I purchased the GENMAX 4000 iA knowing that I needed to have a powerful, reliable and easy to move unit that could handle operating several things in my house if we ever had a power outage. I am glad that I made this purchase because an ice storm took out our power for 4 days. I set this unit up quickly to run temporary heat and lights, and it handled everything for the entire outage. Super quiet when it was in low idle mode and extremely strong when something demanded power. It ran about 6 Hrs. under heavy load with a full tank of gas. It started back up immediately after refueling with one pull, no problems! The weather was about 12 degrees Fahrenheit, day and night and the GENMAX was perfect! I have owned and operated many generators; this brand is incredible. If you need a small self-enclosed generator, get this product! It’s absolutely worth the money and built incredibly well. Strong, quiet and lightweight! Starting is so easy, which was important to me as well.

Awesome unit - slick design and pretty durable. so far ive used it on propane and it started up quikcly. I have not tried it on gasoline yet but i dont intend on ever really using it. I went with this model over th 11000 becuase this is almost 100lbs lighter and i need something easy to move around on occasion. Teh remote start is very cool. As long as you keep the ignition on i can fire it up through the window of my shed without having to go outside and crank it. The price is honestly unbeatbale... havent seen anything remotely close to being competitive whiile offering the same level of specs and quality genmax delivers with this product. Think this is a great buy for anyone not trying to break the bank while also not sacrificing any performance

I purchased this generator Aug 13. It was delivered in a couple of days. We have a 32' travel trailer. We used this generator in cold temperatures in the mountains outside of Beaver Utah (9400 feet elevation) and again in the mountains outside of Las Vegas where we had to run the A/C. We used our microwave and had no problems with this unit. Easy start and not very loud. We had it on low idle through out the night. We love this unit and would purchase again!

I did a lot of researching before purchasing this unit and its capabilities. You get a 240v plug that you can tie into a 50 amp power inlet box on your house, for example, but, as it sits, this generator is not going to produce 50 amps which is dictated by Ohm's Law. For instance, I'll be using mine on propane, which is 5,500 running watts, tied into my house that I won't be running 240V appliances on as they draw too much wattage (like the electric water heater, 5 ton HVAC, 2 ton HVAC, etc). Our power doesn't go out long enough, typically. But, if I decide I want to do that, I will buy a 2nd one and use their GM9000PK parallel kit and, with 2 generators, I will have 11,000 running watts to work with. I have a gas insert fireplace for heat in winter and two GE "U mount" window AC units to cool the rooms needed. Oh, and 5500 watts equates to about 23 amps of current and 11,000 watts would be...you guessed it...about 46 amps. On gas, it would be 12,000 and 50 amps. Compare this to their GM7250iED model that a competitor site sells for $1,659 before $300 coupon. Compare the specs...it's the same thing.

Pretty quiet, easy setup. Able to run my house no problem. I'd maybe give it a 4.8 but rounded up to a 5. Oil changes are easy with the included drain hose and funnel. If you're feeling spicy you can lift it yourself but it won't be too fun. Nice upgrade over a non-inverter generator. One other thing to note is that the ground and neutral are bonded but it is easy to change. If you don't know what that means, hire an electrician. Information about the neutral bond is for entertainment purposes only.

I bought one and received it 2 weeks ago. So far, so good. Easy set up. Quick start up. Idles well in both modes and relatively quiet. I modulated power up to about 15 amps and the meters seemed accurate. I plan on running an extended test with everything in the rv on and check the performance and fuel economy. the only drawback I've found so far is the remote. the main switch needs to be on for the remote start. possibly running down the battery if it's weak. I'll post my results.

GenMax Technical and Sales team were very helpful in providing guidance to help me size my generator to fit my needs at home. They were also helpful during my installation, answering my questions and that of my electrician, as well as helping with aftermarket parts like the parallel cables. I definitely recommend GenMax!

I don’t normally leave reviews but this 10000w tri fuel is a game changer. I can use it to power my house, and it’s small enough to take with me for other projects around my property. Super easy to move around and relatively quiet for an open frame. I also like that it’s an inverter so I don’t have to worry about my devices being damaged. Love the 50A port- makes it easy to connect to my house

Worked well running a couple fridges and sump pump for a few days. We had to also connect a box fan and play with diferent cords so the power surge wouldnt pop the breaker over and over. LCD screen stopped working after a few days. Kind of a pain [very fine screws] to remove side panels and access battery.

I bought this generator a little over a month ago and just finished the break-in period, which was around eight hours of runtime, and had zero issues during that time, in fact, I even noticed an improvement in engine performance during this time (there were no issues on the first start up, the improved engine performance was coming from the initial break-in). I can also give two thumbs up for Genmax‘ customer service as I unfortunately broke a piece, (which was completely my fault and not any fault of the generator build or manufacturer) and needed to contact Genmax‘ customer service to get a new part, not only did I get someone on the phone right away, I also had the part in my hand within seven days, so big props to Genmax for being on top of their customer service game.I would definitely recommend this generator as I believe it will always be there when you need it.