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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.
You can also try to find it second hand on eBay, by clicking on the button below.
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Description
Zoom on the Honda EM4000SX
In a nutshell, the Honda EM4000SX is a portable generator mostly geared towards:
- RV travellers wishing to enhance their freedom and nomad lifestyle
- Occasional participants of outdoor events, competitions, concerts and festivals
- DIYers who wish to improve their efficiency with tools
- Homeowners in need of an emergency backup power for their essentials
- Professionals who want to be able to deliver results, even during a power failure
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 is powered by a 270 cc Honda iGX270 OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 3500W as well as a peak wattage of 4000W (and even up to 5000 W thanks to the iAVR technology).
With a noise rating of 61 dBA (just slightly more noisy than background music), the generator features a conventional pull-start mechanism, but also a simple and elegant electric starter (battery included). Moreover, to offer you even more convenience, the EM4000SX can also be remotely started (separate purchase).
With a full tank, the EM4000SX can operate for around 16 hours at 50% load (fuel consumption around 0.39 GPH), thanks to its fuel capacity of 6.2 gallons.
Outlets
The control panel provides the upcoming 6 AC outlets:
Additionally, it features 1 DC outlet: there's a 12V 8A output allowing you to easily charge your batteries.
This Honda generator isn't quite RV Ready, but it features an L5-30R receptacle, allowing a simple RV connection through an L5-30P to TT-30R adaptor.
Portability
The dimensions of the Honda EM4000SX, which are L41.1 x W27.8 x H28.3 in, and its typical, open frame design provides stability and enables 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, thanks to its wheel kit and its folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.
Features
The EM4000SX's control panel
The generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.
Security-wise, this product benefits from an automatic low oil shut-off (Oil Alert®) and an overload protection (circuit breaker), which gives you a complete peace of mind when using it.
As for its accessories, apart from the previously mentioned features, the Honda EM4000SX also comes with the basic documentation and an owner's manual (opens in a new tab), allowing you to start it right away. 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. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor, which makes it suitable for use 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).
- A weight of 204 lbs makes the Honda EM4000SX one of the heavier devices in the 3000-4000 rated wattage range. If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM3300i, with a dry weight of just 47.4 pounds.
- With a lowest noise rating of 61 dBA, the generator is one of the more quiet of the generators of 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.
- Thanks to an impressive running time of around 16 hours at 50% load, the EM4000SX benefits from one of the highest run times among generators of a similar output
- The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. Standing at an estimated 0.39 GPH (gallon per hour) at a 50% load, this generator is somewhat average in this area compared to other devices, within the aforementioned wattage range. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Westinghouse iGen4200. With a fuel consumption of as little as 0.17 GPH, it is one of the most efficient generators currently on the market.
The bottom line
- GFCI Outlets
- Remote start capable
- iAVR technology
- Quiet for its power (61 dBA)
- High run time
- Decent fuel efficiency
- No data center
- On the heavy side (204 lbs)
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 | Microwave (1000 watts) | 1500 | 1500 |
| Sump pump (1/2 hp) | 1050 | 2150 | |
| Refrigerator (energy star) | 192 | 1192 | |
| Set of 5 LED light bulbs | 55 | 55 | |
| Total | 2797 W | 3897 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Electric fry pan | 1500 | 1500 | |
| Radio | 100 | 100 | |
| Total | 2790 W | 3380 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.
