Generac 3,300-Watt Gas Powered Portable Inverter vs GENMAX Portable Generator,1200W Ultra-Quiet Gas
Updated July 2026 — Generac 3,300-Watt Gas Powered Portable Inverter wins on power, GENMAX Portable Generator,1200W Ultra-Quiet Gas wins on portability and weight.
The Generac 3 offers superior power and advanced features, while the GENMAX excels in portability and price. Choose based on your specific needs.
Why Generac 3,300-Watt Gas Powered Portable Inverter is better
Higher Power
Generac 3 provides 3,300 starting watts compared to GENMAX's 1,200.
Advanced Features
Generac includes PowerRush Technology for better performance.
Versatility
Generac is suitable for RV use and powering multiple appliances.
Why GENMAX Portable Generator,1200W Ultra-Quiet Gas is better
Lower Price
GENMAX is priced at $279.99, significantly cheaper than Generac.
Lightweight
GENMAX weighs only 25.3 pounds, making it easier to transport.
Quiet Operation
GENMAX operates at a low noise level of 58 dBA.
Overall score
Specifications
| Spec | Generac 3,300-Watt Gas Powered Portable Inverter | GENMAX Portable Generator,1200W Ultra-Quiet Gas |
|---|---|---|
| Starting Watts | 3300 | 1200 |
| Running Watts | 3000 | 1000 |
| Noise Level | N/A | 58 dBA |
| Weight | N/A | 25.3 lbs |
| Warranty | N/A | 3 years |
Dimension comparison
Overview of Generac 3 and GENMAX Portable Generator
The Generac 3,300-Watt Gas Powered Portable Inverter Generator is priced at $849.00, while the GENMAX Portable Generator is significantly more affordable at $279.99, making it about 67% cheaper. Both generators cater to different needs, from home backup to outdoor activities, but they have distinct power outputs and features that set them apart.
Power and Performance
The Generac 3 offers 3,300 starting watts and is designed with advanced PowerRush Technology, providing over 50% more starting capacity than many other models. This makes it particularly adept at powering tools and appliances, making it suitable for diverse applications, including RV use and home backup. In contrast, the GENMAX Portable Generator provides 1,200 starting watts and is ideal for sensitive electronics, thanks to its inverter technology that produces clean power with less than 3% total harmonic distortion (THD). This lower power output may limit its versatility but makes it great for camping and light home use.
Portability and Weight
When it comes to portability, the GENMAX Portable Generator has a clear edge. Weighing only 25.3 pounds, it is one of the lightest 1,000-watt inverters available, making it extremely easy to carry for long distances or outdoor activities. The Generac 3, while still portable, is heavier and bulkier, which might be a consideration for those prioritizing weight in their choice.
Noise Levels
Noise output is another significant factor in choosing a generator. The GENMAX operates at a remarkably quiet 58 dBA at 25% load, making it an excellent choice for camping trips where quiet operation is essential. The Generac 3 is designed to be quiet as well, but specific dBA levels are not provided in the data. However, its focus on eco-mode indicates an intention to minimize noise, especially during low-load operations.
Fuel Efficiency
The GENMAX Portable Generator also shines in fuel efficiency, featuring an economy mode that maximizes fuel usage and runs for up to 6.5 hours at 50% load on a 0.66-gallon gas tank. This makes it a practical choice for extended outdoor use. The Generac 3 has an economy mode that adjusts engine speeds for fuel efficiency, but specific run times or gallon capacities are not disclosed. This makes it difficult to directly compare, but the GENMAX’s stated performance gives it a clear advantage in this category.
Safety Features
Safety is paramount when dealing with generators. The GENMAX comes equipped with a CO Detect shutdown sensor designed to prevent carbon monoxide poisoning, providing an additional layer of safety during operation. The Generac 3 includes features like LED indicators for low oil and overload, but it lacks specific carbon monoxide safety technologies. While both generators have safety features, the GENMAX's CO detection stands out for safety-conscious users.
Warranty and Support
The GENMAX Portable Generator has a 3-year warranty, which is coupled with free lifetime technical support from experts. This offers peace of mind for buyers concerned about long-term reliability and support. In contrast, the warranty information for the Generac 3 is not specified, which could be a consideration for potential buyers looking for assurance on their investment.
Price Comparison
The price difference between these two generators is significant. The Generac 3 is priced at $849.00, while the GENMAX is available for $279.99. This makes the GENMAX about 67% less expensive than the Generac 3, which may be a decisive factor for budget-conscious consumers. While the Generac provides more power and advanced features, the price point of the GENMAX may appeal to those who require less power for basic needs.
Which should you buy?
Choosing between the Generac 3 and the GENMAX Portable Generator ultimately depends on your specific needs. If you require a powerful generator for extensive applications like RV use or powering multiple appliances, the Generac 3 is a robust option despite its higher price. However, if portability, quiet operation, fuel efficiency, and budget are your top priorities, the GENMAX Portable Generator offers excellent value for money at a fraction of the cost.

