Guardian 16kW

Guardian 16kW

Model #6459

Starting At

$3,339.00 MSRP Transfer Switch and Installation Not Included Add to My Products

Guardian 16 kW Generator Features and Benefits

Provides essential circuit power protection for your home, ensuring the necessities remain powered during an outage or up to whole house coverage when paired with one of Generac’s load- shedding switches. Capable of backing up a five ton air conditioner.

Guardian 16 kW Generator <strong>Features and Benefits</strong>

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 or Smart 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 16 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 16 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. Optional aluminum available, recommended for salt-air locations.

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

Quiet-Test™ Mode
All standby generators run a weekly test to ensure the system is running properly. Thanks to Quiet-Test, your Guardian Series home standby generator runs its self-test at a lower, quieter RPM than standard operation, and can be programmed to run 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

Home Generator Buyer's Guide

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Rated 5 out of 5 by Product ideal for our needs Dealer very professional, Installation excellent. Field personnel and office personnel outstanding. May 10, 2016
Rated 5 out of 5 by Peace of mind Our electricity has gone off several times throughout the year and for several days at a time. Finally, I feel secure with the Generac Generator. No more freezing or sweating, no more groceries thrown away, no more spending money on motels and my kids have a place to come now when they experience power outages. April 8, 2016
Rated 5 out of 5 by Good product We have been wanting to install one for a long time. We are ready for the storms! The installers were super sweet and it didn't take them no time to install. They did not leave till they made sure everything was working. Hopefully we won't have to use the generator anytime soon but if we do we are ready! April 7, 2016
Rated 5 out of 5 by Does the job I have this product for 3 years and I am pretty happy with it. No problems. Does exactly the job I expect from it. Easy for maintenance. I replace the oil, filter and battery myself. Hope to be able to say the same thing another 3 years from now. April 6, 2016
Rated 5 out of 5 by My 14 KVA Generac I have my system since 2012 and it has been very reliable with no issues. I have a service contract with a Generac approved company since the install. I have it serviced twice a year which is basically maintenance check ups and tune ups. I also have the OmniMetrix remote monitoring option where my vendor monitors my Generac 24/7. Since 2012 I never had a problem with my Generac. It is best one to buy bar non. I had several power outages and after 10 seconds of loss power my Generac comes on line and I have power. My neighbors see my lights on and I simply tell them GET ONE. It is a nice feeling to know you will never be in the dark again.Owning one is not a luxury it is a necessity. My family that near me always say " We are coming to you when we lose power" Thank you Generac for making a great product. Funny while I am writing this I loss power.. April 6, 2016
Rated 5 out of 5 by Great unit easy to install I purchased this unit last spring and installed it myself. The instructions were very easy to follow. It has been running like a champ. All of the material was of very high quality. Extremely satisfied. April 6, 2016
Rated 5 out of 5 by No worries if the power goes out... It is a real load off your mind if the power goes out. We had a bad neutral line and while the power company repaired it, the generator kept the house power going so that we didn't even know when the power was off. April 6, 2016
Rated 5 out of 5 by The generator has given me great peace of mind! The installation and maintenance of my Generac generator have been superb. Installation was done efficiently and quickly while testing it and making sure it was operating correctly. I was surprised when, 6 months after installation, a man showed up to service it. I get a weekly email that the machine is running a test. What more security could you want? The dealer gave me the best, detailed estimate I've ever had (and I did have one before settling on your service). There were no surprises and I couldn't be more satisfied! Thank you all!! March 30, 2016
  • 2016-05-29 T09:33:37.327-05:00
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Rated 5 out of 5 by 80 reviewers.
  • 2016-05-29 T09:33:37.327-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
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The Generac Promise


Peace of mind.

And the power to live.

The Generac Promise means that our 8 – 22 kilowatt Guardian® Series home backup generators will give you peace of mind and the power to live. It means that we engineer and build them here in America*. It means we stand behind them with a strong 5-year limited warranty. We promise to continue to innovate, like with our new Mobile Link™ cellular monitoring system, so you’ll know the status of your generator, no matter where you are. And if you ever need to call, we’re standing by 24/7, every minute of every day, ready to pick up the phone right here in Wisconsin.

*Built in the USA using domestic and foreign parts.

We’ll back you up. We’re standing by. Count on it.

Generac Stock Ticker

  • NYQ
  • GNRC
  • $37.70
  • 5/27/2016 4:02 PM EST