0696471067293

Generac

Model 6729

Internet #205399532

Store SKU #1000927946

Store SO SKU #1000640155

20,000-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

Frequently Bought Together

Product Overview

Generac's 20,000-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.

  • 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
  • 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
  • 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 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 20,000-Watt generator is easy to install
  • In areas with low natural gas pressure, the guardian series 20,000-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
  • Switch between natural gas and LP fuel in the field in a few seconds, without the need for any tools
  • Thanks to quiet-test, your guardian series home standby generator runs its weekly self-test at a lower RPM for only 5 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
  • 5-year 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



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Customer Questions & Answers

108 Questions433 Answers

Customer Questions & Answers

20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch

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This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
 
9 answers

Less hook up, is the unit ready to run on nat. gas out of the box ? Thank you

This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
Asked by
Chauko
NW Pa.
December 3, 2012
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Answers (9)

Asked by
New Jersey, USA
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Home Improvement Profile: Other
January 23, 2014
Answer: 
The generator can run on either natural gas or propane with just the turn of a lever on the fuel system. Keep in mind that propane delivers more power to run the generator than natural gas.
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Asked by
Mount Bethel, PA
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Home Improvement Profile: DIYer
December 31, 2013
Answer: 
Yes it is. However, you need to insure the existing regulator will handle the additional load.
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Asked by
New Jersey, USA
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September 3, 2013
Answer: 
Yes
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Asked by
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February 5, 2013
Answer: 
Yes, it can also be easily changed for use on LP.
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Asked by
Myrtle Point OR
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January 29, 2013
Answer: 
Yes
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Asked by
Crescent City, CA, USA
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January 8, 2013
Answer: 
Mine is propane powered, but I think you only need to make an adjustment on the engine to run NG.
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Asked by
GARS
December 26, 2012
Answer: 
Yes
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Asked by
Dallas, TX, USA
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December 21, 2012
Answer: 
Mine ran on Nat gas out of the box. You have to change the venturi for LP.
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Asked by
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December 5, 2012
Answer: 
Our home standby generators up to 48kw come set from the factory for natural gas but are easily field convertible to propane. To convert from natural gas to propane, and vice versa, you will want to reference the section in the owner’s manual titled “Reconfiguring the Fuel System.”
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This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
 
7 answers

how much cost for installation

This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
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jacksonville fl.
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July 5, 2014
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Asked by
Theodore/Mobile Alabama
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Home Improvement Profile: Other
July 10, 2014
Answer: 
Here with the company I used the average install cost was quoted around $1,800. It was less for me since my set up site was level and cleared. Access to the power and meter set up were handy and the generator did not have to be picked up for delivery by them. Home Depot were able to get it to the set up site. They can't always do that, depending on where they have to drop it. This delivery driver only Read More
Here with the company I used the average install cost was quoted around $1,800. It was less for me since my set up site was level and cleared. Access to the power and meter set up were handy and the generator did not have to be picked up for delivery by them. Home Depot were able to get it to the set up site. They can't always do that, depending on where they have to drop it. This delivery driver only had a pull pallet hand truck so it could not pull through grass. He could only back it so far with a power line and trees but it was enough luckily. He worried the lift gate might smash my flower bed, I said the flowers were cheap. I moved a solar light, he dropped the lift, no plants got harmed and I replaced the solar light. The new generation of Generac are on their own composition base and as a rule don't need you to pour a concrete pad, but check with your installer to be sure you aren't the exception. Ask if they hook up your gas or propane if you use it. You may need to pay for a bigger meter or have a plumber install the gas hook up. My first generator needed both things done and I had to buy the transfer switch separately and pour a concrete pad. Your switch/box comes with this generator. Get an estimate before you order on set up but plan on a couple thousand or just under. Read Less
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Asked by
Glen Cove, NY, USA
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Home Improvement Profile: Other
July 9, 2014
Answer: 
Certified electrician $2000 and a certified plumber $3000.
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Asked by
Mount Bethel, PA
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Home Improvement Profile: DIYer
July 8, 2014
Answer: 
There is no way to determine this except by a professional visiting the site. The cost would change by many unknown factors. EG- Distance from gas supply - will gas regulator need to be changed to meet thee new demand - how much wire is needed to get to the incoming existing service - will the wire need to be buried - I think you get this now.....
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Asked by
Philadelphia
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Home Improvement Profile: DIYer
July 7, 2014
Answer: 
Installation was about $4,500
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Asked by
henderson, wv
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Home Improvement Profile: DIYer
July 7, 2014
Answer: 
It depends on who does the work. I installed the unit myself, and the cost for materials was approximately $500.00. Before the installation I had a contractor give me quote, and the total for the unit plus installation was $7500.00. I would not recommend installing this unit yourself unless you are very comfortable and experienced doing electrical work.
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Asked by
Olympia, Washington
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July 6, 2014
Answer: 
buster, Our old 200 amp service panel was installed in the late 60's so when we got the generator, we replaced it with a new 200 amp service. Without having to replace the old panel, our cost would have been approximately $2,300.00 believe me it was well worth it. Everything has been on "auto pilot" since Feb. of 2011 and no worries.
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Asked by
Houghton Lake, MI
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July 6, 2014
Answer: 
You want an electrician to install the Transfer Switch and a person who understands and can make a safe connection to your gas line. You may want the unit on the ground or may want it on a concrete pad made using 2x4 form like I did. I had one person recommended by Generac Web Site install the slab, the unit, and do all gas and electric connections with the remote monitoring device for $1,500. Their Read More
You want an electrician to install the Transfer Switch and a person who understands and can make a safe connection to your gas line. You may want the unit on the ground or may want it on a concrete pad made using 2x4 form like I did. I had one person recommended by Generac Web Site install the slab, the unit, and do all gas and electric connections with the remote monitoring device for $1,500. Their experience made it a job done in a few hours once concrete was ready. Read Less
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This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
 
