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You may have seen small portable diesel generators in your travels. You might even own one yourself, but you’re not sure how to take care of it or what to do when something goes wrong with it. This article will help you understand more about these products and give you the knowledge needed to take care of your generator for years to come!

What Is a Generator and Why You Might Need One at Home

A portable generator is a machine that converts mechanical energy into electrical energy. In other words, it takes the motion of something and turns it into power you can use to charge batteries or run electricity through your home.

You might have seen people using these generators at outdoor events where there isn’t access to standard electric outlets, but they’re also great for emergency situations when a storm knocks out power or during construction sites where tools need consistent power.

How does a Diesel Generator work?

Diesel generators utilize a combustion engine to generate electricity. A generator is just an electric motor, but in reverse. In other words, when the engine on your diesel generator spins it creates energy which can be used immediately or stored for later use.

In order to be considered efficient and cost effective, diesel generators must turn at least 3600 revolutions per minute (RPM). To give you some perspective about this number: a car’s tire rotates roughly 60 times per second whereas a ceiling fan moves through the air almost 200-times every minute! Generators working faster than that are more expensive and less reliable while those that spin too slowly will not produce enough power to meet most people’s needs.

Best Portable Diesel Generator review

Generac 6864 XD5000E

Generac 6864 XD5000E

The Generac XD5000E is built for power and efficiency which makes it ideal for both homeowners looking to have a backup source of electricity in case of outages or construction workers who need extra amenities on the job site no matter where they are! It has an impressive maximum power output at 5000 starting watts & 7000 running watts so you can use many different appliances all at once without fear of overloading this machine. In addition, the 10000-watt surge allows you to run several high-powered devices simultaneously while still maintaining top speed when needed most!

There’s also plenty of outlets available with two 20 amp 120 volt household plugs along with four twist lock outlets rated for 20 amps each which are perfect to run additional electronics at once.

The XD5000E also comes with a large fuel tank capacity of 13 gallons so you can use it all day long without needing refueling very often and the low-noise muffler ensures your neighbors won’t hear anything even if its running overnight! It’s also backed by an impressive three year limited warranty & two year unlimited hour warranty on the engine along with one year parts coverage just in case there is any damage or mechanical failures that occur during normal usage , etc.

  • Very fuel efficient machine that won’t cost you a fortune to run.
  • Ideal for construction worksites & emergency backup power in case of outages.
  • Aims to reduce noise with its low 75 decibel rating which is ideal if using it overnight or closeby neighbors etc.
  • None
Cummins Onan Quiet Series RV QD10000

Cummins Onan Quiet Series RV QD10000

The Cummins Onan Quiet Series RV QD10000 is another excellent choice for powering your recreational vehicle, tailgating events , etc. It also has several safety features including a circuit breaker to protect its engine from damage during any type of usage !

It can provide enough power output at 10000 starting watts & 12500 running watts with just one tank holding 26 gallons of diesel which ensures you won’t have to refuel it often and can run most appliances all day long if needed . In addition, the inverter design makes it super quiet so you can have a conversation next to it unlike other models which are pretty much noisier than lawnmowers!

The QD10000 has 70% more power compared to the Onan 7000 running watts , comes with an above average warranty of 24/36 mos ., is EPA approved & CARB compliant., and mostly importantly – backed by outstanding customer service !

You won’t be disappointed in this investment that’s for sure if it meets your prerequisites since its well worth every single penny spent on it. It will run larger appliances including AC units without any problems but keep in mind that starting watts rating should not be exceeded when powering them or there might result issues. This generator deserves our full recommendation as well as two thumbs up for being so dependable & powerful .

  • It’s extremely quiet and runs smooth.
  • It has more power than the Onan 7000 watt generator for a better price .
  • The fuel tank is not as big as some other models out there, but that also means this one takes less time to refuel it.
Durostar DS4000S Portable Generator

DuroStar DS4000S

The Durostar DS4000S is another excellent piece of equipment that won’t let you down whether it’s used for emergencies, tailgating events , camping trips etc. It will provide enough power at 4000 running watts & 4600 starting watts with one tank holding five gallons of diesel fuel which ensures you won’t have to refuel it often . The inverter design makes this generator super quiet compared to other models out there so you can easily hold a conversation next to it without having any issues hearing the person sitting right beside you.

