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Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding)

Generac Guardian Electric Generators and Accessories
Model: 7043
(Based on expert analysis, manufacturer ratings and customer reviews)

4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5
30 Reviews
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Airooled Standby Generators
22 kW
Rated Watts
120/240 Single-Phase
22kW (LPG) / 19.5kW (NG) Guardian Air-Cooled Standby Generator
Protects your home and family during a power outage
Digital Power Management (DPM) protects against overload

Includes 200-Amp Service Entrance Rated Automatic Smart Switch
Installs between main meter & service panel for faster & less costly installation
DPM technology allows for the Smart Control of (4) A/C units only
Great for homes with multiple Air conditioners (24 VAC controlled)

Add Up To (8) Smart Management Modules (SMM) (Sold Separately)
Frequency (Hz) monitoring design, no control wire required
Versatile design, easily prioritize loads & lock-out non-essential loads

5-Year Limited Warranty
Plus 24/7•365 Customer Support so you have your questions answered when its convenient for you

Generac's G-Force Engine
Specifically desgined for the demanding enviroment standby generators endure
Full pressure lubrication system w/ 2 year oil change interval

Operates On Clean Burning, Efficient Natural Gas or LP (Vapor)
Connectes to your existing LP or natural gas fuel supply

True Power™ Electrical Technology & Automatic Digital Voltage Regulation (+/- 1%)
Less than 5% Total Harmonic Distorsion (THD) for utility grade power
Allows for faster response time & maximum motor starting ability

Evolution™ Digital Controller
Multilingual, 2-Line LCD display for simple, straighforward operation
Programmable-exerciser lets you set how often & what time generator will self-test

Tough, Durable All-Aluminum Sound Attenuated Enclosure
RhinoCoat™ powder-coated finish keeps enclosure protected from the elements

Compatible With Mobile Link™ Remote Monitoring (Sold Separately)
Easily montior generator status anywhere with a smartphone, tablet, or PC

Installation Flexibility*
Can be installed within 18" of a building; *Always check local bulding codes

Generac Standby Generators & Engines - Built In The USA*
Built in the USA using domestic & foreign parts

Additonal Features:
Base fascia kit, 12" Flexible fuel line and Direct-To-Dirt composite mounting pad
Built-in Battery Charger (Battery Sold Separately)
Engine Brand
Generac OHVI
Starting System
12v Auto Start
999 CC
Consumer Engine Warranty
5 Years
Commercial Engine Warranty
5 Years
Engine RPM
3600 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
19500 Watts
LP Power Capacity
22000 Watts
NG Fuel Consumption @ 50% Load
216 (BTU: 216,000 BTU/HR) ft³/hr
NG Fuel Consumption @ 100% Load
310 (BTU: 310,000 BTU/HR) ft³/hr
LP Fuel Consumption @ 50% Load
2.56 (BTU: 232,320 BTU/HR) gallons/hr
LP Fuel Consumption @ 100% Load
3.87 (BTU: 351,203 BTU/HR) gallons/hr
Rated Amps
91.6 @ 240 Volts (Single Phase) Amps
Decibel Rating @ 7m
67 dbA
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
Not Included (540 CCA)
A/C Ton Rating
2 x 5-Tons
Mounting Pad
Composite (Included)
Transfer Switch Style
Service Disconnect
ATS Load Shedding
ATS Service Disconnect
Cooling System
Air Cooled
UL Listed
Made in USA
466 Pounds
Product Length
48 Inches
Product Width
25 Inches
Product Height
29 Inches
Consumer Warranty
5 Years
Commercial Warranty
5 Years
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*Ask Mike about the Generac Guardian 7043. Sorry, no repair questions:




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  11 Questions
Q: What size do i need for 1800 so.ft
by Anthony H. from Texas on July 01, 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 manufacturer’s 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. A certified electrician should be consulted for proper sizing and installation of any generator.

I have attached an estimated Generator sizing calculator is help you estimate the size to get started.

Generator Sizing Calculator

Please let us know if you have further questions we an assist with.

by Mike, Product Expert
Q: I just bought 22k Generac it will be 70' from the propane tank what size flex piping should i buy?
by Dennis K. from Wisconsin on June 30, 2016

A: Below is a link to the Install Manual that will cover the pipe sizing using LP. I recommend checking with a plumber or LP company for installation of the gas line.

