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6 Best Whole House Generators | Reviews + Buyer’s Guide

Imagine attending a zoom call for work or using the treadmill for your daily workout, and suddenly, everything just shuts down!

Best Whole House Generators 1

A majority of our tasks in the day are dependent on electricity. Power failure can hamper anyone’s daily routine, which can become quite inconvenient. A power outage is all too common for people living in areas that see challenging weather conditions like thunderstorms or hurricanes. This is why having a whole house generator is quite beneficial.

There is no need to worry about the power failing, come hell or high water, with a whole house generator. But, which among the sea of generators is worth considering? That’s what we are here for. We have put together comprehensive reviews of the 6 best whole house generators available right now and a buyer’s guide to help you make an informed decision.

That being said, let’s dive right into it. 

Salesman is Showing Couple of Clients New Generator.

Here's the list of the 6 best whole-house generators that will keep your home powered up through any outage, ensuring your daily routines and activities are uninterrupted.

1. Westinghouse Outdoor Portable Generator - Best for Whole House

A popular name in the electrical industry, Westinghouse offers quality products with a lot of power, and its generators are no different. It manufactures these generators in a way that focuses on making life easier and more comfortable for whoever uses them. Let’s explore a bit more and see what features make this product special.

Westinghouse Outdoor Power Equipment 12500 Peak Watt Home...
  • 9500 Running Watts and 12500 Peak Watts; Remote Start With...
  • Features Two GFCI 120V 5–20R Standard Household...

Why Did We Like It?

As mentioned, Westinghouse ensures that the generators it produces are high in quality and power. This is what makes it an excellent portable generator for the whole house. This product with 12,500 peak watts and 9,500 running watts of energy will ensure that all key appliances like the fridge, AC, lights, and so on run smoothly.

When it comes to its design, it is quite user-friendly. This machine has a push-button for electric start, so switching it on is as easy as it can get. Additionally, it has a fob key that can start from up to 260 ft. away. Even maintaining it is very easy and requires minimal effort.

Overall, it is very easy to use and will keep key appliances on without you intervening. It also has a 12-hour runtime and a 6.6 gallon tank. It is safe to use as well since all outlets have a rubber cover to protect your hands.

What Could’ve Been Better?

Among the glowing reviews for this product, there were some consistent complaints about the machine being a bit heavy-duty, though the wheels make it easy to move it around. Apart from that, certain reviewers have also mentioned that the customer care team is not supportive.


  • Easy push-button and fob key start
  • Automatic low oil indication
  • Easy to maintain
  • Powerful machine


  • Heavy and bulky machine

Wattage: 12,500W | Engine: 457 cc | Dimensions: 27.3" x 26.3" x 22.6" | Weight: 220 pounds | Voltage: 120V | Runtime: 12 hours | Tank Volume: 6.6 Gallons

2. DuroMax Portable Generator - Best for Dual-Fuel Capability

Another great one to consider is the powerful DuroMax portable generator. Packed with features, this one is guaranteed not to leave you in the dark. It is also quite durable as it has a 100% copper construction. DuroMax prides itself on manufacturing generators that are compact but work like a pro.

DuroMax XP12000EH Generator-12000 Watt Gas or Propane...
  • With 12,000 watts of power, the XP12000EH Dual Fuel...
  • DuroMax is the industry leader in Dual Fuel portable...

Why Did We Like It?

One of the best things about this generator is that it can run on gas as well as propane. Since it has dual-fuel technology, it offers a certain degree of flexibility and versatility. It is an eco-friendly product that is affordable and long-lasting. Moreover, it is a powerful machine with 12,500 starting watts and 9,500 running watts.

Allow us to elaborate a little more on the power this generator has to offer. This unit has a 7-hour runtime on propane and an 8-hour runtime on gas. Additionally, it is capable of handling all key appliances of the house, from lights to fridges to air conditioners and even medical equipment.

Coming to the make of the unit, it has an all-metal construction. All the windings in this generator are made out of copper, and it is an 8.3-gallon tank. Not only is it ideal for home but also for job sites and on camping trips.

What Could’ve Been Better?

