8 Best Generac Whole House Generator Reviews

Last updated on February 5th, 2023

In our 8 Best Generac Whole House Generator Reviews, you’ll find useful information to help you make an informed choice.

In these Generac whole house generator reviews, we will examine the key features, pros, and cons of each product. Also, you can find the best price on Generac generators at Amazon. Keep reading for a list of 8 of the best portable whole house generators from Generac.

Quick Comparison – Best Generac Whole House Generator This Year

Is Generac a reputable brand?

Generac has been in the commercial and residential markets since it was founded more than 60 years ago. Another reason for Generac’s popularity is that its residential-grade generator line incorporates technologies from its high-end industrial-grade powerhouses. When it comes to usability, Generac generators are equipped with nearly all the great features you’d expect. Compared to other models, Generac models are more efficient, both in terms of fuel consumption and noise, which makes them more suitable for home use. 

Below Is Our In-Depth 8 Best Generac Whole House Generator Reviews

#8 Generac’s G0071720 10kW Home Standby Generator

True Power Technology in this Generac 10kW standby generator provides clean, smooth operation of sensitive electronics and appliances with less than 5 percent harmonic distortion. It has a FREE Mobile Link, enabling you to check on the status of your generator from anywhere around the globe using your smartphone, tablet, or computer. Moreover, with its G-force engine, it produces power that is more reliable and requires less maintenance than those from competitors. 

Specifications:

  • Dimensions: 48 x 25 x 29 inches
  • Weight: 338 pounds
  • Wattage: 10000
  • Fuel Type: Liquid Propane or Natural Gas (Dual Fuel)
  • 5 year limited warranty

Pros:

  • Easy to install
  • Durable
  • Powers 16 circuits in your house
  • Reliable G-force engine
  • A transfer switch is included
  • Easy to monitor with Mobile Link

Cons:

  • Not capable of powering more than 16 circuits
  • It does not include a battery.

#7 Generac’s 70422 19.5/22kW Standby Generator Air-Cooled with Wi-Fi


With the Generac 70422, you can monitor your 22/19.5kW standby generator directly from your smartphone. A number of excellent features are included in this Generac 22000 watt generator, including True Power technology for smooth operation and pressure lubrication to ensure engine durability. 

Specifications:

  • Dimensions: 48 x 25 x 29 inches
  • Weight: 525 Pounds
  • Wattage: 22000 (Liquid Propane) or 19500 (Natural Gas)
  • Voltage: 120/240 VAC
  • Fuel Type: Propane or Natural Gas

Pros:

  • Works great for the whole house
  • Easy to install and use
  • Durable
  • Monitoring is possible from the phone
  • G-force engine is quite reliable
  • Multilingual LCD screen
  • Withstands harsh outdoor conditions

Cons:

  • Regular maintenance is required
  • It does not include a transfer switch

Check out our Guide – How Do You Hook A Generator Up To Your House? Step By Step Guide

#6 Generac’s Guardian 24kW Generator with Transfer Switch

With Generac’s 24kW unit, you can get the most power while taking up to 70% less space than other competing models. Furthermore, this 24kw Generac generator with transfer switch comes equipped with a home energy management system, which makes it possible for generator owners to monitor and manage their home energy consumption, thereby reducing electric utility bills by as much as 20%.

Specifications:

  • Dimensions: 48 x 25 x 29 inches
  • Weight: 514 pounds
  • Wattage: 24000
  • Fuel Type: Liquid Propane or Natural Gas
  • 5-Year Limited Warranty

Pros:

  • Easy to set up
  • Energy-efficient
  • Durable
  • Compact
  • Includes a Transfer switch
  • Weather-resistant
  • Provides enough power to run appliances in the house

Cons:

  • Too noisy

#5 Generac’s 6864, Diesel Powered 5kW Portable Generator

The diesel portable generator features True Power Technology, which ensures a clean, smooth operation of tools, electronics, and appliances. It is perfect for worksites. Furthermore, the generator is equipped with an hour meter for monitoring maintenance intervals, as well as a single-touch electric start for a convenient start-up. 

Specifications:

  • Dimensions: 33.1 x 22.5 x 25.6 inches
  • Weight: 254 pounds
  • Starting Watts: 5500
  • Running Watts: 5000
  • Voltage: 120/240 VAC
  • Fuel Type: Diesel
  • Tank Volume: 12 Gallons
  • Run Time: 32.4 hours at 50% load
  • Starting Method: Electric

Pros:

  • Easy to install
  • Requires less maintenance
  • Durable
  • Efficient & long runtime
  • Easy start-up with single touch electric start
  • Provides maintenance alerts on the hour meter

Cons:

  • Noisy
  • It does not include a battery.

#4 Generac’s 6954 Electric Start 8kW Generator 

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A portable generator powered by gasoline such as the Generic GP8000E is ideal for home use, camping, worksite, or outdoor events. It has a low-tone muffler, which assures quiet operation, and a fuel gauge that indicates when to refuel the generator. Additionally, this generator has a 420cc engine that runs on gasoline and has an electric start with recoil backup. This model has an hour meter to record maintenance intervals.

