Generac · Inverter generator · iQ3500 COsense 50ST
iQ3500 COsense 50ST delivers up to 3,000 running watts and 3,500 starting watts from a portable gasoline system.
Infographic gallery
3,000W rated output
The comparison uses Generac’s published rated and peak, surge, or maximum output figures.
Energy source
Gasoline
Published runtime guidance
8.9 hours at 50% load on the primary listed fuel
109.1 lb
Listed weight
23.7 × 18 × 21.7 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 iQ3500 COsense 50ST 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
iQ3500 COsense 50ST delivers up to 3,000 running watts and 3,500 starting watts from a portable gasoline system.
Power delivery
The iQ3500 portable inverter generator lets you bring power wherever you go – from tailgating parties to camping trips, the jobsite and beyond.
Safety and controls
The durable, yet lightweight design is specifically engineered for easy portability.
Runtime and fueling
The intuitive PowerDial™ integrates the start, run and stop functions into one simple-to-use dial, along with Electric Start (battery included) capability, all conveniently located for quicker startup.
Portability detail
Select from two engine speeds, depending on your need, to significantly reduce noise and fuel consumption, or to maximize power response.
Connection options
Inverter generators utilize a different type of alternator than standard generators to generate AC power.
Ownership note
The end result is a portable generator with reduced weight and size and power that is ultra-clean and capable of safely powering sensitive electronics and tools.
Additional manufacturer note
Ultra-Quiet - Advanced inverter technology and enclosure design provide optimal quiet 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 172 mid output 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 10% of its class
Peak output
Higher than 8% of its class
Published runtime
Longer than 37% of its class
Product weight
Lighter than 25% 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 iQ3500 COsense 50ST 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.