This generator is quite powerful, which is probably why it is also very noisy. Reviewers complain that it does not operate quietly which is surprising since its competitors can do the same thing but with 50% less noise. Some users also mention that the instruction manual is confusing.


  • Can run on propane and gas
  • Powerful engine
  • Ideal for households and RVs
  • Durable make


  • Noisy

Wattage: 12,000W | Engine: 457 cc | Dimensions: 30" x 29" x 26" | Weight: 224 pounds | Voltage: 240V | Runtime: 8 hours | Tank Volume: 8.3 Gallons

3. A-iPower Portable Generator - Best for Budget-Friendly Option

Buying a generator for power back up in the house doesn’t always have to cost a fortune. The A-iPower portable generator is ideal for anyone looking for an affordable yet efficient unit. There are many features that make this powerful and easy to use. Let’s have a look at some of them.

A-iPower SUA12000ED 12000 Watt Portable Generator Heavy Duty...
  • The A-iPower SUA12000 Dual Fuel generator produces 12,000...
  • Powerful 459 cc OHV 4 stroke engine with a low oil alert...

Why Did We Like It?

One of the main reasons this unit stood out was because it offered a lot at a very nominal price. It is a powerful generator with a 459 cc engine that offers up to 9,500 running watts. It is ideal for anyone looking for power backup at home. It is guaranteed to support all key appliances.

Now, let’s talk about the make. It has a 7-gallon tank and is made out of steel. With the power it has to offer, this unit can run for about 8-9 hours at 50% energy, effortlessly. Although, many users have claimed that it kept running for 13 hours. Additionally, it is safe to use since all outlets have rubber covers.

To sum it up, it is a great generator to consider for people on a tight budget. It has plenty of modern features that make it user-friendly, like an electric start button and a low oil alert. If the oil is too low, the unit automatically shuts down.

What Could’ve Been Better?

One major downside of this particular unit is that it tends to leak oil after being used for a few hours, which can be inconvenient and unsafe. Another common complaint amongst reviewers is that customer care is not supportive.


  • Safe to use
  • Sturdy make
  • Adequately sized tank
  • User-friendly


  • Tends to leak

Wattage: 12,000W | Engine: 459 cc | Dimensions: 10.63" x 8.66" x 8.27" | Weight: 214 pounds | Voltage: 240V | Runtime: 7 hours | Tank Volume: 7 Gallons

4. Generac Portable Generator

The next generator we will be reviewing is the one from Generac. This is a great, compact, and powerful unit that is ideal not just in every home but also in commercial spaces like job sites. It has the power of a professional generator but with modern features that make it user-friendly.

Generac 5734 GP15000E 15000-Watt Gas-Powered Portable...
  • Robust and Portable: The generator features a sturdy steel...
  • Durable and Long-Lasting Engine: Generac's OHVI engine is...

Why Did We Like it?

Generac is a very popular brand because the generator it produces is powerful, durable, and very user-friendly. Even though it has a small frame, it offers 15,000 running watts of energy which is ideal for a whole house generator. With this kind of power, it can supply energy to all the key appliances of the house.

Coming to some of its features, it has an x-torq engine which ensures the unit performs to its maximum capability. It also has a 16-gallon tank that gives this unit the capacity to run more than 10 hours. Some of its user-friendly features include a low oil indicator and automatic shutdown.

Also, you can rest assured that the unit will not make a lot of noise when it comes to operation. It has a low-tone muffler that lowers the generator’s noise blending it into the other noises outside. This unit comes with a bunch of accessories, including a first oil supply and a 2-year warranty.

What Could’ve Been Better?

A very consistent complaint with this unit is the lack of support from customer care. Many reviewers have mentioned that despite frequent requests, customer care fails to solve the problems. Plus, it is a heavy machine, and the wheels do not help in moving it.


  • Small frame
  • Large fuel tank capacity
  • Very powerful
  • Noiseless operation


  • Unsatisfactory customer care

Wattage: 15,000W | Engine: 992 cc | Dimensions: 10.63" x 8.66" x 8.27" | Weight: 373 pounds | Voltage: 120V | Runtime: 10 hours | Tank Volume: 16 Gallons

5. Generac Home Standby Generator

This is another great Generac generator worth considering. If you are looking for something powerful but more advanced with smart features, this is a great option. This unit is the perfect blend of having a machine that works like a pro but is in tune with the times in its looks.

