When you need a reliable power source for camping, outdoor activities, or as a backup during power outages, a portable generator can be a lifesaver. But choosing one isn’t always simple, taking into account factors like size, noise level and budget. Today we’re comparing two popular models from Yamaha – the EF2200iS and the EF2400iS. According to the brand, the EF2200iS offers an extra 200 watts of power while being lighter and smaller than the EF2400iS. On the other hand, the EF2400iS is praised for its quiet operation, light frame and greater power output.
Performance & Power
Running Power (W): Yamaha EF2200iS (2200 W) vs Yamaha EF2400iS (2400 W): Running power refers to how much continuous power a generator provides. Yamaha’s EF2200iS is capable of powering a large air conditioning unit or an air compressor with its 2200W output, while the EF2400iS delivers slightly more at 2400W.
Starting Power (W): Yamaha EF2200iS (2300 W) vs Yamaha EF2400iS (4000 W): Starting power is crucial for devices requiring a burst of energy on startup. The Yamaha EF2400iS significantly outperforms its counterpart in this regard.
Engine type: Both generators are equipped with durable OHV engines – that’s Overhead Valve technology known for better fuel efficiency and longer engine life spans – but differ in size: the Yamaha’s EF2200iS operates on a smaller 79 cc engine whilst the EF24000IS runs on a larger 171 cc engine.
Rated Output (kVA): Yamaha EF2200iS (1.8 kVA) vs Yamaha EF2400iS (2 kVA): Rated output relates to the generator’s apparent power, a combination of real and reactive power essential for certain equipment. The larger EF2400iS offers a higher rated output.
Inverter technology is present in both models; providing cleaner power helpful for sensitive electronics, along with quieter operation and better fuel efficiency.
Fuel & Run Time
Both generators use petrol for fuel, but their tank capacities vary: the Yamaha EF2200iS has a smaller 4.7-litre tank compared to the 6-litre tank of the Yamaha EF2400iS. This impacts run times; the Yamaha EF2200iS providing a longer run at 10.5 hours compared to the 9 hours offered by the EF2400iS at 1/4 load.
In terms of weight, the Yamaha EF2200iS (25 kg) is lighter than the Yamaha EF2400iS (32 kg). The less hefty generator may be easier to transport, but both lack wheels making continuous repositioning a challenge. Despite this, their compact dimensions -55.5cm x 30cm x47cm for the EF2200iS and 52.7cm x 41.9cm x45.9cm for the EF2400iS- won’t require excessive storage space.
Outlets & Parallel Use
Each generator possesses two AC outlets to allow simultaneous powering of multiple devices requiring alternating current. Both have single DC outlets with different amperage; the Yamaha EF2200iS offers 12V/3A while the Yamaha EF2400iS delivers a stronger 12V/8A output.
Moreover, you’ll be pleased to hear that parallel use is permitted in both options as well, meaning you can connect two equal models for double power!
Features & Usability
Common features for both generators include recoil starter systems, fuel gauges, oil alert mechanisms, brushless alternators and spark arrestors. These details enhance usability and provide essential information about the generators’ performance.
Noise can be a significant determining factor for some buyers. The Yamaha EF2200iS creates a noise level of 57 decibels – slightly above a refrigerator’s hum but quieter than a conversation. Still, the Yamaha EF2400iS reigns supreme with an impressively lower 54-decibel output.
Yamaha EF2200iS vs Yamaha EF2400iS Comparison Table
|79 cc, OHV, 4-stroke
|171 cc, OHV, 4-stroke
|Max / Starting watts
|12V / 3A
|12V / 8A
|AC Frequency (Hz)
|Rated Output (kVA)
|Fuel Tank Capacity
|Run time (Hours)
|10.5 at 1/4 load
|9 at 1/4 load
|Dry Weight (Kg)
|Size (L x W x H)
|55.5 x 30 x 47 cm
|52.7 x 41.9 x 45.9 cm
|Number of AC Outlets
|Noise Level (dBA)
In conclusion, when deciding between the Yamaha EF2200iS and the EF2400iS, it truly comes down to individual needs and priorities. Those needing greater starting power might opt for the EF2400iS. Conversely, those seeking longevity of use may favour the longer run time of EF2200iS.