Cromtech Outback 2.4kW vs Yamaha EF2000iS Inverter Generators

Cromtech Outback 2.4kW

Higher running power

Bigger fuel tank

More AC outlets

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Yamaha EF2000iS

Long run time

Support for parallel use

More features listed

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A portable generator can be a lifesaver when you’re camping off-grid, dealing with an extended power outage, or needing to operate tools away from mains electricity. However, figuring out which one to choose can be a puzzle. Therefore, we are comparing two popular models – the Cromtech Outback 2.4kW and Yamaha EF2000iS.

These inverter generators come with their unique selling points, such as portability and long run times. We will compare their performance, fuel efficiency, physical attributes, features and noise level to help you decide the best fit for your needs.

Performance & Power

Running Power (W): Cromtech Outback offers 2100 watts while Yamaha provides 2000 watts of continuous power. This means the Cromtech generator can deliver a bit more electrical muscle. Both models could power a large air conditioning unit (2000W) or a table saw (2000W).

Starting Power (W): The starting or ‘peak’ power for Cromtech is 2400 watts and for Yamaha, it’s rated at 2300 watts. There’s not much difference here and both models are quite capable of handling the initial surge from appliances with motors.

Engine type: Both generators employ a similar engine design – a 79cc OHV (Overhead Valve) 4-stroke engine. OHV engines are favored due to their compact size, better fuel efficiency, longer life and increased output of power.

Fuel & Run Time

Fuel Type: Both the Cromtech and Yamaha generators use petrol as their fuel source.

Fuel Tank Capacity: Cromtech comes with a slightly larger fuel tank of 5 litres compared to Yamaha’s 4.4 litres. That extra capacity means less frequent refills for Cromtech users.

Run Time: In terms of run time, Yamaha outperforms Cromtech by offering a whopping 10.5 hours at 1/4 load; however, Cromtech has a variable run time between 5 to 20 hours depending on the load.

Physical Specs

Dry Weight: The weight difference between the two models is trivial, with Cromtech weighing in at 19.8kg and Yamaha at 20kg. Both generators are light enough to be portable but might need some effort to move around.

Size: Both models are fairly compact, with the Cromtech model occupying a slightly larger footprint than Yamaha’s generator. However, this difference is minimal and unlikely to affect your decision.

Outlets & Parallel Use

AC Outlets: Cromtech features two single-phase AC outlets while Yamaha includes only one. So, Cromtech could power more devices simultaneously.

DC Outlets: For DC output, both Cromtech and Yamaha feature similar outlets – two USB ports and one 12V outlet for Cromtech whereas Yamaha has one 12V port. This could impact what you can power or charge with each generator.

Parallel Use: Only Yamaha clearly states support for parallel use, which can double your power output if you connect two identical models together.

Features & Usability

Features: Both models include recoil start systems and indicators for low oil levels. Only Yamaha clearly specifies a brushless alternator and inclusion of a spark arrestor amongst its features – both contributing to better efficiency and safer operation.

Noise Level

Noise Level: The noise levels of both the generators aren’t dissimilar. The Cromtech model runs between 52-59 dB @7m in eco mode with no load while it reaches 60-64 dB @7m during continuous rated output.

Cromtech Outback 2.4kW vs Yamaha EF2000iS Comparison Table

FeatureCromtech Outback 2.4kWYamaha EF2000iS
Warranty2 Years4 Years
Engine Type79cc, OHV, 4-Stroke79 cc, OHV, 4-stroke
Air CooledYY
Running watts2100 W2000 W
Max / Starting watts2400 W2300 W
Voltage (AC)230 V230 V
DC Output12V-8A12V / 8A
AC Frequency (Hz)5050
Rated Output (kVA)Not specified1.6
Fuel Tank Capacity5.0L L4.4 L
Run time (Hours)5 to 20hr10.5 at 1/4 load
Dry Weight (Kg)19.8kg20
Size (L x W x H)51.2 x 31.5 x 44.7 cm49 x 28 x 44.5 cm
Number of AC Outlets2x Single Phase1
DC Outlets2x USB, 1x 12V1x 12V
Parallel useNot specifiedY
Starter SystemRecoilRecoil
Fuel gaugeNot specifiedY
Oil alertYY
Noise Level (dBA)52-59 db at 7m eco mode no load
60-64 db @ 7m continuous rated output


Choosing between these two strong contenders comes down to your personal needs and preferences. If you’re looking for a generator with slightly more power and outlets, the Cromtech Outback 2.4kW could be a great choice. Conversely, if your priority is runtime or possibility of parallel use, consider Yamaha EF2000iS.