Generac 4583 Ultra Source 17,500 Watt Portable Generator ...

• 17,500 watt portable generator with enough power to run 5-ton A/C unit
• Powered by 992 cc Generac OHVI V-Twin industrial-grade engine
• 16-gallon fuel tank provides 10-hour run-time at half-load capacity
• Includes: pre-wired 16-circuit, 60-Amp indoor rated manual transfer switch, power cord, and outdoor connection box
• This item is CARB compliant

Amazon.com Product Review:
The Guardian Ultra Source 17,500 watt portable generator is one of the most powerful portable generator on the market. Powered by a 992 cc Generac OHV V-Twin Industrial Engine 992 cc industrial grade engine, a powerhouse that's renowned for its reliability, long life, impressive power and smooth, quiet operation, this generator provides enough power to start a 5-ton air conditioning unit. This engine offers the finest lubrication technology available by providing instantaneous disbursement of lubricant to all engine parts. It also features a spin-on oil filter, which is an automotive style for easy maintenance. Powered by a 992 cc Generac OHV V-Twin Industrial Engine industrial grade engine. See the product specifications. View the generator in greater detail. An easy electric start eliminates the need to pull a rope. It also offers one of the longest life expectancies in the industry, with over 3,000 hours of runtime. Guardian Ultra Source portable generators feature an electronic governor, which maintains steady speed and eliminates voltage drop when loads are applied. This, as well as the automatic voltage regulator, provides a smooth rate of electricity, which is especially important for sensitive electronic devices such as computers. For added convenience and safety when you need it most, the generator comes with a pre-wired 16-circuit, 60 Amp indoor rated manual transfer switch, power cord and outdoor connection box. This makes it easy to use it to supply power during an outage. With up to 16 selected circuits already pre-wired to the transfer switch, all that's required is to start the generator and plug it in. By flipping a single switch, the utility is locked out and the load is transferred to the generator. A large, 16-gallon capacity fuel tank give the generator a 10-hour run-time at half-load capacity, ensuring you have the power you need. An easy electric start eliminates the need to pull a rope. A simple push of the ignition and an automatic ignition timing sets the spark for easy starting and optimum operating performance. The generator runs on gasoline and meets all EPA emissions requirements. To keep your electrical equipment running, the generator includes nine outlets, including a 50 Amp high power outlet, three twistlock plugs and two GFCI protected duplex outlets. The generator also includes heavy-duty 13-inch all terrain tires, ensuring that you'll get the power to where you need it the most, a full 1.25-inch tubular frame, battery charge cables and a maintenance-free battery. The generator measures 38.5-by-30.75-by-48.5 inches (HxWxL), weighs 525 pounds and is backed with a 2-year limited warranty.

Highly Recommended!:
I have owned one of these units for 2 years now and have had to use it maybe 2 or 3 times; each time the unit starts right away and works without issues. We are on a private well system with an electric pump, so without power we are out of water (or would be, without this unit). I can run all the lights, TVs, computers, and water heater along with the microwave or oven, so between that and our woodstove we're well equipped for outages. Generac makes their own engines, so if you ever need parts, its one stop shopping for maintenance. Highly recommended!

Awsome Generator!!!!:
This thing is a monster. Runs my entire house. I have a well pump, septic, and Furnace. Didn't even 1/2 load this thing. Best generator I have used. Comes with the 60A panel box and the outside plug box. I hooked up most of my 2 story house to this thing and it works like a champ. For all this includes you can't beat the price and quality.