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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 wishing to enhance their freedom and nomad lifestyle
- People occasionally participating in sporting competitions, open-air performances and outdoor festivals
- DIYers who wish to improve their efficiency with tools
- 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
The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.
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 3,500W and also a peak wattage of 4,000W (and even up to 5,000 W thanks to the iAVR technology).
Enjoying a noise rating of 61 dBA (just slightly more noisy than background music), this generator can be started thanks to a conventional pull-start mechanism, but also to a convenient and easy-to-use electric starter (battery included). Moreover, to offer you even more convenience, the EM4000SX can also be remotely started (separate purchase).
Thanks to a fuel capacity of 6.2 gallons, the EM4000SX can operate for around 16 hours at 50% load with a full tank (fuel consumption around 0.39 GPH).
Outlets
The control panel provides the upcoming 6 AC outlets:
In addition, it provides 1 DC outlet: there's a 12V 8A output allowing you to easily charge your batteries.
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
With its dimensions of L41.1 x W27.8 x H28.3 in, the conventional, open frame design of the Honda EM4000SX offers stability and allows the generator to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.
As the generator's weight is 204 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). However, its challenging mobility is solved by its wheel kit and its folding handle, which will ease its displacement, once it is on the floor.
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.
As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off (Oil Alert®) and an overload protection (circuit breaker).
Along with the aforementioned features, from an accessory standpoint, the Honda EM4000SX's box includes the typical documentation and an owner's manual (opens in a new tab), which will help you start your generator promptly. 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 Pulsar PGD40iSCO, standing at just 46 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.
- While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. This generator is not fuel efficient compared to devices of similar output: its estimated fuel consumption stands at 0.39 GPH at a 50% load. If you wish to further improve in the area of fuel efficiency, the Pulsar PGD40iSCO, which boasts with a gas consumption of only 0.22 GPH, may be the right generator for you.
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 |
|---|---|
| Parallel capable | No |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 270 cc Honda iGX270 OHV 4-stroke |
| Starting system | Recoil, Electric, Remote |
| Warranty | 3 years |
| Voltage | AC: 120/240V 60 Hz, DC: 12V |
|---|---|
| Running watts | 3,500 W |
| Starting watts | 4,000 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 |
| 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.