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Why Did We Like It?

The main reason why this unit stood out was its energy capacity. This compact unit offers 22,000 watt energy on propane and 19,500 watt energy on gas which is one of the highest we have seen. It is clear that this unit is more than capable of being a whole-house generator and supplies energy to key appliances.

Another reason this is highly recommended is because of its smart features. This unit has an LCD to show the battery status. It also tells if the generator needs maintenance. In addition, the unit administers self-tests which ensures that the unit uses less fuel. It also has a quiet operation.

Overall, it is a durable unit that is coated with RhinoCoat to ensure that no part corrodes over time. This also makes the generator perfect for all weather conditions.

What Could’ve Been Better?

This generator can work for a long time in any house. However, there is a significant flaw. The unit does not charge while supplying power to the house, which can be problematic if the generator runs out of battery. Reviewers have also mentioned issues with oil leaks.


  • Easy to understand LCD
  • Self-test and quiet test mode
  • Powerful unit
  • Durable make


  • Generator does not charge while supplying power

Wattage: 22,000W | Engine: 439 cc | Dimensions: 48" x 25" x 29" | Weight: 515 pounds | Voltage: 120V | Runtime: N/A | Tank Volume: 5 Gallons

6. Champion Home Standby Generator

The home standby generator by Champion is quite impressive. It offers smart features that ensure it is user-friendly, powerful, and durable. The company itself has an excellent customer support team who are always ready to help. Let’s have a look at some of this unit’s features that make it unique.

Champion 8.5-kW Home Standby Generator with 50-Amp...
  • Totally Automatic – The ATS50 Emergency Essentials...
  • Quietest-in-Class – Thanks to advanced sound dampening and...

Why Did We Like It?

The Champion home standby generator is quite powerful yet ideal for any home. While it is compact, it does have a lot to offer. It is fully automatic and can provide smooth and seamless supply of energy to your house. It provides 8,500 watts of energy on propane and 7,500 watts on gas which is enough to power key appliances.

Also, it has a 24-volt starting system that ensures it comes on even in harsh cold or hot climates. There is no requirement to warm it up using any kits. This unit has an advanced low-tone muffler that lowers the noise it creates, making it ideal for any residential space.

Lastly, the unit comes with a 10-year warranty and free tech support for life. This makes it easy in case there are any issues with the unit. However, the generator is weather-resistant and made of steel so there shouldn’t be any problems.

What Could’ve Been Better?

Unlike most other generators that we have reviewed, this one does not have any wheels. So, since it is a heavy-duty unit, moving it around can be difficult. Moreover, the installation might require professional help, which is not an issue since their support team is very responsive.


  • Automatic unit
  • Noiseless operation
  • Excellent customer support
  • Can come on in any climate


  • No wheels to move it

Wattage: 12,500W | Engine: 717 cc | Dimensions: 52.4" x 33.5" x 32.1" | Weight: 456 pounds | Voltage: 120V | Runtime: N/A | Tank Volume: 5 Gallons

Best Whole House Generators Comparison Table

ProductWattageEngineDimensionsWeightVoltageRuntimeTank Volume
Westinghouse Outdoor Portable Generator12,500W457 cc27.3″ x 26.3″ x 22.6″220 pounds120V12 hours6.6 Gallons
DuroMax Portable Generator12,000W457 cc30″ x 29″ x 26″224 pounds240V8 hours8.3 Gallons
A-iPower Portable Generator12,000W459 cc10.63″ x 8.66″ x 8.27″214 pounds240V7 hours7 Gallons
Generac Portable Generator15,000W992 cc10.63″ x 8.66″ x 8.27″373 pounds120V10 hours16 Gallons
Generac Home Standby Generator22,000W439 cc48″ x 25″ x 29″515 pounds120VN/A5 Gallons
Champion Home Standby Generator12,500W717 cc52.4″ x 33.5″ x 32.1″456 pounds120VN/A5 Gallons

Buying Guide For The Best Whole House Generator

As you might be able to tell, the generators we have reviewed are similar but also unique in their way. Each of them has a set of advantages and disadvantages that need to be carefully considered before buying one. It is crucial to look at what it has to offer with great detail and then take a call.