Generac Air Cooled Installation Guide
by Mike, Product Expert
Q: Can the air cooled unit operate in warm weather conditions and not overheat. We just had a 122 degree day and if the electricity had failed, would this generator be able to handle the load in the heat?
by Gene H. from California on June 27, 2016

A: Thank you for contacting us.

Generac Air-Cooled Standby Generators are tested in accordance to UL 2200 standards with an operating temperature of -20 ºF (-29 ºC) to 122 ºF for normal operating range

Please let us know if you have any other questions.
by Mike, Product Expert
Q: Should I pour a concrete base to place this unit on or can you place on a level dirt pad?
by Jim from Iowa on September 03, 2015

A: Thank you for contacting Electric Generators Direct.

I would advise pouring a concrete base. Or I would advise looking into a GenPad.

GenPad Product Info

by Mike, Product Expert
Q: Can aluminum wire be used to feed the breaker on a Generac generator?
by Glenn from New Jersey on December 11, 2014

A: Thanks for your inquiry.

When wiring the generator it must be in accordance with local jurisdiction and codes. If ALUMINUM conductors are used, apply corrosion inhibitor to conductors.

by Mike, Product Expert
Q: What is the clearance needed on all four sides of the unit for proper operation?

by Mark C. from Connecticut on July 24, 2014

A: Page 11 of the Installation Guide shows proper installation distances according to NFPA and manufacturers recommendations. The guide is available on our site under the specs tab in the download documentation section......

Installation Guide

by Mike, Product Expert
Q: What does AC shedding mean?

by Dan U. from Michigan on December 29, 2013

A: The following How-To-Library article will help explain AC Shedding.....

by Mike, Product Expert
Q: If I'm not around when my home standby generator is running, what type of protections systems do the Generac units have?
by Josh from New Jersey on November 13, 2013

A: The generator may have to run for long periods of time with no operator present to
monitor the engine/generator conditions. Therefore, the generator is equipped with a number of systems to automatically shut down the unit to protect it against potentially damaging conditions. Some of these systems are as follows:

• Low Oil Pressure Sensor
• High Temperature Sensor
• Overcrank Sensor
• Overspeed Sensor
• RPM Sensor
• Under-frequency Sensor
• Undervoltage Sensor
• Overvoltage Sensor
• Internal Failure Sensor
• Low Battery Voltage Alarm

The control panel contains a display which alerts the operator when a fault condition occurs. The above list is not all inclusive. For more information about alarms and control panel operation, see Section 3 (Operation) in the owner's manual.

by Mike, Product Expert
Q: What type of oil should I use in my Generac home standby generator?
by Jim from Illinois on November 11, 2013

A: The maintenance section in the Generac's home standby owner's manual lists that the oil type is based on temperature ranges specific in your area.....

SAE-30 above 32º F (0º C)
10W-30 between 40º and -10º F (4º and -23º C)
Synthetic 5W-30 for all temperature ranges

All new models come with SAE-30 oil in them and have been test run at the factory for 25 hours and no break-in is required. The first oil change would be at 2 years or 200 hours, whichever comes first.

by Mike, Product Expert
Q: I'm not sure if this falls into the repair area but, I'm concerned about the sound this generator produces. Is there a way to lower that? Is there sound proofing approved for use for the interior walls of this type of home standby? My neighbors bedroom window will be 20ft from where I plan to install the generator. I would prefer doing something inside the generator as apposed to some type of fencing or other external methods.

by Mark H. from New Jersey on October 23, 2013

A: The manufacturers make every effort to reduce the sound of their generators as best they can keeping within NFPA and UL requirements. There are currently no options or parts available to install inside home standby systems to reduce their db(A) levels.

Your only option is location or sound barriers installed around the unit while keeping within NFPA and manufacturers distance requirements for proper fire protection, air intake and exhaust output.

