Breadcrumbs

Home > All Products > Generators > Home Backup Generators > Guardian Series > 20kW-7039 whole house switch

Guardian 20kW Home Backup Generator

Model #7039
Add to My Products

Downloads:

Starting At

$4,699.00 MSRP Includes Transfer Switch - Installation, Taxes and Shipping Not Included Where To Buy Get a FREE
In-Home Assessment
What is an In-Home Assessment?

WebCollage

2017 GUARDIAN 20KW GENERATOR FEATURES AND BENEFITS

One of the most powerful air-cooled generators on the market today, the Guardian Series 20 kW automatic home standby generator can provide whole-house backup power for many homes.

2017 GUARDIAN 20KW GENERATOR <strong>FEATURES AND BENEFITS</strong>

Up to whole house protection with the 200-amp, NEMA 3R (aluminum outdoor enclosure) smart switch.

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. Learn more about the G‑Force 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.

24/7/365 Customer Support Team standing by all day, every day from our headquarters in Wisconsin to answer any questions you might have.

Our RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions.

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.

Mobile Link™ Remote Monitoring allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and the generator’s maintenance schedule. Connect your account to your authorized service dealer for fast, friendly and convenient assistance. (sold separately)

Home Generator Resources

The purchase of a home backup generator will give you peace of mind for years to come, but it’s a big investment. That is why we want to give you as much information as possible so you can make the right decision based on your needs and budget. The options below will help you understand how the entire process works, what your financing options are, and how to choose the right backup power solution.

Schedule a Free In-Home Assessment

Call to Schedule

Call Us at 1-844-242-3494
to Speak With a Customer Service Representative
Chat Now
Chat With a Customer Service Representative

Schedule a Free In-Home Assessment

*Required Fields

Generac values your feedback!

When writing your review, please consider the following guidelines:

  • Prior to providing a review, refer to a product’s documentation to ensure that unit is being used and maintained properly
  • Alluding to issues incurred in the wake of negligent maintenance or improper use will void review submissions
  • Focus on your experience with the product and its features
  • Provide details about why you liked or disliked a product
  • Reviews submitted for products other than those listed will be rejected immediately
  • Any product reviews referencing independent authorized dealers, service providers, or retailers by name will NOT be posted. (Dealer reviews can be provided here)
  • All submitted reviews are subject to the terms set forth in our Terms of Use

We reserve the right not to post your review if it contains any of the following types of content or violates other guidelines:

  • Obscenities, discriminatory language, or other language not suitable for a public forum
  • Advertisements, “spam” content, or references to other products, offers, or websites
  • Email addresses, URLs, phone numbers, product serial numbers, physical addresses or other forms of contact information
  • Critical or spiteful comments on other reviews posted on the page or their authors

If you wish to share feedback with us about product selection, pricing, ordering, delivery, or other customer service issues, please do not submit this feedback through a product review. Instead, contact us directly.

Enjoy writing your review!

Rated 5 out of 5 by from Better than 5 stars!!!!! We had our Generac 20kW and whole house switch installed in March 2014. Ever since the install we have been hoping for the power to go out (strange yes but wanting to test the investment). Finally the power went out during a thunderstorm Sept. 1st. The generator started confidently just like it does on it's weekly exercise runs. We were so pleased that we did not need to drag out the old portable generator. During the 6 hours of outage we ran, 3 TVs, 3 computers, the dishwasher, the AC, 2 fridges, 1 freezer, the sump pump, the well pump, the garage door and almost every light in the house at varying times. The Generac never missed a beat and was so quiet when it was time for bed nobody complained like they did with our old portable. Fantastic product. Exactly why my parents and in-laws installed their's a few years ago.
Date published: 2014-09-02
Rated 5 out of 5 by from Just finished 12 days of flawless power after Sandy After last year's hurricane here on Long Island knocked out power for several days leaving our sump pumps useless, we purchased the 20k unit...couldn't have imagined it would be running for 12 days straight less then a year later! Our power does get knocked out pretty regularly, and just last month the unit was running for 5 hours. I recently had the radio remote installed, right by my home alarm keypad. I'd highly recommend it, as it gives you the added peace of mind knowing the unit is ready to go without going outside and opening up the unit. Excellent unit, would highly recommend it.
Date published: 2012-11-11
Rated 5 out of 5 by from An outstanding product I am very satisfied with my new Generac, whole house backup. I was amazed at how quiet the unit runs when I have been out of power. I recommend Generac to all of my friends
Date published: 2018-08-31
Rated 5 out of 5 by from This is my second Generac Had a 13 kw in CT it ran for 4 days straight in an ice storm outage with out a glitch. Just moved to FL and bought a 20 kw in case of hurricane and frequent lightning outages. 2 days after installation we had a 45 minute outage ran beautiful.
Date published: 2018-08-31
Rated 5 out of 5 by from Great product and install very efficient. Took 3 1/2 hours to install, wire and test. Good job by all and we’re ready for whatever the weather or outages bring.
Date published: 2018-08-08
Rated 5 out of 5 by from Great product It is a bit of a pain to register the unit, The serial plate shown did not exist but the serial number was on the interface screen. It tells you to get the switch serial number also. So I had to open up the unit to get it, only to find that when I inputted the serial number it came up automatically. I assume the will happen when you purchase the generator that comes with the switch. Works great!
Date published: 2018-08-07
Rated 5 out of 5 by from Installed well and looks great very happy with extended warranty Very happy, will recommend to others, looks great. Havent had an outage yet but waiting for one.
Date published: 2018-08-03
Rated 5 out of 5 by from Great technology / Great peace of mind! We recently purchased and installed a Generac 18-20KW Stand-by generator. It uses natural gas. We had upgraded our electric service to 200 amp and installed the automatic transfer switch as part of the upgrade. The day came for installation of the generator and all went smooth. The unit was tested and worked as anticipated. Not more than a few days later our power went out and just like clock-work the unit kicked on within seconds and ran flawlessly restoring power very quickly to the whole house. We are very pleased with this unit and we now have peace of mind knowing that when power is disrupted by windstorms, ice storms or other reasons, our critical systems will continue to work keeping our food refrigerated/frozen, our furnace running and the lights on. More than enough power to run the whole house. We could not be more pleased with our system.
Date published: 2018-07-28
  • y_2018, m_9, d_18, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_563
  • loc_, sid_20kw-2017, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_generac
  • bvseo_sdk, net_sdk, 3.1.2.0
  • CLOUD, getReviews, 0ms
  • REVIEWS, PRODUCT
20kW-7039 whole house switch is rated 4.8 out of 5 by 563.
  • y_2018, m_9, d_18, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_563
  • loc_, sid_20kw-2017, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_generac
  • bvseo_sdk, net_sdk, 3.1.2.0
  • CLOUD, getAggregateRating, 15ms
  • REVIEWS, PRODUCT