Generac 45,000-Watt Liquid Cooled Standby Generator (Steel Natural Gas)-QT04524ANSX at The Home Depot
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Model # QT04524ANSX

Internet # 202322377

45,000-Watt Liquid Cooled Standby Generator (Steel Natural Gas)

Generac 45,000-Watt Liquid Cooled Standby Generator (Steel Natural Gas)

This item has been discontinued.
The Home Depot no longer carries this specific product.

$12,131.00 / each
Item cannot be shipped to the following state(s): AK,CA,GU,HI,MA,PR,VI


In Stock



Model # QT04524ANSX

Internet # 202322377

Store SO SKU # 1000033112

The experts in home standby generators present the Generac Guardian Series 45kW standby generator. Driven by the reliable, increased horsepower of a Generac 2.4L automotive-style, liquid-cooled engine, the 45kW Guardian Series can provide automatic whole-house protection for larger homes, or essential circuit protection for small and medium businesses such as pharmacies, restaurants and municipal buildings. Choose from a variety of transfer switches to meet any need, including the Nexus Smart Switch. Engineered with Generac’s Digital Load Management (DLM) technology as standard equipment, the Nexus Smart Switch allows for more coverage with a smaller generator through smart load management. The Guardian Series is America’s #1 selling family of home standby generators. They run on your existing natural gas or LP fuel supply, and kick in automatically within 10 seconds of determining utility power failure. UL/CUL Listed. This item cannot be returned.

  • Patented, QuietTest mode is a neighborhood-friendly self-test that runs quieter, uses less fuel, and emits fewer emissions than other brands, and you can schedule whenever you choose with user friendly digital controls
  • Generac's Nexus Controller is the most comprehensive available, with a dual line, tri-lingual LCD display for easy monitoring and management of generator functions, including runtime and maintenance intervals
  • Sturdy galvanneal steel enclosure with RhinoCoat paint finish delivers superior weather protection
  • Engine runs on your home’s existing natural gas or LP fuel supply for continuous, worry-free operation Flexible fuel line included
  • Transfer switch and battery(Group 26, 12 Volts and 525 CCA minimum) must be purchased separately
  • Not for sale in California or Massachusetts. Reference Model QT04524ANSC / Internet #202322378 for use in those states
  • MFG brand name : Generac
  • MFG Model # : QT04524ANSX
  • Click on the “More Info” tab to download the specifications pdf to view the refer a friend rebate for the $50 savings
  • Allow 30 days shipping
  • Crane required for delivery

Info & Guides

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Assembled Depth (in.)  33.5 in  Assembled Height (in.)  45.1 in 
Assembled Width (in.)  76.8 in  CA (CARB) Compliant  Not CARB Compliant 
Certifications and Listings  1-UL Listed,CSA Listed  Color Family  Beige 
Commercial / Residential  Commercial / Residential  Continuous Wattage  45000 
ENERGY STAR Certified  No  Engine Displacement (cc)  2.4 
Engine Make  OEM Branded  Engine manufacturer  Generac 
Height (in.)  45.1  Hour Meter  Yes 
Low oil shutdown  Yes  Manufacturer Warranty  2 years limited 
Operational volume (dB)  73.0  Product Height (in.)  45.1 
Product Length (in.)  76.8  Product Weight (lb.)  1558 lb 
Product Width (in.)  33.5  Remote Monitoring  Sold Separately 
Response time (sec.)  20  Returnable  Non-Returnable 
Width  33.50 


Rated 5 out of 5 by 6 reviewers.
Rated 5 out of 5 by Our Generac has performed perfectly Outstanding product. Dependable unit. Generator has performed perfectly on several occasions. March 27, 2014
Rated 5 out of 5 by Great units and quiet We own four of these models and they have been exceptional, we have two office locations where one of each is located and in that rual area we have power outages all the time though the power company has gotten better since the storm. However outage do occur, down time is not a option for our web development and hosting company. The Generators we have are about three years old and still doing great we do regular oil changes. I'm a electrician and the installation was pretty easy at my home and the office buildings. Fuel consumption is really good. I do recommend buying a generator that is i bit larger then what you need at this time. This is because we have added on to our house twice and I have a shop next to my house and these are expensive investments so doing it once is the way to go . The great thing is, even if you buy bigger then you need right now. It just mean the alternator aka generator does work as hard under load. Just make sure you purchase the right size. I've had to tell a few people they bought the wrong size for what they want to do. The other two generator operate the whole house not just the freezer and washing machine. The stove is 220 the heating unit and AC is 220 the hot water heater is 220 the dryer is 220. Just do your homework and you will be well pleased. November 13, 2010
Rated 5 out of 5 by Godsend Just had it running a full week thanks to Hurricane Sandy. Worked great -- although stopped for oil (lubricant) after five days. Fed it four quarts and we were back to the races. Can't imagine how awful the week would have been without it. November 8, 2012
Rated 5 out of 5 by One of the best investments that my wife and I have ever made. In the 30 plus years that my wife and I have lived in our house, we have experienced many power losses including an ice storm in which we went without power for 37 days. The Guardian whole house generator has within the last several years in which we had several major power interuptions has worked without fail. It has proven highly dependable during the many short periods of power loss that we have experienced as well as two major outages over 7 days. Compared to the ice storm experience, it is great to not only have warm showers, but to enjoy hot coffee and breakfast in the morining and hot meals in the evening. As we have now entered into retirement, my wife and I highly recommend the Guardian whole house generator that results in the avoidance of having to worry about keeping the house comfortable in both cold and hot weather while carrying on with our normal daily lives. The generator not only requires very low maintance, but the panel on the front of the unit quickly provides you the necessary information as to the status of the unit's operation. I give a "well done" to the Generac Company. October 11, 2011
Rated 5 out of 5 by Excellent producy After getting hit by Hurricane Irene, we were without power for 3 and a half days. This generator ran out entire house and we didnt miss a beat. Worth every penny August 31, 2011
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Curbside Truck Shipping (By Appointment) includes delivery to receiving area/dock for businesses or curbside for residential orders. The carrier will contact you to make a delivery appointment with a 4 hour window once the items have arrived at the local hub in your area. Delivery appointments are required.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.