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Generac 7042 Guardian 22kW (LP) / 19.5kW (NG) Air-Cooled Standby Generator w/ Wi-Fi


Includes Mobile Link™ Wi-Fi Remote Monitoring - Monitor generator status on a smart phone, tablet or PC

SKU: 7042

Availability: In stock


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No Payment Until 2018



  • Generac's 22,000-Watt Guardian® Series home standby generator is the largest air-cooled home standby generator on the market
  • Not only does it deliver all the features and functionality customers have come to expect from the market-leading brand of home standby generators, but with an MSRP that is the lowest cost per kilowatt of any air-cooled home standby generator
  • Provides whole house coverage for many homes
  • Connected to your existing LP or natural gas fuel supply, it starts within seconds of sensing power loss - automatically - and runs for as long as necessary until utility power returns
  • 5 Year Limited Warranty for automatic standby generators
  • True Power Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances
  • Generac generators and engines are Engineered and Built in the USA - Assembled in the USA using domestic and foreign parts
  • Generac's G-Force Engine is a purpose-built, pressure-lubricated engine capable of handling the rigors of generator use, resulting in power that’s more reliable and requires less routine maintenance than any competitive engine
  • Quiet-Test Self-Test Mode runs at a lower RPM for a five or twelve minute test, making generators significantly quieter than other brands while consuming less fuel
  • Tough, Durable All-Aluminum Enclosures: The RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions
  • Smart, User-Friendly Controls. Generac’s Evolution™ Controller features a multilingual LCD display that allows users to monitor battery status and track maintenance intervals to ensure your generator is always in top operating condition

Compliance and Restrictions.

Warning: Cancer and Birth Defect/Reproductive Harm -- www.P65Warnings.ca.gov/product



Rated Max. Continuous Power Capacity (LP / NG) 22,000 Watts / 19,500 Watts
Rated Voltage 240V
Rated Max. Continuous Load Current - 240 Volts (LP / NG)       91.6 / 81.3
Total Harmonic Distortion Less than 5%
Main Line Circuit Breaker 100 Amp
Phase 1
Number of Rotor Polls 2
Rated AC Frequency 60 Hz
Power Factor 1.0
Battery Requirement (Not Included) 12 Volts, Group 26R 540 CCA Min. or Group 35AGM 650 CCA Min.
Unit Weight (lbs. / kg) 466 lbs. / 211 kg
Dimensions - L x W x H (in / mm) 48" x 25" x 29" / 1218mm x 638mm x 732mm 
Sound Output in dB(A) at 23 ft. Under Normal Load 67 dB(A)
Type of Engine Generac G-Force 1000 Series
Number of Cylinders 2
Displacement 999cc
Cylinder Block Aluminum with Cast Iron Sleeve
Valve Arrangement Overhead Valve
Ignition System Solid-State with Magneto
Governor System Electronic
Compression Ratio 9.5:1
Starter 12 VDC
Oil Capacity Including Filter (Quarts / Liters) 1.9 Quarts / 1.8 Liters
Operating Speed 3600 RPM
Fuel Consumption - Natural Gas 1/2 Load: 228 ft³/hr - Full Load: 327 ft³/hour
Fuel Consumpstion - Liquid Propane 1/2 Load: 2.53 gal/hr - Full Load: 3.90 gal/hr
Wi-Fi Remote Monitoring Yes

