Top 3 Best Generac Whole House Generators Reviews (2022 Updated)

best Generac whole house generator reviews

When picking up a reliable generator for home use, Generac is widely rated as a pioneer in the industry. Are Generac generators suitable for your demands? Which is the best Generac generator on the market?

Let’s check out the following Generac whole house generator reviews for more information on this well-known brand and its best-rated products.

*This post may have affiliate links, which means I may receive commissions if you choose to purchase through links I provide (at no extra cost to you). As an Amazon Associate I earn from qualifying purchases. Please read my disclaimer for additional details.

About Generac

Generac (Generac Holding Inc.) is one of the largest worldwide well-known manufacturers of home standby generators.

generac logo

Generac was founded in 1959 by Robert Kern and has its headquarters in Waukesha, Wisconsin. Nowadays, its products are manufactured in many facilities in Berlin, Oshkosh, Whitewater, Eagle.

Generac was known for its wide range of backup power products with a power output from 800W to 9MegaWatts. Its products range from portable, residential to commercial/industrial types.

Besides, it also makes manual and automatic transfer switches and accessories for backup power up to 2MegaWatts. Its products are crafted to meet the most demanding environments and withstand harsh weather elements.

Whole-house generators of Generac are reliable choices for many families. They are offered at affordable price tags yet have excellent usability, safety, and extreme durability.

A Generac home generator will maintain the normal function of essential appliances in your house securely. You can set this generator to either power your whole home or only some rooms in your house to save energy.

Top 3 Best Generac Whole House Generators 2022

Product ImageProduct NameFeaturesPrice
Generac 7676 GP8000EBest Portable GeneratorSee latest Price
Generac 7129 GP3000iBest Inverter GeneratorSee latest Price
Generac Guardian 70432Best Home Standby GeneratorSee latest Price

In-depth 3 Top Rated Generac Whole House Generator Reviews

1. Generac 7676 GP8000E – Best Portable Generator


  • Weight: 198 pounds
  • Starting wattage: 10,000 watts
  • Running wattage: 8,000 Watts
  • Dimensions: 27.2″ W x 27″ D x 26.5” H
  • Voltage: 240V

Check Latest Price

Not as expensive as industrial items of Honda or CAT, Generac 7676 is an affordable solution for your home use.

  • Power Rush technology

A key feature of this portable generator is that it inherits Generac’s Power Rush technology.

With the peak load capacity of 10,000W, this backup power supply offers a 30% extra power boost for home equipment that requires a higher starting wattage, like refrigerator/freezer (2,200W), window AC of 10,000BTU (3,600W).

After that, it can maintain a constant running rate load of 8,000W, which is sufficient to run your essential appliances at home or for outdoor activities.

How about the tank capacity? Its large fuel tank contains 7.9 gallons, providing a maximum of 11 hours runtime at 50% load.

  • Lightweight and easy storage

Weight and sizing are two essential criteria for residential generators. This generator has 27.2 x 27 x 26.5 inches, making it easy for transportation or storage. You can take it out only when you need it and store it in your home garage without taking up much space.

Let’s put Generac 7676 in comparison with other counterparts.

While many generators with running wattage of 5,000W, or lower that weigh over 200 pounds on the market, this Generac item weighs only 198 pounds. Thus, it is relatively portable. Since it features a paddled folding handle and thick rear wheels, you can move it around your property.

2. Generac 7129 GP3000i – Best Inverter Generator


  • Weight: 59.5 pounds
  • Voltage: 120V
  • Dimensions (LxWxH): 22.2 x 13.3 x 18.4 inches
  • Starting wattage: 3,000 watts
  • Running wattage: 2,300 watts

Check Latest Price

Generac GP3000i is a top-rated model in the GP Series of the worldwide well-known manufacturer Generac. This generator is designed to allow freedom to use your electronics outdoors or in places that lack power. Let’s see what’s hidden inside this portable power supply!

  • Quiet & efficient

This Generac generator is marked as an “inverter,” meaning that it can maintain electric power for a longer time with less fuel and oil waste. True Power technology promises to deliver clean and stable energy for sensitive electronics, appliances, and tools. This device has a maximum runtime of 4.5 hours at 50% load.