It has many safety features including an overload protection circuit breaker and low oil shut off sensor in addition to being CARB compliant meaning its considered safe for sale within California as well as EPA approved! Such performance comes from its OHV engine which has one of the finest reputations in the industry thanks to their long life span and easy start up so you won’t have any trouble getting it started even on colder days.

Not only does this model come with an electric keyed starting system but it also features a battery charging port for powering or recharging your electronics when there’s no power available . You can connect up to three RV receptacles that are rated at 20 amps each (120v) making them perfect for plugging in small appliances like TVs, fans etc. It comes with many other outlets including two 120v standard household outlets , one 12 volt DC output & its capable of running off either LP gas/natural gas as well!

  • Inverter technology makes it super quiet
  • Powerful & reliable
  • Comes with many outlets including a battery charging port for powering electronics when there’s no power available.
  • Noisy operation mode on high load.
Rainier R2200i Super Quiet Portable Diesel Generator

Rainier R2200i Super Quiet Portable Diesel Generator

At only 51 decibels, the Rainier R2200i is one of quietest and most fuel efficient generators on the market. It’s built with a cast iron sleeve & dual ball bearings which prolongs its lifetime while ensuring it remains sturdy for years to come . The engine works very efficiently at an astounding 50% thermal efficiency rating so you won’t have to constantly refill the unit during use (one tank can last up to 12 hours).

It comes with many outlets including two 120v standard household outlets , four AC 20A RV receptacles that are properly grounded in addition to having twist lock plug adapters making them perfect for connecting appliances like TVs or fans without any problems whatsoever. You’ll also be able provide power through your USB port and even a 30A twist lock outlet which allows you to power up your RV or boat if necessary.

The R2200i is also equipped with an automatic voltage regulator that ensures the generator maintains output even when there’s fluctuations in electricity – perfect for areas where blackouts and brownouts often occur! It operates on diesel fuel so it has the added benefit of being very environmentally friendly as well (which we definitely appreciate). You can choose from two different wattage models: 2400 watts and 3600 watts depending on your personal needs so be sure to check those before ordering this unit.

  • All-inclusive unit with all necessary features
  • Produces less than 50dB of noise so it’s great for camping or in areas where noise can be an issue
  • Very fuel efficient and lasts up to 12 hours on a full tank
  • Somewhat heavy at 143 pounds which makes transporting difficult
A-iPower SUA2000iV 2000 Watt Portable inverter Generator

A-iPower SUA2000iV 2000 Watt Portable inverter Generator

The A-iPower SUA2000iV is a great option for those looking to power up sensitive appliances like computers and televisions. It’s equipped with an automatic voltage regulator that allows it to detect fluctuations in the AC current from your outlets which means you won’t have to worry about any damage being done to your devices during use!

It operates on gas or propane so if you don’t want it running out of fuel, we recommend finding one with a longer run time (it lasts for about seven hours). The unit weighs 97 pounds which makes transportation much easier than other portable diesel generators but still isn’t as lightweight as some inverter options on the market.

The generator comes with a 12-month warranty and is EPA approved for use in all 50 states. It’s also CARB compliant which ensures that it won’t produce harmful emissions while running (so you can feel safe knowing its eco-friendly!). The unit runs quietly at 59 dBA so you won’t have to worry about your neighbors getting annoyed after turning on this machine!

  • All-inclusive unit with all necessary features
  • Runs quietly at 59 dBA
  • Automatic voltage regulator detects fluctuations in AC current to protect sensitive appliances from damage
  • A bit pricey
Champion 3400-Watt Dual Portable Inverter Generator

JChampion 3400-Watt Dual Fuel Inverter Generator

The Champion 3400-Watt Dual Portable Inverter Generator is a great option if you’re looking for an inverter generator that’s more lightweight than the A-iPower SUA2000iV. It runs quietly at 56 dBA so your neighbors won’t be annoyed by any loud noises and it supports up to 2400 watts of continuous power!

It comes with two 120 volt outlets, three 12v DC ports (one being a fast charge port) that can each support up to 20 amps which makes this unit perfect for charging larger items like tablets or car batteries. Just plug in your RV, pop open a cold one and enjoy some tunes on its Bluetooth speakers to make camping even better!

The unit operates on propane fuel or gasoline, has a strong 196cc Champion OHV engine that produces 2000 starting watts and 1600 running watts. It also comes with various safety features to ensure your little piece of mind is safe including an overload protection system, low oil shut down sensor and more.