We recommend consulting with your local inspector or AHJ (Authority Having Jurisdiction) as to the specific local code requirements.

by Mike, Product Expert
Q: Is the Smart Switch the actual Automatic Transfer Switch? Or are they different? The specs says that there is an automatic transfer switch included.

by Joseph P. from New York on October 21, 2013

A: The "smart switch" is the automatic transfer switch. The ATS has an internal load manager that will load shed up to 2 AC units preventing the overload of the generator at start-up.

by Mike, Product Expert
Generac Guardian 7043 Reviews & Ratings
Overall Rating
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5
High Quality (19)
I'd Buy It Again (14)
Price (13)
Quiet (10)
Reliable (10)
Heavy (4)
no cons noted (1)
Low Quality (1)
A little sloppy on your ... (1)
None (1)
100% of respondents would recommend this product to a friend
30 Reviews  Sort by 
Mike, the Generator Expert
Electric Generator Expert

Product Expert
Total Reviews
103 Reviews
Total Helpful Votes
9188 Helpful Votes
Electric Generators Direct Recommended

Generac is the only manufacturer that offers a 22kW air cooled home standby generator . This unit is unlike any home standby currently available and is far below the price of a comparable liquid cooled model.

At 22kW, model 7043 is the largest air-cooled generator on the market. This model is equipped with a 5 year warranty, and has all of the features and functionality that customers have come to expect from the number one standby generator manufacturer. Generac, through strategy and... more
Mike Recommends This Model
Was this review helpful?
Robert C.
Titusville, FL
Total Helpful Votes
38 Helpful Votes
Most Helpful Positive Review
5 out of 55 out of 55 out of 55 out of 55 out of 5
Hurricane Matthew Is Foiled!
We installed the 22kw Generac whole house generator in August 2015. It runs itself for 5 minutes every 2 weeks, and even tells us when is time to check the battery! At 3:58am on 10/7/16 Matthew shut down our power. Within 30 seconds our entire 2400 sq ft. house, hvac and all was back under power. The Generac is so quiet we hardly noticed it was on for 18 straight hours. It is so far trouble free. We even ran an extension cord to one of our neighbors here is Titusville, Florida. My whole family... more
Robert Recommends This Generac Guardian Product
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Michael F.
Atlanta, GA
Purchased from Electric Generators Direct
Purchased 1/2/17
5 out of 55 out of 55 out of 55 out of 55 out of 5
Impressive But Loud
I used mine for the first time last night. A 14 hour test drive. It did a great job. It got a bit bumpy when it had to start the hvac system. It was louder than I expected but, let's be fair, it ran my house, kept us comfortable and secure. I am very happy with my purchase tho my neighbors likely aren't.
Pros: I'd Buy It Again, Reliable, Easy To Use
Cons: Loud!!
Michael Recommends This Generac Guardian Product
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Hoyt R.
Cleveland, TN
Purchased from Electric Generators Direct
Purchased 12/19/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
This Is A Good Whole House Generator
Fast delivery. Everything went smooth from installation to start up, carry house load very well.
Pros: Quiet, Features, Easy To Use
Hoyt Recommends This Generac Guardian Product
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William H.
Eleva, WI
Purchased from Electric Generators Direct
Purchased 10/21/16
4 out of 54 out of 54 out of 54 out of 54 out of 5
Do Your Homework
If your going to purchase the generator yourself and have an electrical contractor install it, get a reliable cost estimate on the installation cost. This should include a walk-through with the contractor to verify the location is good for connection to your power supply and fuel for the generator before you make the purchase. There are code restrictions as to placement.

Also, review the accessories that might get added to the generator and determine the cost to install. Some simply are... more
Pros: Features, Quiet, Easy To Use
Cons: Installation cost
William Recommends This Generac Guardian Product
Was this review helpful?
Steve G.
Choctaw, OK
5 out of 55 out of 55 out of 55 out of 55 out of 5
I Am Really Satisfied With My Purchase
I received the generator in a timely manner, without damage, and had no issues getting it installed and up and running. I am ready for the next ice storm, which we have pretty frequently in Oklahoma. Last time this happened we were without electricity for 7-days.
Pros: Features, Price, High Quality, I'd Buy It Again
Steve Recommends This Generac Guardian Product
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Mark M.
Fergus Falls, MN
Total Reviews
4 Reviews
Total Helpful Votes
10 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Glad To Have A Reliable Backup
We built a house in 2014 and purchased this model generator from you in September of 2014. It was installed in November of 2014. We programmed it to run every two weeks on my day off...they call it "exercising" the generator. We got the cold weather kit (battery heater) since we live in Minnesota and -20F is not uncommon here in winter. We have had several power outages since, living in the country as we do, and the generator has worked flawlessly.