Specifications:

  • Dimensions: 28 x 27 x 25 inches
  • Weight: 197 pounds
  • Starting Watts: 10000
  • Running Watts: 8000
  • Voltage: 120/240 VAC
  • Fuel Type: Gasoline
  • Run Time: 12 hours 
  • Starting Method: Electric
  • 2 years limited warranty

Pros:

  • Suitable for small houses
  • Durable
  • Compact
  • Portable
  • Easy start-up with single touch electric start
  • Provides maintenance alerts on the hour meter

Cons:

  • Assembling the product is difficult since the instructions in the manual are unclear and difficult to follow. To assemble wheels, handle, and feet, and to connect wires to the battery, you may need to call an electrician.

Read our – Generac Vs Kohler Whole House Generator – We Compare The 2!

#3 Generac 7043 19.5/22kW Whole House Generator

Generac’s 7043 is a powerful, reliable generator that comes with a five-year limited warranty. It has an impressive power output of 22,000 watts using liquid propane and 19500 watts using your home’s natural gas supply. Such a power output is sufficient for large homes with a lot of electrical appliances. Additionally, it has a unique multilingual LCD that you can use to check the battery and find out when it is time for the next maintenance. 

Specifications:

  • Dimensions: 48 x 25 x 29 inches
  • Weight: 515 pounds
  • Wattage: 22000 (Liquid Propane) or 19500 (Natural Gas)
  • Voltage: 120/240 VAC
  • Fuel Type: Propane or Natural Gas (Dual Fuel)
  • 5-Year Limited Warranty

Pros:

  • Suitable for the largest homes
  • Easy to install
  • Weather-resist 
  • Multilingual & user-friendly LCD control panel
  • Durable
  • Includes a Transfer switch

Cons:

  • It does not include a battery
  • Poor customer service
  • Very loud

#2 Generac’s 5734 15kW Gasoline Powered Whole House Generator

The Generac 5734 GP15000E is a powerful generator that delivers 15,000 watts of power. There will likely be no voltage drops and the unit can easily power an entire house or a job site. Furthermore, this Gasoline Generac portable generator has an electric start that makes it very easy to get started, unlike older machines that required you to pull the cord until you exhausted your arm.

Specifications:

  • Dimensions: 48.5 x 30.75 x 38.5 inches
  • Weight: 373 pounds
  • Starting Watts: 22500
  • Running Watts: 15000
  • Voltage: 120/240 VAC
  • Fuel Type: Gasoline
  • Tank Volume: 16 Gallons
  • Run Time: 10 hours
  • Starting Method: Electric

Pros:

  • Provides enough power for a whole house
  • Portable
  • Easy to start
  • No voltage drops
  • Electric start

Cons:

  • Poor customer service
  • Loud

#1 Generac’s 7676 GP8000E 8kW Whole House Portable Generator

Generator’s GP8000E offers a number of advantages that make it a favorite for emergency power generation and recreational use. Keeping your battery charged and ready for unexpected outages is a breeze with its plug-in battery jack. Moreover, this model has an OHV engine, a large steel fuel tank with a fuel gauge, and long runtime of up to 11 hours at 50% load. 

Specifications:

  • Dimensions: 27.2 x 27 x 26.5 inches
  • Weight: 214 Pounds
  • Starting Watts: 10000
  • Running Watts: 8000
  • Voltage: 240 VAC
  • Fuel Type: Gas Powered
  • Tank Volume: 7.9 gallons
  • Run Time: 11 hours at 50% load
  • Starting Method: Electric

Pros:

  • Works great for smaller houses
  • Easy to install
  • Portable
  • Durable
  • Electric start
  • Easy assembly instructions

Cons:

  • It is very space-consuming
  • Unable to run everything simultaneously or for a long time

FAQ’s 

1- What is the reliability of Generac whole-house generators?

Generac is the number one brand in North America and among the most reputable brands in the home power supply market. It has been making safe and powerful power generation products for residential and industrial applications for more than six decades.

2- How much does a Generac generator cost?

The Generac home generator cost is approximately $2,000 to $5,000 for a 7 to 24 kW whole-house unit, plus installation costs of approximately $3,000 to $5,000. During power outages, Generac’s standby generators automatically turn on and operate on natural gas or liquid propane. 

3- Can I run my house with a 20kW generator?

The 20KW generator will provide you with enough power to run your essential home appliances if you lose power. Additionally, it can support the normal operation of appliances such as refrigerators, light bulbs, and heaters. On Amazon, 20kW Generac whole house generator cost is approximately $6000.

Looking for a Smaller Generac Generator?

If you want a Generac inverter generator 3500, then click here. This model comes with 3500 starting watts and 3000 running watts. If you want a generator with a lower wattage, Generac’s 7117 Gp2200i is the perfect option, with 2200 starting watts and 1700 running watts. Amazon currently lists the Generac gp2200i price at approximately $569 – Click here to check it out. Each of these Generac models is suitable for light use, like camping or a small worksite.

Final Words

Getting a whole house generator is a good investment if you live in an area with frequent power cuts. There are many reasons you should make Generac your preferred brand of generators. Generally, the quality of construction, power output, and reliability of these generators are highly commendable. 

We have gathered some of the best Generac Whole House Generators to suit your needs. We hope that you will benefit from our 8 Best Generac Whole House Generator Reviews in order to make a wise buying decision.

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