If you only have low current requirements, you can switch this device to Economy Mode to automatically adjust the engine speed to save fuel, reduce sound.

Another advantage of an inverter generator like Generac GP3000i is that it produces fewer noise emissions compared to a non-inverter one. For example, this 3000W generator produces a 65-67dB noise level, while a 300W item like Briggs & Stratton 30545 has a higher noise level of 68dB.

  • Lightweight

While almost all generators are pretty heavy and bulky, this portable model only weighs 59.5 pounds. It is also relatively small, with sizing of 22.2 x 13.3 x 18.4 inches. You can place it on your car or farm vehicles for emergency use.

  • Convenient & Connectible

Small but mighty, Generac 7129 is sufficient for running all of your electronics. It boasts a starting wattage of 3,000W and a running wattage of 2,300W.

Moreover, there are 2 USB outlets, allowing you to charge your mobile devices like smartphones, tablets, etc. Thanks to this powerful beast, a movie night in the forest, a weekend camping trip, etc., all enjoyable activities are possible.

Since this portable generator is parallel-ready, you can connect two units with the same output to double your power supply if you want. Please notice that the parallel kit is sold separately.

3. Generac Guardian 70432 – Best Home Standby Generator


  • Weight: 526 pounds
  • Voltage: 240V
  • Dimensions (LxWxH): 48 x 25 x 29 inches
  • Wattage: 22,000 watts

Check Latest Price

Guardian 70432 was released in 2018 under the Guardian Series of the #1 best-selling home standby generator brand. While the two above models offer portability and affordability, this premium price tag promises to deliver excellent power for heavy-duty pieces of equipment. Protect all your valuable home electronics from damages with this Generac standby generator!

  • Up to 22,000W

This generator comes with a starting output of 22,000W and a running output of 195,000W, which is appropriate to protect all electronic devices in your house.

You can use it to safely maintain the operation of devices with high running wattages like washing machines, electric water heaters, refrigerators, dehumidifiers, or some sensitive items like your laptop or television.

  • Smart connect & user-friendly

There is no need to go out in the cold because you can manage its operation via your mobile devices. The free Mobile Link allows you to check real-time status updates of the generator via your smartphone, tablet, or computer.

Additionally, you can check via the battery status or maintenance intervals via a large multi-lingual LCD screen on the generator from anywhere, at any time.

  • Well-built for harsh outdoor conditions

You can use this Guardian indoors for running your home appliances or outdoors for farm or construction work. It is well-built to withstand harsh weather conditions.

First, this generator has a Rhino Coat powder-coated finish that is highly resistant to corrosions or damages for all weather elements.

Second, its aluminum enclosure meets the NEMA 3R rating of the National Electrical Manufacturers Association. This standardization means that this enclosure can provide overall safety for the device, thus prolonging its lifetime usage.

It keeps all electrical parts against odd elements like sleet, snow, falling rain, or external ice formation. Inside, it prevents water drops from leaking inside or causing severe damages to the running engine.

Frequently Asked Questions

1. Are Generac whole house generators reliable?

Generac is the #1 best-selling in North America and also the most trusted brand for home power supply. This manufacturer has been on the market since 1959 and has more than 5 decades of a reputation for making powerful and safe power generation products for residential and industrial use.

2. How long can you run a Generac whole house generator?

A Generac whole house generator can run continuously for 3000 hours, provided it is adequately maintained and oil.

3. Will a 20kW generator run my house?

Yes, a 20KW generator will give you sufficient power to run your essential home appliances during a power outage. More specifically, it can maintain the normal functions of appliances like refrigerators, light bulbs, and heaters for 2 hours.

Review Summary

After reading the above Generac whole house generator reviews, you have learned that Generac is a trusted brand in the power supply industry. 7 out of 10 homeowners are satisfied with its products. Besides, it has various budget-friendly items. So you can pick up the most suitable model for your home without spending too much money.

Generac 7676 is the most affordable yet powerful option for home use. This generator comes with essential functions to maintain the normal working status of your essential appliances.

Leave a Reply

Your email address will not be published. Required fields are marked *