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Model # 6237
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MSRP: $2,249.00
$2,204.00
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Limited Time: Free 5 Year Bumper To Bumper Extended Warranty with the purchase of this Generac Generator
Avg. Product Review Rating: 4.9/5 (based on 12 reviews - read reviews) Write a Review - $10 Store Credit

Generac Guardian 8kW Standby Generator Pre Packaged with 50 Amp 10 Circuit ATS 6237

  • True Power Electrical Technology
  • Two Line LCD Multi-Lingual Digital Evolution Controller
  • Includes 50 Amp Pre-Wired 10 Circuit ATS
  • Electronic Governor
  • External Main Circuit Breaker, System Status & Maintenance Interval LED Indicators
  • Sound Attenuated Enclosure
  • Flexible Fuel Line Connector
  • Composite Mounting Pad
  • Natural Gas or LP Gas Operation
  • 5 Year Limited Warranty
  • UL 2200 Listed

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Details and Specifications


 The Generac Model 6237 generator provides standby power in an emergency. Installed with a Generac automatic transfer switch, it keeps your home supplied with power during a power outage, even if you are not home. The 6237 sold by Norwall Power Systems uses the state of the art Evolution Controller to handle all generator functions and ensure trouble free operation to keep the generator ready for use at all times. The Generac 8kW Guardian Generator comes with a 5 year limited consumer warranty.

Fuel choices

Standby Generators from Generac operate on either LP gas or Natural Gas and are convertible in the field to accommodate either installation. The home's current fuel supply―either natural gas or LP gas―is usually the deciding factor when selecting the type of generator fuel. LP gas installations provide 8000 watts of capacity while natural gas provides 7000 watts. Fuel consumption at half load is about .87 gallons per hour for LP gas, and about 72 cubic feet per hour for natural gas. Fuel consumption is directly related to the electrical load and varies continuously during normal operation. Required fuel pressure to generator fuel inlet at all load ranges 3.5" - 7" water column for natural gas or 10" - 12" water column for LP gas.

Engine

The 410 cc air-cooled, overhead-cam industrial engine was designed and manufactured specifically for use in Generac's standby generators. It runs at 3600 RPM and is capable of producing up to 14.8 horsepower. Engine features include "Spiny-Lok" cast iron cylinder walls for extra rigidity and durability, a fully pressurized oil lubrication system, electronic ignition, and a 2 year / 200 hour oil change schedule for extended operation before maintenance is required.

Evolution Controls

The Evolution Controller by Generac operates the standby generator. When an outage occurs, it starts the generator and instructs the transfer switch to move the house onto generator power. During operation, it constantly monitors the load and engine speed to ensure consistent, utility grade power suitable for the most sensitive of electronics. At the same time, it monitors various sensors to ensure trouble-free operation.

Other features of the Evolution Controller include a programmable exercise period which keeps the generator lubricated and extends the life of seals and bearings. It includes a smart battery charger to keep the battery charged at its optimum level, a sophisticated fault detection system, and alerts the homeowner when maintenance is required. A dealer programmable start delay allows a 2 to 1500 second startup delay to prevent starting during momentary outages and voltage sags.

An optional wireless remote allows monitoring of the generator's status from inside the home. The advanced wireless remote allows you to remotely control generator functions, set maintenance alerts and exercise cycles, and test the generator.  Mobile Link allows remote monitoring of generator status via web, email or texts.

Generator Unit

The alternator generates electricity using a revolving magnetic field design which provides better voltage regulation and higher surge capacity than a stationary field. Combined with skewed stators on a stationary armature, the generator output is clean and steady even when the load is constantly changing. The high surge capacity allows the generator to start motors, even when other appliances have the generator under load.

Appearance and Noise

The 6237 is 48 inches wide, 25 inches deep, and 29 inches high. With an eye pleasing design, an enclosure that resists corrosion, and a 62db noise level that is quieter than most central air conditioning units, this generator will fit well into any neighborhood. The unit cover opens to allow easy access for maintenance and locks with a key to prevent tampering.