To help you understand what to look at, we have gathered some information on the essential features of a generator. Hopefully, this buyer’s guide will give a bit of clarity on the topic. Now, let’s get right into it.

Power Requirement

The most crucial thing to consider here is how much power the generator has to supply. And, this is entirely dependent on the house and the appliances. If you plan on running bigger appliances like induction cooktops, or air conditioners, we suggest a unit that supplies more than 15,000 watts of energy.

However, it is a different story if you only want basic key appliances to work like a few lights and fans. In that case, getting something that supplies energy between 5000-10,000 will be more beneficial.


Generators usually work either gas or propane, although some units are equipped with running on both. Propane-based generators are more powerful than gas, but natural gas is more readily available in the house. Either way, it will be more beneficial to have a unit with dual-fuel technology so you can get the best of both worlds.


For the generator to be compatible with the house, it is essential to check the voltage output. In general, all home generators can be used on a 120-volt and a 240-volt output and sometimes interchangeably in the same unit.

Fuel Consumption

In case you are on the lookout for a high-power output generator, it is important to remember it will consume a lot of fuel. In such situations, it can be beneficial to pick a unit with a big fuel tank capacity so that you do not spend exorbitant amounts.

Size Of The Engine

The size of the engine is what determines the power outage. The engine size is usually above 900ccs for high-power generators and can supply more than 18,000 watts of energy. At the same time, mid-range ones are around 700-900cc and supply between 5,000 to 10,000 watts of energy. The choice is entirely yours.

Noise Level

Having a heavy-duty generator does expose you to the possibility of a lot of noise. This can be inconvenient if there are babies or light sleepers in the house. Thankfully, not all generators make a lot of noise. Keep an eye out for the noise each unit makes and ensure it is equal to or less than 60 decibels.

Whole House Generators FAQs

  • How does a whole house generator work?

    A whole house generator works by using an internal combustion engine, usually fueled by gas or propane, to generate electricity. When a power outage occurs, the generator’s automatic transfer switch detects the loss of utility power and activates the generator. It then supplies power to the house through the electrical panel, providing electricity to all the connected circuits and appliances.

  • Should I choose a gas or propane whole house generator?

    The choice between a gas or propane whole house generator depends on factors such as fuel availability, cost, and personal preference. Gasoline generators are typically less expensive but require regular refueling and can be less efficient. Propane generators are cleaner-burning, often more fuel-efficient, and offer longer shelf life for the fuel. Dual-fuel generators, which can run on both gas and propane, provide added flexibility.

  • Can a whole house generator run on natural gas?

    Yes, some whole house generators are designed to run on natural gas. Natural gas generators are connected directly to the gas supply line of the house, eliminating the need for refueling. They are often more convenient for homeowners with access to a natural gas line.

  • How noisy are whole house generators?

    The noise level of a whole house generator is an important consideration, especially if you have noise-sensitive individuals in your household or neighbors nearby. Most modern whole house generators are designed to operate quietly, with noise levels ranging from 50 to 70 decibels (dB) at a typical operating distance. Look for generators with lower noise ratings, preferably below 60 decibels, for quieter operation.

  • Do whole house generators require maintenance?

    Yes, whole house generators require regular maintenance to ensure optimal performance and longevity. This typically includes periodic inspections, oil and filter changes, spark plug replacements, and battery checks. It’s recommended to follow the manufacturer’s maintenance schedule and consider professional servicing to keep the generator in good working condition.

  • Best Whole House Generators

    With that, we finally come to the end of this review of the 6 best whole-house generators. We hope this, along with the buyer’s guide, can be of assistance when you pick a generator for the house.

    From the above 6 Best Whole House Generators, here are the top three expert recommendations. The Westinghouse Outdoor Portable Generator is an ideal option for its high quality, powerful performance, and user-friendly design.

    The DuroMax Portable Generator is a good option, offering dual-fuel technology, durability, and versatility. Finally, the A-iPower Portable Generator is the right choice for those on a tight budget, providing ample power, modern features, and affordability.

    We shall now bid farewell to you, but we promise to be back soon with more comprehensive reviews and guides. See you next time!

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