A-iPower GXS11300RT vs Generac #8063 GP9500ETF

Comparison Overview

Analysis by AJ Quick

Mechanical engineer and founder of RightGenerator

Key takeaways

• Generac #8063 GP9500ETF delivers 9500 running watts and 12500 starting watts.
• A-iPower GXS11300RT delivers 9000 running watts and 11300 starting watts.
• A-iPower GXS11300RT runs up to 18 hours at 25% load.
• Generac #8063 GP9500ETF runs 14 hours at 25% load, 9.5 hours at 50%.
• Both are tri-fuel, non-inverter, open-frame generators with 3-year warranties.
• Weights are similar: A-iPower 224.9 lb, Generac 219 lb.

Best use cases

Choose the A-iPower GXS11300RT if you want a tri-fuel generator that prioritizes longer stretches between refueling. Its 18-hour runtime at 25% load is a practical advantage for overnight home backup, especially if your typical load is moderate (refrigerator, lights, internet gear, and occasional microwave use). It is also a good fit if you value having a stated noise figure up front (listed at 78 dB), even though it is still an open-frame, non-inverter generator and will not be “quiet” like an inverter model. The tradeoff is slightly lower capacity at 9000 running watts and 11300 starting watts, so you may need to be more careful about stacking big startup loads.

Choose the Generac #8063 GP9500ETF if your plan involves heavier simultaneous loads or tougher motor starts. With 9500 running watts and 12500 starting watts, it gives you more breathing room for things like a well pump kicking on while other appliances are running, or powering more tools on a job site. It also provides more complete runtime info at higher load, rated 9.5 hours at 50% load, which is helpful if you expect to run closer to half capacity for extended periods. The tradeoffs are a shorter 14-hour runtime at 25% load and no noise number provided here, so you may need to rely on user reports or assume typical open-frame loudness.

For RV and camping, both are generally less ideal because they are non-inverter and open-frame, meaning more noise and less “clean” power than inverter options, but they can work for occasional, high-demand situations where tri-fuel flexibility is the priority.

Verdict & recommendation

If your priority is maximum capacity and easier starts for larger loads, the Generac #8063 GP9500ETF is the better fit on paper with 9500 running watts and 12500 starting watts, plus a clear 9.5-hour runtime at 50% load for heavier-use planning. If your priority is stretching fuel longer during lighter, steady backup use, the A-iPower GXS11300RT stands out with 18 hours at 25% load, which can mean fewer refueling interruptions overnight.

Both are tri-fuel, open-frame, non-inverter generators with a 3-year warranty, so the decision mostly comes down to whether you value longer low-load runtime (A-iPower) or a higher wattage ceiling and stronger surge headroom (Generac).