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48kW Protector QS

Model #RG048

Starting At

$14,699.00 Where To Buy

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Generac Protector 48kW QS Standby Generator

Automatic Backup Power For Large or Custom Homes
Looking to back up your entire home, or more items than usual? Consider the Protector gaseous automatic backup generator line. These units powers essential appliances and modern technologies during power outages, allowing homeowners and their families to continue living life comfortably and without interruption.

What Makes the Protector Series Such a Great Choice?
Generac's Protector Series offers benefits that competitors can’t match. Installation flexibility and cost reduction. Sophisticated, yet intuitive controls. Quiet operation. Supported by a 24/7/365 customer support team at our corporate headquarters, and a nationwide dealer network of more than 6,000 strong.

The best liquid cooled engine packs more power into a smaller footprint - ideal when space is a premium.  The neutral styling, color and small footprint fits unobtrusively into landscaping. Clean burning, continuous fuel choice of natural gas to LP.

True Power™ Technology
Delivers best-in class power quality with less than 5% total harmonic distortion (THD) for clean, smooth operation of sensitive electronics and appliances.

Evolution™ Controller
A cutting-edge, intuitive control. The Evolution controller features a multilingual, two-line LCD text display with color-coded, backlit buttons. It has received upgrades, including USB flash capability, smart battery charging, voltage adjustment, and backlit membrane pad style buttons.

5-year limited warranty with extended warranty options available
We are proud of our innovative product design, high quality and first-class reliability so we stand behind them with a strong 5, 7 or 10-year limited

Can Be Installed Just 18" From a Structure
Capability to be installed 18 inches away from a structure, ideal for areas with tight lot lines.  Generac’s is the only manufacturer of standby generators to have 18” offset on most of its residential lineup.

Tough, Durable All-Aluminum Enclosures
Our RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions.

Quiet-Test™
All backup generators run a weekly test to ensure the system is running properly. Thanks to Quiet-Test, your Protector Series home generator runs its self-test at a lower, quieter RPM, which can be programmed to run weekly, bi-weekly, or monthly.

Mobile Link™ Remote Monitoring
Mobile Link is the cellular remote monitoring system from Generac that allows you to check your generator’s status from anywhere in the world using your computer, tablet or smartphone.

Additional Features
Improved stub ups and electrical connection access decrease installation costs. All connections are dual conductor rated, and the implementation of quick connects for the control wires, completely eliminates the need for crimping or lugging.
Improved customer connection access, which decreases installation costs.

Generac <strong>Protector 48kW QS </strong>Standby Generator

Home Generator Buyer's Guide

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Enjoy writing your review!

Rated 5 out of 5 by from This Generac is very reliable. I was reluctant to follow my electrician's advice to purchase a Generac for my new home. I opted for the 48Kw with the 5.4 Liter engine to power my entire 6,200 sq. ft. home with pool etc. I am so glad I did. Almost 3 years later, it has never failed! Our area typically loses power 3-5 times per year anytime from 1 minute to 8 hours. All I notice is the 15 second delay necessary for the engine to crank and generate. My neighbors all regret not installing one while they were building their homes.
Date published: 2017-10-05
Rated 5 out of 5 by from QS 48 Living in a rural area power outages are a never ending problem. I had this system installed in early 2012. This has been a flawless unit. Keep it clean and properly serviced for reliable power when it's needed. After hurricane Irma the unit ran for eight days without a problem. I could not be happier.
Date published: 2017-09-27
Rated 5 out of 5 by from Installed and runs like anticipated Customer service was top notch Would highly recommend this product And manufacturer
Date published: 2017-09-23
Rated 5 out of 5 by from OUTSTANDING They were great from start to finish. Thank goodness for my generator.
Date published: 2017-09-03
Rated 4 out of 5 by from Nice looking A little expensive, but a necessity would buy again
Date published: 2017-08-30
Rated 5 out of 5 by from The 48kWSQ unit is just the ticket I had a 22kW; however, realized after nasty storm in early May, this unit was deemed insufficient to support necessary elements. Upgraded to a 48kWSQ and now that is the machine! Plenty of power and quiet! I am VERY pleased with this unit.
Date published: 2017-07-07
Rated 5 out of 5 by from This product is relatively quiet during operation. It doesn't use much gas. I am really impressed with my Generac generator. It came through twice for me. The first time was about one hour. The second time it was 12 hours non-stop. The power was off maybe 10 seconds and it came on right away. What can I say. I love my Generac generator.
Date published: 2017-06-01
Rated 5 out of 5 by from Generac We never have had to depend on it yet , but the peace of mind in knowing it is there when we do need it is awesome. Thanks Rick
Date published: 2017-06-01
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48kW-RG048-QS is rated 4.9 out of 5 by 12.
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For all promotions: Qualifying purchase must be made with your Generac Credit Card issued by Synchrony Bank and a $29 account activation fee will apply and be charged at the time first purchase posts to account. For new accounts: Purchase APR is 26.99%; Minimum Monthly Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval.  Not all Generac dealers offer all promotional financing options so please check with your dealer on which financing options they offer.

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Protector Series Accessories

Maximize your investment and maintain your Generac home standby generator with a variety of accessories.