Free Shipping and No Hassle Returns
Free Shipping
We offer free shipping on orders over $199.*
No Hassle Returns
Don’t like it? Send it back. It’s that simple.*
Same Day Shipping
Most orders ship same day if placed by 5PM EST (M-F)
*Restrictions Apply. See Details »
Model#: GRCN5837

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
Open Box
New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Generac 5837 Core Power 7kW 120/240V Single Phase Air-Cooled Standby Generator with EZ Transfer Switch (CARB)

  • Generac 5837 Core Power 7kW 120/240V Single Phase Air-Cooled Standby Generator with EZ Transfer Switch (CARB)
Free Freight Shipping »
(continental U.S.)

Freight Orders

Freight deliveries require a delivery time be scheduled and someone must be present at the time of delivery to inspect and sign for the merchandise. A representative from the freight carrier will call the phone number entered at checkout to schedule the delivery.

Liftgate Service

For freight deliveries, you have the option of adding a liftgate to your delivery. A liftgate is the device that lowers a product from the truck to ground level.

CPO recommends adding liftgate service for freight deliveries exceeding 100 lbs if you do not have a loading dock or fork lift at the delivery address. Additional charges may apply. The liftgate option will be presented during the checkout process.

Please note that liftgate service only ensures the product is removed from the truck. We recommend you have the additional help of two to four people to move the product to its desired location because drivers are not required to assist.

Requesting liftgate service after ordering may result in additional charges and delays.

This item is no longer available.
Give us a call, we're here to help.
Add to Cart


Generac's new 7kw CorePower automatic standby generator is a complete generator and transfer switch system, priced more affordably than any other system in the market. It makes choosing an automatic generator over a portable the obvious choice to manage power outage. The compact design is engineered for easy maintenance and serviceability, and is ideal when space is at premium.
  • Prepackaged system - 7 kW standby generator is prepackaged with a 50 Amp transfer switch with eight circuit load center including breakers
  • Easy installation and the best value on the market
  • Generac OHV engine is designed for reliability and long life
  • At least 10 dB(A) quieter than competitive units and significantly quieter than a standard portable generator
  • Simple field conversion from liquid propane to natural gas
  • Easy installation and maintenance - sides are quickly removed without tools for easy accessibility during initial installation and ongoing maintenance.
  • Digital controller with LED status and fault indicators
  • All-weather composite enclosure withstands the harshest environments, including coastal areas
  • Lightweight and compact - lighter than comparable units so placement is easier and compact footprint fits in tight spaces
  • Composite mounting pad included eliminating the need to pour a concrete base
  • CARB compliant for use in California
  • Good Housekeeping Seal of Approval
  • 8 Circuit EZ Switch With Built-In Load Center
  • 1 ft. Flexible Fuel Line Connector
  • Composite Mounting Pad
  • Instruction Sheets


Series: CorePower
Length: 24 in.
Width: 30 in.
Depth: 33 in.
Weight: 250 lbs.
Amperage (LP Vapor): 29.2
Amperage (Natural Gas): 25
CARB Compliant: Yes
Cooling System: Air
Enclosure Type: Steel
Engine Displacement: 432cc
Engine Make: Generac
Engine Model: OHVI
Engine Speed (RPM): 3600
Fuel Consumption at 100% Load (LP Vapor): 1.26 gal/hr.
Fuel Consumption at 100% Load (Natural Gas): 148 cubic ft/hr.
Fuel Consumption at 50% Load (LP Vapor): 0.99 gal/hr.
Fuel Consumption at 50% Load (Natural Gas): 85 cubic ft/hr.
Fuel Type: Propane (LP Vapor) / Natural Gas
Motor Phase: 1
Noise Rating (dBA): 67
Rated Watts (LP Vapor): 7000
Rated Watts (Natural Gas): 6000
Transfer Switch Included: Yes
Voltage: 120/240V
Voltage Regulation: Automatic



