Message to Our Customers


Model # 6240

Internet # 204006869

14,000-Watt Automatic Standby Generator with 100-Amp 14 Circuit Transfer Switch-DISCONTINUED

This item has been discontinued.
The Home Depot no longer carries this specific product.

$3292.00 /each



Model # 6240

Internet # 204006869

Store SO SKU # 1000032986

Choose the #1 Selling Home Standby Generator Brand. Generac’s 14kW Guardian Series provides the automatic backup power you need to protect your home and family during a power outage. Connected to your existing LP or natural gas fuel supply, it kicks in within seconds of determining power loss—automatically—and runs for as long as necessary until utility power returns. Control your power. Control your life.

  • SYSTEM INCLUDES: 14 kW generator, 100 Amp transfer switch, Evolution controller, and composite mounting pad. Mobile Link and 26R battery purchased separately.
  • 24/7 GENERAC CUSTOMER CARE support 365 days a year. Power outages do not always occur during normal working hours – that is why we are standing by.
  • GENERAC’S OHVI ENGINE is purpose-built to run dependably for extended periods, delivering power when you need it most.
  • GENERAC’S EVOLUTION CONTROLLER features a dual-line, multilingual LCD display allowing for easy monitoring and management of generator functions, built-in hour meter, and external “at-a-glance” indicator lights.
  • CERTIFIED  FOR 18” INSTALLATION TO THE HOME (3rd Party-certified to NFPA standards provided it is located away from doors, windows and fresh air intakes, and unless otherwise directed by local codes.)
  • EASY INSTALLATION with an intelligent pre-wired transfer switch, re-engineered connection points, and composite mounting pad that eliminates the need for a poured concrete base (unless specified by local codes.) Get it installed 800-557-5221
  • TOOL-LESS FUEL CONVERSION allows for easy switching between natural gas and LP fuels in the field.
  • RATED FOR OPERATION IN AREAS WITH LOW NATURAL GAS PRESSURE, significantly lower than published numbers for competitive standby systems (Generac is the only manufacturer to certify operation on only 3.5” of water column.)
  • STURDY GALVANNEAL STEEL ENCLOSURE WITH RHINOCOAT FINISH for superior weather protection to withstand 150 mph winds (8 kW-17 kW).
  • TRUE POWER TECHNOLOGY provides clean, smooth operation of sensitive electronics and appliances.
  • MOBILE LINK COMPATIBLE - wireless remote monitoring system. Receive status updates using your computer, tablet, or smart phone - giving you peace of mind, even when you’re away (purchased separately).
  • THE GENERAC PROMISE - Engineered and built in the USA supported by a five year limited warranty and 24/7 customer care support 365 days a year.
  • Click on the “More Info” tab to download the specifications pdf to view the refer a friend rebate for the $50 savings

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
Product Width (in.) 
CA (CARB) Compliant 
Not CARB Compliant 
Color Family 
Commercial / Residential 
Continuous Wattage 
Engine Displacement (cc) 
Engine Make 
OEM Branded 
Engine manufacturer 
Generator Features 
Hour Meter,Low Oil Shutdown,Overload Protection 
Operational volume (dB) 
Product Weight (lb.) 
435 lb 
Remote Monitoring 
Sold Separately 
Response time (sec.) 
UL Listing 
1-UL Listed 
Warranty / Certifications
Certifications and Listings 
1-UL Listed,CSA Listed 
ENERGY STAR Certified 
Manufacturer Warranty 
5 Year Limited 


