Honda 4000 Generator Buyer’s Guide is an independent review business. I am not affiliated with any manufacturers and do not accept paid reviews. When you buy through my links, I may earn a commission which helps me purchase more generators for testing. - Scott Krager

Last Updated on October 18, 2022 by Manager Access

Are you combing the market for an economical and dependable portable generator? If you’ve been surfing the internet for a while, you’ve probably seen some Honda power equipment pop up once or twice with some quality options.

honda 4000 generator review

Because of this, it’s a pretty safe bet that you’ve stumbled across the Honda EG4000. For good reason, too; the EG4000 is one of the best Honda portable generators available. It’s especially useful if:

  • You need to be able to deliver professional results consistently, even in the event of a power failure
  • You are a homeowner that needs to be able to keep your appliances, heating systems, and lighting no matter your power situation
  • You have hobbies, like handcrafting, that require power away from traditional sources
  • You’re taking part in an outdoor event like a festival or concert
  • You want to enhance your upcoming RV trip

When depending on a backup generator as your last option during a power outage, you must have a quality generator to depend on. After all, in the event of an emergency, the last thing you want to be worrying about is keeping your refrigerator running.

three transmission towers

The Honda EG4000 has been on the market for a few months ago, so it’s time to write a review and take a deep dive into this Honda generator. In this guide, we’ll examine some functions and features of the Honda EG4000, including what it can power and information on the 3 year commercial or residential warranty that comes with it.


set of programming codes

The Honda EG4000 is an open frame portable generator that’s both lightweight and dependable. Before we get into the unique features like DAVR technology and the carbon monoxide detection system, let’s look at the specs:

  • Receptacles: 20A 125/250V Locking Plug, 30A 125V Locking Plug, 20A 125V GFCI Duplex (2)
  • Wattage: 4000 Watt 120/240V
  • Engine: Honda GX270
  • Displacement: 270 cc
  • AC Output: 3500w rated (29. 2/ 14.6A), 120 240V 4000w max (33 3/ 16.7A)
  • Fuel Tank Capacity: 6.3 Gallons
  • Dimensions (L x W x H): 26.8 inches x 20.9 inches x 22.5 inches
  • Dry Weight: 146.4 pounds
  • Noise Level: 67 dB (A) @ rated load; 66 dB (A) @ 50% load
  • Run Time per Tankful: 10.1 hr @ rated load, 14.8 hr @ 50% load
  • Starting System: Recoil only
  • Fuel Gauge: Yes
  • Commercial Warranty: 3 years
  • Residential Warranty: 3 years

Functions and Features

big speaker of a radio

The Honda EG4000 is packed full of unique functions and features, each one making this portable generator fit for many powering situations. Let’s take an in-depth look at each of these so you can gauge the power of this machine.


DAVR, or digital automatic voltage regulation, is an advanced technology that is designed specifically for consistent power and enhancing the performance of the Honda EG4000. This voltage regulation can hold the voltage stability within a +/- 1% range during operation, making for much more consistent power.


CO-MINDER is an advanced carbon monoxide detection system. Essentially, this means that CO levels will be constantly monitored since these fumes are dangerous to breathe in. If the CO levels are high enough, the Honda generator will automatically shut down for user safety.

120/ 240V Selector Switch

As I’ve mentioned above, the Honda EG4000 has three means of output. This selector switch allows you to choose between using both the 240 and 120 volts, or 120 volts only. This switch allows for the total output of the generator to be available through any of the 120-volt outlets. This adds more versatility to the generator since the switch enables you to power units that have larger wattage requirements. This also means more usable power.

Honda Oil Alert

The Honda EG4000 is protected by Honda Oil Alert. This protects the generator when low oil levels are detected by shutting off the engine.

Long Run Time

The run time for the EG4000 is an impressive 14.8 hours @ 50% load (6.3 gallons). This keeps your generator running all day long no matter what.

Durable Frame

This portable generator features a one-piece welded frame, designed specifically to help protect the generator. This is especially useful in situations where you are using this generator outside, or during an emergency where things can quickly become chaotic.

Spark Arrestor/Muffler

The EG4000 features a USDA-qualified spark arrestor/muffler.

Fantastic Warranty

Last, but certainly not least, who can forget the 3 years commercial warranty?

With the Honda EG4000, you don’t need to worry about a generator that isn’t safe, dependable, or practical. Each feature of the EG4000 addresses most concerns that you’d have with purchasing a new generator. This Honda generator is truly an asset no matter what you’re using it for.

What Can it Power?

a hand fixing something at the back of a server

With all of these great features being explained, let’s get into what this device can power.

Common Uses

Here are just some of the common applications you can use your Honda generator for:

  • High-pressure washer (1 hp)
  • Drills
  • Concreate vibrator
  • Circular saw (Heavy Duty, 7 1/4 inches)
  • Bench grinder (8 inches)
  • Air compressor (1/2 hp)
  • Incandescent lights
  • Coffee maker
  • Hairdryer
  • TV/DVD player
  • Microwave oven
  • Refrigerator or Freezer (Energy Star brand)


This Honda generator boasts an impressive 6 AC outlets: one 20A 125/250V Locking Plug, one 30A 125V Locking Plug and two 20A 125V GFCI Duplex.

