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Reviews Categories | Emergency/Portable Power: generators, solar, wind, thermal, etc | Yamaha EF1000is Help

Reviews Summary for Yamaha EF1000is
Yamaha EF1000is Reviews: 1 Average rating: 4.0/5 MSRP: $799
Description: A compact, portable 27lb. inverter generator designed to supply high-quality, clean and quiet power. Unit features Pulse Width Modulation (PWM) so Voltage stability is within 1%, and Frequency stability is 0.1 HZ, with a sine wave as clean or cleaner than commercial power. Fuel capacity is .66 gallons. 12-hour runtime at 1/4 load. 900W rated. 47-57dBA.
Product is in production.
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LNXAUTHOR Rating: 4/5 Nov 9, 2004 12:59 Send this review to a friend
small, quiet, economical  Time owned: 0 to 3 months
You can find these little buggers for about $600+change online right now. Yamaha must be cleaning up, as Honda seems to be oversold and out of stock right now on its line of small and quiet generators.

Included in the box with the generator is a manual, DC cord w/medium-sized hooded alligator clips, small wrench, spark plug socket, mini oil pan, and 1 qt. of SAE10W30. You'll only need 10 oz. of oil to fill the generator and just a tad over two quarts of 87 octane fuel for the tank of this 4-stroke generator. There's a fuel shutoff switch, DC reset, economy operation button, on/off switch, two AC outlets, and a DC charging outlet.

What's really freaky is how quiet this generator runs! After a minute of warmup, if you switch on the "Economy Control" switch, the sound drops dramatically (genny runs slower). You can stand next to this generator and have a conversation in a normal voice!

I put my DVM onto the unit and measured 120.1V AC. For the DC output, I found 12V. This may be a problem for those of you with rigs that like 13.8V (although you can hook up a power supply or run the rig off a battery charging via the generator). I did not measure DC output under load, but this generator will make a pot of coffee and run my 20W rigs on the picnic table or off the truck's lift gate, so I'm happy. YMMV.

Unit was purchased for outdoor ham radio fun and as a backup for a CPAP machine during power outages (gotta get my sleep).

Two year warranty via Yamaha dealers.

This unit was just a hair less expensive than my 5.5KW Troy Bilt, but it weighs a lot less and generates power needed for medical and amateur radio gear. (BTW, Yamaha has just introduced a new line of 'clean power,' 150lb. and quiet gennys in the 3-3.5KW range)

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