Generac 20,000-Watt Air Cooled Automatic Standby Generator-DISCONTINUED-6250 - The Home Depot


Model # 6250

Internet # 204007488

20,000-Watt Air Cooled Automatic Standby Generator-DISCONTINUED

Generac 20,000-Watt Air Cooled Automatic Standby Generator-DISCONTINUED

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

$3,997.00 / each


Model # 6250

Internet # 204007488

Store SO SKU # 1000032997

Choose the #1 Selling Home Standby Generator Brand. Generac’s 20kW 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.

  • Tool-less fuel conversion allows for easy switching between natural gas and LP fuels in the field
  • System Includes: 20kW generator, 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
  • 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 in. 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 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
  • 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 in. of water column)
  • Sturdy, all-weather aluminum enclosure with rhino coat finish for superior corrosion-resistant protection from the elements, making it ideal for coastal, salt-air climates and able to withstand 150 MPH winds
  • Quiet-test weekly self-test mode runs at a lower RPM, is quieter and consumes less fuel, sound-dampening enclosures are lined with foam panels for further noise reduction
  • DPM technology intelligently manages household loads for a more affordable standby solution
  • 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)
  • Generac promise - engineered and built in the USA supported by a 5 year limited warranty and 24/7 customer care support 365 days a year

Info & Guides

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Assembled Depth (in.)  48 in  Assembled Height (in.)  29 in 
Assembled Width (in.)  25 in  Height (in.)  29 
Product Height (in.)  29  Product Length (in.)  48 
Product Width (in.)  25  Width  25.00 
CA (CARB) Compliant  Not CARB Compliant  Color Family  Gray 
Commercial / Residential  Residential  Continuous Wattage  20000 
Engine Displacement (cc)  999  Engine Make  OEM Branded 
Hour Meter  Yes  Low oil shutdown  Yes 
Operational volume (dB)  66  Product Weight (lb.)  451 lb 
Remote Monitoring  Sold Separately  Response time (sec.)  10 
Returnable  30-Day  UL Listing  1-UL Listed 
Warranty / Certifications
Certifications and Listings  1-UL Listed,CSA Listed  ENERGY STAR Certified  No 
Manufacturer Warranty  5 Year Limited 


Rated 4.9 out of 5 by 231 reviewers.
Rated 5 out of 5 by excellent unit to have i live on a mountain bluff on a dead end road at the edge of the electric utility service region, well outside of any town or city. power outages are not unusual. this unit is reliable and quiet and works like a charm. it was a part of our going in plan when we chose to build in this location and i'm glad to have it included. would do it again and would recommend it to other to consider. November 6, 2014
Rated 5 out of 5 by Better than 5 stars!!!!! We had our Generac 20kW and whole house switch installed in March 2014. Ever since the install we have been hoping for the power to go out (strange yes but wanting to test the investment). Finally the power went out during a thunderstorm Sept. 1st. The generator started confidently just like it does on it's weekly exercise runs. We were so pleased that we did not need to drag out the old portable generator. During the 6 hours of outage we ran, 3 TVs, 3 computers, the dishwasher, the AC, 2 fridges, 1 freezer, the sump pump, the well pump, the garage door and almost every light in the house at varying times. The Generac never missed a beat and was so quiet when it was time for bed nobody complained like they did with our old portable. Fantastic product. Exactly why my parents and in-laws installed their's a few years ago. September 2, 2014
Rated 5 out of 5 by Awesome! We had this unit installed and within 2 weeks the power went out for approx. 7 hours. Would have thought it just blinked off then back on thanks to this generator. Love it! Worked like a charm. Could not be happier! September 10, 2014
Rated 5 out of 5 by Product is a blessing we had a portable 15000 kw generac that worked well but the manual part of going out in the dark and bad weather to start it and lift the heavy 5 gallon gas cans to fill it was not easy anymore since I am in my 70's. After hurricane Rita the problem was even finding gas. We now feel so at ease and don't worry about the frequent power outages in the woods where we live. we don't even notice the change when power goes off and then comes back on later. The Generac has really been a blessing. July 14, 2014
Rated 5 out of 5 by Valuable purchase & peace of mind I'm a 70+ female on oxygen 24/7 and VERY concerned about power outages with my dependency on my oxygen converter. I purchased the whole house generator and when my power goes out, I knoiw to count to three and have it come back on, switching to my home's natural gas supply. It's unbelieveable how much I love and depend upon my Generac equipment. Even my son, who lives a 2-hour drive from me, can rest knowing I'm not without power and am in good hands. Thanks! July 17, 2014
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