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Model #6462

16,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch

  • Generac for reliable and affordable home back up power solutions.
  • The Generac OHVI engine is purpose-built for extended run times
  • True Power Technology delivers best-in class power quality
  • See More Details

Product Overview

Generac 16,000-Watt 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: 20,000-Watt generator, 200 Amp transfer switch, evolution controller and composite mounting pad; mobile link and 26R battery purchased separately
  • Your guardian series generator might have to get you through days or weeks without utility power, Generac OHVI engine, specifically designed for generator use, provides the reliability to power through the most severe outages
  • Evolution controller is the next generation of intuitive controllers featuring a multilingual, 2-line LCD text display with color-coded, backlit buttons
  • Third-party certified to NFPA standards to be installed as close as 18 in. 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
  • When combined with a pre-wired transfer switch or smart switch, re-engineered connection points and composite mounting pad, the guardian series 16,000-Watt generator is easy to install
  • In areas with low natural gas pressure, the guardian series 16,000-Watt generators can operate on natural gas pressures of only 3.5 in. of water column
  • 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
  • Switch between natural gas and LP fuel in the field in a few seconds, without the need for any tools
  • True power technology provides best in class power quality with less than 5% total harmonic distortion means clean, smooth operation of your sensitive electronics and appliances
  • Thanks to quiet-test, your guardian series home standby generator runs its weekly self-test at a lower RPM for only five minutes, its quieter than other brands and consumes less fuel, choose your schedule weekly, bi-weekly or monthly
  • Take advantage of Generac mobile link cellular remote monitoring system and check on your generators status using your computer, tablet or smartphone, even when you are away, sold separately
  • 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-years limited warranty
  • Download the "Warranty" document from the info and guide section of this web page; then the follow the instructions to claim your FREE 10 year extended warranty!

Info & Guides

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Product Height (in.)
Product Length (in.)
Product Width (in.)


CA (CARB) Compliant
CARB Compliant
Color Family
Engine Displacement (cc)
Engine Make
OEM Branded
Hour Meter,Low Oil Shutdown,Overload Protection
Automatic Transfer Switch
Operational Volume (dB)
Product Weight (lb.)
Response Time (sec.)
Running Wattage

Warranty / Certifications

Certifications and Listings
CSA Listed,UL Listed
Manufacturer Warranty
5 Year Limited

Questions & Answers


What is the cost of this generator. Can you ship outside the US. Can the generator be shipped to your Home Depot

Asked by Jason September 21, 2017

This unit is no longer available, we do not ship products to locations outside the US continental 48 states. Mike

Off-grid house with propane

Asked by flashfire September 21, 2016

Generac's Guardian Series automatic standby generators are not manufactured for use in off-grid configurations. If you are interested in a product that is applicable for use in environments in which utility power is not available, we would recommend considering our EcoGen automatic standby generators. To learn more about these particular products, contact us directly at 888-GENERAC (436-3722).

what size propane tank is recommended for this size tank

Asked by sojo1 September 15, 2016

Generac's 16kW automatic standby generator requires the use of a propane tank no smaller than 250 gallons in size.

how do i no what size generator i need

Asked by jlhj September 8, 2016

The best way to determine the ideal generator for your backup power needs is to work directly with a certified electrician in your local area. For help locating a certified party near you, contact us directly at 888-GENERAC (436-3722).

Does it matter if the battery terminals are on the top, side or front?

Asked by Tom September 4, 2016

So that we can acquire additional information that will allow us to provide a definitive response to your personal inquiry, please contact us directly at 888-GENERAC (436-3722).

Does this generator have the option of generating 220 volts?

Asked by Adeche August 27, 2016

Generac's 16kW automatic standby generator, model number 6462, features a maximum voltage output of 240V.

how long will it run on 100 gal. of lp gas

Asked by Steven August 18, 2016

Mine ran for 30 hours straight during a recent power outage and used 20 cf.

Should I buy from homedepot or local dealer?

Asked by Kenny August 3, 2016

not sure how this works! we are looking to install a standby generator however, we do not have gas or lp at our house. we heat our house with oil.

Asked by lynn July 25, 2016

Generac's air-cooled automatic standby generators are manufactured to operate on a natural gas or liquid propane fuel source. Attempting to utilize alternative fuels to run the generator is not recommended; doing so will immediately void the product's warranty.

which generator will work for a full house of 2200 sq.ft. (ranch with basement)

Asked by Thumbs July 18, 2016

The loads required in a house will vary, and are not determined by the square footage of the home, but are determined by the items you deem necessary to run in an outage situation. To properly determine the correct generator for your needs, we recommend working with a certified electrician in your local area. For help locating a certified party near you, contact us directly at 888-GENERAC (436-3722).

