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YAMAHA · YAMAHA EF2200IS — 2,200W SUPER-QUIET INVERTER GENERATOR (BLUE)
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Yamaha

Yamaha EF2200iS — 2,200W Super-Quiet Inverter Generator (Blue)

Yamaha's answer to the Honda EU2200i — a 2,200W (1,800W running) portable inverter generator with the legendary Yamaha Quiet Technology muffler. 79cc 4-stroke engine, 1.24-gallon tank, up to 10 hours of runtime per fill (longer than the Honda EU2200i thanks to Smart Throttle eco mode). Pure-sine output (under 3% THD) is clean enough for any sensitive electronics — CPAP, computers, modern fridges. Includes a standard RV TT-30 outlet, illuminated multi-function LED display, and 3-year manufacturer warranty. 55.2 lb chassis with tri-handle design for two-person carry.

4.3 (178) 4.3 out of 5 (178 reviews)
1,800
W AC
55.2
lb
10
h
  • 2,200 W starting / 1,800 W running, 120 V single-phase
  • Yamaha 79cc 4-stroke OHV engine — small displacement, long runtime
  • 1.24-gallon tank, up to 10 hours of runtime in Smart Throttle eco mode
  • Smart Throttle automatic load sensing — engine RPM adjusts to demand
  • Smart Dial knob start with magneto ignition (pull-rope, no electric start)
  • Standard RV TT-30 outlet onboard — no adapter dongle needed
  • Illuminated multi-function LED display: voltage, frequency, runtime, fuel
  • Pure sine wave inverter (<3% THD) — safe for laptops, CPAPs, modern electronics
  • 55.2 lb with tri-handle design; two-person lift for ease
  • 3-year manufacturer warranty

The good and the bad

✓ Pros
  • $849 vs Honda EU2200i's $1,199 — saves ~$350 for very similar specs and similar real-world quietness
  • 10-hour runtime per fill beats the Honda EU2200i's 8 hours by 25% — longer hauls between refuels
  • Smart Throttle eco mode is fully automatic — no manual eco/full toggling, the unit reads load
  • TT-30 RV outlet onboard means RV owners plug straight into the camper without a Y-adapter
  • Yamaha's silencer is a long-standing reference in the segment — among the quietest published
✕ Cons
  • 178 verified reviews vs Honda EU2200i's 1,056 — much smaller pool to validate long-term reliability
  • 4.3★ rating is solid but trails Honda's 4.7★ — fewer rave reviews, more mixed feedback on starting after long storage
  • 55.2 lb is 4 lb heavier than the Honda EU2200i for the same wattage class
  • Pull-start only with no CO sensor (Honda EU2200i adds CO-Minder auto-shutoff, Yamaha doesn't)
  • No publicly listed parallel kit on Amazon US — Yamaha sells one but it's harder to source than Honda's
Who this is for

If this is you, you're in the right place

  • Quiet + long runtime camper

    Yamaha Quiet Technology muffler matches Honda's hush, and the 1.24-gal tank stretches to ~10 hours — longer between refuels than the EU2200i.

  • Honda alternative shopper

    Same 2,200 W class, similar reliability reputation, often a bit cheaper. Smart Throttle drops RPM at light load for fuel and noise savings.

Who should skip this

If this is you, keep shopping

  • Need more than 2,200 W

    1,800 W continuous tops out at fridge-plus-essentials. Big A/C or tools need a 3,500 W+ unit.

  • Rock-bottom price hunters

    It's premium-tier like Honda. The Wen or Champion give more watts per dollar if quiet isn't critical.

Real-world runtime

How long it lasts on real loads

Estimates apply 85% inverter efficiency to the rated capacity. Real-world numbers vary with temperature, battery age, and appliance duty cycle.

Load Watts Hours Note
Fridge + lights + phones 600W 9 h longer runtime than the Honda
CPAP overnight 40W 10 h
Small RV loads 800W 7 h

Full specs

Output

AC continuous 1,800W
AC surge 2,200W

Physical

Weight 55.2lb

Fuel

Fuel type Gasoline
Runtime 10h
Verdict

Yamaha Yamaha EF2200iS — 2,200W Super-Quiet Inverter Generator (Blue) — the verdict

Yamaha's answer to the Honda EU2200i — a 2,200W (1,800W running) portable inverter generator with the legendary Yamaha Quiet Technology muffler. 79cc 4-stroke engine, 1.24-gallon tank, up to 10 hours of runtime per fill (longer than the Honda EU2200i thanks to Smart Throttle eco mode). Pure-sine output (under 3% THD) is clean enough for any sensitive electronics — CPAP, computers, modern fridges. Includes a standard RV TT-30 outlet, illuminated multi-function LED display, and 3-year manufacturer warranty. 55.2 lb chassis with tri-handle design for two-person carry.

Check on Amazon
Versus the competition

Where it wins and loses against the alternatives

FAQ

How long does the Yamaha EF2200iS — 2,200W Super-Quiet Inverter Generator (Blue) run a typical refrigerator?
A modern A++ fridge averages ~150 W. With ? Wh of usable battery, that's roughly ? hours of continuous runtime before it depletes.
Is the Yamaha Yamaha EF2200iS — 2,200W Super-Quiet Inverter Generator (Blue) worth it versus competitors?
Yamaha competes directly with EcoFlow, Bluetti and Anker in this segment. The Lab Score of — suggests an acceptable unit at this price point. Cross-shop on /compare with your second pick.
Is it LFP or NMC?
The Yamaha EF2200iS — 2,200W Super-Quiet Inverter Generator (Blue) uses unspecified cells.

Compared to alternatives