My Account | Cart Contents | Checkout | Contact Us  
Trex Generators Trex Generators, Factory Direct Savings, No Sales Tax, Free Freight, Hassle-Free Transaction
Quick Picks

T-Rex Recommended Generators

Advanced Search
Briggs & Stratton
Reliance Controls
My Account
Shipping & Warranty
Privacy Notice
Conditions of Use
Contact Us
About Us
Press Releases

Generac Guardian QT04524C 50 State-45kW-Single Ph-NG/LP St

…Quiet-Test Exercise Mode; Steel Enclosed

This standby generator is best suited for: 1)extra-large homes (we recommend range of 9300 to 12000 square feet); 2)small commercial warehouse or non-food retailer 2700 - 3000 square feet or less (that uses single-phase electricity).

QT045 from Generac can serve commercial or residential application. Can provide backup for extremely-large home, or whole-house standby for 4000 square feet. Will arrive from factory configured to run on natural gas, however modification for propane use is quick and easy and does not require a technician. Features 2.4-liter inline-4 engine with isochronous governor. Residential-grade muffler. Programmable quiet-test exercise mode. Standby power products must be operated with transfer equipment - consult Switch Options tab for RTS-series automatic transfer switch models, recommended for use with Guardian's Nexus controller. This backup power product
is CARB approved, available to California residents.

  • Important: Please see the shipping tab for information regarding the liftgate shipping option and residential versus commercial deliveries.

  • Write a review

    Model:  QT04524AC
    Price:  $13,529.00
    Available Options:
    Residential Shipment?:

    Model Specs

    Manufacturer: Generac
    Model #: QT04524AC
    Color: White
    Enclosure: Steel
    Engine Make: Generac
    Transfer Switch Included?: No
    Price: $13,529.00

    Rated Power (Natural Gas): 45 kW
    Rated Power (Liquid Propane): 45 kW
    Phase: 1
    Frequency: 60 Hz
    Voltage: 120/240
    Rated Amps: 188(NG/LP)
    Rotor Poles: NA
    Mainline Circuit Breaker: 200 Amps(NG/LP)

    Engine Type: Inline 4-Cylinder
    Intake Method: Carburetor
    Cylinder Block: NA
    HP/L: NA/2.4
    Number of Cylinders: 4
    Compression Ratio: 8.5:1
    Lubrication Method: Pressurized
    Valve Arrangement: Overhead
    Engine Cooling: Liquid
    Engine rpm: 3600
    Fan Type: Belt Driven
    Governor System: Electronic
    Ignition System: Electronic
    Starter Voltage (DC): 12
    Battery Required (Volts/Cold-Cranking Amps): 12/525 (Included)
    Startup Delay (After Power Interruption): Programmable (10-30 Seconds)
    Engine Warm-Up Duration: 5 Seconds
    Engine Cool-Down Period: 1 Minute
    Fuel Type: Natural Gas(NG)/Liquid Propane(LP)
    Fuel Consumption (NG @ Exercise): 65 Cubic Feet/Hour
    Fuel Consumption (NG @ 25% Load): 210 Cubic Feet/Hour
    Fuel Consumption (NG @ 50% Load): 380 Cubic Feet/Hour
    Fuel Consumption (NG @ 75% Load): 545 Cubic Feet/Hour
    Fuel Consumption (NG @ Full Load): 730 Cubic Feet/Hour
    Fuel Consumption (LP @ Exercise): 0.7 Gallons/Hour
    Fuel Consumption (LP @ 25% Load): 2.3 Gallons/Hour
    Fuel Consumption (LP @ 50% Load): 4.2 Gallons/Hour
    Fuel Consumption (LP @ 75% Load): 5.9 Gallons/Hour
    Fuel Consumption (LP @ Full Load): 8.0 Gallons/Hour

