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48kW Protector QS

Model #RG048

Starting At

$15,099.00 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 warranty.

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 optional 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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Rated 5 out of 5 by from Excellent Quiet Backup This is an excellent, quiet backup generator. I particularly like the V-8 engine and the aluminum enclosure (which should avoid the rust problems that I have experienced with a previous steel-enclosed generator). I would suggest that the shut-off switch mounted outside the lockable controls makes tampering a little too easy. If an emergency shut-off is needed, it should be wired so as to be operable ONLY while the generator is running.
Date published: 2019-07-29
Rated 4 out of 5 by from Response to questions were done on a timely manner, thanks. Your material said access to a Tech was 24/7. Not true Great product, I’ve had a smaller unit for years Was and is still dependable. Look forward to many years of safe and dependable service.
Date published: 2019-07-25
Rated 5 out of 5 by from Love The Automated Features Hasn't been asked to perform yet, but installing contractor has one and swears by its value and reliability. Just in case, I bought the 10 year extended warranty. Live in mountains and lose power regularly from ice storms. Feel much more secure now.
Date published: 2019-07-04
Rated 5 out of 5 by from Great Home House Generator This is my 4th Generac generator. They are perfect for what I wanted. They run the house during outages and have been reliable, efficient machines. Feel secure with these generators.
Date published: 2019-07-01
Rated 4 out of 5 by from Very quiet for such a large generator Very quiet for such a large generator. I do not like the extra kill switches they are too easy to bump and cause the machine to show a code or shut down. Changing the orifice from natural gas to propane is very difficult I had to make a special flat blade device to remove the orifice which meant I had to remove the whole internal regulator, this needs to be changed.
Date published: 2019-05-17
Rated 5 out of 5 by from great generator so far just finished the install. the conversion to LP gas was a challenge as the location of the orifice required removing the whole solenoid assembly and then finding a tool with a wide enough blade to install the LP gas orifice.
Date published: 2019-04-19
Rated 5 out of 5 by from Everything great except no wifi It would be nice if this had a wifi app that would alert when it turns on, otherwise very nice unit. Powers the entire house with the homes seven panels located thru-out the home. 400 amp service.
Date published: 2019-04-09
Rated 5 out of 5 by from We’re ready for power outages now! Installation of the generator was completed this week. We have yet to use it, but no more worries about power outages affecting our lifestyle. We feel very secure with the Generac generator providing backup.
Date published: 2019-04-05
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48kW-RG048-QS is rated 4.8 out of 5 by 35.
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Protector Series Accessories

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