Packaged with 50 Amp Automatic Transfer Switch

Pre-wired 50 amp automatic transfer switch has a 30 foot whip to connect to the provided 5 foot pre-wired whip and external connection box.  The pre-wired 2 foot whip, which is color coded, connects into the existing electrical panel.  Rated Nema 1 (indoor installation only) has a total of 10 circuits in varying amperages.  UL Listed.


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Warranty Information

Manufactures Limited Warranty: 5 Years

Product Specifications

Model
Model Number 6237
Manufacturer Generac Power Systems
Made In USA Yes
Rated Watts 8/7kW
Rated Amps 33.3 LP/29 NG
Voltage 120/240V Single Phase
A/C Ton Rating 3 Ton
Enclosure Steel
UL Listed Yes
Decibel Rating 62 db(A)
Features
Starting System Automatic
Low Oil Alert Yes
Mainline Breaker 35 Amps
Hour Meter Yes
Battery Requirement Group 26R, 12V, 525 CCA
Mounting Pad Composite Base Attached
Product Weight 360 lbs.
Shipping Weight 473 lbs.
Dimensions (Inches) 48L x 25W x 29H
Engine
Engine Brand Generac OHVI
Engine Size 410 cc
Engine RPM 3600
Cast Iron Sleeve Yes
Cooling System Air Cooled
Alternator
Alternator Type Brushed
Frequency 60 Hz
Auto Voltage Regulation Yes
Fuel
Fuel Type LP/NG
NG Power Capacity 7kW
LP Power Capacity 8kW
NG Consumption @ Full Load 121 cu.ft/hr
NG Consumption @ 1/2 Load 78 cu.ft/hr
LP Consumption @ Full Load 1.42 gal/hr
LP Consumption @ 1/2 Load .87 gal/hr
Transfer Switch
Transfer Switch Model RTG10EZA1
Transfer Switch Amps 50 Amp - Nema 1 Indoor Rated
Transfer Switch Circuits 10 Pre Wired Circuits
1-30 Amp 240V
1-20 Amp 240V
3-20 Amp 120V
3-15 Amp 120V
ATS Poles 2
Warranty Information
Consumer Warranty 5 Year Limited
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Product Reviews

Showing reviews 1-10 of 12 | Next

  1. My Review

    Posted by Ralph, WV on 8th Feb 2014

    The directions made for easy installation. Quiet operation for 3500 square foot home. Powers all necessary appliances and heat source during outages. I would recommend the cold weather package for easy start up in extreme cold outside temperatures. Technical support from Generac was not easy to obtain, but after a glitch was remedied, the generator has worked fine. Purchased in November 2012, but used for the first two times the first week in February 2014. The generator performs a weekly test cycle to keep the engine seals lubricated. I'm happy with my purchase.


  2. My Research Paid Off Huge

    Posted by Keith Robb on 28th Jan 2014

    I searched for 4 years to find the best opton for reliable house standby generator. I ruled out gasoline and propane because the original costs for containers and fuel were just too high. Just when I was about to give up I saw an article touting the reliability of utility natural gas delivery if the grid goes down. Since natural gas is not dependent on electricity for delivery I knew I was on to something. I have a 1300 square foot house, mostly gas appliances and when I gave it some hard thought I knew that natural gas was the way to go. I purchased the Generac 8kw system through Norwall who included the inverter system for $2200 delivered after running a 50 ft gas line to the backyard and having my electrician, who is highly skilled install the accompanying transfer switch, I knew I had made a good decision. If I had purchased a gasoline or propane based system I could not have purchased the fuel and containers for the cost of the generac. I must say that Norwall customer service was really good, far better in fact than the folks at Generac. If you buy from Norwall don't even bother calling Generac customer service in my opinion. I got the natural gas line installed in 1/2 a day and my ace electrician installed the transfer switch in my downstairs room, opposite the outside electrical panel and he did it in 6 hours, he is the quiet brilliant type of guy, lucky me.

