Model # QT04524ANSX

Internet #202322377

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

Discontinued Generac

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

  • Automatic quiet-test runs at a lower RPM and uses less fuel
  • Delivers clean power with less than 5% harmonic distortion
  • True Power Technology delivers best-in class power quality

Frequently Bought Together

Product Overview

The experts in home standby generators present the Generac Guardian Series 45,000-Watt standby generator. Driven by the reliable, increased horsepower of a Generac 2.4 L automotive-style, liquid-cooled engine, the 45,000-Watt Guardian Series can provide automatic whole-house protection for larger home’s 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. 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, quiet test 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 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 rhino coat 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
  • 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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Warranty / Certifications

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Customer Questions & Answers

why can't this product be shipped to california ?

Asked by: Alan
Thank you for your recent inquiry with The Home Depot. Laws and codes in many area prohibit the shipment and use of some items. For any other questions, please call us at Customer Service 800-430-3376. Thank you for shopping Home Depot.
Answered by: THDSupport
Date published: 2015-09-20

will this unit supply power to whole house including heat pumps

I have not bought unit as yet. Trying to get info about unit and see if it will provide for my needs
Asked by: Tom1
Generac's 45kw automatic standby generator is certainly capable of supplying power to your home. However, please note that we would recommend working with a certified electrician and licensed plumber, to ensure that you are utilizing the appropriate generator and setup for your back-up power needs and existing configuration. If you have questions about a particular product, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
Answered by: Generac
Date published: 2015-09-20

What are the BTUs for this generator?

Asked by: homeowner
When operating at full load, Generac’s 45kw automatic standby generator, model number QT04524ANSX, will require 730,000 btu/hr on a natural gas fuel source, 730,800 btu/hr on a liquid propane vapor fuel source, and 5-14 inches of water column. If you have any other product-related inquiries, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
Answered by: Generac
Date published: 2015-09-20

What is the amperage output when using LP?

Asked by: mtodd
When operating on a liquid propane vapor fuel source, Generac’s 45kw Commercial Series automatic standby generator can feature an amperage output of 188 amps at 120/240V single-phase, 156 amps at 120/208V three-phase, 135 amps at 120/240V three-phase, or 68 amps at 277/480V three-phase, depending on the model number ordered. To inquire about the amperage ratings of your particular generator, please contact Generac directly at 888-GENERAC (436-3722), with your unit’s model or serial number.
Answered by: Generac
Date published: 2015-09-20
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Customer Reviews

45,000-Watt Liquid Cooled Standby Generator Steel Natural Gas is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from 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.
Date published: 2011-10-11
Rated 5 out of 5 by from 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.
Date published: 2012-11-08
Rated 5 out of 5 by from 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.
Date published: 2010-11-13
Rated 5 out of 5 by from It is everything the dealer said it would be. the power has been off 2 times in the last year and everything in my hog barn worked great.
Date published: 2011-10-07
Rated 5 out of 5 by from 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
Date published: 2011-08-31
Rated 5 out of 5 by from Our Generac has performed perfectly Outstanding product. Dependable unit. Generator has performed perfectly on several occasions.
Date published: 2014-03-27
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