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Yamaha EF2000iS 2,000 Watt 79cc OHV 4-Stroke Gas Powered Portable Inverter Generator (CARB Compliant) Review
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 Compact and ergonomic, the EF2000iS is easy to store and transport. View larger. |
 TwinTech technology allows you to hook up two units for added output. View larger. |
In simpler terms, this means that you'll be able to confidently power delicate machinery without having to worry about the damage caused by unrefined energy. An electrical overload breaker is also included, to prevent generator damage in case of an unexpected overload.
Smart Technologies for Optimal Fuel Efficiency
The EF2000iS is exceptionally fuel efficient, able to run for up to 10.5 hours without refueling when in Economy mode. Its OHV engine runs reliably and dissipates heat efficiently, allowing for both a long life and optimal fuel consumption.
With its Smart Throttle Load feature, the generator is able to dynamically adjust engine speed depending on output, resulting in greater overall fuel efficiency. The generator also features an exclusive dual coil alternator stator, which lowers engine speed and reduces total fuel consumption.
Ergonomic, User-Friendly Design
Weighing 44 pounds, the generator is ultra-portable and features an easy-to-carry design. It has a convenient, centralized control panel, which allows you to easily access all of the generator's features at the push of a button. It also starts up responsively due to its auto-decompression system, which reduces compression and makes start-up less difficult.
For added convenience, the EF2000iS is able to recharge batteries with its 8A12V DC output, making it ideal for RV, auto, and boat owners. You can even hook up two EF2000iS units for added output, thanks to TwinTech technology. And you won't have to worry about engine damage due to low oil levels: an oil-watch warning system constantly monitors oil levels and lets you know when an oil change is needed.
Noise Reduction for Quiet Operation
The EF2000iS uses noise reduction technologies to ensure the quietest operation possible. Featuring a special sound-blocking design, the generator has noise-absorbing glass wool construction, which helps dampen noise even during heavy operation. Along with the EF2000iS' super-quiet muffler and vibration-isolating feet, it helps keep noise to a minimum.
The EF2000iS is backed by a two-year warranty.
What's in the Box
Gas-powered generator
 The EF2000iS has the EPA's longest engine emission life rating. View larger. |  The EF2000iS recharges 12-volt batteries, making it ideal for boat, RV, and auto owners. View larger. |
Powerful, portable, and efficient, the Yamaha EF2000iS Gas-Powered Portable Inverter delivers maximum electrical output without sacrificing portability. Thanks to its innovative inverter system, the generator is able to generate up to 2,000 watts of clean AC power. It can run up to 10.5 hours continuously without refueling and uses premium technologies to maximize fuel efficiency.
The EF2000iS is backed by a three-year warranty.
Generac 5734 GP15000E 22,500 Watt 992cc OHV Portable Gas Powered Generator With Electric Start Review
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 Portable gas-powered generators deliver power when you need it, where you need it--from outdoor parties to construction sites. View larger. |
 Circuit breaker protected outlets guard against circuit overload for reliable performance. View larger. |
 The hardened steel-tube cradle, convenient handles, and wheel kit ensure durability and portability. View larger. |
 Generac's OHVI® engine is designed specifically for generators, and it lasts three to four times longer than competitive engines. View full diagram. |
 Determine your requirements for a portable generator: click here to view wattage charts. |
A Durable Power Supply Wherever You Need It
The Generac 15,000-Watt Generator with Electric Start is an ideal portable generator to have at home, on the job site, or wherever you need power. Its compact frame--48.5 x 31 x 39.5 inches (LxWxH)--is fitted with lifting eye handles and pneumatic, all-terrain wheels for easy portability. And with its hardened steel-tube cradle, this rugged generator holds up well for frequent travel, allowing you to look forward to years of operation. Plus, this model features an electric ignition for fast, easy start-up.
Thanks to its versatile design, this generator adds comfort and possibility to any situation. Use it to keep your family safe and well-equipped through unexpected blackouts or make construction jobs faster and easier.