7 answers

What is the length of cord?

This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
Asked by
Washington court House, Ohio
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November 20, 2013
Need to know as to where generator sits. Thanks.
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Answers (7)

Asked by
Mount Bethel, PA
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Home Improvement Profile: DIYer
January 25, 2014
Answer: 
This generator requires hard wiring. There is no "cord". You can go to the Generators Webpage @ Home Depot and look in the specs for what the requirements are to wire this in detail. I would also suggest you have a professional do the install for you. Home Depot will gladly supply one for you if you want.
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Asked by
Northern New York
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Home Improvement Profile: Professional
January 24, 2014
Answer: 
The generator I received a picture of is the 20 KW Automatic Standby with the 200 Amp Service Entrance Rated Transfer Switch. This particular package does NOT come with ANY of the wiring required to install it. The reason - The 200 Amp Transfer Switch is intended to be installed as part of your "Service Entrance" up to 200 Amps. So the wiring HAS to be AT LEAST equal to the current carrying ability of Read More
The generator I received a picture of is the 20 KW Automatic Standby with the 200 Amp Service Entrance Rated Transfer Switch. This particular package does NOT come with ANY of the wiring required to install it. The reason - The 200 Amp Transfer Switch is intended to be installed as part of your "Service Entrance" up to 200 Amps. So the wiring HAS to be AT LEAST equal to the current carrying ability of your Utility Company Service.
Whoever installs this particular package would have to build the necessary interconnections required BASED on what you already have existing at your location.
The generator isn't limited to what you refer to as cord length, but I would have to see what you have in order to view limitations.
This particular installation usually calls for the Service Entrance Rated Transfer Switch to be placed between your Utility Power's Watt Hour Meter and your MAIN PANEL. This normally requires adjustment of your Service Entrance Conductors and that can require; notification of your utility electric company, loss of utility power while the work is being performed and inspection of the electrical work before power can be restored. Weather may be a consideration as your heat / ac, sump pump, well, refrigerator, freezer, etc. may be affected while the work is forcing the power to be off.
Depending on where you live, a permit may be required.
If your installation needs to be inspected AND the installation is as described as above then changes to your existing Service Entrance will be required.
With the above installation, the First Point of Disconnect is moved FROM your MAIN PANEL to the Service Entrance Rated Transfer Switch. The Bonding of the Neutral and the Ground is required to be done at the first point of disconnect. This means that the bonding in your Main Panel needs to be removed. A four conductor Service Entrance needs to be installed between your ATS and your Main Panel and the possibility exists that your Neutrals and Grounds be separated in your Main Panel.
This is more information than you asked for but it is information you may need.
Talk to; an associate, a Home Depot consultant, the contractor of your choice OR even those you know that have installed generators.
I have installed these. It's not as hard as it sounds and they're well worth the effort.
Be informed not surprised.
Hope this helps.
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Asked by
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Home Improvement Profile: Other
January 23, 2014
Answer: 
Your question is worded incorrectly. There is no "CORD". It takes an electrician to wire the standby generator and transfer switch into your existing electrical panel and meter. This is a permanent installation that powers your house through your normal utility company, or in the event of a power outage, the transfer switch controls the starting and operation of the standby generator. Installation Read More
Your question is worded incorrectly. There is no "CORD". It takes an electrician to wire the standby generator and transfer switch into your existing electrical panel and meter. This is a permanent installation that powers your house through your normal utility company, or in the event of a power outage, the transfer switch controls the starting and operation of the standby generator. Installation instructions explain the proper location of where the generator is to be placed in regard to the proximity of the home structure, windows, and doors. Read Less
