Hyundai HY2000Si vs Yamaha EF2000iS Inverter Generators

Hyundai HY2000Si

More AC outlets

Higher Rated Output

Digital Display Indicator

View at My Generator

Yamaha EF2000iS

Quieter Operation

Longer Run Time

Larger Fuel Tank

View at My Generator

Portable generators are handy tools. They can power your camping trips, keep the lights on during blackouts, and fuel your off-grid lifestyle. However, choosing the right one can be tricky. You need to consider size, noise levels, and of course, budget. Today we’re comparing two popular models: the Hyundai HY2000Si and the Yamaha EF2000iS.

Performance & Power

Running Power (W): The Hyundai HY2000Si and Yamaha EF2000iS both offer a running power of 2000W. This is the amount of continuous power a generator can provide – crucial for ensuring the proper functioning of your devices. For instance, both these generators can comfortably operate large appliances like an air conditioning unit or power tools like a table saw.

Starting Power (W): The starting power differs between these two models; The Hyundai sits at 2000W while the Yamaha reaches up to 2300W. Some devices require higher power to start than to continue running, hence this difference could be significant if powering such devices regularly.

Engine type: Both models use 80cc (Hyundai) and 79cc (Yamaha) OHV engines. These engines are efficient, durable and deliver solid performance.

Rated Output (kVA): The Hyundai’s rated output stands at 2 kVA while the Yamaha measures slightly lower at 1.6 kVA — implying that the Hyundai can handle higher current loads safely.

Inverter: Both generators feature inverter technology enabling them to deliver ‘clean’ electricity safe for sensitive electronics like laptops. They’re usually quieter and more fuel-efficient as well.

Fuel & Run Time

Both models use petrol for fuel.

Fuel Tank Capacity: The tank capacity differs – Hyundai has a smaller tank of 3.8L in comparison to Yamaha’s 4.4L tank which means the Yamaha may run longer between refills.

Run Time: Conversely, despite a smaller fuel tank, Hyundai offers up to 8 hours of run time at 1/4 load while the Yamaha provides a superior 10.5 hours at the same load. Considering run times can influence how often you need to refuel, the lengthier duration offered by Yamaha could be beneficial for ongoing uses.

Physical Specs

Dry Weight: The weight difference is minimal with Hyundai at 21 kg and Yamaha only marginally lighter at 20 kg — an insignificant contrast when considering portability.

Size: The Hyundai measures 28 x 45.5 x 51 cm while the Yamaha is slightly larger at 49 x 28 x 44.5 cm – a minor difference that could potentially affect storage or transport considerations.

Wheels: The presence of wheels on either generator isn’t specified which could impact ease of movement of these units.

Outlets & Parallel Use

Both models have AC outlets that let you plug in appliances or other devices, with Hyundai offering two and Yamaha offering one.

In terms of DC outlets, both have one outlet each though the voltage and amp ratings are not specified for Hyundai while Yamaha features a rating of “12V-8A”. This might happen to influence what you can use the generator for.

Parallel use information isn’t provided for Hyundai but is available for Yamaha — useful for increasing power output if required.

Features & Usability

Features like a recoil starter system, digital display indicator (Hyundai), overload protection and low oil shutdown (Hyundai) make both generators user-friendly and safe for use. Safety Features & Usability are important aspects in any generator purchase decision as they offer both peace of mind and added convenience.

Noise Level

Noise levels at 1/4 load stand at 58 dBA for Hyundai and significantly quieter 51.5 dBA for the Yamaha — akin to normal conversation or a quiet office.

Hyundai HY2000Si vs Yamaha EF2000iS Comparison Table

FeatureHyundai HY2000SiYamaha EF2000iS
Warranty1 Years4 Years
Engine Type80 cc, OHV79 cc, OHV, 4-stroke
Air CooledYY
Running watts2000 W2000 W
Max / Starting watts2000 W2300 W
Voltage (AC)230 V230 V
DC OutputNot specified12V / 8A
AC Frequency (Hz)5050
Rated Output (kVA)21.6
Fuel Tank Capacity3.8 L4.4 L
Run time (Hours)Up to 810.5 at 1/4 load
Dry Weight (Kg)2120
Size (L x W x H)28 x 45.5 x 51 cm49 x 28 x 44.5 cm
WheelsNot specifiedN
Number of AC Outlets21
DC Outlets1x 12V1x 12V
Parallel useNot specifiedY
Starter SystemRecoilRecoil
Fuel gaugeNot specifiedY
Oil alertNot specifiedY
Noise Level (dBA)5851.5


The Hyundai HY2000Si and the Yamaha EF2000iS are both well-performing, feature-rich generators. If you’re conscious of noise levels and require extended runtime, the Yamaha could be your pick. On the other hand, if you need a higher rated output or prefer more AC outlets, then the Hyundai might suit you better.