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Generac 3900 W Gas/LP Inverter Generator
Generac 3900 W Gas/LP Inverter Generator
Generac 3900 W Gas/LP Inverter Generator
Generac 3900 W Gas/LP Inverter Generator
Generac 3900 W Gas/LP Inverter Generator
Generac 3900 W Gas/LP Inverter Generator

Generac 3900 W Gas/LP Inverter Generator

Runs on gas or propane and puts out clean inverter power for backup, camping, or job site use.
Generac MPN 8945 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $961.99. Our online price is $1,069.00.
$1,069.00
Ships $39.99 flat · large item
Ships within 24 hours · most orders arrive in about 2 business days
Heavy item · ships $39.99 flat Large items cost more to ship. Prefer to skip it? This is one to grab locally — no box, no shipping. Check your local store below ↓

About Product Overview

The Generac 3900W Inverter Generator runs on your choice of gasoline or liquid propane, giving you flexibility whether you're topping off from a gas can or swapping in a propane tank. Inverter technology means cleaner, more stable power than a standard generator, so it's a solid choice for sensitive electronics, RV hookups, or job site tools that don't tolerate power fluctuations.

Built around a Generac OHV engine, it's sized for backup power at home, weekend camping trips, or tailgates where you need more than a small recreational unit but don't want to haul around a full-size generator. At 122 pounds, it's manageable for one or two people to move and load, and the compact footprint makes storage in a garage or shed straightforward.

  • 3900W output
  • Dual fuel: runs on gasoline or LP
  • Generac OHV engine
  • 120V power output
  • Inverter technology for stable, clean power
  • Weighs 122 lbs

The Details Specifications

Special Handling Special handling and shipping requirements apply. UN #UN3528.
Non-Returnable This product cannot be returned. All sales final.
Brand Generac
UPC 696471103786
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Dimensions (L × W × H) 22 × 26 × 24
Weight 122 lbs
Country of Origin VIETNAM
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to open the other tab. Everybody does. We'd rather say so than pretend otherwise — so open it. We'll wait.

When you're over there, check four things before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Generac. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

We're not always the cheapest.

Sometimes you'll find it for less. Sometimes you'll find it for more. On a lot of brands the number is identical everywhere it's sold legitimately — the manufacturer sets a minimum advertised price and every authorized dealer holds it. When a price sits well under that, it's worth asking why before it's worth celebrating.

How pricing actually works
Authorized dealer · Generac

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