Search  for anything...
Generac

Generac 18kW Home Standby Generator for home use with 200 amp transfer switch, built-in cellular connectivity, whole house generator for power backup

  • Based on 425 reviews
Condition: New
Checking for the best price...
$6,639.00 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

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

View our full returns policy here.

Availability: In Stock.
Fulfilled by Acme Tools
Arrives Apr 17 – Apr 22
Order within 10 hours and 36 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Style: 18kW Next Gen + ATS


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 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 whole home 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 for home use. 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 with 200 amp transfer switch.


UPC: ‎696471104721


Manufacturer: ‎Generac


Part Number: ‎G0073240


Item Weight: ‎426 pounds


Item model number: ‎7324


Style: ‎18kW Next Gen + ATS


Pattern: ‎Generator


Item Package Quantity: ‎1


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


Batteries Included?: ‎No


Batteries Required?: ‎Yes


Warranty Description: ‎5 Year Limited


Date First Available: August 12, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 17 – Apr 22

This item is non-returnable:

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

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • 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

    • High quality, works fantastic!
Style: 22kW + 200A Switch
Love it……..works great!
Reviewed in the United States on January 29, 2026 by Mike
    • Very happy - money well spent.
Style: 22kW + 200A 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.
    • Generator
Style: 24kW + 200-Amp Switch
Great house generator
Reviewed in the United States on February 12, 2026 by hunter88
    • It is controlled by a computer and NOT RELIABLE.
Style: 22kW + 200A 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
    • Excelente reemplazo
Style: 24kW + 200-Amp Switch
tenía una planta de 14.4 Kva y la cambié por esta, el aporte a la casa de energía se mantiene sin problema
Reviewed in the United States on February 13, 2026 by HECTOR DAO
    • Great Purchase - If you are thinking about it do it!!
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
    • Great product, bad delivery
Style: 24kW + 200-Amp Switch
Review Image by I Wonder 3902 I Wonder 3902
Review Image by I Wonder 3902 I Wonder 3902
I believe in Generac quality, I purchased a temp Generac for my daughter and à whole house gen for my wife and I. It came with a bent access panel. I tried to get a replacement panel but got the run around. Amazon offered to refund so I could buy another. I have electrician coming so didn't have time to wait and take a chance the second one will have a worse damage. The over-all unit is good and I straightened out the panel best I could and looks much better. Not perfect but better. I am looking forward to getting it connected. The fuel tanks (LP) will be here soon. Placing the pad base this week. I will keep you posted. ... show more
Reviewed in the United States on November 12, 2024 by I Wonder 3902 I Wonder 3902
    • Awesome generator!
Style: 24kW + 200-Amp Switch
Bought this Generac 24kw whole house generator to have automatic power transfer during outages, it came with a 200amp transfer switch and a bunch of useful features. It was packed well and bolted on a pallet, the cardboard carton that surrounded it was a little worse for wear but the contents were fine (undamaged). Note: the generator requires a battery but it’s not included, and if you live in cold weather country you’ll want to order the cold kit which includes a battery warmer and oil filter warmer (worth the money). Also, if you have home wireless there are several features you can take advantage of including Generac’s mobile link which allows for remote monitoring and alerts etc. (visit their site and read more there). I must say the unit is much quieter than I though it would be, I fired the unit up to initialize and we let it run for a bit while we reignited it etc., by wife was in a bedroom right next to where the unit is located and she did not hear a thing. Standing right in front of it with the covers on and shut its extremely quiet, very impressive! (Note: I’m using LP gas and I understand that is quieter than natural gas. (This generator will use either once you set it up right, just a lever to move.) overall very happy with my purchase. Had to use customer support for a few minor things, they were quick and professional. ... show more
Reviewed in the United States on June 26, 2024 by WeekendWarrior

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...