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Generac Protector QS® 22kW Automatic Standby Generator (Premium-Grade)(120/240V Single-Phase)

Generac Protector Electric Generators and Accessories
Model: RG02224ANAX
(Based on expert analysis, manufacturer ratings and customer reviews)

4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5
4 Reviews
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  • Features
  • Specs
  • 1
  • 4
  • Articles
  • Accessories
Run Watts
Rated Watts
Surge Watts
Starting Watts
Premium-Grade Standby Generator
Designed for luxury homes & small commercial buildings
Runs off natural gas or LP fuel supply

Low-speed exercise mode for quieter weekly tests; 61 dB @ 23'

Multi-Lingual Evolution
Two-Line LCD Display provides service & maintenance intervals

Automotive-Style Engine
Operates at half the speed of other engines (1800 vs 3600 RPM)
Powerful Generac in-line 4-cylinder liquid-cooled engine

Sound Attenuated, Acoustically Designed Aluminum Enclosure
Corrosion-resistant material ideal for salty air conditions
Lockable, external viewing window for quick status check

Automatic Shutdown Safety Feature
High coolant temp, low coolant, low oil pressure and overspeed

Mobile Link (Sold Separately)
Easily check generator status via computer, tablet or smartphone

Transfer Switch (Sold Separately)
Customize your system based on your actual application
Engine Brand
Generac 2.4L 4-Cylinder
2400 CC
Consumer Engine Warranty
5 Years
Commercial Engine Warranty
5 Years
Engine RPM
1800 RPM
Low Oil Alert/Shutdown
Product Specs
120/240 Single-Phase
60 Hertz
Surge Watts
22000 Watts
Rated Watts
22000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
22000 Watts
LP Power Capacity
22000 Watts
NG Fuel Consumption @ 50% Load
190 (BTU: 190,000 BTU/HR) ft³/hr
NG Fuel Consumption @ 100% Load
316 (BTU: 316,000 BTU/HR) ft³/hr
LP Fuel Consumption @ 50% Load
2.1 (BTU: 190,575 BTU/HR) gallons/hr
LP Fuel Consumption @ 100% Load
3.4 (BTU: 308,550 BTU/HR) gallons/hr
Rated Amps
92 @ 240 Volts (Single Phase) Amps
Decibel Rating @ 7m
61 Test (70 Run) dbA
Transfer Switch
Automatic (Not Included)
Not Included (525 CCA)
Mounting Pad
Concrete (Not Included)
Cooling System
Liquid Cooled
UL Listed
Grade Type
Made in USA
843 Pounds
Product Length
62.2 Inches
Product Width
30.6 Inches
Product Height
38.6 Inches
Consumer Warranty
5 Years
Commercial Warranty
5 Years
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  1 Question
Q: I have 200 amp service with a heat pump and all other appliances are electric. Will I be able to have my whole house work with this model?
by Vincent Generoso from South Carolina on June 30, 2016

A: Thank you for visiting Electric Generators Direct.

In regards to your question, proper sizing of the generator is crucial to the success of any installation and requires a good working knowledge of electricity and its characteristics, as well as the varying requirements of the electrical equipment comprising the load. When analyzing the electrical load, consult the manufacturerĺs nameplate on each major appliance or piece of equipment to determine its starting amperage.

The following formula can help determine the starting wattage. (Starting Amps x Volts = Watts) When choosing the generator output select a rating that is approximately 20 to 25% higher than the peak load (for example, if the load is about 8 kilowatts, select a 10 kW generator).

A higher rated generator will operate comfortably at approximately 80% of its full capacity and will provide a margin of flexibility if the load increases in the future.

certified electrician should be consulted for proper sizing and installation of any generator.

I have attached the Generac estimated sizing calculator to help you get started.
Generator Sizing Calculator

If you have any further questions please let us know.
by Mike, Product Expert
Generac Protector RG02224ANAX Reviews & Ratings
Overall Rating
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5
High Quality (1)
Exceeded Expectations (1)
Quiet (1)
Easy To Use (1)
Expensive (1)
Heavy (1)
75% of respondents would recommend this product to a friend
4 Reviews  Sort by 
Mike, the Generator Expert
Electric Generator Expert

Product Expert
Total Reviews
103 Reviews
Total Helpful Votes
9623 Helpful Votes
Electric Generators Direct Recommended

Sometimes, air cooled generators just aren't good enough.

