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27kW Protector QS

Model #RG027

Starting At

$10,899.00 Where To Buy

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Generac Protector 27kW 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.

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 27kW QS </strong>Standby Generator

Home Generator Buyer's Guide

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Enjoy writing your review!

Rated 5 out of 5 by from Well-built Workhorse This is my second Generac Quietsource Genset. My first was a 22kw at a previous home installed in 2009. It's provided power flawlessly for the last 10 years, so when I moved into my new home, I didn't hesitate, I purchased my new 27kw Quietsource genset immediately. This generator is everything and more I came to appreciate in Generac. Well built, quiet, and great looking. I'm actually looking forward to losing my power!
Date published: 2019-04-04
Rated 1 out of 5 by from Does not work, low oil lite on Out of box, does not work. Low oil error message, however oil level ok.
Date published: 2019-03-19
Rated 5 out of 5 by from Peace of mind From the moment our Generac was activated we felt immediate peace of mind. We no longer need to worry about losing power and being without air conditioning or losing everything in our refrigerators. Noise from the generator is minimal.
Date published: 2018-11-14
Rated 4 out of 5 by from Great features Very nice generator package, it is very quiet and easy to operate. Maintenance will be an easy task as every thing is very accessible.
Date published: 2018-09-10
Rated 3 out of 5 by from Very close recommend vs no recommend Thermflo/Zonatherm did an A+ job of installing and activating this replacement for my 20K Generac from 2007.Biggest issue is Generac changed the color codes of the wiring 12V Red is now 12V black on the RG027, turns out 12V on Gen is + (plus) not - (minus) transfer switch matched 12V Red to generator. Makes no sense for Generac to change color on a positive lead to black. Also confusing 240v sense having two posts for each L1 and L2 caused tech to plug L1 and L2 from xfer switch to what appears to be pin 1 and pin 2, however, it's really needed to skip a pin, but, no label on the generator. This caused a difficult to find near 5pm fuse set to blow in the transfer switch. Lastly I called Generac about the home 10 yr warranty promo before I ordered the generator, they said only the cheaper air cooled are included, IMHO misleading advertising and no offer from Generac to provide a warranty discount. Makes me think they don't believe in their higher end products. The above said, runs much quieter then the 3600rpm 2 cylinder I had before and installation company does GREAT work to make up for Generac's lack of detail and concern. So... if you buy it make sure you trust your installer. I'm much more tech savvy than most as I run Data Centers with 600K units in parallel. So, I feel confident in my assessment of the Generac shortcomings and the skill of the installer to overcome them.
Date published: 2018-09-08
Rated 5 out of 5 by from Super satisfying unit. Works like a charm, so quiet & dependable. Unit hardly notices when AC kicks on. Low speed, liquid cooling, this unit should last a lifetime.
Date published: 2018-08-30
Rated 5 out of 5 by from Performs as advertised For having a large unit outside house, this unit is great in appearance and blends in nicely to house. Not as loud as I thought it would be either.
Date published: 2018-08-18
Rated 4 out of 5 by from This product performs as advertised Everything was as expected. Initialization was excellent. The only issue I had was the cost of the 5 yr maintenance plan. I hope I am not disappointed with a plan that cost over two thousand dollars. It was kind of quietly inserted in at the last minute. Makes me a little wary of any new Generac products that may be coming to appear.
Date published: 2018-07-26
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27kW-RG027-QS is rated 4.5 out of 5 by 36.
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Protector Series Accessories

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