    Convenience Features
    Automatic Voltage Regulation: Yes
    Low-Voltage Shutdown: Yes
    High-Voltage Shutdown: Yes
    Low-Oil Shutdown: Yes
    Overspeed Shutdown: Yes
    High-Temperature Shutdown: Yes
    Starter-Overcrank Protection: Yes
    Low-Battery Protection: Yes
    Built-In Battery Charging Capability: Yes
    UL Listed: Yes
    External-Fault Capability: Yes
    Internal-Fault Protection: Yes
    Incorrect-Wiring Protection: Yes
    Mainline Circuit-Breaker Protection: Yes
    Safety Fusing: Yes

    Weight: 1414 lbs
    Dimensions (Inches): 76.77L x 33.5W x 45.13H
    Decibels (@ Exercise - 7 Meters): 61
    Decibels (@ Full Load - 7 Meters): 73
    Compliance: 50-State US

    Additional Features
    Programmable start delay from 10 to 30 seconds
    Factory prepped to run on NG; easily transformed in field to LP operation
    Galvannealed-steel housings coated with trademarked Rhinocoat finish for enhanced durability
    Built-in low-battery protection
    Overspeed & high-temperature shutdowns
    Internally-mounted "industrial" muffler great for residential/urban use
    Certified for California CARB operation


  • 2-year manufacturer's limited warranty

  • Shipping

    The T-REX Free Shipping Pledge:
    The manufacturers we work with are large concerns that ship multiple items each day. This enables them to attain the best shipping rates available. T-REX passes these savings on to our customers by providing free shipping to any commercial or residential address in the continental United States. This is the T-REX pledge. We will adhere to it even when a freight carrier adds one-time or unanticipated shipping fees. Try obtaining these terms from another Internet-based generator seller. You will not find a more customer-friendly policy than ours.

    About Lift Gates:
    Typical delivery trucks are designed to be unloaded at docks, or by forklifts. In other words, they are designed to deliver to commercial locations where such options are available. By contrast, a lift gate-equipped truck lowers heavy items from the truck trailer (which can be several feet high) to the ground, using a hydraulic mechanism similar to an elevator. If your delivery will go to an address not equipped with a loading dock, and you don't have access to a forklift, then selecting the lift-gate delivery option is a convenient alternative.

    A generator from T-REX can weigh hundreds of pounds. Without access to a loading dock or forklift, unloading one safely may require several able-bodied individuals. Delivery drivers are NOT required by their companies to help customers unload. Unless you are certain that a sufficient number of helpers will be available during the delivery, we urge you to specify the lift-gate shipping option before checking out. Charge for the lift-gate is $75.00, and is NOT included in the Free-Shipping Pledge offered by T-REX. We feel, however, that it is worth the investment.

    Residential Delivery:
    You need to inform us if your delivery will be going to a residential address. Freight companies need to know this because many residential areas can't be serviced by large semi trucks. The generator will instead be loaded onto a smaller truck tailored to home deliveries. A home which serves as a place of business (regardless of the presence of company name/signage), if located in a residential area, is still considered a residential address for shipping purposes. Please select the residential delivery option if applicable. T-REX agrees to pay all additional residential delivery costs, but to do so, we must be properly informed before shipping arrangements are made.

    To select your choice of residential or commercial delivery, please see the purchase options in the Add To Cart area.


    Currently viewing:  Generac Guardian QT04524C 50 State-45kW-Single Ph-NG/LP St
    Other Links:
    3-Phase Generators
    20kW Generator
    Backup Generators
    Caterpillar Generators
    Commercial Generators
    Diesel Generators
    Diesel Generators Used
    Gas Generators
    Generator for House
    Generator PTO
    Generator Standby
    Generators Home Use
    Industrial Generator
    Natural Gas Generators
    Power Generators Diesel

    T-Rex Generators distributes products from many different standby and portable generator manufacturers at substantially discounted prices. These represented companies include: Asco automatic transfer switches, Briggs & Stratton generators, Winco generators, Generac Generators, GenTran transfer switches, Reliance Controls Transfer Switches, and Zenith automatic transfer switches. T-Rex also carries Honda powered generators which have the same time-tested Honda engines as the substantially more expensive Honda generator brand units.