    So what this got me was an 8kw standby generator that works flawlessly, self testing once a week and 3 weeks ago, we had a late night 3 1/2 power outage and in 20 seconds my generator kicked in and I happened to look out my front door and since I am on the boundry line of San franccisco, all I could see in all directions was blackness and my house was totally in operational mode. I made a good decision in selecting the perfect type of backup system that in my opinion is better than a solar system with huge battery banks for storage. I felt so smug because I am a late night guy and I had power all through the night. I swear that as the night wore on it got difficult to hear the generator at all. Lucky me I made the right decision to not turn my backyard into a fuel depot , dangerous with flammable fuel products. If not gasoline, the cost of propane cylinders is insane and the total cost to me for the generator and install was $3300. I had to pass this on and give a big shout out to the pros at Norwall who are knowledgeable and courteous and engaging. What a steal and I love patting myself on the back at the same time!


  3. Great Product Well Worth The Price

    Posted by HLP - New Jersey on 26th Nov 2013

    Purchased a 8kW Generac and installation went extremely well. First time installing one with propane fuel supply. The first one I installed had to be ordered either natural gas or propane but the newer version is unique. I also purchased a Generac 2700 pressure washer which I am very satisfied with. Although trying to get technical support from Generac leaves a lot to be desired.


  4. Very Satisfied

    Posted by Happy Customer on 1st Nov 2013

    We purchased the 8KW with 50 amp service in August and I am really pleased. It is hooked up to the natural gas that comes into the house. I have a small (1200 sq ft)house with all gas appliances and we load tested it and turned on all the appliances and the electricity stayed steady and perfect. The only thing our electrician would like is for Generac to give an extra 1 foot in the pig tail that is attached to the generator. In Massachusetts, the generator has to be 5 feet away from the house and that's all Generac gives is 5 feet. That's not quite enough. We are very happy we bought it though.


  5. Couldn't Be More Satisfied

    Posted by Doug Brookes on 30th Oct 2013

    Delivery went better than expected because I live on a hill. It installed easily and is now ready for a power outage.


  6. Revew Generac

    Posted by ron shores on 15th Oct 2013

    Recently installed. I love the way it works and I don't have to do anything when the power fails it's all automatic.


  7. Easy to install

    Posted by Gerald on 25th Sep 2013

    Easy to install and very heavy duty.


  8. NG to LPG selector knob

    Posted by philip racicot on 23rd Sep 2013

    I purchased this generator from Norwall their service and delivery were excellent and would recommend purchasing from them. However I did have some difficulty with the switch over from NG to LPG I could not move the selector knob even with the use of pliers/vise grips and some coaching from Generac factory support. I still have not been to complete the installation as I am waiting for a certified Generac service company to arrive. I called them on 09/17 they called me back on 09/18 requesting the serial # of the unit which I gave them. I called them again on 09/23 to find out the status of the order. they said they would call me back by the end of the day after they contacted the factory for more info on the issue still waiting for their call back it is 9:30 Pm Est. do not think I will be hearing from them today.

    -UPDATE- Generac took care of the problem at no charge. Extremely pleased.


  9. Update, Bill from New Jersey

    Posted by Bill, New Jersey on 1st Sep 2013

    Purchased this model# 6237 in July, 2013. Testing worked fine and I was going for a medical procedure early in the morning on August, 29. Went to bed early and the power went out at 11 pm for the first time for about an hour I didn't even notice until my wife told me.

    I went out two more times that night. The unit worked perfectly. It was raining heavy and if I didn't have this unit I would have been out of bed three times hooking up my portable generator unit. This generator paid for itself in my opinion that night.


  10. Best buy for money

    Posted by Ken P. on 29th Jul 2013

    I bought a 6237 Generac 8kW in June. Order and delivery went very smooth. I installed it this weekend with help from Jim my brother in law. Norwall is the best and so is Generac, 7/27/13. I will tell all about my experience with both companies!


Showing reviews 1-10 of 12 | Next

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All generators include 24 hour delivery notification and residential delivery. Liftgate service is available on all air-cooled generators and some liquid cooled units – Please call for verification. Free Shipping is curbside service only. Curbside service means the freight company will deliver to your address and lower your generator to the ground. The freight company will not back down driveways, place a generator in a building or where it is being installed. You are responsible for arranging the movement and setting of the generator.

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