The Most Comprehensive DuroStar DS4000S Review: Worth It?

By Jack | Resources

Dec 08

DuroStar DS4000S Review

The DuroStar is known for its reliability and versatility as a generator perfect for RV's, camping, job sites, and temporary power for the home.

Having a reliable generator can be a valuable asset when you are at a job site or enduring a lengthy power outage. The DuroStar is one of a number of different generators available, and it offers an impressive set of useful features and specifications.

Before searching for a generator, you'll want to consider your power needs and how much wattage you will require to run the tools or appliances in question. While some machines, such as a toaster, require minimal power to run, be sure to consider the power surge of the unit turning on and performing different functions in your overall calculations.

The DuroStar brand has been around long enough to have a well-established reputation for quality and reliable products. You can find many different DuroStar products for sale at Home Depot as well as at online retailers such as Amazon, Max Tool, and Sears.

What Is DuroStar DS4000S and How Does It Work?

DuroStar DS4000S, 3300 Running Watts/4000 Starting Watts, Gas Powered...
  • POWERFUL DUROSTAR ENGINE: The DS4000s is Powered by a DuroStar 7.0 Hp, air cooled OHV engine w/low oil shutoff.
  • PLENTY OF POWER: With 4,000 starting watts and 3,300 running watts, this unit is a workhorse that provides plenty of...
  • POWER PANEL: Includes a selection of outlets for maximum compatibility in your applications including: 2 120V household...

The DuroStar DS4000S is a gas-powered generator with a 7 Hp engine that is air cooled. It offers a variety of plug options and can produce a continuous flow of 3300 watts. This generator operates on gas and has a total run time of 8 hours on a single 4-gallon tank.

The DuroStar features:

  • A sturdy and traditional metal frame that firmly secures the engine and other components in place with minimal movement
  • A muffler that serves to make the unit quieter during use
  • A 4 stroke OHV engine mounted with isolated mounts for smoother operation

If you are in the market for a traditional generator fit for emergency use or more frequent job site use, this generator also has an optional wheel and stand package that makes it easy to move to where it's needed. Its light enough for one person to lift and the optional handle makes placing it in different areas easy.

Use Cases and Specifications

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For emergency situations, this generator can run a few appliances, and is capable of a 4000-watt surge should multiple devices turn on at once. While this unit isn't robust enough to run a whole house of appliances at once, it is more than sufficient as an emergency unit to power things like a refrigerator or freezer.

This generator measures 20x27x22 which makes it relatively small for the amount of power that it puts out. The downside is that it weighs in at almost 90 pounds which is not the lightest on the market, but reasonable enough for moving only on occasion.

The DuroStar DS4000S generator is also ideal for use with RV's when camping, at sporting events, or other remote situations where power is needed. The brand has a long-standing reputation for providing high-quality units known for longevity at an affordable price.

If you plan to use many different lower wattage appliances or tools, you may want to invest in a splitter to increase the number of plugs available on the unit. These are available for purchase and run anywhere from $15-$20.

Running Appliances

The DuroStar is excellent for when you're on a job site but knowing how many appliances it can handle when your home is out of power is essential. Generally, it is advised to check your appliances for their running watts and surge watts to avoid overloading the generator.

For example, a refrigerator may have running watts around 700, but these watts can surge to 2200 when the unit starts up or performs different functions. The DuroStar DS4000S can also power other appliances such as Microwave ovens, coffee makers, toasters, well pumps, sump pumps, and furnace fans.

How many of these appliances you’ll be able to run at once will depend on the individual appliances’ power requirements, but in many instances, users should be able to run two or more lower powered machines at the same time.

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DuroStar DS4000S-WK Wheel Kit for DS4000S
  • Fits DuroStar DS4000S
  • 2 Never flat tires
  • Convenient center pull handle

As with any generator, the DuroStar will require regular maintenance. The more you use this generator, the more often it will need things like oil changes, but if you use it frequently, you may not need to drain the remaining gas from it each time.

Oil changes and removing unused gas is easy with removable plugs conveniently located in the reservoirs. By removing these plugs, you can quickly drain the fluids into another container for easy storage or disposal.

The manual that comes with the generator will also detail regular maintenance that will need to be performed for the motor to run its best for prolonged periods of time. There are also recommendations for the kind of gas and oil that should be used to get the best overall performance and runtime.

While the oil and gas should be very easy to find, it’s important to note that following the maintenance recommended in the manual is crucial if you intend to use this unit frequently. If you plan to put this unit in storage for a prolonged period, you'll also want to follow the guidelines in the manual carefully.

Leaving gas or oil in the generator for extended periods can damage some of the internal components and can also damage the engine to the point that it will need repair to run again.

You may also need to replace spark plugs and air filters after each time you reach 200 hours of use since the last time they were changed. You'll also want to start your generator at least once every 30 days to ensure that internal components stay adequately lubricated.

