Honda EU3000iS published runtime
Honda publishes two runtimes for the EU3000iS (model code EU3000IS1AN), both on a full 3.4-gallon tank: 19.6 hours at 1/4 load and 6.9 hours at rated load. Its larger tank is why it runs far longer at light loads than smaller Honda inverters.
Verified specifications
- Manufacturer
- Honda
- Model
- EU3000iS
- Model codes
- EU3000IS1AN
- Generator type
- Inverter
- Gasoline: running
- 2,800 watts
- Gasoline: starting / max
- 3,000 watts
- Gasoline: tank
- 3.4 gallons
- Gasoline: published runtime
- 19.6 hours at 25% load on 3.4 gallons
- Gasoline: published runtime
- 6.9 hours at rated load on 3.4 gallons
- Voltage
- 120V
- Dry weight
- 130.7 lb
- Noise
- 50 dB(A) at 1/4 load · 57 dB(A) at rated load
- Starting system
- Electric, with recoil backup
- CO safety
- CO-MINDER
Source: Honda Power Equipment — View Honda Specifications ↗
Specifications verified: September 28, 2026
How much gas does the Honda EU3000iS use?
- At 1/4 load: 3.4 gal ÷ 19.6 h ≈ 0.17 gallons per hour
- At rated load: 3.4 gal ÷ 6.9 h ≈ 0.49 gallons per hour
These gallons-per-hour figures are our calculations from Honda's published tank size and runtimes; Honda does not publish them directly.
Will a Honda EU3000iS run overnight?
At light loads, Honda's 19.6-hour figure covers a typical night. Near its rated output, the tank lasts about 6.9 hours. Enter your actual appliances in the calculator to see where your load falls.
Manufacturer figures vs. our estimates
Only the runtimes listed above are Honda's own published figures. When your load and fuel amount exactly match one of them, the calculator labels the result Manufacturer Published Runtime. Loads between published figures are labeled Estimated from Manufacturer Data, and loads outside the published range are labeled Extrapolated with a wider range. Those are GeneratorRuntime estimates, not Honda specifications.
Operate it safely
Like every portable generator, the Honda EU3000iS must be operated according to the manufacturer's safety instructions: outdoors only, well away from doors, windows, and vents, with battery CO alarms inside your home. A CO shutoff feature is not a substitute for safe placement. Never refuel while the engine is running or hot.
Honda EU3000iS FAQ
›How long will a Honda EU3000iS run on a full tank?
Honda publishes 19.6 hours at 1/4 load and 6.9 hours at rated load on its 3.4-gallon tank. Loads in between fall between those figures; use the calculator for your own load.
›What is the Honda EU3000iS runtime at 50% load?
Honda does not publish a 50% load runtime. The calculator estimates it from Honda's 1/4-load and rated-load figures and labels the result "Estimated from Manufacturer Data".
›How much gas does a Honda EU3000iS hold?
3.4 gallons of gasoline, according to Honda's published specifications.
›How many watts does the Honda EU3000iS produce?
Honda lists 2,800 watts rated output and 3,000 watts maximum output at 120V.
›What is the difference between the EU3000iS and the EU3200i?
They are separate models with different specifications. The EU3000iS has a 3.4-gallon tank and electric start; the EU3200i has a 1.2-gallon tank and is much lighter. Each has its own runtime guide on this site.
Similar generators
- WEN DF360iX — 2,900 watts running
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- Predator 3500 Super Quiet Inverter (71358) — 3,000 watts running
- Honda EU2200i — 1,800 watts running
- Honda EU1000i — 900 watts running
- Honda EU7000iS — 5,500 watts running
Browse the full Generator Runtime Database or use the main Generator Runtime Calculator.