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Asked by
Houghton Lake, MI
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January 6, 2014
Answer: 
Not sure of your "cord" question. You need to connect to the transfer box at your electrical input to house. You need to connect to gas supply. One or both lines should be buried & perhaps brought up through concrete or gravel base at generator. Get quotes from at least two electricians, one of whom is on Generac web site & may have special training, & listen to their suggestions. Make sure gas meter Read More
Not sure of your "cord" question. You need to connect to the transfer box at your electrical input to house. You need to connect to gas supply. One or both lines should be buried & perhaps brought up through concrete or gravel base at generator. Get quotes from at least two electricians, one of whom is on Generac web site & may have special training, & listen to their suggestions. Make sure gas meter adequate for both generator and your gas furnace. You don't want entire gas supply pressure sucked up by generator so your furnace goes out due to generator taking all the gas. Buy cold weather kit & remote monitoring too. Shop Generac rebates of about $400 in fall, free monitoring, & please email mbauchan@bauchan.com for extra rebate paid both you and Generac owner who refers you if you make purchase. Read Less
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Asked by
Wolfe City, TX 75496, USA
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December 31, 2013
Answer: 
I placed my generator next to my meter box
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Asked by
Mount Bethel, PA
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Home Improvement Profile: DIYer
December 20, 2013
Answer: 
There is no chord at all. This unit needs to be hard wired all the way.
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Asked by
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November 22, 2013
Answer: 
As Generac’s 20kW Automatic Home Standby Generators do not come pre-packaged with a pre-wired switch, the length of the required wire would be determined based on the location from which you intend to install the unit. Furthermore, the required wiring would need to be provided by the unit’s installer.
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This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
 
7 answers

Does Home Depot do the installation of generac generators?

This question is from 20,000-Watt Air Cooled Automatic Standby Generator with 200 Amp SE Rated Transfer Switch
Asked by
Jack
Weston MA (near Boston)
January 30, 2013
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Asked by
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November 12, 2013
Answer: 
they will contract with local companies for the install. You will usually be paying more because of the overhead.
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Fremont, WI
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August 31, 2013
Answer: 
They have contracted install/repairers
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Asked by
New Jersey
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July 25, 2013
Answer: 
I believe that Home Depot uses contractors for all home repairs and installations.
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Asked by
Beaumont, TX, USA
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April 6, 2013
Answer: 
Hello Jack -
Yes. Home Depot contracts with licensed electricians to help you get your generator installed to factory specifications.
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Asked by
Snowman
Northern New York
March 16, 2013
Answer: 
You would have to inquire at your local Home Depot OR use the "pop-up" on their web site. ( The pop-up usually comes up on the bottom of the screen while viewing a specific generator model. )They do provide installation but I can't speak for every location.
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February 5, 2013
Answer: 
They set you up with a local qualified contractor.
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January 31, 2013
Answer: 
Hi Jack
Yes, we do offer installation for generators. Please contact us at 1-800-557-5221 for pricing and availability. See the following link for more information: http://www.homedepot.com/webapp/catalog/servlet/ContentView?pn=SV_HS_Generator_Installation&storeId=10051&langId=-1&catalogId=10053
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Customer Reviews

