Like all other power tools, I feel that it is extremely important for you to know about an inverter generator before you spend your hard-earned money for that. For this reason, I am going to write this article really big and comprehensive and it features almost each of the segments that you need to know about an inverter generator. I also include a review of best inverter generator. If you don’t have enough time to spend on research or if you are not interested to read this long article, you can simply read the best inverter generator reviews and choose the right one from that list. I have spent my days and nights, researching a wide range of inverter generators, so that you can end up getting the right inverter generator for you. This will not disappoint you. But it is recommended that you read the whole article before making the final decision. Cheers.
Best Inverter Generator for Home Use
Here in this section, I will recommend some models as the best inverter generator. But one thing that you have to remember that no single product is the best, you just have to choose the right inverter generator for you. The right inverter generator as per requirement will serve you as the best inverter generator. I considered every budget level and the applications and made this list accordingly. I tried to find those inverter generators that are from reliable manufacturers and at the same time, they offer great value for the money.
Here at a glance, the models we will be talking about.
Westinghouse WH2400i | 2400W Portable Inverter Generator
- Surge watt 2400, running watt 2100
- 79cc single cylinder engine, direct overhead valve, 4 stroke gasoline type
- 3-gallongas tank lasts 11 hours at 25% load
- Power indicator light & overload resistant
- Supports parallel pairing and has a high-efficiency mode
- Low oil shut down
- Weight 43 pounds
If you are looking for a small generator for camping, Westinghouse WH2400i is probably the best inverter generator for you. Or for your tailgating needs, this can be a great inverter generator. This is powerful enough to run couple of outdoor lights in the night. Also if you are camping outdoors, you can run electric grill, oven, fan, radio, laptops simultaneously. This is not too heavy to carry; the 43 pounds weight has made a one of the most popular small generators for camping.
The 2400 watt starting power and the 2100 watt continuous running power says it all about the capability of the generator. It comes with a USB-10A port, that you can use for charging your smartphone if needed. This can be the best inverter generator for you recreational vehicle. It supports parallel pairing if you need more power. You can make parallel connection using Westinghouse WHPC cable. This flexibility is one of the most favorite handy features nowadays for the best inverter generator models.
With 25% load this inverter generator can run for 11 hours that is almost a day and good enough for most of the cases where you need an inverter generator. The internally padded acoustic hood is there to control the noise that is pretty effective as you see the noise is merely 52 decibels at 25% load. Even under the maximum load the noise does not exceed 59 decibels. Well, if you are not clear what the decibel measurement is, 59 decibel is the same amount of noise when 2 people are talking to each other at 1 miter of distance. Now you know how quiet this inverter generator is. The compact design, light weight, quiet operation, flexibility has made it one of the top rated inverter generators.
Yamaha EF2000iSv2| 2000W>
- 1600 watt rated AC output, 2000 watt maximum AC output, 13.3/16.7 amps @ 120V
- Super-quiet muffler with USFS-approved spark arrestor - 51.5 dBA at 1/4 load
- Surge watt 2000, Running watt 1600
- Smart throttle feature improves the fuel economy
- Runs up to 10.5 hours at 25% load
- Efficient and reliable OHV engine, cast iron cylinder liner
- Very quiet operation
- Parallel pairing available
- Fuel gauge to measure how much fuel is remaining
- Auto decompression system reduces compression for easier starting
- Very lightweight compact design of 44.1 pounds
is one of the best inverter generator models. The customer satisfaction and popularity is very high. This model is a new improved version of the previous model if yamaha’s product line. The previous one was also a star and this one is even better. This is a smart purchase for you is you are looking for smaller generator for camping. The Westinghouse WH2400i, that we have mentioned previously, is a great inverter generator for camping. But if you find that above your budget, can be the best option for you that you can purchase without breaking the bank.
The surge watt is 2000 and the running watt is 1600. The 79 CC engine can run for 10.5 hours under 25% loads. The fuel tank capacity is 1.1 gallon. This is one of the quietest generator models. At 25% load, the noise is 51.5 decibels. On maximum load, the highest noise is 61 decibels. If you want more power, you can make parallel pairing with.
The overall construction and the solid design is a great turn on. Like other Yamaha products, the quality of the product is awesome. The components are high quality and the professional grade service is amazing. If you are looking for one of the best inverter generator models for camping or other tailgating activities, this can be a really smart purchase.
