Can Onan Cummins 6000w Or 8000w Onboard Generator Handle 2 AC Units And AquaHot Water Heater?
Updated 08/15/2025 | Published 07/16/2025
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Question:
We have a 2020 Forest River Berkshire xlt. Our RV has a Samsung fridge, Aqua-Hot system, 2 AC units, and a 4-battery bank. Can the QD 6000 run all this while recharging?
asked by: Daryl A
Expert Reply:
Daryl and Jess, you’re pushing the upper limit. If both ACs are cycling and the Aqua-Hot’s electric heating element is engaged, the QD 6000w generator from Cummins/Onan # CM94RR will be working hard but it should be able to keep up.
It’s better to stagger usage of high amperage electronics, or upgrade to the Onan QD 8000w # CM44RR to give yourself more overhead. That said, if you manage your loads carefully, the 6000W model will run a residential fridge, 1 AC unit, and charge your batteries via a converter or inverter-charger without issue.
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Onan Generator - Quiet Series Onboard RV Generator - 6,000 Watts - Diesel
- Generators
- No Inverter
- Diesel
- 4001 Watts or More
- Onboard Generator
- 12V Output
- Carbureted
- Electric Start
- Cummins Onan
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Andrew N.
8/15/2025
Hey Daryl and Jess, did you find a good balance with your current generator setup, or are you considering the upgrade to the 8000W model? I'm curious because your experience could really help others in a similar situation!