Bought a cabin in the Sierra last year and after numerous outages, one over 24 hours long, I decided to get a generator. Question was whether I buy a stand by whole house generator or a portable generator. My neighbors convinced me that a portable generator would be the better option. After some research and recommendations I decided the Yamaha isde6300 from National Supply was the way to go.
Their website indicated that if the delivery address was not the same as the billing address I should expect a confirmation phone call which I got soon after I completed the order. The customer rep was professional, friendly, and apologetic about having to make the call explaining that this was to try to avoid fraudulent purchases. No problem there but a problem arose with the delivery cost. Long story short is that National Supply made it work for everyone. The delivery company Nation Supply works with was very efficient with accommodating my schedule and the delivery guy dropped off generator where I asked him to.
The isde 6300 is more than I expected. I was hoping the generator would power up the essentials (fridge, central heating, electric water heater, a few lights and plugs). When I used it the first time, I was able to run the house normally with the power load meter at 2 of 10. I did not run my electric dryer but I think the generator could have handled that too. It’s also very quiet. My wife has very acute hearing and she could barely hear the generator inside the house.
A few things to keep in mind: 1) it’s on the heavy side so maneuvering it is not easy, 2) you will need a flexible funnel to fill the generator with oil, and 3) you need a charger to top off the battery.
My only critique would be that I wished National Supply also sold generator cables for attaching the generator to the power inlet box. Having to buy it from another source is not onerous but the convenience of one stop shopping would be nice.

Bought to use in camper and it runs the air condition just fine

This is the perfect maintenance kit for the Yamaha generator. The price was reasonable as well as the shipping cost and the shipping speed was fast. The kit came well packaged and I plan on buying here again.

Excellent generator. My dad has had one for years that we use at the race track. I finally got my own after a tornado took my power out for 5 days. Can't say enough about the quietness, fuel efficiency, & power that this generator provides all at an affordable price.

Fast delivery and great price from National Supply. This is our 4th Yamaha .Not because they're good but because generator box was built for this unit so we have to keep using them or have a new box built ($2200).

Battery is 5 star rating.

Great communication, shipping was fast, and generator showed up in perfect condition. Haven't had to actually use it yet. Started on 2nd pull. Stop shopping, you found your best place to buy from. NATIONAL SUPPLY

Bought one about 4 years ago to power the camper. It's every bit as quite as a Honda. The only thing that could make it better in remote start. I bought an aftermarket kit and now it's perfect. Took me (first time doing this) about 2 hours to install using the supplied video. Installed the generator in the back of the pickup and rigged up so I could plug into it while traveling. Now I can start or stop the generator either in the pickup or the camper or anywhere within range. Works perfect and can't hear the generator at all from inside the camper. Yes, the truck needs to be withing range of the cord but that has never been a problem. Yet!

Battery worked just fine. Started up my generator first try. No issues.

Very happy with my recent purchase of the Yamaha generator. Works as it should. Ran my a/c unit when hooked the two generators together .

Still in the box . I didn't unpack it yet 'cause I'm moving down to Florida.
I just rely on Yamaha excellent reliability, and trust their reputation so I'm going to take a chance on warranty time.

My second one of these. Solid. Quiet. Reliable. Yamaha doesn't make junk. There is a reason these are more expensive then other generators in this class. Peace of mind that it will work every time. If you maintain it and stay in the usage guidelines you will get every penny's worth of your investment back. It may outlast you.

Generator works as it should. Have only used it for thirty minutes or less.

Would help if they came with some operator instructions.

Best price I could find!