Rated 3.9 out of 5 by 16 reviewers.
Rated 5.0 out of 5.0 by Outstanding Product I purchased a Generac 15kW unit 6 years ago. It handled the 2-3 hour outages with no problem but I always wondered what would happen when the outage was measured by days. I found out the first week of November when it ran for 4 1/2 days flawlessly. We were the envoy of the neighborhood. On a scale of 1 to 5 I'd rate this unit a 8!!! November 30, 2011
Rated 2.0 out of 5.0 by Don't expect ANY kind of customer support after the sale. We installed this generator last week and it seems to be a decent generator. We had problems in the transfer switch in that when the power went down, the generator would automatically start up but the transfer switch would not transfer it to the dedicated circuits. This is most likely not a big deal to troubleshoot but Generac patently refuses do do any troubleshooting or phone support at all. I was on hold for 20 minutes (due to being disconnected twice) and when I finally talked with a live human, he told me to call a local Generac repair person who charges $120.00/hr. I won't go as far as to say they were rude, but they were very clear that after the sale, I was on my own. I think that they probably make a decent product but for this kind of money I would expect at least a basic level of customer service. I probably won't buy another Generac product for this reason. August 23, 2011
Rated 1.0 out of 5.0 by Warranty - what warranty? Generac finds any excuse (not valid ones) to not honor its warranty. They play games with you when you call them and refuse to discuss where in your warranty you are not covered. They refuse to even refer to the warranty when discussing the issue with them. Last, they refused to correspond in writing to me, maybe... its because they know everything they are saying is unsupportable. July 8, 2011
Rated 5.0 out of 5.0 by No complaints I purchased my generator just after Super Storm Sandy it replaced a Rigid 8500 watt portable gasoline generator. I reviewed several brands with pros and cons in mind and settled on this brand and wattage generator, my unit was installed by certified electricians who also agreed this was a great purchase with maybe a little excessive power, which I explained would be used to assist my neighbors. The unit exercises weekly as scheduled, I check the oil monthly and force the unit into operation to test with a load on it. I also self installed the remote monitor system that sends emails and text alerts to the locations I want them too. We have had 2 power failures since the unit was installed and everything worked how I hoped it would. I had a problem with a latch so I emailed generac with the unit information and within a week they shipped the parts free of charge. Its silly if anyone complains about noise level while they have power and nobody else around them does not, I find the noise nothing more hen the sound of comfort and piece of mind I made a great purchase. Since my install is between houses it doesn't effect either of our sleeping areas and nobody could tell it was running! November 10, 2013
Rated 5.0 out of 5.0 by Great Stand-by Generator I purchased this generator over 7 years ago because of frequent power outages in my rural area. I now have over 200 hours on this generator and it has NEVER let me down. It is a safe machine in that it uses LP Gas (propane) rather than gasoline which is dangerous to store in any quantity. The generator comes on within 12 seconds of power loss and when power is reinstated, the switch-over is unnoticable. I know the power is back on when I no longer hear the generator running. It is not silent, but with proper placement and positioning, it is very bearable especially when one considers the option of not having power. It has operated flawlessly for periods of 8-10 hours. It is very easy to maintain. I use synthetic oil and change it yearly along with the filter. It automatically runs weekly for 12 minutes to keep the battery charged. I highly recommend this generator! I wouldn't be without one." March 6, 2011
Rated 1.0 out of 5.0 by Disappointing durability I got four years, 72 hrs, of light use, mostly weekly exercise cycles, out of my well-maintained Generac before the rotor blew, off warranty. The repair will cost nearly $1,000 if I decide to fix it. I'm disappointed by the durability of this equipment. October 31, 2010
Rated 1.0 out of 5.0 by Generac junk!! Ever time we needed it it would not work it exercises regularly and when the power is out it don't work they have fixed it every time but now 4 yrs and lost oil pressure and now needs connecting rod I am junking it and buying a Briggs and stratton they stand behind there products and you can get the parts not have to order them as you do generac. Do your seld a favor don't buy one of these they are JUNK!!!!!! December 9, 2012
Rated 5.0 out of 5.0 by Every home should have one! Bought it 3 years ago, and installed it myself. Three months later an ice storm knocked out power for 10 days. Unit performed flawlessly. While my neighbors either struggled with gas cans in the middle of the freezing night, or hired plumbers to drain pipes and left, we enjoyed all the normal comforts of home. Highly recommend!! November 1, 2012
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