Generac · Portable generator · GP3600 COsense 49ST/CSA
GP3600 COsense 49ST/CSA delivers up to 3,600 running watts and 4,500 starting watts from a portable gasoline system.
Infographic gallery
3,600W rated output
The comparison uses Generac’s published rated and peak, surge, or maximum output figures.
Energy source
Gasoline
Published runtime guidance
9.3 hours at 50% load on the primary listed fuel
105 lb
Listed weight
24 × 22.5 × 21.3 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
No official dBA figure listed on the model page
Official product gallery
The current official image set for GP3600 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
GP3600 COsense 49ST/CSA delivers up to 3,600 running watts and 4,500 starting watts from a portable gasoline system.
Power delivery
GP3600 3,600-watt Portable Generator With COSENSE® Technology .
Safety and controls
The 3600-watt Generac GP3600 portable generator can be used to tackle home projects, provide power for tools, or deliver essential electricity in the case of an outage.
Runtime and fueling
It is an especially affordable solution with premium features.
Portability detail
These include PowerRush™ Advanced Technology — delivering over 40% more starting capacity* —an OHV engine for longer engine life and a large-capacity steel fuel tank with an incorporated fuel gauge for durability.
Connection options
The hardened steel tube cradle provides added strength, while the low-oil level shutdown protects your engine from damage.
Ownership note
Heavy-duty, never-flat wheels and a foldable handle make for easy transportation of the generator.
Additional manufacturer note
The compact size of the GP3600 ensures it will take up minimal storage space in the garage.
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 130 mid output portable 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 27% of its class
Peak output
Higher than 24% of its class
Published runtime
Longer than 7% of its class
Product weight
Lighter than 86% 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 GP3600 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.