The Generac QuietSource Protector 22kW is the ultimate "entry-level" whole house generator.

First, it features a high-quality automotive-style (instead of lawn-mower style) engine. Instead of running at 3600 rotations per minute, it runs at 1800 RPM. By running at half the speed, the engine is a lot quieter, consumes less fuel and lasts much longer.

Secondly, the QuietSource includes WhisperTest technology. When... more
Mike Recommends This Model
Was this review helpful?
Richard L.
Shell Knob, MO
Purchased from Electric Generators Direct
Purchased 5/31/16
Total Helpful Votes
11 Helpful Votes
Most Helpful Positive Review
5 out of 55 out of 55 out of 55 out of 55 out of 5
Extended Warranty And Product Review
Since we just purchased and had installed our new Generac 22kw, a few weeks ago, we found out about your free 10 yr. Extended warranty program. We would like to apply for that, please send us the information.

This is our second Generac Generator. Our first gave us good and dependable service for our home in the Sierra Nevada Moutains in California. We moved to a very remote home on the shore of TableRock Lake in Southwest Missouri. Occasionally,There are power outages and we want to be... more
Richard Recommends This Generac Protector Product
Richard's Experience With Electric Generators Direct
Web Site


"Our Generac Generator was shipped on time and received in perfect condition on a wood pallet and enclosed in a large heavy cardboard crate! We had a professional electric company hook it up as it sits proudly on a large concrete pad we had built just for it! We don't wish for a power outage, but we're not afraid of one either!"
Was this review helpful?
Raymond B.
Manila, AR
Purchased from Electric Generators Direct
Purchased 9/7/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
I Am Very Happy With This Generator
I am very happy with my new generator. I wanted the automotive engine and that is what made me decide on this model. I am very happy with my purchase. It is quiet and it runs everything in my house. My test run on a power failure it started and transferred flawlessly. I haven't had a major power outage yet, but I'm ready when I do. I expect no problems. I would recommend this generator.
Pros: Easy To Use, Quiet, Exceeded Expectations, High Quality
Cons: Heavy, Expensive
Raymond Recommends This Generac Protector Product
Raymond's Experience With Electric Generators Direct
Web Site


"I had a great experience with Generators Direct. They were super nice people and a pleasure doing business with. If you need a generator. Give these people a call. You will be glad you did."
Was this review helpful?
Richard O.
Deming, WA
Purchased from Electric Generators Direct
Purchased 9/28/16
4 out of 54 out of 54 out of 54 out of 54 out of 5
Don't Buy Until You Find Your Installer
The recommended installer has decided not to install my Generator because I did not buy it from him. There doesn't seem to be anyone else in my area who is interested in installing it, so it sits outside completely useless. So, In spite of the fact I think it is a great product I can't really comment on performance because it is not hooked up. Make sure you have someone in your area who will install your generator even if they didn't sell it to you. Seriously! Rich
Mike, the Generator Expert
Product Expert
Very sorry to hear about you having trouble finding an installer in your area. Please keep in mind that a licensed electrician should be able to install a residential generator like this. You may want to contact Generac directly @ 888-436-3722 to see if there's any additional installers in your area.
Richard's Experience With Electric Generators Direct
Web Site


"I would recommend these guys to a friend if I could find someone to install it who knew what they were doing and not over priced."
Mike, the Generator Expert
Product Expert
Please keep in mind that installation costs can and will vary based on where the generator is being installed. Especially in more rural/mountain areas where travel time and other site prep may be required.
Was this review helpful?
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Shop for the Generac Protector QS® 22kW Automatic Standby Generator (Premium-Grade)(120/240V Single-Phase) at Electric Generators Direct. Research Generac Protector 696471616323 standby liquid-cooled generator online. Find Generac Protector RG02224ANAX standby liquid-cooled generator & Protector QS 22 kW Generator features and specifications. Get the best deal; compare Generac Protector RG02224ANAX prices now. Buy the RG02224ANAX direct and save.