Guardian 8kW

Guardian 8kW

Model #6245

Starting At

$2,239.00 Transfer Switch, Installation, Taxes and Shipping Not Included Add to My Products


Provides essential circuit power protection for your home, ensuring the necessities remain powered during an outage. This affordable automatic standby generator offers protection for about half the cost of central air conditioning.


Generac OHVI® Engine
Your Guardian Series generator might have to get you through days—or weeks—without utility power. Generac’s OHVI® engine, specifically designed for generator use, provides the reliability to power through the most severe outages.

True Power™ Technology
Best-in-class power quality with less than 5% total harmonic distortion means clean, smooth operation of your sensitive electronics and appliances.

Evolution™ Controller
The next generation of intuitive controllers featuring a multilingual, two-line LCD text display with color-coded, backlit buttons.

Certified for 18" Installation to the Home
Third-party certified to NFPA standards to be installed as close as 18” from the home’s exterior wall, provided it is located away from doors, windows, and fresh-air intakes, and unless otherwise directed by local codes.

Easy Installation
When combined with a 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), the Guardian Series 8 kW generator is easy to install.

Rated for Operation in Areas with Low Natural Gas Pressure
In areas with low natural gas pressure, the Guardian Series 8 kW generator can operate on natural gas pressures of only 3.5” of water column.

All-Weather Steel Enclosure
Our durable powder-coat finish helps make the sturdy, Galvanneal steel enclosure perfect for all weather conditions. It’s also able to withstand 150 mph winds.

Tool-less Fuel Conversion
Switch between natural gas and LP fuel in the field in a few seconds, without the need for any tools.

Quick, Quiet Exercise Test
Standby generators require a short run-time periodically, known as exercise, to test and ensure the system is functioning properly and ready for an emergency. The Guardian 8 kW self-test runs for only twelve minutes. Choose your schedule - weekly, bi-weekly or monthly.

Mobile Link™ Compatible
Take advantage of Generac’s Mobile Link cellular remote monitoring system and check on your generator’s status using your computer, tablet or smartphone, even when you are away. Sold separately.

Non-cellular remote monitoring options are also available for generator monitoring from inside the home.

24/7/365 Customer Support
Power outages don’t always occur during normal working hours. That’s why Generac’s customer care call center—right here in Wisconsin—provides support any time of day or night, all year long. Generac is standing by 24/7, every minute of every day, to answer your questions.
5-year Limited Warranty

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Rated 5 out of 5 by Love it We switched from oil to gas in August of 2012, and had a new high efficiency furnace installed... But also decided to install this 8kw generac just because in this area of Eastern PA there's way too many trees within the power lines, and of course the storms in the past 2 years have put out power for several days. It worked for the first time during hurricane Sandy (power was out for 4 days). It turned on with in 10 seconds and worked flawlessly the 4 full days. Great buy and great value. It really is tough to not have electricity and the unit was great for the simple reason that we 3 year old twins. November 14, 2012
Rated 5 out of 5 by Early stages of use, but so far so good.......... I had this unit installed by a local dealer about two weeks ago. Up to this point I have not had to rely on generator power, but we feel very satisfied that when the time comes that we do, we will be well prepared with our new Generac unit. The peace of mind alone was well worth our investment. The unit is sleek, looks good in the yard, installation seemed easy by our dealer, and the unit performed flawlessly during our testing and at the weekly exercise time. Extremely pleased as this point, we will reserve full judgment for when the unit is required during a power outage. Until then, so far so good....... May 7, 2016
Rated 5 out of 5 by Very Happy I choose Generac My home just had a 8kw home backup generator installed with natural gas. This generator is easily powering the essentials in my house (furnace, well, sump pump, hot water heater, radon mitigation, 2 refrigerators, and 1 deep freezer). There was still circuits to spare so some outlets and lights are working in the home with no problems as well. I'm very pleased with this purchase and have no worries about the quality, comfort, and longevity this will bring to my home and family. March 11, 2016
Rated 4 out of 5 by It has been there when we needed it! The generator has been reliable in each of the power outages that have occurred in our neighborhood. It also looks as good as the day it was installed thanks to A-Z's maintenance. February 12, 2016
Rated 5 out of 5 by Finally, a product and service you can rely on Every so often a product is delivered, installed and made ready to use by factory trained personnel. This generator met all our needs, was reasonably priced and was installed by professionals. Not only is it reliable, it also sets ones' mind at ease when living in areas prone to bouts of severe weather. January 22, 2016
Rated 5 out of 5 by This product gives peace of mind Peace of mind that you will always have power when you need it most. During storms, heavy wind, and any other thing that takes away your security. December 16, 2015
Rated 5 out of 5 by Best insurance policy against loss in case of power failure. As a widow, I was the one that had to pull out the portable generator in a storm. I can now sleep soundly during a storm knowing that my sump pumps will continue pumping and my food in freezer will stay frozen. December 16, 2015
Rated 5 out of 5 by Keeps your beer cold. During a recent power outage a neighbour approached our front door to ask how we still had power and he didn't. I explained about our Generac back up generator. I said I still had the ball game on tv, A/C, and cold beer in the fridge. He remorsefully said he had no tv and no A/C but had cold beer in the fridge if only his wife would let him open it to get a beer out. When the power goes off you don't always know for how long it will be off. With a Generac back up system these issues are no longer a concern September 10, 2015
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Rated 4.8 out of 5 by 127 reviewers.
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