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Generac

Model 6237

Internet #204006863

Store SO SKU #1000032969

8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch

Was  $2,397.00
$2,157.30 /each

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  • 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

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Product Overview

Generac's 8,000-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: 8,000-Watt generator, 50 Amp transfer switch, evolution controller and composite mounting pad
  • 24/7 Generac customer care support 365 days a year, power outages do not always occur during normal working hours that is why we are standing by
  • 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 an intelligent 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) get it installed 800-557-5221
  • Tool-less fuel conversion allows for easy switching between natural gas and LP fuels in the field
  • 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 galvanneal steel enclosure with rhinocoat finish for superior weather protection to withstand 150 MPH winds
  • 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 supported by a 5-year limited warranty and 24/7 customer care support 365 days a year
  • Click on the more info tab to download the specifications pdf to view the refer a friend rebate for the 50 savings
  • Mobile link and 26R battery purchased separately



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83 Questions226 Answers

Customer Questions & Answers

8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch
8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch

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5 answers

Do you need to specify naural gas or propane gas when ordering or will the same generator run on either type of gas?

This question is from 8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch
Asked by
Dbl D
Harrisburg, PA
August 5, 2012
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Answers (5)

Asked by
Bucks County, PA, USA
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Home Improvement Profile: Other
May 1, 2014
Answer: 
No. However, as it states somewhere in the specs, if you hook up to natural gas, you get 7KW, whereas if you use propane, you get the 8Kw. I don't know why, but a plumber would probably be able to answer that. Or, even have Home Depot inquire about it.
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Asked by
Southeastern Wisconsin
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September 25, 2012
Answer: 
The unit comes set up for natural gas from Genrac. A simple tool and instructions are provided to switch over to propane.
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Asked by
Snowman
September 18, 2012
Answer: 
This unit is shipped from the factory in Natural Gas mode. To use Propane you merely locate the Fuel Source Selector Switch which is currently in the Battery Compartment - near the top - just behind the air filter. The selector switch is spring loaded, so there is a special tool used to pull the switch straight out before rotating the switch 90* clockwise to the LP position then letting the spring Read More
This unit is shipped from the factory in Natural Gas mode. To use Propane you merely locate the Fuel Source Selector Switch which is currently in the Battery Compartment - near the top - just behind the air filter. The selector switch is spring loaded, so there is a special tool used to pull the switch straight out before rotating the switch 90* clockwise to the LP position then letting the spring retract the switch. Care needs to be taken as the switch is made of plastic and excessive force can break it. The special tool should be in a plastic bag with your; flexible gas connection, battery post covers and the like. It's a black "T" handle with a "post" which goes into the hole in the switch.
The switch can be turned to far so if you can't see the "LP" and "NG" positions try to feel for the proper seating of the switch.
The best time to perform this is BEFORE you install the battery as you may be able to get your head in to where you can see better.
Instructions for this are in the Owners Manual under Reconfiguring The Fuel System
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Asked by
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September 18, 2012
Answer: 
specify. Natural gas needs an adapter.
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August 7, 2012
Answer: 
Hello Dbl D and thank you for your question.
The Generac 8kW Automatic Backup Power System is configured for natural gas operation at the factory. Switching over to LP Vapor is a simple procedure. Your unit is designed to work with either fuel source.
For more information, please see page 7 of the Installation Guidelines found here: Read More
Hello Dbl D and thank you for your question.
The Generac 8kW Automatic Backup Power System is configured for natural gas operation at the factory. Switching over to LP Vapor is a simple procedure. Your unit is designed to work with either fuel source.
For more information, please see page 7 of the Installation Guidelines found here: http://www.homedepot.com/catalog/pdfImages/80/80a9a1d0-f6e3-43c2-a36d-c6b1b9d82c9b.pdf.
Best wishes with this project. Read Less
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5 answers

Does this unit have to be installed outside?

