Generac Protector XG04045ANAX 40kW 1 Phase Generator

Name: Generac Protector XG04045ANAX 40kW 1 Phase Generator
Brand: Generam
SKU: XG04045ANAX
Price: 23869.0 USD
Availability: OutOfStock

$23,869.00

$23,869.00 ~~$25,999.99~~

SAVE 8% Sold out

Out of stock

Product variants

Generac Protector XG04045ANAX 40kW 1 Phase Generator

$23,869.00

$23,869.00 ~~$25,999.99~~

SAVE 8% Sold out

How many watts do I need to power my whole house?"

The 24kW Generac shown here covers whole-house needs for homes around 2,000–3,000 sq ft — running central AC, fridge, furnace, well pump, and standard circuits at the same time. For a larger home or bigger AC unit, it's worth running Generac's online sizing calculator or getting a load calculation from an electrician to confirm this size fits.

What do I actually get for the price — what's the value here?"

Connectivity/mobile link — monitor and control the generator remotely from a phone app

24/7 customer support — help available anytime, especially useful during an actual outage

Free 5-year warranty — real peace of mind, since standby generators are a long-term investment

Made in the USA — often means easier parts availability and consistent build quality

How does it work when the power goes out — is it really automatic?"

Yes — this is a standby unit, meaning it's permanently installed and wired into the home's electrical panel with an automatic transfer switch. It senses an outage and starts itself, typically restoring power within 10–20 seconds, with no manual action needed.

This is my second generac as i had one in my old house, the piece of mind is priceless. Every week it exercises an every time it does i feel protected

Andrés

★★★★★

Product is excellent. Needed to do this five years ago.

Lucía

★★★★★

Have only one outage since installing and it worked like a champ! We love it. Hurricane season is here and we are confident it will perform.

María López

★★★★★

1 2 3

Generac XG04045ANAX Protector Series 40kW 1-phase Generator

Note: This unit does not include a catalyst and cannot be sold or installed in California or Massachusetts. Customers in those states should choose the catalyst-equipped version of this model instead.

The XG Protector Series liquid-cooled standby generator provides backup power to entire homes or businesses during a power outage. A Protector Series generator senses a power outage, turns on automatically, and delivers power to all large appliances and sensitive electronics. Sound output is quieter with no change in level or tone. This allows comfortable living and keeps business operating without interruption.

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.
Controller Selectable Fuel: Fuel type selection using only the controller simplifies generator installation.
Built in the USA*: Generac generators and engines are engineered and built in the USA.
*Assembled in the USA using domestic and foreign parts.
Surge Capacity: Designed to start and power large electrical loads for homes and businesses.
Generac Designed & Built Engine: Purpose-built exclusively for generator use. Utilizes the first in class, dual-valve ultra-low pressure fuel delivery system and intelligent proprietary engine controls that manage over 100 performance functions to ensure peak efficiency in all temperature ranges and elevations.
Cellular Connectivity: Reliable, constant connection enables the Generator Owner to monitor function through Mobile Link and the supporting Dealer through Fleet.
Small Footprint: Generac liquid-cooled product packs more power into a small footprint – ideal when space is a premium. The neutral styling, color and small footprint fits unobtrusively into landscaping.
Corrosion Resistant Enclosure & Frame: Aluminum enclosure, zinc plated fasteners, and electro-galvanized frame rails with powder coat provide years of corrosion protection in extreme environments.

Optional Field Installable Accessories
Please see accessories carousel below to view and purchase these accessories.

Generator Ready-Status Indicator
Push-Button Emergency Stop
NFPA 110 System Control & Remote Annunciation
Cold Weather Operation Heaters
Baseframe Blockoff
Engine Fluid Containment

Limited Time Offer

This is a Limited Time Offer, valid until July 30th or while stock lasts. Once this batch is sold out, it may take time before we restock — so don’t wait too long!

Shipping information

All orders are processed within 1 business day and typically arrive within 7–14 business days depending on your location. We also offer Free Shipping across the United States.