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Generac's model 6439 standby generator produces up to 11 kilowatts of standby power for your home during a power outage. The standby generator is a permanent installation that works with an automatic transfer switch (sold separately) to start and run without operator intervention whenever power from the electric utility is interrupted, offering 24/7 protection against power outages, even when you are away from home.
Generac standby generators leave the factory ready to run on natural gas, but convert quickly and easily to LP gas (propane) during installation. The 6439 produces a full 11,000 watts of power when running on LP gas and 10,000 watts on natural gas. Fuel consumption on any generator is directly related to the electrical load and changes continuously. At half load, the generator consumes about 1.2 gallons of LP gas per hour, or 124 cubic feet of natural gas per hour.
Generac's commitment to reliable standby power begins with its overhead valve industrial engine, the only generator engine in its class designed specifically for use in a generator. The GH-530, electronic-ignition engine turns at 3600 RPM to deliver up to 18 horsepower. The 2 year or 200 hour interval between oil, filter, and plug changes provide for extended operation during long-term power outages. The oil system is fully pressurized for superior lubrication and cylinder rigidity is improved by the cast iron spiny-lok construction for long-lasting service and performance.
The Evolution Controller by Generac monitors the utility electric service. If the service drops or sags below an acceptable level, the controller starts the generator and signals the automatic transfer switch to move the home onto generator power. When the utility service returns, the controller reverses the process, runs the generator for a cool-down period, and then shuts it down. During operation it continuously monitors and controls engine speed and regulates the voltage output for utility grade power to operate even sensitive electronics and computers.
Also featured in the controller is a programmable exercise period to keep the generator lubricated and ready for operation at all times. The smart battery charger maintains the battery charge level and notifies the homeowner of imminent battery failures. The dealer programmable 2 to 1500 second start delay prevents false starts during momentary power outages. Other features include maintenance alerts and advanced fault detection and reporting.
Mobile Link is an optional accessory that provides alerts sent as text messages to your phone, and allows you to access your generator's controller via dashboard on computers, tablets, and smart phones from any Internet connection. Basic and advanced wireless monitors (also optional) install inside your home. The basic unit provides generator status, while the advanced model allows you to test the generator, receive status alerts, and control functions such programming exercise periods.
The generator produces electricity with an advanced alternator that utilizes a revolving magnetic field and skewed stators. The design eliminates the need for brushes and provides better voltage and frequency regulation for superior quality power and greater surge capacity for starting heavy-duty motors. Better surge capacity allows air conditioner and other appliance motors to start with a momentary boost of power to get them turning.
The 6439 standby generator fits into any neighborhood with a pleasing design and a 63db noise level that is lower than most central air conditioners. The unit is 48 inches wide, 25 inches deep, and 29 inches high with an all steel enclosure that resists corrosion, even in all climates, and meets fire protection standards. The hinged lid provides easy access to generator for maintenance and locks to prevent tampering.
|Manufacturer||Generac Power Systems|
|Made In USA||Yes|
|Rated Amps||45.8 LP/41.7 NG|
|Voltage||120/240V Single Phase|
|A/C Ton Rating||3 Ton|
|Decibel Rating||63 db(A)||Features|
|Low Oil Alert||Yes|
|Mainline Breaker||50 Amps|
|Battery Requirement||Group 26R, 12V, 525 CCA|
|Mounting Pad||Composite Base Attached|
|Product Weight||407 lbs.|
|Shipping Weight||451 lbs.|
|Dimensions (Inches)||48L x 25W x 29H||Engine|
|Engine Brand||Generac OHVI V-Twin|
|Engine Size||530 cc|
|Cast Iron Sleeve||Yes|
|Cooling System||Air Cooled||Alternator|
|Auto Voltage Regulation||Yes||Fuel|
|NG Power Capacity||10kW|
|LP Power Capacity||11kW|
|NG Consumption @ Full Load||195 cu.ft/hr|
|NG Consumption @ 1/2 Load||124 cu.ft/hr|
|LP Consumption @ Full Load||1.92 gal/hr|
|LP Consumption @ 1/2 Load||1.18 gal/hr||Transfer Switch|
|Transfer Switch Model||Sold Separately|
|ATS Poles||Warranty Information|
|Consumer Warranty||5 Year Limited|
Posted by Tunisia B. on 10th Feb 2014
It came in handy when all the snow and freezing cold came all at once...
Posted by Mike B. on 14th Jan 2014
Purchased this product for a job that I was doing. Installation was easy and the costumer was very pleased with appearance of the unit and most of its performance. Definitely recommend Generac for all residential generator installations.
Posted by Videogram on 10th Nov 2013
I purchased this generator a few weeks ago. It was delivered quickly and a tracking number was given and easy to follow so I knew exactly when it was going to be delivered. The carrier called me 24 hrs before delivery and also called when the driver was a half hour away.
Product was delivered in perfect condition and unit looks real good aside of my home. Can't wait until the next power outage.
All generators include 24 hour delivery notification and residential delivery. Liftgate service is available on all air-cooled generators and some liquid cooled units – Please call for verification. Free Shipping is curbside service only. Curbside service means the freight company will deliver to your address and lower your generator to the ground. 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 and setting of the generator.
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