This question is from 8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch
Asked by
Tony
December 19, 2011
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Asked by
Bucks County, PA, USA
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Home Improvement Profile: Other
May 1, 2014
Answer: 
I don't know. Have never heard of one being inside, because it is air cooled.....but you could always contact a local Generac dealer with that question. We have found that our local dealers are more than happy to answer questions, because they hope to get your business in the future.
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Asked by
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November 3, 2012
Answer: 
yes
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Asked by
Snowman
September 19, 2012
Answer: 
This unit was manufactured for an outdoor installation. Not Only should it be installed outdoors but special instructions should be followed to insure that it's exhaust can't find a way into your home. These instructions come with the unit. In some installations I recommend a plug-in "CO" detector be placed inside the home at a receptacle closest to the outside wall where the generator is placed. I like Read More
This unit was manufactured for an outdoor installation. Not Only should it be installed outdoors but special instructions should be followed to insure that it's exhaust can't find a way into your home. These instructions come with the unit. In some installations I recommend a plug-in "CO" detector be placed inside the home at a receptacle closest to the outside wall where the generator is placed. I like this for; older homes, homes where the prevailing wind takes the exhaust in the direction of the home, homes where season change may effect the path of exhaust flow - such as snow, homes where additions made later may effect exhaust flow. New homes require "CO" detectors, are more tightly sealed, have air turnover systems and may not need the extra protection. Me, I like to err on the side of safety. Read Less
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Asked by
London, OH 43140, USA
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March 13, 2012
Answer: 
Yes. It burns natural gas or propane.
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Asked by
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December 21, 2011
Answer: 
Yes, all Generac home backup generators must be installed outside the home. These units cannot be modified for inside installation.
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5 answers

Does this turn on automatically when the power fails, or do I have to go out and start it up manually?

This question is from 8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch
Asked by
done with living in the 17th century
November 23, 2011
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Asked by
Bucks County, PA, USA
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May 1, 2014
Answer: 
If you are asking about the 8KW Generac stand-by generator (the one we have)....if you buy a battery (look on-line for type), it will be automatic start. that's what we did, as we don't want to have to be home in order to start it. With the battery, you set a timer-type device in the unit, to do a test start up on the same day /time every week, forever. It runs for 12 minutes...starts up and shuts down Read More
If you are asking about the 8KW Generac stand-by generator (the one we have)....if you buy a battery (look on-line for type), it will be automatic start. that's what we did, as we don't want to have to be home in order to start it. With the battery, you set a timer-type device in the unit, to do a test start up on the same day /time every week, forever. It runs for 12 minutes...starts up and shuts down by itself. We have had ours for about 3 weeks and the test runs have been perfect....sounds like a lawn mower.....with the battery, the generator will come on automatically whether you are home or not during an outage. We felt it was worth the price of a battery...i'm pretty sure it's the same as a car battery, but check the specs on-line. We got ours at a local Generac dealer, but probably didn't have to....just wanted to be sure we started with a "totally approved " battery. We will buy a back up one to keep on a charger in the basement, as some reviewers said they didn't get the expected life out of their battery....just like car batteries.....Also, if you didn't have the battery, you would have to go out once a week to do the test run. Read Less
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Asked by
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November 3, 2012
Answer: 
power goes out .....count off 13 seconds and the Generac cuts on :)....u can set it for manual. We turn ours off at night and restart it in the morning.
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Asked by
Snowman
September 18, 2012
Answer: 
This unit has a 3 position switch. In AUTO it will run automatically if installed correctly.(correctly only refers to an auto-standby setup where an automatic transfer switch and sensing circuit are incorporated.) In MANUAL it will start and run as soon as the switch is placed in this position, if installed correctly. (correctly here only refers to proper fuel selected and turned on - I know people who Read More
This unit has a 3 position switch. In AUTO it will run automatically if installed correctly.(correctly only refers to an auto-standby setup where an automatic transfer switch and sensing circuit are incorporated.) In MANUAL it will start and run as soon as the switch is placed in this position, if installed correctly. (correctly here only refers to proper fuel selected and turned on - I know people who save money by using the OFF position and valving off the fuel. Then they wonder why it won't start when they forget to turn the fuel back on.) In OFF you should be able to service the unit without it starting at all.
In either AUTO or MANUAL the unit can go into LOCKOUT where it WILL NOT attempt to start again unless the switch is RESET by switching it to off and then back to AUTO or MANUAL.
So, knowing that this switch exists and how it works is important.
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Asked by
London, OH 43140, USA
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March 13, 2012
Answer: 
Full Auto.
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Asked by
Read all my Q&A
November 23, 2011
Answer: 
This unit starts up automatically in a power outage, and will run on your existing LP or natural gas fuel supply until utility power returns.
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4 answers

My house has 100 amp service. I see that the new model comes standard with a 50 amp transfer switch. Will this work or do I need 100 amp switch?