It is loud enough for us to... more
Pros: Features, Quiet, High Quality, I'd Buy It Again
Cons: Computer Module Puked Needing Replacement
Mark Recommends This Generac Guardian Product
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Joanne T.
Seligman, AZ
Purchased from Electric Generators Direct
Purchased 10/31/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Product
We love our new generator. There is only one issue. When we first got it, we couldn't tell if there was oil in it, so we added some. The oil is so clean that it didn't look like there was any oil on the dip stick. It looks like we over filled it. There is oil coming out and sitting at the bottom inside of the generator. We hope that this is the reason due to over filling it and that the new generator does not have a problem. We cannot see where the oil is coming from.
Pros: Features, Easy To Use, Reliable, Durable
Cons: Heavy, Expensive
Joanne Recommends This Generac Guardian Product
Mike, the Generator Expert
Product Expert
Generac ships their standby generators filled with oil.
Was this review helpful?
Lyman P.
Media, PA
Purchased from Electric Generators Direct
Purchased 10/31/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
Impressive New Producy
I had a theee year old "load sharing" General that required three relay boxes. New 22KW was installed at our newly purchased Co-op home and is much simpler and handles entire house. Well documented and easy installation about 5 hours to have it up and running. Buy it with confidence!
Pros: I'd Buy It Again, High Quality, Easy To Use, Price
Cons: Heavy
Lyman Recommends This Generac Guardian Product
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Glenn S.
Germanton, NC
Purchased from Electric Generators Direct
Purchased 11/2/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
A Very Good Generator
It was shipped and came the way you said it would. Unloaded and setup in a couple days. Was easy for me. I have electrical experience. Went by the directions and start up was great. No problems. Great product.
Pros: High Quality, I'd Buy It Again, Price, Exceeded Expectations
Glenn Recommends This Generac Guardian Product
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Milton K.
Levant, ME
Purchased from Electric Generators Direct
Purchased 11/30/16
5 out of 55 out of 55 out of 55 out of 55 out of 5
The Generac 22k Generator Is Awesome!!
We purchased the 22K Generac generator to run our house and our business garage. We have lost power 4 times in the very short time that we have had the generator and it has been awesome!! The generator runs everything!! Normally we would have to shut down the business until power came back on, but not any more!! Thank you!!
Pros: High Quality, I'd Buy It Again, Quiet, Reliable
Milton Recommends This Generac Guardian Product
Milton's Experience With Electric Generators Direct
Web Site


"Buying from Electric Generators Direct was convenient, easy and fast! We have and will continue to recommend the Generac generator and online ordering to our friends and family. Thank you!!"
Was this review helpful?
Deron J.
Troy, OH
5 out of 55 out of 55 out of 55 out of 55 out of 5
Stop Looking And Buy
This is the first online review I have ever given a product or service. PED is professional and very experienced with their products. After a lot of research and discussions I must admit this 22kW Gen system meets or exceeds expectations.
Pros: High Quality, I'd Buy It Again, Exceeded Expectations, Reliable
Deron Recommends This Generac Guardian Product
Was this review helpful?
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  • Ships via Semi-Truck
  • Requires a loading dock or forklift
  • Free to Lower 48 States
We currently CANNOT ship this product to Alaska, Hawaii or any destination outside of the United States
Priority Shipment
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  • Ships Same Business Day
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  • $50 Service Charge
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  • Requires Special Hydraulic Lift
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Shop for the Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding) at Electric Generators Direct. Research Generac Guardian 696471070439 standby air-cooled generators online. Find Generac Guardian 7043 standby air-cooled generators & Guardian New 22 kW 200A ATS features and specifications. Get the best deal; compare Generac Guardian 7043 prices now. Buy the 7043 direct and save.