The unit measures 13.19 by 18.66 by 19 inches which makes it fairly portable at 57 lbs., but since it’s not super light like the A-iPower SUA2000iV you probably won’t be taking this one on camping trips too often (although it does come with two folding handles). The good news is that you can use the included wheel kit for easy transport around your home or job site!

  • Inverter technology for quieter operation and more efficient power usage
  • Supports up to 2400 watts, perfect if you have larger items that require charging or powering
  • Can run on propane or gasoline so it’s kind of a two in one deal!
  • A little heavier than other models at 57 lbs.
Westinghouse WGen3600v Portable Generator

Westinghouse WGen3600v Portable Generator

The Westinghouse WGen3600v Portable Generator is a very popular option, especially if you’re on the market for an inverter generator! This one runs quietly at only 51 dBA so your neighbors won’t be annoyed by any loud noises and it supports up to 3600 watts of continuous power. It even comes with two 120 volt outlets that are perfect for powering or charging larger items like laptops or small appliances.

There’s also three 12V DC ports (one being a fast charge port) which can each support up to 20 amps making this unit great for charging tablets, car batteries and other smaller devices as well. Just plug in your RV, pop open a cold one and enjoy some tunes on its Bluetooth speakers since it does come with a built-in AM/FM radio. You can even charge your cell phone or laptop with its USB port.

This generator also comes with a wheel kit, handle kit for easy handling and an electric key start system that makes it very simple to get up and running in no time. With a fuel capacity of six gallons you’ll be able to run this machine all day long without needing any refueling breaks making it great for camping trips when power is hard to come by! It’s carb compliant so don’t worry about having issues getting it registered when the time comes.

  • Very quiet
  • Lots of power outlets for larger appliances or to charge multiple devices at once
  • Can be quite heavy to carry around by yourself.
AMICO Power AHW6000LE Diesel Welder and Generator

AMICO Power AHW6000LE Diesel Welder and Generator

The AMICO Power AHW6000LE Diesel Welder and Generator is an awesome portable power generator that can be used for all your welding or construction needs. It comes with a powerful 196cc OHV engine that produces 3600 running watts of electricity which should handle most jobs around the house easily!

It has two 120 volt outlets, three 12 volt DC ports (one being a fast charge port) as well as one 20 amp AC outlet so it’s compatible to use along side many different types of appliances. This machine also supports starting from either its electric key system or by using its manual pull start if you prefer more hands on charging methods.

There are several safety features built-in such as overload protection, short circuit prevention and low oil shutdown to keep you and your property protected. In addition, it comes with a one year warranty for any defects in parts or workmanship upon purchase which can be extended to three years if registered within 30 days of the original purchase date! Some assembly is required but this generator itself is fairly simple to use when completely set up so you should have no problems whatsoever especially after reading through its user manual first.

  • Strong. Powerful and capable of handling most jobs around the house without a problem
  • Easy to use.
  • A bit pricey compared to other generators
Onan Quiet Diesel Generator

Onan Quiet Diesel Generator

The Onan Quiet Diesel Generator is a great option if you’re looking for an incredibly quiet generator that’s also very portable. It has 310 running watts and 375 starting watts so it packs enough power to handle most jobs around the house easily!

It comes with several different charging options such as standard 120 volt outlets, USB ports and even two 20 amp twist lock AC plugs which makes this unit compatible to use along side many small appliances. There are several safety features built-in such as overload protection, low oil shutdown and automatic voltage regulator (AVR) to keep you protected from any possible damage or accidents during usage. In addition, it can be started by either its electric key system or via its 12V battery charger making it more convenient than using a pull start.

This generator is very quiet and will not disturb your sleep or animals outside when in use which makes it great for camping, RVing or even at the cabin! There are also four different outlets available to power various appliances so you should have no problem using this while on the go either. It’s fairly easy to move around with its lightweight design and comes with a one year warranty upon purchase plus an additional three years can be purchased if registered within 30 days of original purchase date – otherwise it has a two-year limited factory warranty that only covers defective parts but doesn’t include labor costs.

  • Incredibly quiet
  • Can be started with either an electric key or 12V battery charger for more convenience
  • Very lightweight and easy to move around if needed
  • A bit pricey compared to other similar portable generators on the market.
WEN Super Quiet Generator

WEN Super Quiet Generator

The WEN Super Quiet Generator is a great option if you want an incredibly quiet generator that’s also very affordable. It has 300 running watts and 400 starting watts so it packs enough power to run most appliances around the house easily!