4.9 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend?
Yes (10)
Powerful (6)
Yes, I would recommend this to a friend
Perfect Size!
This Generac standby generator is awesome and provides even more than I had expected. I can now power my home in the event of a electrical outage and no longer have to lug a rolling generator in the snow, etc. to attain the comforts of home.
February 1, 2011
Yes, I would recommend this to a friend
Great Product
If you can do electrical this is the product for you. It has everything you need except control cable (thermostat wire 5 conductor) from the outside unit to the transfer box and also the Power cable for the generator output( I used 6-2 w/G UG direct burial) Good directions. Easy install, good design.
I had never installed a generator before.
May 10, 2011
Yes, I would recommend this to a friend
Best investment ever made !!
Used for my home, everything about it is great had for months now with no problems. Will power allot more in the home than you think. Dont let installer sell you more than you need !! Only problem I have with it is, its not Gold plated like it should be !! =)
June 20, 2011
Yes, I would recommend this to a friend
Looks good -works well.
I bought this unit to act as a stand-by source for our home in the mountains. Commercial power here is subject to interruption about 2-3 times a week but most are not of long duration. This unit has been very reliable after 6 mounts of use. Propane usage has been as expected. The included auto switchover works well. I did my own installation (I am a PE) in conjunction with a major addition to the house. Because of that, I was able to redirect essential circuits to not exceed the 7KW that this unit can supply. Particularly useful were the feed-through lugs on the auto-transfer panel that allowed me to power a existing subpanel in the old section. We cook and heat with gas so the major loads are lighting, referigeration and water pump. Those loads are easily handled by this unit. Even though we are at 5600', the max load test did not indicate a significant reduction in available output. I can recommend this unit.
July 15, 2012
Yes, I would recommend this to a friend
Great Unit
Keeps Fridge, Heat ,Lights and some appliances running kicks right in and goes off when finished. Overall a very good unit.
June 30, 2012
Yes, I would recommend this to a friend
Cool with the power out most of the week
Recent power outages in Chicago left me the only one on the street with lights, air, and television. Perfect automatic on and off.
July 11, 2012
Yes, I would recommend this to a friend
Nice unit . . .
Works great. This unit comes with NO wiring, thus installation is trickier. I installed this unit myself. Was fun project, but took me a good while. I had a licensed electrician look over my work. The only problem was, the transfer switch shipped with a bad 50 amp circuit breaker that I never would have figured out. Make no mistake, this unit is NOT quiet. You can have a conversation next to it while it is running, but you need to raise your voice some. We have not had a prolonged outage, but if we did, I have no doubt it would get old very quickly listening to that thing drone on. I have no doubt to get one whisper quiet would cost a fortune.
July 15, 2012
Yes, I would recommend this to a friend
Plenty of power to run the essentials
All in all was pretty fast and easy from purchase to installation.
June 30, 2012
Yes, I would recommend this to a friend
Outstanding product
Love product second one I did this year with no issues
October 1, 2013
Yes, I would recommend this to a friend
Great generator
Good power in small package
October 12, 2014

Questions & Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 6 answers
i have read about about these engines putting the rod out the side of the case and now i have the same problem. What do i do? I had less than 100 hours including weekly run.
bill on Jan 1, 2016
BEST ANSWER: Please contact the manufacturer direct at 1-888-436-3722 for technical assistance.
What type of oil do I use? Automotive 100 or 5w30
Jolene on Nov 30, 2014
BEST ANSWER: Most generators requires a 5W30 viscosity however, we recommend referring to your owners manual to be certain. If you do no have a manual, please contact Generac directly at 1888-436-3722
Would you help me where the spark plug is located for model 5837?


Ken on Jul 8, 2013
BEST ANSWER: Here is the link to the engine manual for this generator.
You can find the information concerning the spark plug by downloading 0J0194 item number, EV LV432 ENGINE manual.
Can the RTS14EZA1 transfer switch be used with this generator and replace the transfer switch that comes with this unit
Tony on Nov 2, 2012
BEST ANSWER: The RTS14EZA1 is too large. This 7KW generator is only designed for use with it's included switch.
I see the unit comes with a trans switch
and I have been told I can use it either natural gas or LP.
My question is if I use it with natural gas do I need a regulator to control the gas flow
and also what size gas pipe do i need coming from the house.
Bobby on Oct 31, 2012
BEST ANSWER: Gas flow is regulated by the generator, but to determine the correct pipe size you must first determine the pressure you have. this can be done by a qualified plumber.
How long (how many days) can I run this product without interruption?
BEST ANSWER: It should be serviced after every 200 hours of use, basically like getting an oil change in your car...



For a period of two years from the date of the original sale Generac Power Systems, Inc (Generac) warrants that its standby generator will be free from defects in material and workmanship for the items and period set forth below. Generac Power Systems, Inc, will, at its option, repair or replace and part(s) with, upon examination, inspections and testing by Generac Power Systems, Inc. or an Authorized/Certified Generac Dealer is found to be defective. Any equipment that the purchaser/owner claims to be defective must be examined by the nearest Authorized/Certified Generac Dealer. This warranty applied only to Generac emergency automatic standby generators used in "Standby" applications as Generac Power Systems, Inc has defined Standby. Scheduled Maintenance, as outlined by the generator owner's manual, is highly recommended. This Scheduled Maintenance should be performed by an Authorized/Certified Generac Dealer. This will verify service as been performed on this unit throughout the warranty period.

