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Generac

Generac 18kW Home Standby Generator, Cellular Connectivity, Easy To Use, Whole House Power Backup, Smart Outage Solution

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Dec 13
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Pattern Name: Generator


Style: 18kW


Features

  • Whole House Protection: Keep your family comfortable and connected during power outages. Avoid the disruption of losing refrigeration, heating/cooling, lights and connectivity of your devices with a Home Standby Generator that automatically detects an outage and delivers backup power to your home.
  • Lowest Total Cost Of Ownership: Electronic fuel & ignition control optimizes fuel use for a more cost-efficient and lower emission back-up power solution* and financing options that offer you solutions that meet your budget *On average versus Generac Guardian Series standby generators
  • Remote Monitoring & Control: Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link app whether you're home or away. Provides real-time updates and maintenance alerts right on your device.* *Requires Mobile Link premium subscription
  • Superior Reliability: Oil level sensors monitor oil level to help ensure generator readiness, support in cold climates with improved cold start performance and sloped roof & rear intake to reduce risk of ice or snow intrusion
  • Compatible with the Generac Home Energy Ecosystem: Compatible with ecobee by Generac thermostats and Generac PWRcell battery systems to seamlessly monitor & control your homes energy. Reviews on this project may contain feedback based on the 18 kW Generac Guardian Home Standby Generator.

Description

As the 1 selling home standby generator brand, Generac's Home Standby Generators provide 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 starts within seconds of sensing power loss - automatically - and runs for as long as necessary until utility power returns. Choose from just enough power to cover essential circuits or whole house coverage. This affordable automatic standby generator offers protection for about half the cost of central air conditioning. Long, best-in-class service intervals mean you spend less time on maintenance and more time enjoying the comfort that comes with owning a standby generator. Innovative engine design and rigorous testing are at the heart of Generac's success in providing the most reliable generators possible. All backed by 24/7/365 customer support and a nationwide dealer network of more than 9,000 strong.

Brand: Generac


Wattage: 18000 watts


Power Source: Fuel Powered


Recommended Uses For Product: Residential


Item Weight: 426 Pounds


Voltage: 240 Volts


Output Wattage: 18000


Special Feature: Automatic Idle Control, Dual Fuel, Fully Enclosed Design, Overload Protection, Super Quiet


Included Components: Owner's Manual


Color: No Finish


Brand: Generac


Wattage: 18000 watts


Power Source: Fuel Powered


Recommended Uses For Product: Residential


Item Weight: 426 Pounds


Voltage: 240 Volts


Output Wattage: 18000


Special Feature: Automatic Idle Control, Dual Fuel, Fully Enclosed Design, Overload Protection, Super Quiet


Included Components: Owner's Manual


Color: No Finish


Product Dimensions: 46.4"L x 26.3"W x 30.7"H


Material: Stainless Steel


Model Name: Generac 18kW Home Standby Generator cellular connectivity, easy to use, whole house power backup, smart outage solution