It comes with two standard 120 volt outlets, one 12 volt DC port  as well as one 20 amp AC outlet making this unit compatible to use along side various small appliances while on-the-go too. There are several safety features built in such as overload protection, low oil shutdown and automatic voltage regulator (AVR) just like many other more expensive models available which will prevent damage or accidents during usage for peace of mind when using your new generator.

To start this machine, it features an incredibly easy pull recoil start that requires very little strength to get this unit up and running. It also has a push button electric start for those times when you need additional power or are unable to use the pull cord.

This product weighs in at 43 pounds making it lightweight enough even for most people of average height, but if not carried correctly could cause injury during usage so make sure someone is with you while using your new generator! This machine only runs on diesel fuel which can be purchased from any gas station around town without worrying about speciality oil needed like some other models available. Just fill up your tank and go!

  • Super quiet and easy to transport
  • Lightweight for ease of use
  • Affordable
  • Only runs on diesel fuel which can be more expensive than gas or propane, but lasts longer with less refilling needed.

Buying Guide for Portable Diesel Generator

Cooling system

The cooling system of a generator is important because it can affect the engine performance and its lifespan.

If you buy a unit that has only one fan to cool both the alternator and engine, then this will usually cause overheating problems which lead to shorter life for your diesel power plant. This means that it won’t run as efficiently or produce enough energy throughout each day/month etc… The best way to avoid these issues is by buying a model with two fans – but even better would be three! In addition having at least four inches between them helps ensure proper airflow around all sides of components so they don’t overheat from within.

Fuel Consumption

Another important factor to consider is the unit’s fuel consumption. You will want to look at how many gallons your generator uses per hour because it varies depending on the size of its engine.

Smaller units have an average rate of .75-gallons/hour while larger models can use up to two gallons or more every single hour! Although this may sound like a lot, you need to remember that these generators are designed for heavy usage so they must be refueled often during each day/week etc… The best way around this issue is by buying a model with an easy access dipstick which allows you don’t waste time removing it from storage just in order check levels then waiting for them too refill again before returning it back inside your home.

Ease of Use and Management

Some people aren’t very familiar with diesel generators but rest assured they are not difficult to use or manage.

The best way around this issue is by choosing a model that has an electric starter instead of the standard pull cord ignition system because it makes starting your generator much easier and faster, which means you won’t waste anytime running back and forth between the unit itself & its power source! Plus, many models come with push button start buttons as well so even if there’s no electricity available at all you can easily get your machine started without any problems.

Dimensions and Portability

The best way around this issue is by choosing a model that has been designed specifically with your needs in mind.

There are many different sizes and types of diesel generators available on the market today so it’s important to make sure you measure its dimensions before purchasing one because they vary dramatically from unit-to-unit! In addition, portability is another factor which must be considered but fortunately most come equipped with caster wheels for easy transportation without any problems or inconvenience at all even if there’s no electricity whatsoever!

Can diesel generators withstand all weather conditions?

Diesel generators are designed to function properly in all weather conditions. It is not uncommon for them to be used outdoors because they can withstand rain, snow and ice just fine without any problems or damage caused by winter-related elements at all!

However it’s important to remember that diesel doesn’t operate well when the temperature drops below freezing levels so make sure you store yours inside your home during cold winters months etc… This will ensure optimal performance & lifespan even after years of use.

Are there any safety precautions when using a diesel generator?

It is important to ensure the proper safety precautions are taken when using a diesel generator. Although many fear that these machines can be dangerous, it’s actually quite safe and we recommend you always use them in well-ventilated areas to reduce carbon monoxide poisoning risk as much as possible!

In addition make sure its fuel tank cap has been closed tightly before starting your unit because this prevents fumes from escaping around the area which could lead to harmful effects on anyone nearby such as headaches or even death if too close for comfort etc.

How fuel efficient is diesel gens?

Diesel generators are one of the most fuel efficient machines available on today’s market and can provide power for hours with just a few gallons.

This makes them extremely popular among many different types of people because they cost less than propane or gasoline powered generators, don’t require too much maintenance and never run out of energy ever! So whether you want to use it during emergencies such as winter storms which cause widespread blackouts for weeks at a time or simply need power when camping in remote locations , this is definitely an option worth considering.

