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This product was discontinued. For your convenience, we decided to leave this page up.
If you were looking to purchase it, you may want to have a look at the Honda EG4000CL, which has similar specs.
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Description
Zoom on the Honda EM4000SX
In summary, the Honda EM4000SX is a portable generator especially useful for:
- RV travellers looking for even more independence
- People occasionally participating in outdoor fairs, festivals or events
- Amateur DIY lovers
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Professionals in need of safely powering high-intensity work or lighting equipment
In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device, along with its emission compliance information.
Power & Run Time
The Honda EM4000SX
The Honda EM4000SX's design includes a gasoline-fueled 270 cc Honda iGX270 OHV 4-stroke engine. With a 120/240V output, it gives a running wattage of 3500W and also a peak wattage of 4000W (and even up to 5000 W thanks to the iAVR technology).
The generator is rated for a noise of 61 dBA (just slightly more noisy than a normal conversation). Its starting mechanisms include a simple traditional pull-start mechanism and a convenient and easy-to-use electric starter (battery included). The EM4000SX can also be remotely started, offering further convenience (separate purchase).
The EM4000SX can operate for around 16 hours at 50% load with a full tank (fuel consumption around 0.39 GPH), due to its fuel capacity of 6.2 gallons.
Outlets
The control panel features the upcoming 6 AC outlets:
Additionally, it features 1 DC outlet: there's a 12V 8A output with which you may charge your batteries with ease.
While this Honda generator is not RV Ready, its L5-30R receptacle can be used for a simple RV connection with an L5-30P to TT-30R adaptor.
Portability
The Honda EM4000SX has the following dimensions: L41.1 x W27.8 x H28.3 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.
Even though this device may be technically portable (as in movable), manipulation and transportation without special equipment can be a challenge, as it weighs 204 pounds. Nevertheless, it can still be moved quite conveniently with the help of its wheel kit and its folding handle, once it is placed on the ground.
Features
The EM4000SX's control panel
Thanks to a built-in fuel gauge, the generator allows you to quickly, conveniently and easily check the gas level at a glance.
From a security standpoint, the product offers an automatic low oil shut-off (Oil Alert®) and an overload protection (circuit breaker), allowing you to use it with a peace of mind.
Besides the features previously mentioned, accessory-wise, the Honda EM4000SX comes with the usual documentation and owner's manual (opens in a new tab) needed to get you promptly started. An official storage cover is available, as a separate purchase.
iAVR Technology
Honda’s iAVR (opens in a new tab) (Intelligent Automatic Voltage Regulation) reduces voltage fluctuation by up to 50% over current AVR systems.
In conventional generators, when a load is applied, the engine’s rpm drops, which causes the voltage and frequency to drop as well, until the rpm recovers.
iAVR is a combination of the DAVR (opens in a new tab) technology and the iGX (opens in a new tab) engine technology, which serves to provide advanced and instantaneous engine rpm control when a load is applied.
As a result, voltage and frequency are precisely regulated and the EM4000SX is able to produce a starting wattage above the maximum rating, for up to 10 seconds. Therefore, thanks to iAVR, the EM4000SX is able to “overclock” itself above its 4000 starting watts and provide up to 5000 W.
Emissions
The Honda EM4000SX is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.
Moreover, it features a spark arrestor, making it usable in forested areas.
Product Videos
The Honda EM4000SX versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Honda EM4000SX compare to generators of similar power (between 3000 and 4000 W).
- With its weight of 204 lbs, the Honda EM4000SX is one of the heavier generators in the 3000-4000 rated wattage category. In terms of weight, one of the champions in their power range is the Genmax GM3300i, standing at just 47.4 lbs.
- Since this generator is rated for a lowest possible noise of 61 dBA, it can be considered as one of the more quiet of the products generating similar power. If noise emissions are one of your priorities, you may be interested in the Cat INV4000E, one of the least noisy generators similarly powerful as this one, rated for 51 dBA.
- As the EM4000SX features an autonomy of around 16 hours at 50% load, it has one of the highest run times in comparison to the other generators of its power range.
- Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. In fact, this generator is not among the most fuel efficient, within the aforementioned wattage range : its estimated gasoline consumption at 50% load is around 0.39 GPH. If you wish to acquire one of the most gasoline efficient products of this power range, the Westinghouse iGen4200, with a fuel consumption of 0.17 GPH could be in your good books.
The bottom line
- GFCI Outlets
- Remote start capable
- iAVR technology
- Quiet for its power (61 dBA)
- High run time
- No data center
- On the heavy side (204 lbs)
- Low fuel efficiency
Features and Specifications
| Inverter | No |
|---|---|
| Portable | Yes |
| Parallel capable | No |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 270 cc Honda iGX270 OHV 4-stroke |
| Starting system | Recoil, Electric, Remote |
| Voltage | AC: 120/240V 60 Hz, DC: 12V |
|---|---|
| Running watts | 3500 W |
| Starting watts | 4000 W |
| Running amps (@120/240V) | 29.2/14.6 amps |
| Peak amps (@120/240V) | 33.3/16.7 amps |
| Run time @50% load | 16 h |
| Run time @25% load | Unknown |
| GFCI outlets | Yes |
|---|---|
| Covered outlets | No |
| Automatic Voltage Regulation | iAVR |
| AC outlets |
|
| DC outlets | 1x 12V 8A output |
| Data center | No |
| Indicators | No |
| Fuel tank | 6.2 gal |
| Fuel gauge | Yes |
| Weight | 204 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 41.1 x 27.8 x 28.3 in |
| Noise (lower limit) | 61 dBA |
| THD | Unknown |
| Compliance | CARB, EPA |
| Security | Low oil and overload protection |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Battery and wheel kit |
| Warranty | 3 years |
| Series | Deluxe |
| Other model numbers | EM4000SXAT1 |
| UPC | 786102005265 |
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
About Honda
Founded in 1948, the Japanese Honda Motor Company has gained notoriety for consistently producing top quality engines, motor-powered vehicles and devices. Over the years, the company has gained a strong reputation in the motorcycle, automobile, but also power tool industry. Honda’s power tool division has been producing power tools since 1953, including tillers, mowers, blowers, sprayers and of course, power generators. While the company has expanded globally and moved a majority of its production out of Japan into other Asian countries, Honda is to this day known as a legend among the generator manufacturers.
Warranty Information
The Honda EM4000SX is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Honda generators, please consult Honda's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-770-497-6400.
Questions & Answers
What can it power?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | Sump pump (1/2 hp) | 1050 | 2150 |
| Furnace fan (1/2 hp) | 875 | 2350 | |
| Refrigerator (energy star) | 192 | 1192 | |
| Blender | 400 | 850 | |
| Total | 2517 W | 3992 W | |
| For camping | Radiant heater | 1300 | 1300 |
| RV refrigerator | 180 | 600 | |
| RV AC (11,000 BTU) | 1010 | 1600 | |
| Slow cooker | 270 | 270 | |
| Total | 2760 W | 3350 W | |
| For work | Grinder | 1400 | 2500 |
| Demolition hammer | 1260 | 1260 | |
| Bug zapper | 80 | 80 | |
| Total | 2740 W | 3840 W |
What is the difference between the EM4000S, the EM4000SX and the EM4000SXAT1?
These model numbers refer to the same unit, but simply include more or less information regarding its specs, production batch, etc. Read how Honda name their generators.
Couldn't find the right answer for you? Ask your own question.
