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Generac 8kW-Guardian 50 State w/100A LC-1Ph-NG/LP St

…Comes With 10-Circuit ATS, OHVI Motor

This standby generator is best suited for: 1)small to medium-sized homes (recommended for applications in range of 1200 - 1600 square feet); 2)small or home-based businesses (that require single-phase electricity).

The Generac Guardian 8 kW standby package can power adequate combination of lights and appliances in most 1500 - 2000 square-foot applications. Should power a 2-ton central AC, but not central electric heat. Count on operating from 1 to 5 large appliances simultaneously. Product is not a whole-house generator. Package includes auto transfer switch/priority load center with 10 pre-wired circuits. Also included pre-wired external connection box and conduits. Generator steel enclosed with polymer mounting pad. Pressure-lubricated OHVI engine can be field prepped to burn natural gas or liquid propane. This backup power product
is CARB approved, available to California residents.

  • Important: See the shipping tab for information regarding our liftgate option, and residential versus commercial deliveries. At present, because T-Rex is shipping Generac products direct from the company's Wisconsin-based factory, any
  • residential delivery weighing in excess of 80 lbs will require the $75.00 liftgate shipping option. Shipments to commercial addresses (non-residences) remain exempt from liftgate charges unless specified by customer.

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    Model:  6237
    Price:  $2,397.00
    Available Options:
    Type Delivery Preferred:

    Model Specs

    Manufacturer: Generac Guardian
    Model #: 6237
    Color: White
    Enclosure: Steel
    Engine Make: Generac
    Transfer Switch Included?: Yes
    Price: $2,397.00

    Rated Power (Natural Gas): 7000 Watts
    Rated Power (Liquid Propane): 8000 Watts
    Phase: 1
    Frequency: 60 Hz
    Voltage: 120/240
    Rated Amps: 29.2(NG)/33.3(LP)
    Rotor Poles: 2
    Mainline Circuit Breaker: 35 Amps

    Engine Type: OHVI™ 1-Cylinder
    Intake Method: Carburetor
    Cylinder Block: Aluminum
    HP/cc: NA/410
    Number of Cylinders: 1
    Compression Ratio: 9.4:1
    Lubrication Method: Pressurized
    Valve Arrangement: Overhead
    Engine Cooling: Air
    Engine rpm: 3600
    Fan Type: NA
    Governor System: Electronic
    Ignition System: Electronic
    Starter Voltage (DC): 12
    Battery Required (Volts/Cold-Cranking Amps): 12/350 (Not 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 @ 50% Load): 77 Cubic Feet/Hour
    Fuel Consumption (NG @ Full Load): 139 Cubic Feet/Hour
    Fuel Consumption (LP @ 50% Load): .94 Gallons/Hour
    Fuel Consumption (LP @ Full Load): 1.68 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: 402 lbs
    Dimensions (Inches): 47.9L x 25.3W x 28.8H
    Decibels (@ Full Load - 7 Meters): 62
    Compliance: 50-State US

    Additional Features
    Single-cylinder motor with Generac's trademarked OHVI technology
    Motor features 2-year or 200-hour oil-change interval
    Nexus controller the same unit employed by massive liquid-cooled QT-series models
    Easy-to-read/tri-lingual LED display of generator operating status
    Auto voltage regulation keeps electricity production to consistent +/-1%
    Can be prepped on the ground for liquid propane or natural-gas operation
    Composite mounting pad included in purchase

    Transfer Switch

    Manufacturer: Generac
    Model #: 5870
    Model Description: 100-Amp 10-Circuit Automatic Transfer Switch/Load Center (Indoor Model)
    Rating: Open
    Built-In Load-Shedding Capability?: No

    Voltage (AC): 125/250
    Phase: 1
    Frequency: 60 Hz
    Maximum Generator kilowatts: NA
    Rated Amps: 100
    Maximum Generator Amps: NA
    Maximum Utility Amps: NA
    Number of Poles: 2
    Number of Circuit Breakers: NA

    Power Management
    Startup Delay (After Power Interruption): Generator Controlled
    Engine Warm-Up Duration: Generator Controlled
    Engine Cool-Down Period: Generator Controlled
    Exerciser: Every 7 Days/12 minutes
    Minimum Run Time: NA
    Return to Utility (Retransfer): 15 Seconds
    Voltage Sensing (Normal Power Source): Yes
    Voltage Sensing (Standby Source): No
    Frequency Sensing (Standby Source): No

    UL Listing: Yes
    Weight: NA
    Dimensions (Inches): 7(Depth) x 12.5W x 26.5H
    Cabinet Type: NEMA 1

    Additional Information
    Single-pole circuits: three 15 amp 125-volt; three 20 amp 125-volt
    Double-pole circuits: one 20 amp 250-volt; one 30 amp 250-volt
    Comes with NEMA 1 indoor-rated cabinet
    Color-coded wiring for easy hookup
    Works seamlessly with generator-equipped Nexus controls
    Easily mounted near existing distribution panel


  • 3-year manufacturer's limited warranty

  • Shipping

    NOTE: all Generac residential shipments weighing in excess of 80 lbs require our $75.00 liftgate shipping charge (by Generac policy). Liftgate service is optional for commercial deliveries. This policy change does not apply to shipments from other manufacturers.

    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.


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    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.