This question is from 8,000-Watt Air Cooled Automatic Standby Generator with 50 Amp Pre-Wired 10-Circuit Transfer Switch
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April 30, 2014
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Asked by
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October 7, 2014
Answer: 
You won't want to run things like tha A/C or dryer so you won't hook them up and probably won't need more than 50
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Asked by
Northern New York
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Home Improvement Profile: Professional
May 3, 2014
Answer: 
Yes, it will work. The engineers at Generac pre-plan the equipment and package deals.
The 50 Amp Automatic Transfer Switch is more of a subpanel transfer switch where you attach it to your main panel and move the circuits - which you want powered during a power outage - to this transfer switch.
In your MAIN Panel you will install a double pole 40 Amp breaker to feed this subpanel on utility power. ( 10
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Yes, it will work. The engineers at Generac pre-plan the equipment and package deals.
The 50 Amp Automatic Transfer Switch is more of a subpanel transfer switch where you attach it to your main panel and move the circuits - which you want powered during a power outage - to this transfer switch.
In your MAIN Panel you will install a double pole 40 Amp breaker to feed this subpanel on utility power. ( 10 Amps lower than rating. )
This generator will provide 29 - 33 Amps at 240 volts of power depending on fuel source. ( still below the 50 Amp rating. )
I'm sure they engineered the buss and switching ability above that in order to safely switch under load.
I'm not a particular fan of the 50 Amp Automatic Transfer Switch as I really liked the 100 Amp ATS that it replaced. The original 50 Amp ATS was also involved in a recall / fix BUT - from what I witnessed -they did handle the recall well. ( please note that the recall was a "function" problem and not a "threat" to have installed.)
The 100 Amp ATS does not provide you with any more power, I just liked it because I felt it was a better built product. I still keep one or two on hand for those who prefer them.
Hope this helps.
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Asked by
Bucks County, PA, USA
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Home Improvement Profile: Other
May 1, 2014
Answer: 
WE also have 100 amp service, and all is well with this transfer switch. I strongly suggest that you have an electrician, or two, come to your house to check out your usage, amp-wise, and to answer electrical-type questions, and to check the condition of your wires and box(es). If they are not in very good shape, they may suggest work to be done before you add a transfer switch. many will come to give a Read More
WE also have 100 amp service, and all is well with this transfer switch. I strongly suggest that you have an electrician, or two, come to your house to check out your usage, amp-wise, and to answer electrical-type questions, and to check the condition of your wires and box(es). If they are not in very good shape, they may suggest work to be done before you add a transfer switch. many will come to give a free estimate and answer questions you have. Read Less
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Asked by
Bucks County, PA, USA
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Home Improvement Profile: Other
May 1, 2014
Answer: 
We also have 100 amp service to the house and all is fine. I strongly suggest that you have a couple of electricians come to your house to inspect your box(es) and wires before you buy a generator. We did not, and after we had it connected to our natural gas by a plumber, we contacted the electrician the plumber had worked with. The electrician said if we had contacted him at the very beginning, he would Read More
We also have 100 amp service to the house and all is fine. I strongly suggest that you have a couple of electricians come to your house to inspect your box(es) and wires before you buy a generator. We did not, and after we had it connected to our natural gas by a plumber, we contacted the electrician the plumber had worked with. The electrician said if we had contacted him at the very beginning, he would have recommended the next larger size generator, but all is fine. They have the tools to go to your box and measure amps, etc that are in use. Fortunately our wires and boxes were updated a few years ago and all were in good shape. If they hadn't been, they would have needed work before the transfer box could be hooked up. We could only use 8 of the 10 circuits because we had 2 circuits solely for the pool pump and filter, which would use a lot, if the generator came on during pool season. They would account for more draw on the generator. All turned out ok otherwise. We have 2 sump pumps which are on 2 different circuits as well, plus a few other essentials, like the refrig, internet, my husband's home office outlets. Because we have natural gas, we can still use our gas grill and gas stove top, by lighting it. No air conditioning, but that's ok....would have needed the larger size. We are really happy that we have priority items covered. We are also switching all lights over to LEDs, which we got at Home Depot:CREE brand on sale through our town's electric company. By doing that, we will lower the drain on the generator overall considerably, especially on motion lights and spot lights.We have the auto on one, as we purchased a battery for it. We are very happy with the generator. It comes on once a week at a designated time, and runs for 12 minutes, then goes off. Highly recommend the generator (appropriate size, of course), the fascia that you can buy, and Home Depot's service. Read Less
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Customer Reviews

