Model EF2200iSThe Yamaha EF2200iS is a portable inverter generator that offers a balance between power and portability, making it ideal for campers, caravanners, adventurers, and outdoor enthusiasts.
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Here's the quick tradeoff view — what this model does well, and where it may not fit.
The Yamaha EF2200iS is a gasoline generator rated for 1,800 running watts with 2,200 starting watts. That combination gives it a clear split between steady output for ongoing loads and extra headroom for brief startup surges.
Because it runs on gasoline, the EF2200iS fits users who want a familiar fuel choice while still getting a compact inverter-style generator design.
With 1,800 running watts and 2,200 starting watts, the EF2200iS is built to handle continuous demand while also accommodating momentary spikes when equipment first kicks on. Its 57 dBA noise level supports use in settings where keeping sound down matters, and the inverter output is backed by a 2.5% THD figure, which speaks directly to cleaner power delivery for electronics that benefit from tighter waveform control.
Runtime is listed at 10.5 hours at 25% load, tying endurance to lighter draw scenarios where you are stretching fuel over longer periods. The generator carries a 1.24 gallon fuel tank, which pairs with that 25% load runtime to frame how long you can stay powered before refueling.
At 55.2 lbs, the EF2200iS stays within a weight range that can be moved between storage and the point of use without treating it like a fixed installation. Its dimensions of 21.9 x 11.8 x 18.5 inches help clarify how it will fit in a vehicle, in a garage corner, or alongside other gear when space is limited.
Starting is handled by a recoil system, keeping operation straightforward and fully manual. Practical monitoring is supported by a fuel gauge and indicators, so you can track basic status and fuel at a glance while it is running.
For use cases that demand regulatory alignment, the EF2200iS lists CARB and EPA compliance. It is also parallel capable, which opens the door to scaling output by linking it with another compatible unit, and it is RV ready for plug-and-play convenience in RV power setups. A spark arrestor is included for added safety considerations in outdoor environments, and AVR is built in to support stable voltage regulation. Yamaha backs the unit with a 3-year warranty.
Needs 240V output
Needs 240V output
Needs 240V output
Needs 240V output
Exceeds capacity
Est. running: 1,000W
Peak surge (single motor): 1,200W
Avoid starting multiple motor loads at the same time.
Est. running: 1,300W
Peak surge (single motor): 1,200W
Avoid starting multiple motor loads at the same time.
Est. running: 200W
These are estimates using typical wattage assumptions. Real appliances vary. Startup surges can be 2–6× the running wattage for motor-driven loads. 240V loads require a 120/240V generator and proper connection. Use a transfer switch or interlock kit; never backfeed a panel.
Yamaha is a respected leader in the generator industry, recognized for their innovation, quality, and reliability in portable and backup power solutions.
| Fuel | Running | Starting | Runtime @50% | Runtime @25% |
|---|---|---|---|---|
| Gasoline | 1800W | 2200W | Not available | 10.5h |
| Running Watts | 1,800 watts |
|---|---|
| Starting Watts | 2,200 watts |
| Starting Watts (Gasoline) | 2,200 W |
| Running Watts (Gasoline) | 1,800 W |
| Engine | 79 cc Yamaha MZ80 OHV 4-stroke |
|---|---|
| Engine Type | OHV 4-stroke |
| Engine Displacement | 79 cc |
| Spark Arrestor | Yes |
| Emissions Compliance | CARB, EPA |
| Voltage (AC) | 120 |
|---|---|
| Voltage (DC) | 12 |
| Running Amps | 15 A |
| Peak Amps | 18.3 A |
| AC Frequency | 60 hz |
| Current | 15 amps |
| GFCI Outlets | No |
| DC Outlets | 1x 12V 3A (cigarette lighter style) |
| AC Outlets | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| Total Harmonic Distortion (THD) | 2.5 % |
| Dimensions | 21.9 x 11.8 x 18.5 inches |
|---|---|
| Weight | 55.2 lbs |
| Automatic Low Oil Shutdown | Yes |
|---|---|
| Emissions Compliance | CARB, EPA |
| Automatic Voltage Regulation | Yes |
| Automatic Voltage Regulator | Yes |
| Carbon Monoxide Sensor | Yes |
| Commercial Warranty | 3 years |
| Covered Outlets | No |
| Electric Start | No |
| Fuel Gauge | Yes |
| Fuel Tank Capacity | 1.24 gallons |
| Included Accessories | No accessories |
| Indicators | Yes |
| Inverter | Yes |
| Noise Level | 57 dBA |
| Overload Protection | Low oil and overload protection |
| Parallel Capable | Yes |
| Recoil Start | Yes |
| RV Ready | Yes |
| Starter Type | Recoil |
| Starting System | Recoil |
| UPC | 810,856,030,317 |
| Warranty | 3 years |
| Fuel Type | Gasoline |
|---|
| Runtime @ 25% | 10.5 hours |
|---|---|
| Runtime @ 25% Load (Gasoline) | 10.5 hours |
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