Briggs & Stratton P3000 (30545) | 3000W
- Run time: Up to 10 at 1/4 Load
- Running Amps 21.7A
- Surge watt 3000, Running watt 2600
- 171cc Briggs & Stratton OHV single cylinder 4 stroke gasoline engine
- Runs 10 hours on 25% load
- Automatic idle control, fuel sight gauge, low fuel automatic shutdown
- Very quiet operation
- Stat-station LCD display, centralized control for maximum ease of use
- Comes with a USB charging port, 4 120V outlets, a 30A 120V RV outlet, a 12V DC outlet
- Allows parallel connection
- Weight 84 pounds
When budget does not stop you from buying the best inverter generator,is the one you want, the best inverter generator money can buy. This one comes with a 1.5 gallon fuel tank that is larger than average models. This inverter generator comes with the surge power of 3000 watts and the running power is 2600 watts. The 171cc Briggs & Stratton engine can run 10 hours at 25% load. The versatility and the flexibility of this inverter generator is something that you will love. You can use this Briggs & Stratton 30545 inverter generator to power literally anything that is rated to run at 2600 watts or less. This comes with a USB port, 4 120V outlets, a 30A 120V RV outlet, a 12V DC outlet. You can use the USB port to recharge your phone, the smaller ports to power smaller electronics and the RV outlet to power the rooftop AC of the RV.
This can be connected through parallel pairing cable () for more power. The automatic idle control, the fuel sight gauge, low oil auto shutdown features are there to make this very easy to use. Also the LCD display is there for easier control. This is very quiet inverter generator and produces 58 decibels of noise while on operation. This is the measurement under full load. The weight is 84 pounds that might feel like a bit difficult to move around. But thanks to the design team, the two rear puncture proof wheels are there for easier mobility. There are telescopic front handle and dual lift handles on the top to carry it around.
Briggs & Stratton has a log legacy of quality products; this one is just a continuity of that legacy. The overall construction, design and the quality is pretty impressive, easy to use and flexible. The customer satisfaction is very high for this exceptional power equipment. All these facts and features has made it one of the best inverter generator models that money can buy.
Buy on Amazon
WEN 56200i | 2000W
- Dimensions: 18" x 11" x 18" | Weight: 50 lbs
- Noise Level: 53 dB operation
- Surge watt 2000, running watt 1600
- 7 single cylinder OHV 4-stroke gasoline engine
- Runs 6 hours under 50% load
- Comes with two three-prong 120V AC outlets, a 5V USB port, a 12V DC outlet
- Indicator LED, overload protection, Low-fuel automatic shutdown
- Support parallel pairing
- Weight 54.4 pounds
WEN has been a very popular name in this industry for a long time and never disappointed its client. The quality and the design are great and solid components have made thisone of the best inverter generator models in the market. This one is a mid range inverter generator of 1600 running watt, yet the overall design is impressive. This is packed with great features like the total Harmonic Distortion is under 0.3% at idle, even at load that is under 1.2%.
WEN offers you clean energy, almost as good as the main line at your home. It comes with two three-prong 120V AC outlet in front, a 5V USB port and a 12V DC outlet. Under half load the runtime is impressive 6 hours. It comes with a 1-gallon fuel tank that is pretty standard for a 1600W inverter generator. You can maximize the fuel economy by engaging the eco-mode; it allows the motor to adjust automatically with the fuel consumption.
This is quieter than any window air conditioner, it creates merely 51 decibels of sound under 25% load. The weight is 54.4 pounds. This is a point where you may take is as a drawback. Because there are many different models of inverter generator of same level of power output, specially from the Yamaha and Honda, they are at least 10 pound lighter than
Buy on Amazon
Briggs & Stratton P2200 (30651) | 2200W
- Quiet and fuel efficient 111 cc OHV engine produces 2,200 starting watts and 1700 running watts
- USB port allows charging of portable electronics in order to stay connected. Muffler : Super Lo-tone. Start type: Recoil
- Surge watt 2200, Running watt 1700
- 110CC Briggs & Stratton OHV single cylinder 4-stroke air-cooled gasoline engine
- 1 gallon fuel tank allows to run 8 hours on 25% load
- Super low-tone noise reduction muffler, 59 dB noise on load
- Support parallel operation
- Comes with a 12V DC outlet, 2 120V AC outlet, USB port
- Fuel gauge and automatic idle control
- Total Harmonic Distortion is less than 3%
If theis more than what you need, this model of Briggs & Stratton can be the right choice. You may not need to power an RV rooftop AC or any other large appliances. For smaller purposes and smaller power supply, Briggs & Stratton P2200 is one of the best inverter generator models. This carries all the great features of the big brother, , but with a lower power output therefore more affordable price. For more power it can be connected in parallel pairing using the .
