, where it says Add Comment.
(click to enlarge)
Jimmie
10/20/2026
I have two Chill Cube units on a Fleetwood class A.
Jerred H.
10/20/2026
Product Page this Question was Asked From
Cummins Onan QD 7500 Diesel Generator - 7.5 kW - 120V
- Generators
- Inverter
- Diesel
- 4001 Watts or More
- Onboard Generator
- 120V Output
- Electric Start
- Cummins Onan
more information >
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Jimmie
10/20/2026
Thank you so much that's just what I needed to know.