A Low-Maintenance, High-Performance OHVI Engine
Designed specifically for generators, the Generac 15,000-Watt Generator with Electric Start's heavy-duty 992-cc OHVI (overhead valve industrial) engine boasts a host of features. An exclusive X-Torq governor maximizes the engine's performance to keep it running without stalls. And so engine components continue moving smoothly, a pressurized lubrication system sends oil directly to critical areas.
Thanks to this full-pressure lubrication system, the engine can employ an automotive-grade, spin-on oil filter that sifts out dirt and other unwanted substances. The oil filter works alongside a dual-element air filter. Together, the two keep engine performance at a maximum and maintenance at a minimum.
Plus, this generator's sturdy, 16-gallon resin tank ensures a full 10 hours of operation at a 50-percent load, letting you relax for hours of use. The automatic-idle control reduces fuel usage and noise, while the tank's built-in fuel gauge lets you monitor fuel levels at a glance. Generac even provides you with your first supply of oil.
Plenty of Wattage to Run a Full Range of Appliances
The Generac 15,000-Watt Generator with Electric Start supplies 15,000 output watts and 22,500 maximum watts (for start-up of devices). It has an A/C voltage of 120/240 and a frequency of 60 hertz.
For unexpected blackouts, this is enough wattage to run home appliances such as security systems, computers, and electric stoves, as well as air conditioning systems and sump pumps. (A manual transfer switch is required to connect to air conditioning systems.) For construction and landscaping applications, it's enough to support large devices such as lawn mowers, belt sanders, and table saws. And for camping and outdoor events, it can run portable stereos, outdoor lights, and electric grills.
(Note: All appliances should be checked for actual wattage ratings.)
Safe, Quiet Operation with Overload-Protected Outlets
If security and quiet operation are important to you in a generator, then the Generac 15,000-Watt Generator with Electric Start is an ideal choice. Its outlets (two 120-volt, two 120-volt GFCI, one 120-volt 30 Amp twist lock, one 120/240-volt 50 Amp, and one 12 VDC battery charger) are circuit-breaker protected, guarding against power overloads and allowing the generator to smoothly send power to your appliances. And the low-tone muffler means the generator runs at a comfortable noise level that easily blends into the background.
This generator is backed by a two-year limited warranty.
What's in the Box
Generac 5734 GP Series GP15000E 15,000-Watt 992-cc OHVI Portable Gas-Powered Generator with Electric Start (Non-CARB Compliant), 12VDC 365-CCA battery, first oil supply, wheel kit, maintenance kit, and manual.
| Model # | GP1800 | GP3250 | GP5000 | GP5500 | GP6500 | GP7000 | GP7000E | GP8000 | GP8000E | GP15000E | GP17500E |
| Running/starting watts | 1800/2050 | 3250/3750 | 5000/6250 | 5500/6875 | 6500/8000 | 7000/8750 | 7000/8750 | 8000/10000 | 8000/10000 | 15000/22500 | 17500/26250 |
| Fuel tank size (gallons) | 4.0 | 4.0 | 6.6 | 6.6 | 6.6 | 8.0 | 8.0 | 8.0 | 8.0 | 16.0 | 16.0 |
| Approx. run time @ 50% (hours) | 14.5 | 12.5 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 |
| Electric start (battery included) | Yes | Yes | Yes | Yes | |||||||
| Dimensions (L x W x H - inches) | 23.5 x 17 x 17.5 | 25 x 21 x 19.5 | 33.5 x 26.5 x 27.5 | 33.5 x 26.5 x 27.5 | 33.5 x 26.5 x 27.5 | 33.5 x 26.5 x 27.5 | 33.5 x 26.5 x 27.5 | 33.5 x 26.5 x 27.5 | 33.5 x 26.5 x 27.5 | 48.5 x 31 x 39.5 | 48.5 x 31 x 39.5 |
| Shipping weight (pounds) | 79 | 91 | 167 | 167 | 172 | 177 | 182 | 187 | 192 | 363 | 390 |
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