This quiet inverter generator produces 59 dB noise that is almost like a regular conversation. This is a versatile tool and flexibility is no less than any high-end inverter generator. With a 12V DC outlet, two 120V AC outlet and USB port this provide different options for the users to power a range of electronics. The run time is a drawback, you may think. Well, I have same opinion. 8 hours is not up to the comparing to the big brother
Buy on Amazon
WEN 56310i | 3100W
- Surge watt 3100, running watt 2800
- 212cc OHV 4-stroke engine
- Runs 7.5 hours on 50% load
- Comes with 1.85 gallon fuel tank
- Comes with 2 three-prong 120V receptacles, an AC 120V 30A NEMA twist lock receptacle, a 12V DC receptacle, 2 5V USB ports
- Supports parallel pairing
- Creates 57 dB noise at 25% load
- Fuel gauge, automatic overload protection, low-fuel shut down
- Weight 81.4 Pounds
A 2000W inverter generator is considered as a standard inverter generator. If you are looking for a larger power output than a standard inverter generator,is one of the best inverter generators available for you. This is perfect to power the rooftop AC of your RV. This comes with 3100W surge watt and 2800W running watt. The 212cc 3.5HP engine is powerful enough to run a bike. With the 1.85 gallon fuel tank, it can run 7.5 hours on 50% load.
For regular use, this power is more than enough. But if in case you need more power, this inverter generator supports parallel connection that is a must-have for any great inverter generator nowadays. There are 2 three-prong 120V receptacles, a twist lock NEMA receptacle, a 12V DC receptacle and 2 5V USB ports. When such a powerful generator makes 57 dB noise on quarter load, that is pretty impressive. Also the weight is much lighter for a 3100W inverter generator. What are the drawbacks? Sorry, there is not any. Very few clients have complained about the specific unit of the product that does not reflect the overall performance and quality. Considering all these facts and features,
Buy on Amazon
Honda EU2000i | 2000W
- 2000 watts, 120V
- Ideal for TV/DVD, satellite, fridge, coffee pot, and more
- Surge watt 2000, running watt 1600
- Honda GX100 OHV single cylinder 4-stroke gasoline engine
- 95 gallon fuel tank runs the engine for 8.1 hours on 25% load
- Low-oil alert, Eco mode, Intelligent throttling , overload protection, low-fuel auto shut down
- Support parallel pairings
- Comes with 120V AC receptacle, USB receptacle. 12V DC port
- Weight 45.6 pounds
If you are talking about the best inverter generator, you cannot skip this model.is one of the best models, if not the single best inverter generator. Then you may ask why this is on the 7th position of the list, well I have explanation. There is no argument about the quality, construction, design and the performance. But the price is a bit higher than the previously discussed models of best inverter generator. But I personally believe that this price is worth paying. I will explain why.
If you are looking for a smaller generator for camping, or fishing or running your street food vehicles, this can be the best solution for you. Also as a stand-by power support, this is extremely helpful. This comes with a running wattage of 1600W were the surge wattage is 2000W. The 4-stroke engine produces plenty of power making very less noise. The runtime of this generator is 8.1 hours on 25% load with a 0.95 gallon fuel tank. This comes with a 13.3A 120V AC receptacle in front, a standard USB port and 12V DC outlet. If you need more power, you can have parallel pairing using.
