Model#: GRCN7039

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 120 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Generac 7039 20/18kW Air-Cooled 200SE Standby Generator (Non-CuL)

  • Generac 7039 20/18kW Air-Cooled 200SE Standby Generator (Non-CuL)
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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.

Ships in 2-3 business days

Product Overview

Additional Information


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.
  • 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
  • Up to whole house protection with the 200-amp, NEMA 3R (aluminum outdoor enclosure) smart switch
  • 5 Year Limited Warranty for automatic standby generators
  • True Power Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances
  • Generac generators are engineered in the USA and built in the USA using domestic and foreign parts
  • 20/18kW Air-Cooled 200SE Standby Generator (Non-CuL) - 7039


Decibel Rating: 66 dB
Displacement: 999cc
Enclosure Type: Aluminum
Engine Type: OHVI Engine



4.9 / 5.0
70 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Emergency Power Peace of Mind
My wife and I saved up several years to purchase a emergency generator for our home and we decided, after careful consideration of all other products, on a Generac. We could not have made a better choice. It works when needed and is quiet and efficient and does not let us down. Here where we I've, weather can be extreme and this unit gives us peace of mind knowing we will have power when needed any almost any situation. We know we made a great purchase.
July 21, 2017
Originally posted at
generac - 1, Irma - 0
had this generator (20kW) installed a month before Irma came roaring through...lost power sunday night and it ran straight until power was restored on thursday afternoon...92 straight hours,,,it used roughly 125 gals. of propane out of the 400 gals. i started with in my 500 gal. tank...oil use was negligible...performed like a champ...wish it were quieter, but the constant engine noise was a small price to pay to keep my house, including a/c up and running.
September 18, 2017
Originally posted at
This products WORKS
This is the best dependable performing Generator on the market. We ran our unit for four days straight with no problems during Hurricane Irma Never used a drop of oil. Fuel consumption was minimal for what this unit provided for us. Would highly recommend this product to any one serious about a home standby power source
September 14, 2017
Originally posted at
Very pleased. Feel secure.
Used it a few nights ago. Kicked on right away when the power went on. Unfortunately the power kept coming back on and then going out. This happened at least 3 times. The generator ran for about 5 minutes and turned off. Called the electrician the next morning, he came out, checked it over, had it running. After a few phone calls to your company, found out it needed some sort of breaker fuse. The part is ordered and soon it will be fine. The electrician is building his own home and will be installing his own.
June 1, 2017
Originally posted at
just installed on 6/12 so no chance yet to comment on actual performance.
The Install crew from Home Power Systems was absolutely first class. Courteous, very careful in all they did. Showed respect for our property inside & Out. Explains everything carefully and made sure we understood everything.

I will be recommending them whenever the situation presents itself.
June 14, 2017
Originally posted at
Excellent Product, Excellent Value
I'm a single woman who lives in a very rural area where my power goes out frequently. I hesitated to buy a generator because of the "cost". My neighbor recommended the Generac brand, and he's right! My unit is quiet, powerful, and totally automated. I wish I had bought it years ago!!!
June 2, 2017
Originally posted at
We are satisfied
We have not had a power interruption but we are confident it will function when needed
June 6, 2017
Originally posted at
Hasn't been a power outage since installation
The Generac performs its normal, scheduled test cycle each week. I am assuming when the time comes it will provide backup whole house power source
June 1, 2017
Originally posted at
Good features and appearance
Have heard good things about Generac, that is why I contacted you. The only thing, your office said the generator needs to be tested every other week, but the sales rep said it should be run every week???? Otherwise, all is good.
June 5, 2017
Originally posted at
this product provides great piece of mind
we feel that this generator adds a lot of value to our home.we have a hard time when the power goes out with water in the basement.the generac takes care of that's a lot quieter than i thought it would be and it looks great and blends right in with the landscaping.this is a great product.
June 5, 2017
Originally posted at

Questions & Answers

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What does non CUL mean?
A shopper on Jun 29, 2017



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.