Honda EU10is vs Yamaha EF1000iS Inverter Generators: A Complete Comparison

Honda EU10is

Supports parallel use

Useful oil alert system

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Yamaha EF1000iS

Longer run time

Quieter operation

Larger fuel tank

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Portable generators are a helpful tool to have in many situations. They can keep your devices powered during a blackout, help you go camping off the grid, or support your tools at a remote work site. However, finding the right one can be a challenge. You need to consider the size, noise level, and price, among other things.

In this article, we’ll compare two popular models – the Honda EU10is and the Yamaha EF1000iS inverter generators – to help you decide which one might be the best fit for your needs. We’ll look at their performance and power, fuel efficiency and run time, physical specifications, outlet options and potential for parallel use, additional features, noise level and more.

Performance & Power

Running Power (W): Honda EU10is vs Yamaha EF1000iS
This is the amount of continuous power a generator can provide. It’s essential to ensure the total running watts of your devices don’t exceed this number. The Honda EU10is has running power of 900W and could power appliances like a small air conditioning unit or power hand drill. On the other hand, the Yamaha EF1000iS offers slightly more with 1000W which could cover devices like a kettle or belt sander.

Starting Power (W): Honda EU10is (1000W) vs Yamaha EF1000iS (1600W)
Some devices need a burst of power when they start. The Yamaha model outperforms in this case with a peak wattage of 1600W compared to 1000W from the Honda model.

Engine type: Both generators utilize an OHV or Overhead Valve engine which leads to better fuel efficiency, longer engine lifespan and improved power output.

Rated Output (kVA): Both generators have a rated output of 0.9 kVA, indicating similar apparent power.

Inverter: Both the Honda EU10is and the Yamaha EF1000iS feature inverter technology, meaning they can produce clean power that won’t harm delicate electronics.

Fuel & Run Time

Fuel Type: Both generators run on petrol which is commonly available.

Fuel Tank Capacity: The Yamaha EF1000iS has a slightly larger fuel tank with a capacity of 2.5L compared to 2.1L for the Honda EU10is. This could mean slightly less frequent refuels.

Run Time: The Honda generator runs for up to 3.2 hours at a 1/4 load while the Yamaha model significantly outperforms with up to 12 hours at the same load. If you need extended run times, the Yamaha could be more suitable.

Physical Specs

Dry Weight: There’s not much difference here; both models are light and very close in weight (13kg for the Honda and 12.7kg for the Yamaha), this is unlikely to influence portability significantly.

Size: Similarly, in terms of dimensions, both are nearly identical and quite compact.

Wheels: Neither model comes with wheels; their lightweight design should still enable easy handling.

Outlets & Parallel Use

AC Outlets: Both generators have one AC outlet.

DC Outlets: They each also have one DC outlet at a rating of 12V – 8A. It means you can charge smaller appliances with them.

Parallel Use: The Honda EU10is allows for parallel use, where two identical units can be connected to double your power output. This capability isn’t available in the Yamaha model.

Features & Usability

Both generators are equipped with recoil starter systems and oil alert systems but lack fuel gauges. The Yamaha EF1000iS includes a brushless alternator and spark arrestor which isn’t specified for the Honda model.

Importantly, only the Honda generator allows parallel use.

Noise Level

The noise level of these generators isn’t severe. At a quarter load, the Honda generates around 52 dBA of noise, similar to light traffic or fridge hum. The Yamaha runs quieter at approximately 47 dBA, comfortably within the range of normal conversation.

Honda EU10is vs Yamaha EF1000iS Comparison Table

FeatureHonda EU10isYamaha EF1000iS
Warranty4 Years4 Years
Engine Type49.4cc, OHV, 4-stroke50 cc, OHV, 4-stroke
Air CooledYY
Running watts900 W1000 W
Max / Starting watts1000 W1600 W
Voltage (AC)240 V230 V
DC Output12V / 8A12V / 8A
AC Frequency (Hz)5050
Rated Output (kVA)0.90.9
Fuel Tank Capacity2.1 L2.5 L
Run time (Hours)3.2 at 1/4 load12 at 1/4 load
Dry Weight (Kg)1312.7
Size (L x W x H)45.1 x 24.2 x 37.9 cm45.0 x 24.0 x 38.0 cm
Number of AC Outlets11
DC Outlets1x 12V1x 12V
Parallel useYN
Starter SystemRecoilRecoil
Fuel gaugeNN
Oil alertYY
Noise Level (dBA)5247


To sum up, both models are quite similar – they’re compact, lightweight, and equipped with powerful inverter technology. The Honda EU10is might be a better choice if you require increased flexibility as it supports parallel use. On the other hand, the Yamaha EF1000iS could be ideal for longer periods of use due to its larger fuel tank and significantly longer run time. It also operates a little more quietly than the Honda model.