Tips for Using a portable diesel generator

  • Use a long enough extension cord to prevent overloading of the generator. An overloaded portable diesel generator will cause damage to your machine and dangerous malfunctions like fires or explosions can occur if it is not powered correctly.
  • Don’t connect a portable diesel generator into a home circuit without consulting with an electrician first. It is not safe to plug a portable diesel generator into certain household appliances and outlets, so never do it unless you have been advised by an expert.
  • NEVER hook up two generators together as one will automatically shut off for safety purposes if the load becomes too high on either of them. Portable diesel generators are manufactured to function optimally at 50% or less capacity than what they can handle. If hooked up in parallel, neither generator will work correctly because each machine is trying to push beyond its capabilities – this would also be extremely dangerous.
  • Use proper ventilation when operating your portable diesel generator indoors – NEVER use inside a garage or building. This is because of the serious health risks that can occur when you inhale carbon monoxide (CO).
  • NEVER use a portable diesel generator in any area where flammable materials are stored or used. Some common areas include garages, basements and attics – all spaces that could have gasoline, paint thinner or other chemicals present which would be extremely dangerous to use with an open flame.
  • When operating your machine, always stay near it so you are aware if there are malfunctions. Portable diesel generators emit fumes from its exhaust system during operation – this will indicate whether combustion levels are too high for safe usage.

Why Use Portable Diesel Generators?

It Has a Longer Shelf Life

When you buy a portable diesel generator, it comes with an entire kit. You will receive the engine itself along with filters and oil to keep your unit in good condition for years to come.

Diesel generators are built tough so that they can handle heavy usage without suffering damage or needing repair services too frequently. This means that even though you may use them long hours each day, month after month, year after year – these units won’t need much maintenance outside of basic upkeep like filtration changes every few hundred hours or lubrication at regular intervals.

It’s Easy to Maintain

Diesel generators are not difficult to maintain. If you can change the oil in your car, then you know enough about how engines work and what they need to stay healthy. You will want to check filters regularly (usually every 100-200 hours) while also changing the fuel filter every few years or so depending on usage time per day/week/month etc… It is important that these components get replaced when necessary because if maintenance isn’t done properly it could cause serious damage to your generator’s engine which requires professional servicing at a high cost!

It Has a Longer Lifespan

Everyone wants to make smart purchases, but it’s hard when there are so many options available on the market.

Although portable diesel generators cost more upfront than most other types of generator units, they come with a long lifespan which means you will save money in the future by not having to replace them as frequently as others!

It’s Efficient

Diesel generators are more efficient than most other types of units. They produce less noise and this means it is easier to hold a conversation or watch TV without straining your ears since the noise level will not be as loud.

In addition, they also have better fuel mileage which saves you money on future purchases! Plus, diesel engines don’t need refueling nearly as often as propane generator counterparts do – resulting in an even bigger cost savings for those who use their unit regularly throughout the week/month etc…

Frequently Asked Questions

How do I know if my generator is a good quality brand?

There are hundreds of different brands and models to choose from so it can be difficult to decide which one you need. When choosing the right portable diesel generator, check out online reviews written by other customers who have purchased your desired model or ones similar – this will give you an idea about their satisfaction with the product’s performance. You should also look for features that are important to you such as wattage capacity, portability of design, noise levels during operation etc. A high-quality manufacturer will provide customer service 24/seven in case any technical questions arise after purchasing your machine – having access to these resources allows users peace of mind when making large purchases like these.

How long can I expect my portable diesel generator to last?

A high-quality product should provide 30 years or more of operation time when maintained and used correctly. However, the average lifespan for these machines is around 20 years before you will need to replace it – this comes down to how frequently it has been in use during its lifetime. Many people purchase a new machine after their old one breaks down because they cannot find parts for repairs anymore – so don’t worry about replacing your model too soon if it still runs well!

What do all those numbers mean on the side of a portable diesel generator (cc,kw)?

The cc number stands for cubic centimeters which shows the engine capacity that determines the amount of power the machine can generate. A kW number on its own stands for kilowatts which is a measurement unit that shows how much electrical energy the generator produces over time.


We’ve covered a lot of ground in this article and hopefully, you have gained some insight into what to look for when shopping around for the perfect portable diesel generator. If not, we encourage you to check out our buying guide or FAQ pages which should provide more information on all things related to generators. At the end of the day, your decision will depend on how much power you need and where it needs to be stored (indoors vs outdoors). Whether you are looking for something small enough that can fit in your basement or garage or want an emergency solution that is easy enough to carry with one hand while running from zombies, we hope we were able to help make your life easier!