Skip to content
TOUGH JOBS DONE RIGHT: Serious Tools Up to 50% Off. Shop the Deals >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.

Free Gift Card on All Orders Over $100 See Details

Free Gift Card Details

$100 Order
$10
gift card
$250 Order
$25
gift card
$500 Order
$50
gift card
$1000 Order
$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 10/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
Print

Generac XG04045 40kW 4.5L Liquid-Cooled Standby Generator – Single Phase, 120/240V, Natural Gas or Propane, CA/MA Emissions Certified

Item# 6814515
Generac XG04045 40kW 4.5L Liquid-Cooled Standby Generator – Single Phase, 120/240V, Natural Gas or Propane, CA/MA Emissions Certified

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Generac XG04045 40kW 4.5L Liquid-Cooled Standby Generator – Single Phase, 120/240V, Natural Gas or Propane, CA/MA Emissions Certified

Click or Tap image to Zoom

$24,669.00

  • Shipping: 

    Free shipping (lower 48 states) - Factory shipped

  • Store Pickup: 

    Not available - online only
  • Quiet-Test™ Self-Test Mode Runs at a lower, quieter RPM for a five minute test, to ensure the system is running properly while consuming less fuel. Quiet-Test Self-Test Mode can be programmed to run weekly, biweekly, or monthly.
  • TruePower™ Technology Delivers best-in-class power quality with less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics and appliances.
  • Surge Capacity - Designed to start and power large electrical loads for homes and businesses.
  • Controller Selectable Fuel - Fuel type selection using only the controller simplifies generator installation.
  • Connected to your home's existing liquid propane or natural gas fuel supply, it kicks in automatically within seconds of determining power loss

  • Prop 65 Warning: See Details

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Warranty

  • Compare

Product Summary

Thousands of homeowners and business owners trust their Protector Series automatic backup generator to preserve their entire home and/or business during a power outage. A Protector Series generator senses a power outage, turns on automatically, and delivers power to your entire home, including all large appliances and sensitize electronics with a quieter output of sound with no change in level or tone. This allows you to continue living life comfortability and keep business operating without interruption.

What's Included

    (1) Generator
Play Item Video

Features + Benefits

  • Quiet-Test™ Self-Test Mode Runs at a lower, quieter RPM for a five minute test, to ensure the system is running properly while consuming less fuel. Quiet-Test Self-Test Mode can be programmed to run weekly, biweekly, or monthly.
  • TruePower™ Technology Delivers best-in-class power quality with less than 5% total harmonic distortion for clean, smooth operation of sensitive electronics and appliances.
  • Surge Capacity - Designed to start and power large electrical loads for homes and businesses.
  • Controller Selectable Fuel - Fuel type selection using only the controller simplifies generator installation.
  • Connected to your home's existing liquid propane or natural gas fuel supply, it kicks in automatically within seconds of determining power loss

Key Specs

AttributeSpecification

item#

6814515

Brand

Generac

Manufacturer's Warranty

5 year limited warranty

Ship Weight

1781.0 LB

Voltage

120/240

Rated Kilowatts LP

40

Surge Kilowatts LP

40

Rated Kilowatts NG

40

Surge Kilowatts NG

40

Fuel Type

Natural Gas

Engine Brand

Generac

Engine Model

Inline 4–Cylinder

Engine Displacement

4,400 cc

Noise Level

64 dB

Enclosure Material

Aluminum
AttributeSpecification

Start Type

Automatic

Full Load Fuel Consumption

5.7 GPH

Number of Outlets

0

Battery Required

Yes

Battery Included

No

Auto Shutdown

Yes

Overload Protection

Yes

Low Oil Shutdown

Yes

Hour Meter

Yes

Hertz

60

Built-in Inverter

No

Total Harmonic Distortion

Less than 5%

CARB Compliant

Yes

Product Weight

1781.0000 lb

Dimensions L x W x H (in.)

83.4 x 34.0 x 45.2 in

Reviews

Questions & Answers

Questions

Warranty

Manufacturer's Warranty

5 year limited warranty

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.