Rated 4.6 out of 5 by 83 reviewers.
Rated 1.0 out of 5.0 by UUNK Plain ol JUNK We had a 20K Generac and what a disaster! The unit was 6 years old, had less than 60 hours of run time and the generator part bearings were chewed up. That figures out to about $100 per hour plus fuel for electric. If I take out weekly test running for 6 years it equals about 31 hours, that leaves less than 30 hours of actual power generating or $200 per hour producing power for our house. The distributor say they couldn't do anything about it since the "warranty" has expired. All maintenance was completed too. July 17, 2016
Rated 5.0 out of 5.0 by This is our second one - great generator!! We recently moved into a new home and purchased this 20KW Generac. After installation the electrician threw the power to the house and the generator automatically transferred power with natural gas. We haven't had a power outage since it was installed but it is a great peace of mind knowing that our home can still function as usual during an outage. It automatically runs an exercise every week. We don't notice the noise when we are inside. We knew that we wanted this brand because our old home had the 17KW which never failed us. Found the best pricing at Home Depot. November 6, 2013
Rated 5.0 out of 5.0 by Rich20K Easy to install, and configure will definitely recommend to my friends and family. March 22, 2016
Rated 5.0 out of 5.0 by This product was everything I wanted it to be. My wife and I were very concerned about electrical blackouts and wanted an affordable solution to this problem. We shopped around and talked with various electrical contractors and even found one that we selected to do the installation. He recommended his own brand, stating that it was the best. However we selected the Generac Guardian Series 20,000 based on reviews, product description and price. Home Depot worked with us and made the purchase very affordable. When installed, the electrical contractor said he was very pleased and found it to be as good (or better) than the one he had recommended. Luckily we have not had to use the system yet, but it is set up for weekly self testing and the electrical output is more than adequate for our entire home and it works in test mode like a dream. I am trying to decide now if I want a real blackout just so that I can gloat over my neighbors. June 19, 2013
Rated 4.0 out of 5.0 by The generator is only part of the cost I think the Generac will be good to have, but you should be aware that the installation costs may be more than you expect. I had to get a larger capacity gas meter for $150. The gas plumber was $700 and the electrician will be $1200-$1500. Probably still worth it because we've been flooded out 4 times before due to power outages and each time cost more than the generator will cost. August 27, 2013
Rated 4.0 out of 5.0 by Provides a security blanket We live in a area where the hurricane season runs from 1 June to 30 November, so having a Generac standby generator provides us with a level of comfort knowing when the power goes out, the lights will come on. Ordering through Home Depot is easy and they keep you informed of the progress of your order from the time you place it, until it arrivals at your destination. March 19, 2014
Rated 5.0 out of 5.0 by Very satisfied with generator and GENERAC Service The generator has functioned as advertised. The one minor issue we had when we started it up and tested it was a small oil leak. I called GENERAC and they were very responsive and professional. We had a serviceman at the house within two days. He fixed the leak at no cost to us. November 12, 2013
Rated 5.0 out of 5.0 by MY 2ND GENERAC STANDBY 20KW GENERATOR FROM HOME DEPOT IN 7 YRS/THIS 1 FOR OUR NEW HOUSE MY OPINION AND EXPERIENCE: My 2nd standby Generac 20KW Nat gas generator. Even better. My 1st had to have a concrete pad/separately ordered transfer switch, is water cooled with a Mitsubishi engine. This 1 is air cooled on it's own composition pad and CAME with the transfer box/switch. I have yet to use it in a power outage. The driver was able to back his rental delivery truck to the unload area and place it by the house where it is now installed. Besides saving me money, and getting a policy adjustment as it went on sale online/price match, free delivery to it's installation place saved me on installation. The company that installs here did not have to pick it up and set it in place! Living here in hurricane country and thunderstorm territory in the far burbs this is a must have! After hurricaines Ivan/2004 and Katrina/2005 it is dangerous to hunt gasoline for a small generator daily, and we are too old to do without our conveniences. Then there is security if you go to a hotel if you can find one. An empty house invites looters. I will gladly pay the gas bill, equate it with those mentioned expenses of hotel and security. You can use the large propane tank if you don't use natural gas. I do recommend getting a maintenance contract with a local generator maintenance company. Those contracts go year to year to change oil, check maintenance, your system, replace the battery when needed, etc. I use synthetic oil when they change the oil, lasts longer! The machine should be set to run a bit same time once a week, charge the battery and keep moisture out of the machine to keep it in good running order. We have ours set for Sunday mornings. I highly recommend HOME DEPOT and their special financing credit card offers on these! July 10, 2014
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