16,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch - page 2

Customer Reviews

  • 4.9
    out of 410 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 410 reviews
Great Gen.
Great system works great. Have had one power outage and it was about 24 deg. And it started first time ran about one hour and you couldn't tell that the power was off. I bought mine during to time that it had a 10 year warranty.
by Ghostrider
Makes me fill protected
The unit looks great..I live in the country where the power goes out quite frequently..so now I never even think about when we have bad weather..Only had it for a year, so I can't comment on maintenance or reliability. I have not had any problems. I have a geothermal HVAC system and the well pump is tied into my shop therefore I need to transfer switches to power both my home and my shop. With the underground power it makes for neat installation. Very pleased.
by Bill
Makes Us Feel More Secure
We have only had our GenerAC whole-house unit for 6 months and only had to use it once but the feeling that our basement will no longer flood when the power to the sump pump goes out during a storm or that we can still flush when there's no electricity to run the well is very satisfying.
by Dex
Best value on the market
Generac is consistantly a great product to install and enen better value long term.
by Agenerator
I've had it since spring 2016 first test on our New England nor'easter 1/24/17 thank god it was just 60 mile an hour winds and rain and not snow kicked on twice in one day worked great neighbors on now envious
by Sparky
Great Generator
Good, reliable, high quality backup power source. Installed on high concrete footing for easy access and snow avoidance. Would prefer if the top cover had more of a crown to prevent standing water... also, would prefer self-adjusting valves. Bottom line - Works as advertised... would recommend.
by GenAnTonic
Everything as advertised ... Great communications ... actually looking forward to the power going out now
by lolox2
One of our best purchases ever.
In the last five months we have lost power six times. My wife and I talked about getting a generator but thought they would be way to expensive. Boy were we wrong! When I told my wife the price she said "order it" Four days later it was here and two days after it was installed. We have the 16,000 watt Generac with the whole house transfer switch. IT RUNS EVERYTHING. Very Very pleased.
by GEO
7 people found this helpful
Whole-House Standby
My Generac Standby Generator is off to a good start. We have it completely installed and have run the whole house from it for about an hour. It appears to perform as advertised, but one hour doesn't really tell us how it will do after a hundred hours. I expect no problems, though. The installation is not difficult but there's a lot of work. The Generac manuals say, "Only qualified electricians. . .should attempt installation!" They mean it. Unless you are well versed in wiring branch service panels and dealing with the National Electric Code, you shouldn't attempt it. I did but I'm an electrical engineer with much wiring experience. There are some things you can't get from the Generac literature: the long front opens for engine access so it needs space in front; the breaker panel is on the outside of the right end; the electric and gas inlets are on the back near the right corner (as seen from the front); the output breakers are 65 amps so #6 AWG wire to the transfer switch is sufficient, even for a 200-amp switch; the package weighs almost 500 pounds; the base dimensions are 48 by 29 inches so the concrete pad needs to be several inches larger; six conductors #18 AWG rated at 250 vac are needed for control wires from the transfer switch to the generator. These are all questions I had while planning the installation before ordering. The overall work, from placing concrete for the pad to running 60 feet of 3/4" conduit under the house to installing the transfer switch to running the generator power and control wires took about a dozen hours. My installation supplies the whole house through 200-amp service. Shifting the mains from the top of the entrance panel to the transfer switch and then connecting the transfer switch to the entrance panel requires you to work with #000 AWG wire, which can be a struggle. That part of the installation took over two hours and a couple of skinned knuckles. Once everything is installed, testing is straight forward and the system ran properly as soon as programming its controller was finished. You must perform the authorization-code step. Materials for installation totaled about $600. My time is free and our daughter's help is priceless!
by Bill2413
Response from GeneracMar 23, 2015
We are happy to learn of the positive experience that you have had with our automatic standby generator and associated transfer switch. As you have alluded, we would always recommend utilizing qualified electricians for installation purposes. Also, please note that the wiring and configuration of each installation will vary from one setup to the next, as local codes supersede any of our recommendations as the product's manufacturer. Lastly, please note that the information that you were unable to locate in the product's literature is in fact provided in the unit's documentation. If you would like to receive this literature for future reference, please do not hesitate to contact us directly at 888-GENERAC with the model or serial number of your personal unit. Lastly, to ensure that you have registered the unit properly with Generac Nation, please provide the requested information at the following link: http://www.generac.com/generac-nation-sign-up?cid=frm-100-aa Generac
21 people found this helpful
Best move I ever made
I use to use a 8 K welder generator to keep power running in the house but I had to be home to connect it. I travel all the time not fun getting the phone call from Mrs. I connect this up and could not believe how well the switch and generator reacted to an outage, and how it handled the load. I highly recommend this generator and switch.
by sjohnso4
9 people found this helpful
Showing 1-10 of 410 reviews