The eco throttle system is a unique feature for Honda inverter generators. This allows the engine to automatically adjust and adopt the engine speed according to need exact need of the power at that very moment. This assures highest efficiency so that the energy is not wasted, rather energy is optimized. Where most generators have to run in a certain speed, say 3600 RPM to produce 60 hertz (cycle) electricity, the
Buy on Amazon
Generac 6866 iQ2000 | 2000W
- AC Rated Output(Running/Starting): 1600/2000 Watts; AC Rated Voltage: 120V
- PowerDial integrates start/run/stop functions into 1 easy-to-use dial
- Surge watt 2000, Running watt 1600
- 80cc OHV single cylinder 4-srtoke air-cooled gasoline engine
- Runtime is 5.7 hours at 50% load
- Features PowerDial that integrates start/run/stop in simple dial
- PowerBar monitors and displays wattage used
- Electronic fuel gauge, low-oil automatic shut down
- Lightweight compact design, 46.2 pounds
- Support parallel connection
- 3A at 120V L5-30R receptacle, 5-20R duplex outlet
If you consider the power output,has the same configuration like the . With a 1.06 gallon tank the 80cc single cylinder 4-stroke engine runs for 7.7 hours at 25% load, and 5.7 hours at 50% load. If you go for comparison with Honda, this is quieter one. But is more efficient. The runtime of the Generac 6866 is not insufficient, but the performance of Honda is better. With a smaller gasoline tank, runs longer.
Generac 6866 comes with some handy features like the PowerDial. You can operate the inverter generator with simple dial. The LED display literally shows everything that you need to know about the functionalities, the load indicators, power bar, reset, idle control, run-time counter, fuel bar and many more. This LED display has made it much easier to operate.
On 50% load this generator makes 49dB noise. This is really awesome, even in a library there is more noise than this. This is impressive but they did not actually mention why this is so silent. You will know that the generator is working until you stand right beside that. Considering the price and the features, this deserves its place in the list of best inverter generator.
Buy on Amazon
Champion Power Equipment 75531i | 2000W
- Surge watt 3100, Running watt 2800
- 171cc champion 4-stroke OHV gasoline engine
- 1.6 gallon fuel tanks and 8 hours runtime on 25% load
- Low-fuel automatic shutdown, economy mode, overload protection
- Support parallel pairing
- 58 dB noise at 23 feet
- Weight 83.8 pounds
This is another portable inverter generator that is incredibly silent and packed with handy features. If you are looking for smaller generators for camping or other outdoor activities, I recommend you to have a look on a smaller inverter generator like. is for larger power requirement. Champion has been a famous name in the industry of power equipment for a long time. The power production of this inverter generator is 3100 surge watt and 2800 running watt. The runtime is 8 hours on 25% load and the fuel tank capacity is 1.6 gallon. It comes with a TT-30R RV ready outlet, since this is designed to power larger equipment like the Rooftop AC of an RV.
For even more power, if you need, you can make parallel connection. The electricity it delivers is clean, in some areas it is cleaner than the main line. The noise suppression is one of the best features of this great inverter generator. The noise level is beneath 58 dB. You can consider having this inverter generator if you need more power than average and that will be a smart decision, smarter than buying from a cheap and ‘not so good’ manufacturer.
Generac iX800 (5791) | 850W Portable Inverter Generator
- Surge watt 850, running watt 800
- 38cc single cylinder OVH variable RPM gasoline engine
- 5 gallon fuel tank allows the engine to run 3.5 hours on 50% load
- Low-oil auto shutdown, overload protection
- Weight 29 pounds
When you need to run the small electronics like coffee machine or electric chainsaws, this is a great small inverter generator. This handy power tool has maximum amperage of 7.1A, so keep your expectation accordingly. In front there are three status LED, low oil, overload and ready. You can select eco mode. The weight is only 29 pounds and you can actually carry that around fairly easily. It can power the electric grill or a compact TV in your RV, sometimes a small refrigerator.
—Why you need a generator—
We cannot live without air, we have to breathe, or we will die. Electricity is such an important component of our everyday life, without this we are going to be almost like dead. This is a clean form of energy that is silent and invisible. And this clean energy is the lifeline of almost each of the modern home appliances, power tool, gadgets or any recreational devices. Electricity can be produced in various ways from running water, or using the solar power, or burning coal, or using the wind power of nuclear reactions. What we will do if suddenly there is no electricity around?
Let’s make is easier for you, imagine a world where there is no electricity. Think about a life where there is no electric device, no computer, no smartphone, no AC, no TV, in short- a total blackout. I am sure you started getting a clear sense of what I want to mean. Yes, that is terrible, but that is the situation you are going to face in case of any natural calamity or any other type of power cut, that requires few days to get repaired, if not weeks. You are going to suffer a lot if you do not have any alternative sources of power. If you do not have an electric generator at home, oh dear, you are about to take a trip back to the time when there was no electricity and people used to live in cave, kidding.
