A Tutorial for Homeowners: Be the General Contractor for the Selection and Installation of a New Residential Standby Generator System For BeginnersLearn More
The Guardian 20 kilowatt generator from Generac Power Systems stands ready 24 hours a day to automatically supply your home with electrical power during unexpected power outages. Working with an automatic transfer switch (purchased separately), the generator starts within seconds of sensing the outage and instructs the transfer switch to move the house onto standby generator power. The 6250 Generac Guardian includes a 5-year, limited consumer warranty, guaranteeing peace of mind for years to come.
Natural gas is the typical choice for homes in neighborhoods with a municipal supply and Generac ships their generators configured to run on natural gas. They convert easily to run on LP gas during installation. The generator produces up to 18,000 watts of power running on natural gas and consumes about 205 cubic feet per hour at half load. LP gas produces up to 20,000 watts and half-load consumption runs about 2.1 gallons per hour. Fuel consumption is directly dependent on electrical load and varies continuously as the electrical load changes. Required fuel pressure to generator fuel inlet at all load ranges 3.5" - 7" water column for natural gas or 10" - 12" water column for LP gas.
Generac designed its overhead valve industrial engines specifically to meet the demands placed on an engine by a standby generator. The 999cc, 2-cylinder air-cooled engine uses solid-state electronic ignition and engine speed is kept at 3600 RPM for reliable operation and consistent power output.
A fully pressurized lubrication system plus a 200-hour maintenance interval for oil, filter, and plug changes allows the engine to operate reliably for extended periods.
The Evolution Controller manages, controls, and monitors all aspects of operation from weekly exercise periods that keep the 6250 generator ready to run, to charging and monitoring the battery and notifying the owner when it needs changing.
If utility power is interrupted, the controller detects the interruption and waits 10 seconds (dealer programmable from 2 to 1500 seconds) to guard against starting during a momentary outage. After it starts the generator engine, it signals the automatic transfer switch to move the home onto standby emergency power.
While the generator is operating, the controller regulates the voltage and engine speed to keep the voltage consistent and the AC frequency at 60 hertz for a continuous supply of utility-quality electrical power. After power is restored, the house is reconnected to the utility supply and controller runs the generator during a cool-down period, then shuts it down.
Mobile Link is an optional accessory that uses the cellular text messaging system to provide you with text message alerts to your cellular phone, and to provide you with access to the generator's controller from a web-based dashboard. Using a laptop, tablet, or smart phone, you can access your generator from anywhere you have a web connection and program maintenance schedules, view alerts, or even schedule maintenance with your service provider.
Other optional accessories include the basic wireless monitor that displays generator status inside your home, or the advanced model that includes viewing controller messages, programming exercise cycles, and sounds an audible alarm in the event of a malfunction.
Consistent and clean electrical power, even under the stresses placed on a the generating unit by the operation of large, heavy duty motors, is provided by the generator unit. The revolving magnetic field, stationary armature, and skewed stators with a brush-less design allow a long life, advanced voltage regulation, and power that exceeds the requirements of sensitive electronics while at the same time supplying the high starting currents of air-conditioner motors.
The Generac 6250 Guardian Generator was designed to fit into most suburban neighborhood settings with a pleasing appearance and a low noise level. At just 66 db, it ranks about the same or quieter as most central air units. The aluminum, epoxy painted enclosure resists corrosion, even in salty, coastal climates for a long-lasting finish. The unit ships ready for installation on a gravel bed or concrete slab and measures 48 inches wide, 25 inches deep, and 29 inches high.
20kw Generac Generator 6250 Includes:
Flexible Fuel Line Connector, Composite Mounting Pad, Base Fascia
All generators include 24 Hour Delivery Notification and Residential Curbside Delivery.
*Curbside service means the freight company will deliver to your address and lower your generator to the ground when Free Liftgate Service is included. The freight company will not back down driveways, place a generator in a building or where it is being installed. You are responsible for arranging the movement from curb.
Some restrictions apply to "Free Shipping" you may either view our Shipping Information page or contact us for details. Extra Shipping Charges include but not limited to:
Free Lift gate service is included with this generator
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