If you follow all of the guidelines set in the manual, your generator should run smoothly. However, if you are still experiencing issues, you’ll want to contact the DuroStar customer service for assistance. Their customer service is well known for being helpful and professional when assisting buyers with their units.

What Makes DuroStar DS4000S Unique

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The DuroStar comes with a handy fuel gauge that allows users to see how much gas is remaining to better calculate the remaining run time on a single tank of gas. This unit also features a low oil shutoff feature that protects the engine from seizing up and damaging the engine should there be a shortage of oil.

The fully featured power panel has an oil warning light, a circuit breaker, a voltmeter, and several power outlets which makes fully utilizing this generator easy. Users can see how many volts are being used, and the circuit breaker helps prevent unnecessary damage to the unit during power surges, or power fluctuations.

This unit also features enhanced noise muffling with the muffler system that is attached to the motor. This muffler combined with the specialized motor mounts brings the overall noise level of this unit down to 69 decibels during operation.

Another component that makes the DuroStar unique is the add-on kits that provide optional wheels, stabilizing feet, and a handle for convenient positioning. Due to the weight of this generator, you won't want to move it often, but the optional hardware can make moving it much more comfortable.


The DuroStar retails for $$ on Amazon, and the optional wheel and handle kit runs about $. Other comparable models range in price from $170-$500. The cost of similar generators fluctuates depending on what other features are included, how they are powered, their weight, overall dimensions, and their wattage output.

A more expensive price tag doesn’t mean that everything about the generator will be better, but the DuroStar has many of the features found in the higher priced models. This generator is intended to be a workhorse for rugged situations that demand reliability and the quality and features of this unit reflect that intent.

If you are willing to spend more, it is possible to get units that have a higher overall wattage, electric start, smaller dimensions, quieter motors, and overall more power. However, this model dutifully serves some of the most common use cases people buy generators for and is priced affordably.

Public Perception (Other DuroStar Generator Reviews)

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DuroStar has a well-established reputation for building quality generators, and they are honest about the limitations, features, and specifications of their products. Their realistic details about their products offer buyers the opportunity to better understand their purchase and how the generator will perform in their specific situation.

This honesty has gained DuroStar high ratings for its generators online, as individuals are better able to consider their needs and how they can meet those needs with specific models being offered. This particular DuroStar generator is marketed as a workhorse, and the company is very forthcoming about the features, weight, and other metrics that matter most.

How It Compares

The DuroStar generator is most similar to models offered by WEN, and Goplus, but at a slightly lower price point. While these brands provide comparable wattage, weight, and control panel features, the WEN model comes with a build in handle and wheels. The Goplus and DuroStar are both EPA approved and feature a manual pull start.

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When comparing these models, it's also important to remember that they are all gas powered, and their overall size is approximately the same. Regardless of their size, they are also roughly the same weight and use the same basic steel structure that is used for mounting all of the components.

For all of these comparable models, the online reviews are similar with several hundred reviews amounting to an overall rating of 4/5 stars or higher. Buyers are very pleased with the overall performance of the DuroStar for the slightly lower price and appreciate that there are additional accessories available as they are needed.

What We Think

The DuroStar generator is the perfect choice for someone looking for a versatile and affordable generator that is both durable and of sound quality. The option to add on wheels and a handle is also great for those who plan to use it more often and saves money for those who plan to use this unit only on occasion.

Overall, this product has very sound reviews, and several buyers have used it for extended periods without complaint. The affordable price also includes several features such as a well- developed control panel with helpful shut-offs that prevent damage to the generator itself.

This unit is not CARB- compliant which will only affect buyers in California, but it does include a 1-year warranty which is plenty of time to use the unit and see how it performs. The company is very forthcoming about the limitations and ways that this unit excels and their customer service is professional and helpful with practical inquiries.

Where this generator sets itself apart from the competition is in overall value. At approximately 11 watts of electricity produced for each dollar in cost, this generator easily tops the list of many generator comparison guides.

You wouldn’t want to use this generator to power electronics that are much more sensitive to smaller fluctuations in power, but this highly reliable unit will run quietly compared to other models at similar prices which is a great feature when it comes to generators which are known for being loud.

Coupons and Deals

The best time to pick up a generator might be in the spring when big box stores are having deals or other holidays such as Black Friday. You may also be able to find this generator listed on Amazon as the “deal of the day” or on other online retailers’ sites that frequently host discounted sales.

If you choose to purchase this unit on Amazon, you may be able to take advantage of their offer to get an Store Card which could get you up to a $40 discount off the purchase of this item.

Unfortunately, this deal is a one-time only option, and you might get more of a discount waiting for a holiday such as Memorial Day, Labor Day, or Independence Day and shopping the sales found at big box stores.

There are also factory outlet websites that carry DuroStar products at a discount. Although this specific product may not be listed there, they have a rotating selection of products and sometimes offer free shipping. Before purchasing, you’ll want to ensure that the warranty still stands and that these products haven’t been previously used and refurbished.