UPC: 696471103717


Manufacturer: Generac


Item Weight: 426 pounds


Item model number: 7259


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Dec 13

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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  • Affirm Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Very happy - money well spent.
Pattern Name: Generator Style: 22kW + 200-Amp Switch
I feel sorry for those who received damaged/dented products, so I feel lucky that my unit arrived undamaged and in perfect condition. Having said that, I see how a flimsy layer of cardboard sheet attached to the base pallet may not provide much protection during shipping. Perhaps Generac should consider investing another $25 for a fully framed out protection. Speaking of delivery, my generator arrived 90 minutes later of the delivery window's upper limit. Since it was a Saturday, there was no-one available to talk to. Phone calls went to voicemail or calling the corporate number message was "mailbox full". Keep that in mind when you schedule delivery outside of normail business hours M-F. Prepare to buy a battery (about $60) and if you live in cold climate, a cold weather kit (around $200) to keep your battery and oild filter warm during winter. None of these are included. Currently working on hooking up the unit. Already ran the gas line and the wires to the Automatic Transfer Switch (ATF). I am giving a 5 star review in anticipation of everything working out as expected. Should something not, I will come back and update my review. 30 day update: We had a 1 hr unexpecred power outage. The generator kicked off and ran just fine. Automatically turned off once the power came back on. Very happy customer. 60 day update: Additional 2 power outages, each lasting about 8 hours. Generator worked flawlessly. Fired up in 10 seconds after the outage, ran smoothly providing electricity to the entire house and turned off automatically after utility power came back on. VERY HAPPY - money well spent. ... show more
Reviewed in the United States on July 22, 2024 by Ted O.
    • Runs quietly. Able to monitor via WiFi & app.
Pattern Name: Generator Style: 14kW + 200-Amp Switch
Review Image by James James
Review Image by James James
Review Image by James James
Review Image by James James
Was surprised at how quiet it runs. It is also able to run our central A/C, water heater and stove all at the same time along with most of the house. I highly recommend using a certified Generac installer to do the installation. They handled getting all of the permits & inspections needed for the installation. The Generac app was also helpful in allowing to monitor the status and to schedule weekly exercises for the generator to keep it in top running condition year round. Also you will need to buy this to cover up the four corner lifting holes on the bottom of the Generac. https://www.amazon.com/dp/B0CXCNHCXJ ... show more
Reviewed in the United States on June 30, 2025 by James James
    • Great Purchase - If you are thinking about it do it!!
Pattern Name: Generator Style: 24kW + 200-Amp Switch
Started out not so good - shipping company called me the morning of the delivery and told me that the unit was too damaged to deliver. I did appreciate that being done before delivery and having to go through the order process again. Order was placed again and another shipping company delivered with no damage or issues. They even placed the pallet in my garage. Other shipping vendors wanted to charge a whole lot extra to place anywhere besides the street. Amazon did give me a $50 credit. Once installed, the unit has worked flawlessly and is a huge sigh of relief for this homeowner who lives on the Gulf Coast. Buy the unit separately and DIY an install or find Ana contractor who will give you an install only price. You will save thousands as opposed to buying from one of those huge generator outfits. ... show more
Reviewed in the United States on June 14, 2025 by mjlevan
    • It is controlled by a computer and NOT RELIABLE.
Pattern Name: Generator Style: 22kW + 200-Amp Switch
I have owned a number of whole house Generators both diesel and propane that were reliable. If you want Reliability this is NOT IT. WHY? It has an onboard COMPUTER! It will NOT Run without the Computer. It WILL NOT START UNLESS IT IS ON Wi-Fi. Think EMP or Power Surge, either will knock out the fragile COMPUTER. Oh, they do sell a surge protector, but it won't protect the COMPUTER from lightning. Generac advertises you can monitor it from your phone. TRUE if you pay $70.00 a year for the app. The app wants to sell you filters and parts. If you want a generator for your mountain cabin or hunting camp you MUST have Wi-Fi to start it. If you want something reliable this is NOT it. This Generator with a COMPUTER was designed as a 7th grade science project that did not get honorable mention. Generac has lost its way. ... show more
Reviewed in the United States on August 21, 2025 by no
    • Backup power
Pattern Name: Generator Style: 10kW + 100-Amp Switch
Seems like a great product. The electric has not went of for it to be properly tested.
Reviewed in the United States on September 18, 2025 by Jesse Shackleford
    • Proper hookups
Pattern Name: Generator Style: 22kW + 200-Amp Switch
Great product
Reviewed in the United States on November 8, 2025 by Jon Cushine
    • Real Bargain
Pattern Name: Generator Style: 14kW + 200-Amp Switch
This is great. The only thing I would change is to have the option of a 100amp transfer switch.
Reviewed in the United States on October 5, 2025 by Karen Czadzeck
    • Delivery Company is Horrible!!!
Pattern Name: Generator Style: 26kW + 200-Amp Switch
The generator is fine. The delivery company SUCKED!!! It took 10 days to get it delivered after it was in town. I never could talk to anyone just an AI live chat! You need to fix that for large items.
Reviewed in the United States on August 26, 2025 by Darin G.

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