Generac · Inverter generator · GP3300i COsense 49ST/CSA
GP3300i COsense 49ST/CSA delivers up to 2,500 running watts and 3,300 starting watts from a portable gasoline system.
Infographic gallery
2,500W rated output
The comparison uses Generac’s published rated and peak, surge, or maximum output figures.
Energy source
Gasoline
Published runtime guidance
4.5 hours at 50% load on the primary listed fuel
61 lb
Listed weight
22.3 × 13.4 × 18.4 in
Dimensions
Charging or integration
Fueling and starting per Generac instructions; manual transfer equipment sold separately
Backup transfer
Not an automatic standby system; approved manual transfer equipment is required for home connection
Noise
Enclosed inverter design; no official dBA figure listed on the model page
Official product gallery
The current official image set for GP3300i COsense 49ST/CSA includes product views, connection diagrams, feature explanations, and compatible system configurations where Generac publishes them.
Complete specifications
These pages retain Generac's model-specific output, charging, battery, port, continuity, dimensions, environmental, engine, fuel, app-control, and warranty fields where published.
System capability
GP3300i COsense 49ST/CSA delivers up to 2,500 running watts and 3,300 starting watts from a portable gasoline system.
Power delivery
GP3300I 3300 watt Portable Inverter Generator With COSENSE® Technology .
Safety and controls
The Generac GP3300i inverter featuring advanced PowerRush™ technology delivers over 50 percent more starting capacity for your RV essentials and other motor-driven equipment—so you can do more with less.* The GP3300i features duplex outlets, a 30A twistlock outlet and USB ports for easy connection and quiet inverter power, perfect for outdoor activities in a compact and lightweight solution.
Runtime and fueling
PowerRush™ Advanced Technology delivers over 50% more starting capacity allowing you to do more with less*.
Portability detail
TruePower TM Technology provides clean, stable power ideal for sensitive electronics, tools and appliances .
Connection options
Powerful protection against hazardous carbon monoxide.
Ownership note
Easy to Carry compact & lightweight design with built-in handle makes transportation easy.
Additional manufacturer note
Quiet Inverter Power reduces sound emissions and provides optimal performance.
Best-fit uses
Standout features
Use the independent calculator before choosing a battery system or generator.
Find My Generator score
Best for specific needs
Compared with 89 compact inverter generators in the current catalog.
Running and peak output versus the class
Longest published runtime figure
Lower weight scores higher
Single-fuel operation
Output or stored energy per listed dollar
Class comparison
A number is more useful with context. Each row shows this model beside its class median and translates the difference into a percentile.
Running output
Higher than 99% of its class
Peak output
Higher than 99% of its class
Published runtime
Longer than 4% of its class
Product weight
Lighter than 1% of its class
How the score works: Scores use published specs and are relative to comparable products in this catalog. Missing specs are excluded and remaining weights are normalized. Runtime is the longest manufacturer-published figure and may use a different load or fuel than another model.
Ownership resources
Start with the exact Generac GP3300i COsense 49ST/CSA model or item number. Accessory families can look alike while using different connectors, electrical limits, engines, or mounting points.
Compatible accessories
Use a correctly rated cord or professionally selected inlet connection for the intended load.
This model’s published information references parallel operation. Use the manufacturer’s matching kit and pairing rules.
Model-matched filters, spark plugs, batteries, oil supplies, and service parts support scheduled maintenance.
A fitted storage cover protects a cooled, stored generator. A running shelter must be designed for generator operation.
Compatibility note: Links lead to manufacturer or official retailer resources. Confirm the full model or item number, connector type, voltage, amperage, and published compatibility list before buying. Installation involving a home panel, inlet, transfer switch, or fuel plumbing should be handled as required by local code.