**This warranty applied to units installed in the US and Canada. Contact the Warranty Department for specific information on installations in International Markets.**




  • Warranty begins upon the successful registration of the unit.
  • Proof of Purchase and Maintenance must be available.
  • Warranty only applied to permanently wired and mounted units.
  • Warranty is transferable between ownership of original installation site.
  • any warranty repairs and/or concerns, must be performed and/or addressed by an Authorized/Certified Generac Power Systems Service Dealer, or branch thereof. Repairs or diagnostics performed by individuals other than Generac authorized dealer not authorized in writing by Generac Power Systems will not be covered.
  • A Generac Power Systems, Inc Transfer Switch is to be used in conjunction with the generator set. If a Non-Generac Transfer Switch is substituted for use and directly causes damage to the generator set, no warranty coverage shall apply.
  • All warranty expense allowances are subject to the conditioned defined in Generac's General Service Policy Manual.
  • Covered warranty labor rates are based on normal operating hours. Overtime, holiday, or emergency labor costs for repairs outside of normal business hours will be the responsibility of the customer.


  • Any unit built/manufactured prior to July 1, 2010.
  • Generac generators that utilize non-Generac replacement parts.
  • Cost of normal maintenance (i.e. tune-ups, associated part(s), adjustments, loose/leaking clamps, installation, and start-up.
  • Units sold, rated or used for "Prime Power", "Trailer Mounted", or "Rental Unit" applications as Generac Power Systems has defined Prime Power, Trailer Mounted or Rental Unit. Contact a Generac Power Systems Distributor for Prime Power, Trailer Mounted, or Rental Unit definitions.
  • Units used for prime power in place of existing utility power (where utility power is present) or in place of utility power where utility power service does not normally exist.
  • Damage to generator system (including transfer switch) caused by improper installation or costs necessary to correct installation.
  • Fuel connections other than conventional utility company supplied natural gas systems or conventional LP vapor withdrawal systems.
  • Any failure caused by contaminated fuels, oils, coolants/antifreeze or lack of proper fuels, oils, or coolants/antifreeze.
  • Failures due, but not limited, to normal ware and tear, accident, misuse, abuse, negligence, misapplication, or improper installation.
  • As with all mechanical devices, the Generac engines need periodic part(s) service and replacement to perform as designed. This warranty will not cover repair when normal use has exhausted the life of a part(s) or engine.
  • Products hat are modified or altered in a manner not authorized by Generac in writing.
  • Damage related to rodent and/or insect infestation.
  • Failures caused by any external cause or act of God, such as collision, theft, vandalism, riot, or wars, nuclear holocaust, fire, freezing, lighting, earthquake, windstorm, hail, volcanic eruption, water or flood, tornado or hurricane.
  • Any incidental, consequential or direct damaged caused by defects in materials or workmanship, or any delay in repair or replacement of the defective part(s).
  • Overnight freight or special shipping costs for replacement part(s).
  • Telephone, cell phone, facsimile, internet access or other communication expenses.
  • Living or travel expenses of person(s) performing service, except as specifically included within the terms of a specific unit of warranty period.
  • Rental equipment used while warranty repairs are being performed and/or overnight freight costs for replacement part(s).
  • Expenses related to "customer instruction" or troubleshooting where no manufacturing defect is found.
  • Costs incurred for equipment used for removal and/or reinstallation of generator (i.e cranes, hoists, lifts, etc).
  • Planes, ferried, railroad, buses, helicopters, snowmobiles, snow-cats, off-road vehicles or any other mode of transportation deemed abnormal.
  • Starting batteries, fuses, light bulbs, and engine fluids.

THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED. SPECIFICALLY, GENERAC MAKES NO OTHER WARRANTIES AS TO THE MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Any implied warranties which are allowed by law, shall be limited in duration to the terms of the express warranty provided herein. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. GENERACS ONLY LIABILITY SHALL BE THE REPAIR OR REPLACEMENT OF PART(S) AS STATED ABOVE. IN NO EVENT SHALL GENERAC BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF SUCH DAMAGES ARE A DIRECT RESULT OF GENERAC'S NEGLIGENCE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation does not apply to you. This warranty gives you specific legal rights. You also have other rights from state to state.