If any natural calamity strikes like floods, tornadoes, hurricanes or anything else and that results in power outage, may be torn power lines, damaged power stations or anything else, you will have to be in complete blackout for few days, if you are lucky not for weeks. So getting a generator at home is extremely helpful while you are really in danger. Since the natural calamities strike suddenly, without any prior notice, the best way is to be prepared for any such type of situation. Like food and tools, you need to save electricity; otherwise you are not going to survive for long.
In modern days, since there is weather forecast, you may think to purchase the generator before the storm strikes. Trust me, this is possibly the worst decision you are making. Ask me why? The reason is that every other person is going to do the same and the retailers are going to run out of stocks. Better do some research now and find the right and best inverter generator for you so that you don’t have to be in trouble.
Now let’s talk about other usages of an inverter generator. In modern days there are many more uses of an inverter generator than just being a backup power source for you power tools and appliances in case of power outages. You may be someone who loves outdoor activities like fishing, camping, tailgating. Can you imagine how useful a power source can be during outings? Small portable source of power, a portable generator can change the whole idea of outing. You can use electric grills, heaters, microwaves in outing, you can even recharge your smartphones or laptops.
Most of the portable inverter generators are silent and great to use in outing. Also you can easily pug in outdoor power tools like electric log splitter, leaf blower, snow blower, power saw, or any other power tools. Most of them come with USB charging ports and 12V sockets on the front panel. Thus a portable inverter generator enhances the options of your activities. Why limit your fun when you have a 50 lbs power source with you? So now you know that you should go and buy a generator. Wait, buying a generator is completely different than choosing the right and the best inverter generator. There is a very crucial line between these two. Any wrong decision will cause the wastage if your money. But do not worry, my guide to choose the best inverter generator will drive you do the right track. Just keep following.
Above, I have made a shortlist of best inverter generators. If you do not have much time to spend on it, you can take help from that. Otherwise better do some research and follow my comprehensive guideline. If it’s your first time, that’s not even a problem. There are different power levels for different usage. If you need to use aggressive power tool that requires more energy, you need to spend for some gas driven generators, they tend to be more powerful. To know more about that follow my blog post about “the right size of generator do I need for me”.
—Conventional generators vs. Inverter generators—
I am not going to explain all the technical details of a generator here. If you are interested to know more, you can visit my blog post on how a generator works. Here in this segment I will try to explain what the basic differences are between a conventional generator and an inverter generator.
—Output: A conventional generator can deliver more power than an inverter generator. Yeah sure, it’s a very generic statement. The exact power output depends on price and specific model of the generator. But normally a conventional generator delivers power ranging from 3000 to 20,000 watts. On the other hand, an inverter generator offers power output of somewhere between 4000 to 5000 watts. Now you know that an inverter generator’s capacity can be significantly lower than a conventional generator, but do not make any decision on that. Do you actually need that much power that a high-end conventional generator delivers? This is a very crucial question to ask yourself while buying the best generator for you. With the 5000 watts of power you can do so many things that you may not even need a conventional generator. You can run the rooftop AC of your Recreational Vehicle (RV), watch television and run a microwave at the same time. Most of the cases you will not need a conventional generator.
You may think of power failure. Even during a power failure 4000-5000 watts can be enough to run what you actually need, say for example 4 fans, 8/10 LED/CFL lights, a TV, a microwave, a water heater and a laptop. So this is true that a conventional generator delivers more power, this cannot be the only decision making point. In most of the cases you will not need more power than what a high-end inverter generator can offer. Also, if you consider the efficiency and clean energy, purchasing the best inverter generator can be the smartest choice.
—Fuel Capacity: Here, for this feature as well, you may find that inverter generator is not a good choice on first glance. But you will change the decision soon. Let me explain why. An inverter generator is small in size and that is portable, has less weight than a conventional generator. Portability is a real handy feature nowadays. But the tradeoff of this portability is smaller fuel tank; therefore it can take only 8.0 to 2 gallons of fuel. But what we care about is not the size of fuel tank, rather the output. How much electricity we can get from the fuel? Considering the efficiency of fuel, inverter generator is clearly the better choice.
Since inverter generator comes with four-stroke engines those are assisted with extremely efficient micro processor. The overall design of the engine is highly optimized for efficient power output. That is why inverter generator produces more power per drop of fuel.
