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Kohler KG125R-QS4 125KW 277/480V 3-Phase Standby Generator Steel New

KohlerModel KG125R-QS4

Kohler KG125R-QS4 125KW 277/480V 3-Phase Standby Generator Steel

  • Peak125 kW
  • Running100 kW
  • FuelNG / LP
  • StartAutomatic
Black Friday price
$28,579.00

Price from December 1: $32,869.00

Black Friday price ends in —

In stock Ships within 24 hours

Free delivery Wed, Nov 18 – Mon, Nov 23 if you order today, by Expedited LTL freight to your curb or driveway.

Other versions of this model

This one$28,579.00KG125R-QS · 240V$28,389.00KG125R-QS1 · 240V · Aluminum$29,049.00KG125R-QS2 · 208V$28,579.00KG125R-QS3 · 240V$28,579.00
  • Free shipping48 states + DC
  • 30-day returnsReturn shipping on us
  • Full warrantyBrand-new, from the maker
  • Secure checkoutEncrypted by Stripe
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Questions before you buy? Our small team in New York answers every message personally. Email support@acrepower.com

Reliable power for very large residential or small business needs.

Running watts
100,000 W
Starting watts
125,000 W
Start
Automatic
SKU: KG125R-QS4
Category: , , ,

Reliable power for very large residential or small business needs. Built to weather the storms, our largest natural gas/liquid propane generators with industrial-grade engines keep your family comfortable and your business running when a utility failure or storm knocks out power.

Full specifications

BrandKohler
ModelKG125R-QS4
Running watts100,000 W
Starting watts125,000 W
StartAutomatic
How it shipsExpedited LTL freightTo your curb or driveway, free
Order today, deliveredWed, Nov 18 – Mon, Nov 23Leaves our warehouse within 24 hours

It travels on a pallet. The carrier calls ahead to book a delivery window; please have help on hand to move it.

  1. Answer the carrier’s call to book your delivery window.
  2. Keep a clear, level spot on your driveway or at the curb for unloading.
  3. Have help on hand. Freight drivers don’t carry items onto your property.
  4. Inspect before you sign and photograph any damage. Tell us within 48 hours.

We ship to the 48 contiguous states and Washington, DC. Shipping details · 30-day free returns

Brand-new, with the full manufacturer’s warranty. The terms are set by Kohler and included in the box. If something goes wrong, contact us first: we confirm the next steps within 2 business days and help you file the claim.

Home standby checklist
  • Installation is not included. Use a licensed electrician and, for the gas line, a licensed gas contractor, with local permits.
  • Register the unit with the manufacturer after installation; some brands shorten the warranty if you don’t.
  • Keep the paperwork: order confirmation, installer’s invoice and permit sign-off.
  • Follow the maintenance schedule in the owner’s manual.

How warranty claims work

What it can run

100,000 W running, 125,000 W starting

Pick what you want to power at the same time.

Typical wattages - check the label on your own appliances. Where only one figure is published, running watts are estimated at 80% of the starting figure. Connect to house circuits only through a transfer switch or interlock fitted by a licensed electrician.

Compare similar generators

Same power class, side by side.

SpecificationKohler KG125R-QS4 125KW 277/480V 3-Phase Standby Generator SteelThis generator$28,579.00Cummins RS125 125kW Standby Generator Quiet Connect Dual Fuel Propane Natural Gas Liquid Cooled 1 Phase 120/240V$29,039.00Generac RG13089JNAC 130kW Standby Generator Liquid Cooled Dual Fuel Natural Gas Propane 120/240V 3 Phase$26,369.00
Running watts100,000 W100,000 W104,000 W
Starting watts125,000 W125,000 W130,000 W
FuelNatural gas or propaneNatural gas or propaneNatural gas or propane
StartAutomaticAutomaticAutomatic
LinkYou are hereView →View →

Questions and answers

Answered by our team in New York. Can’t find yours? Ask below.

Can I connect this generator to my house?
Only through a transfer switch or an interlock kit installed by a licensed electrician. Never plug a generator into a wall outlet: it can back-feed the utility line and endanger line workers. Connecting safely.
What can it run at the same time?
Use the What it can run planner above: tick your appliances and it checks both the running load and the start-up surge against this generator.
Does it ship with oil?
It depends on the manufacturer. If oil is included it is listed under What’s in the box; otherwise use the grade given in the owner’s manual before the first start.
Can I use it in the rain?
Not uncovered. Run it on a dry surface under an open, canopy-like cover, at least 20 feet from doors, windows and vents, and never in a garage.
Is installation included?
No. A home standby generator needs a licensed electrician, a licensed gas contractor for the fuel line and local permits. Delivery to your curb or driveway is free.
How will it be delivered?
Free, by Expedited LTL freight to your curb or driveway, usually within 2–5 business days after it ships. It travels on a pallet. The carrier calls ahead to book a delivery window; please have help on hand to move it.
What if it arrives damaged?
Photograph it and email us within 48 hours of delivery. We replace or refund damaged items at no cost to you.
Ask a questionWe reply personally by email.

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