While this specific Honda model can’t power an entire RV, there is an L5-30R receptacle that can connect through an L5-30P to a TT-30R adaptor.

Long Run Time & Usable Power

This Honda generator can run for an impressive amount of time. The 270 cc Honda engine is powered by gasoline, complete with an easy to read fuel gauge. Starting up this engine isn’t difficult, either, since it uses the usual pull-start method.

This generator has an output of 120/240V, which provides a peak wattage of 4000w and a running wattage of 3500w.

With all of those numbers accounted for, this means that at a full fuel capacity of 6.3 gallons, the EG4000 can run for about 15.7 hours at only 50% rated load. Helpful? Yes, especially if you find yourself without power for most of the day or at a remote job site for an extended period.


This Honda portable generator boasts an impressive residential or commercial warranty, 3 years to be exact. This will allow you plenty of time to try out your generator to see if the EG4000 is the best model for you and your specific needs. With this warranty 3 years commercial, you’ll also be able to determine if this Honda generator can stand the test of time. While most customer reviews can attest to this fact, it’s comforting to know that if anything goes wrong you always have this warranty to fall back on.

Customer Ratings & Reviews

meeting between a superior and an employee who is taking down notes

All of the reviews posted on the Honda website for the EG4000 are incredibly positive, with an overall score of 4. People found that ease of use, features, and overall quality is top-notch for this generator. Helpful? Yes.

Reviews posted by Honda customers consistently mention the following things:

  • The security of the 3 years commercial warranty
  • The ease of the starting system recoil
  • The durability of the generator
  • Impressive run time, even at 50% rated load

It’s also common for customers to write a review describing what they used their Honda generators for, with examples including anything from an air conditioner to the lighting during a power outage. I find a review helpful when customers can provide their own experience with the product, so seeing an answer helpful from months ago and more recently is a testament to how well this generator operates.

Pros & Cons

Like anything in life, the Honda EG4000 comes with both pros and cons. Let’s review all aspects, negative and positive, of this generator.


  • GFCI protection
  • Great features like CO-MINDER and DAVR
  • High capacity fuel tank complete with fuel gauge
  • Able to power units with larger wattage due to the new automatic voltage regulation technology, which can hold the voltage stability within a +/- 1 range
  • The wattage of 4000 Watt 120/240V
  • AC Output of 3500w rated (29. 2/ 14.6A), output 120 240V 4000w max (33 3/ 16.7A)
  • Can run for 15.7 hours
  • Durable thanks to the welded frame
  • Warranty, 3 years commercial or residential
  • 6 AC outlets for maximum use
  • Good price


  • While customer reviews are impressive, the most recent review was left months ago
  • There is no electric start, only the traditional recoil start. This may make the start-up difficult for people who are not physically strong
  • The noise level is average at 67 dB (A)
  • On the heavier side at 146 pounds

Frequently Asked Questions

two RVs parked on a forest

Since the Honda EG4000 is a 4000-watt generator, it will be helpful to review some common questions that customers might have about a generator with this specific capacity.

Is a 4000 Watt Generator Good?

To make this answer helpful, it would necessary to know what the customer means by “good.” However, with what we know about this Honda generator, it’s a safe bet to say that they can count on this model is a good one. You can use it for up to 15 hours of continuous power for a plethora of occasions; a trip in the RV, an outdoor venue, a remote workshop, or even during a power outage at work or home. The output 120 /240V is also useful for plugging in multiple appliances at once to maximize the generator’s benefit.

Is a 4000 Watt Generator Enough for RV?

While this Honda 4000 watt generator is a great addition to any RV trip, it’s not enough to fully power an entire RV. This doesn’t mean that it can’t add to your trip, though. The EG4000 has an adaptor plug that you can attach to your RV to power additional appliances as you see fit, so you can bring along some additional things like an air conditioner unit, a space heater, or a speaker system to enhance your vacation.

Customer Support Company Info

It’s also worth mentioning that Honda has great customer support, which is always useful when purchasing some equipment. This is especially useful if you’re not familiar with generators or operating machinery in general.

Part of what makes this review helpful is that as customers, Honda connect with us in a way that’s helpful and professional. The company connect with us, shopping tools honda products customer support providing helpful insight into certain products and making sure that you choose what’s best for you as a customer.

Helpful? Yes. The company info we use can be found on the Honda website, with the Honda products customer support being your best option.

Verdict: Should You Buy It?

person holding a folded dollar bill

You really can’t go wrong price-wise with this portable generator. Like all Honda power equipment, it’s powerful and dependable. You’ll be sure to get good use out of this generator no matter what you’re using it for: as a backup during an emergency power outage, a camping trip, or even for work. With an impressive output 120/240V, the EG4000 delivers exactly what it claims to as a versatile and powerful generator.

And, if after reviewing the positive customer comments you’re still apprehensive, you can’t argue with an impressive warranty: 3 years commercial, and a residential warranty 3 years.

If you’ve been looking for an affordable, powerful portable generator, then the final verdict is certainly a yes.

2020 American Honda Motor Co., Inc. All information contained herein applies to U .S. products only. Info: We use cookies to improve your experience on this site and show you personalized advertising. To find out more, read our cookie policy.

Honda 4000






Ease of Use






Leave a Reply

Your email address will not be published.