—Noise, Efficiency & portability: The mechanism of inverter generators are optimized for highest fuel efficiency. An inverter generator has smart speed control system that assures that the generator is much quieter. The superior engine design, intelligent load monitoring, microprocessor assisted operation and all the mechanism are there to make inverter generator a clear winner among the two types. The inverter generator causes lower emission and thus they are eco-friendly. In recent time, a quiet and efficient generator is really handy and being environment friendly is a great feature. Considering all these, purchasing the best inverter generator will make you the gainer. In some cities and areas there are strict rules about noise, so you have no other option buy going for the best inverter generator.
Due the design of the engine, even a small sized conventional generator is larger than inverter generator. Also they have larger fuel tank and the size is bound to be bigger. So if you need to travel a lot and you need the generator for camping or other outdoor activities, an inverter generator is the best choice. The inverter generators are remarkably lightweight and they are designed to be portable.
—Price: Now, this is the only feature where a conventional generator is a clear winner. The reason is pretty simple. You are getting really handy features like portability, less noise, more efficiency and all these comes as a tradeoff of price. You have to pay more for an inverter generator to get all the handy features. Since the design and the performance of a conventional generator is not much polished like an inverter generator the conventional generators are much cleaner. So if you do not really care about the sophistication of an inverter generator, a conventional generator will be better for you. If you have appliances that are hungry for power and those are not sensitive to current quality, you can get a conventional generator. Also if you do not care about the heat and noise, you need to run the generator continuously for a pretty long time and most importantly if you are looking for a cheaper solution, a conventional generator will be better.
These are the basic differences between an inverter generator and a conventional generator. These are the features that actually make differences in purchasing decision. There are few other differences like you can run parallel operation in inverter generator. Most of the inverter generators can be tethered to another generator of similar model. There is special tethered cable and that allows syncing their output capability. Say for example, in a party if you bring 2000 watts inverter generator and your friend bring another one of same model, you can hook up them both and then generates 4000 watts power.
—How to choose the best inverter generator—
You should have a clear idea why you should purchase an inverter generator instead of a conventional generator. So if you have made up your mind to purchase the best inverter generator, you should spend some more time to read what the features are that you should look for in an inverter generator so that you end up getting the right power tool. There are many models of inverter generator in the market and they manufacturers always comes up with new and innovative marketing ideas, those are the reason why it is sometime difficult to get the best inverter generator. You should go for some well known manufacturers like Yamaha, Honda, Campion or Wen. If you purchase the product of reliable and well known brands, you are going to get the assurance of getting the well designed and solid built inverter generator, sometime that comes in tradeoff some more bucks. I consider spending a bit more for a reliable brand is worth it.
Now, we will discuss the features that you need to ask before making the final decision of purchasing the best inverter generator.
—Portability: One of the main reasons why you choose an inverter generator over a conventional generator is portability. So make sure that the best inverter generator you are going to buy has easy portability. Sometimes there are suitcase style handles so that you can carry them wherever you want. But of course they will not be light like a suitcase. Some models have luggage-trolley type telescopic handles on the front to make this transportation process super easy.
—Less noise: Usually a conventional generator is known for its loud noise, and that can really disturb the neighborhood. The inverter generator technology has minimized the noise by a generator. Inverter generator does not constantly run at full speed since the mechanism allows the engine speed to be adjusted proportional to the load applied on it. So make sure to read the level of noise that your inverter generator makes.
—Manual fuel shut-off switch: Unlike other home appliances, an inverter generator is not something that you need to use always. Most of the cases, you will need an inverter generator while going outdoor in camping or picnics or in case of any power outage at home. Most of the time of its life, an inverter generator stays in storage. That is why it’s important to drain out even the last drop of fuel, before you prepare it to keep in storage. Otherwise fuel may leak and evaporate, clogging the fuel system.
Good generator models feature a switch to turn off the fuel system automatically when the engine is shut down. This prevents fuel leakage or loss.
—Automatic shut-off in low fuel: The best inverter generator should have indicator light to show the amount of fuel inside the tank. Also there should be automatic shutoff mechanism if there is low-fuel in the tank. Why is that? Sometime you notice that the generator is running for hours and then it starts making weird sounds. This is not good at all for the engine. The weird sound indicates that the engine is not lubricated properly and that may end up engine failure. And you have done before you should know, that repairing an engine will cost you at least half of the price of the generator, trust me that is expensive. So make sure that he inverter generator you are buying comes with indicator light an automatic shut-off system in low-oil situation.