More Info


This product looks nice and features are what I wanted.Review by PJH
This product looks nice and the size is smaller then I thought it would be. The generator was installed on 9-18-14 so little early for quality assessment. It has tested it self twice and does it at exactly same time for five minutes. The noise factor is fairly quite about the same as someone mowing their lawn which is acceptable. Just the thought of being prepared is comforting. (Posted on 8/2/2015)
Peace of Mind / Security ProvidedReview by Buff
Power in our area goes out several times a year. We've had to check into a hotel foe days at a time, plus the added cost of lost food in the refrigerator & freezer. in addition our major concern is that our Alarm system's back up battery is only good for 24 hours - thus when the power is out over 24 hours our alarm system doesn't work. For all these reasons we decided to have a Generac standby generator installed. Two days after it was installed our power went out - but only for a few seconds for us because we had the Generac - Our neighbors were without power for hours. It works very well, looks good and provides that peace of mind we were looking for - Thanks Generac. (Posted on 7/18/2015)
Covers my entire homeReview by Navychief
This generator was a no-brainer purchase compared to the 20KW model. Just an additional $100+ to ensure adequate amperage/growth margins. If you get the right sized Automatic Transfer Switch, and you're not trying to power New York City, this generator should be very adequate. I have a two story home with two AC units, two refrigerators, saltwater tank, computers, deep freezer, etc. This unit didn't skip a beat to cover those loads (and fairly quiet compared to my neighbors older model) when I had my first 20 minute loss of Service. In my situation (and probably yours), I didn't need load shedding modules. My only complaint is the ground facia (esthetic) is flimsy and easily broken. (Posted on 7/15/2015)
Very pleased with my purchase!Review by Bob
Just installed my 22Kw Guardian model 6552 propane fueled unit. Installation and start up went without a hitch. Whole house system works beautifully.
Great to see first quality USA engineering and manufacture. I look forward to many years of back up service and peace of mind at our cottage.
Bob Neill (Posted on 7/13/2015)
quiet with power to spareReview by Ack
We recently purchased the unit for a farm. Even with out 3 HVAC units running max cool and all the lights in the house on, we were at less than 50% available power output. It is quiet and compact. The computer electronics read out is easy to manage and understand. I hope we won't need to use it much but, living in the country side with well water and dependent on our septic tank pump, we needed that piece of mind. (Posted on 5/28/2015)
Love the internet dashboard. I can monitor my unit from anywhere.Review by Ed
Installation very professional and well done. The features that are monitored by the internet AP are great. Fortunately we haven't had to use it yet but we are confident the unit will perform as advertised. Thought it would be louder. (Posted on 4/20/2015)
Seems solid so farReview by JonE
Installation was completed a couple weeks ago and everything seems good so far. Was able to power everything critical in the house during load testing, though both AC units starting at once pushed it over the limit and the transfer switch had to kick in a delay. That said, the switch handled everything as designed, so I am confident that we will be in good shape when the power goes out. Was definitely on the loud side, but the dealer told me it's actually quiet compared to older units. I just don't have a point of comparison. Overall, very happy with the purchase. (Posted on 1/24/2015)
Attractive, relatively quiet, convenientReview by Skipper47
It means everything to me, living alone and a senior, to have the peace of mind from this unit. I spent a lot of time last winter alone in the dark and cold and uncertain of the future during several lengthy power outages. I decided I never wanted to go through that again. On another person's recommendation, I called Generac and told them I knew nothing and needed a lot of information. They couldn't have been more helpful. Everything was handled with utmost professionalism. In short, it is worth every penny to never have to live without power and water again. (Posted on 12/9/2014)
ExcellentReview by Jeff
Had 22kw generator installed about a week after install lost power due to animal in transformer generator kicked in about 15 seconds later. temp was in the mid 90's was able to stay cool and was able to cook breakfast don't know why I waited so long to buy one Love it (Posted on 11/15/2014)
Extremely quiet - functions perfectlyReview by CPS
After losing power for the 4th time this summer, I bit the bullet and installed this generator. I am embarrassed to say it took me this long - it is a real life saver. With a 1 yr old toddler running around the house, I feel so much better knowing that we'll have continuous power during the heat of the summer and cold of the winter. It runs very quietly, you can't even tell it's on - except when you get the alert on your iPhone when you get the attachment that connects to the cloud for notifications. Really cool that it alerts me every week when it starts it's test and when it finishes. Very happy with the product. (Posted on 10/8/2014)
Unit looks nice, Sound not bad.Review by Larry
Little early for a review since installation is not yet totally complete and will not be until 8/15/14 or perhaps even later. The main unit is in but not complete. Trust it will be fine.

Interpreted the promotion as 5 additional years of warranty but not so. Dealer said 5 years only free and nio other years at this time. (Posted on 9/22/2014)

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