Rated 3.9 out of 5 by 48 reviewers.
Rated 5.0 out of 5.0 by This is well designed from product to installation instructions. This unit comes with just about every thing needed for a successful installation. I only needed one 240 volt circuit breakers for my existing service panel, gas valve,gas pipe and fittings. I needed one pipe cut and threaded. Everything was available at Home Depot. Following the installation guide was easy, it is set up so you can do as much or as little as you want to at a time. When installation was complete, I went on Genrac's web site to get the activation code. I entered the code into the controller and followed the on screen prompts. Everything works perfectly and I can't wait for the next power outage! September 25, 2012
Rated 4.0 out of 5.0 by Great price, pretty good quality Overall a great generator. I only have a couple issues. 1) there was a defective limit switch in the transfer switch which destroyed the coil. The authorized service came out quickly, but it took 3 weeks to get the parts. I would think a little better quality testing would have caught this at the factory. 2.) The manual is out of date. The transfer switch configuration is backwards from what is printed in the manual and doesn't have dual coils as shown in the manual. Again, a little quality control should have caught this. Otherwise, the generator itself started up quickly, runs like a champ, and is pretty quiet. I installed it myself, but I am very experienced in electrical and plumbing. Most should probably hire an authorized service agent to hire as the manual is somewhat technical and installation requires quite a bit of electrical and gas piping knowledge. September 20, 2013
Rated 5.0 out of 5.0 by I CAN'T WAIT TO LOSE POWER I finally got this generator up and running, now I can't wait to lose power. We generally lose power on average once a month due to squirrels eating lines and blowing transformers. In addition to that, we lose power for an extended amount of time usually 2 times a year because of ice storms or high straight line winds. The installation was pretty straightforward so I'm told, I had an electrician do it. I also had a plumber do the gas line. Could've probably done the gas myself, but it was worth hiring someone to make sure it was done correctly. About 70% of the house is covered, the things that I figure must have--refridge, freezer, furnace, microwave, Xbox, etc. What wasn't apparent to me before now was that I was getting another circuit breaker box, that's what the included transfer switch really is. So it's a bonus, I now have plenty of additional switches and circuits for when I want to add stuff like a hot tub, room additions, etc. Highly recommended. February 10, 2013
Rated 5.0 out of 5.0 by home generator the transferswitch and generator were easy for the electrican to hook up with the prewired transfer switch was already wired in the transfer switch box December 30, 2015
Rated 5.0 out of 5.0 by Great I don't have it installed yet, but have had one of these before and just loved it. September 30, 2015
Rated 5.0 out of 5.0 by Generac 8KW auto Standby generator Easy for contractor to install. Give great piece of mind! September 1, 2015
Rated 4.0 out of 5.0 by Nice, but mis-leading We thought this would be rated at 50 amps, not 35 amps. I should of read that the transfer switch was 50 amps, not the generator September 3, 2015
Rated 5.0 out of 5.0 by This product is manufactured in America. We have installed many Generac Standby systems with few problems. The warranty is excellent. These systems have a very long life. July 14, 2015
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