3 Best Whole House Generators

This article will cover what is a whole house (standby) generator, how much power do these generators produce, pricing, and we’ll review the best whole house generators.

We will also look at their pros and cons to help you decide on which generator is right for your power needs.

We will also look at their pros and cons to help you decide on which generator is right for your power needs.


Best Whole House Generators

 

Generac Standy Generators vs Champion 14kW Generator vs Briggs and Statton 20K Generator Comparison

Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators, 12 Volts DC, 525 Cold Cranking Amps, Dimensions (LxWxH) 8.7" x 6.8" x 7.6"
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Champion 14KW 754cc aXis Standby Generator w/ 200amp Transfer Switch #100837
Starting Watts
Running Watts
Powered By
Duel Fuel
Weight
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Size
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Engine Type
Colours
Noise Output (dBA)
CARB Compliant
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Fuel Capacity
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Briggs & Stratton 40621 20kW w/ 200 Amp Symphony II Switch Standby Generator, Gray
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Running Watts
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Duel Fuel
Weight
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Size
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Engine Type
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Colours
Noise Output (dBA)
CARB Compliant
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Fuel Capacity
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Run Time
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Warranty Length
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Generac Standby Generator

Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators, 12 Volts DC, 525 Cold Cranking Amps, Dimensions (LxWxH) 8.7' x 6.8' x 7.6'

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The true mark of a best whole house generator that can power a house is efficiency, sufficient watts, and proficiency – The Generac Standy  generator checks all the boxes. Is it the perfect generator?

Let’s find out….

The true mark of a best whole house generator that can power a house is efficiency, sufficient watts, and proficiency – The Generac Standby  generator checks all the boxes.

Is it the perfect generator? Let’s find out.

It boasts 22,000 watts that could run on propane and slightly step down to 19,500 watts when using a natural gas line.

The sheer power and efficiency are impressive – by a long shot, it can power the whole house’s electrical appliances.

Generac standby generators integrate an LCD screen that displays battery status and monitors routine maintenance to ensure the machine operates in tip-top condition.

In addition, it features mobile link remote monitoring that allows you to check the workings of your generator from any part of the world.

All you need is a smartphone, tablet, or PC to know the status of your generator with a click.

The G-force engine is rather impressive – it is pressure-lubricated and can carry about any whole house load you throw at it.

On durability, we are blown by the dedicated craftsmanship of the manufacturers – utilizing a Rhino coat finish that is resistant to rust and can stand the perils of outdoors.

The Generac generator is brimming with unique features. Here are some features of this standby generator for homes;

  • True Power technology – Help to deliver enough power with less than 5 percent total harmonic, which is fitting for sensitive electrical units.
  • Propane & Natural gas – Either of the two provides more options for powering the unit up. Depending on your discretion, you can use propane or natural gas. However, the fuel consumption for propane is lower.
  • You can monitor the system using Mobile Link Remote Monitoring.
  • It has a 200 amp NEMA 3 (works well both indoors and outdoors) whole house Smart transfer switch.
  • The G-force engine provides smooth operation.
  • LED indicators allow users to know the status of the battery or maintenance required
  • Quiet Test – ensures it runs at a lower RPM, but it could get loud at up to 80dB

Generac Standby Generator PROS

  • Multilingual LCD & mobile monitoring ensures you tackle problems that might come up
  • Massive and enormous watts to cater for the whole house electrical appliances
  • It features a self-test mode that allows users to know everything works fine
  • The coated finish makes it resistant to adverse weather conditions
  • It comes with a 5-year warranty

erac Standby Generator CONS

  • Constant maintenance & professional checks are required.
Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators, 12 Volts DC, 525 Cold Cranking Amps, Dimensions (LxWxH) 8.7' x 6.8' x 7.6'

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Champion 14kW Generator

Champion 14KW 754cc aXis Standby Generator w/ 200amp Transfer Switch #100837

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If you’ve been around the generator space, then Champion generators shouldn’t be alien to you.

The company is at the helm of creating high-end, top-of-the-line generators of all kinds ranging from a portable generator to RV, construction, and much more.

The Champion 14kW generator  is unlike other standby generators on the market.

It would be normal to mistake it for a Lambo – this owes to the switchblade doors.

If there’s a generator design award, the champion 14kW would easily win it.

But it doesn’t stop there; as a matter of fact, there’s more than meets the eye.

The champion generator is an absolute beast in terms of performance – it runs on a 14kW and provides up to 14 000 watts of power on liquid propane and steps down to 12 500 watts when connected to a natural gas line.

The Champion Power Equipment 754cc OHV engine delivers faithfully, powering all essential appliances in homes effortlessly.

This portable generator operates even in weather extremes; you can trust it to provide backup power during power outages.

It also performs weekly self-diagnostic tests to monitor the status and notify you when there are maintenance needs.

Compared to machines in its class of weight, this is by far the quietest as it registers a 63dba noise level.

Sound dampening and a low tone muffler provide a quiet operation.

Topped with a 10-year warranty, your mind will be at rest knowing you are actively covered for defects.

To understand the full features of the Champion 14kW generator is to see it with your eyes.

But since you can’t, we’ve made sure to include the most important points that will ensure you make an informed decision.

Rest assured, it can handle your air conditioning units, electronics, dishwasher, refrigerator, washing machines, etc.

Champion 14kW Generator PROS

  • It has a sound-dampening lining and a low-tone muffler that reduces noise better than most models in its class.
  • The standby generator operates in adverse conditions that range from -22° F – 104° F without warming.
  • Conserves fuel and provides 10-year limited warranty / free lifetime technical support
  • It comes with a durable enclosure that protects the body system.

Champion 14kW Generator CONS

  • It’s heavy
Champion 14KW 754cc aXis Standby Generator w/ 200amp Transfer Switch #100837

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Briggs and Stratton 20kW Generator

Briggs & Stratton 40621 20kW w/ 200 Amp Symphony II Switch Standby Generator, Gray

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With a rated power supply of 20kW output, the Briggs Stratton will be perfect for whole-house operations.

It integrates a supercharged engine that is reliable and fast – expect the unit to supply power itself automatically after a power outage.

In addition, the Briggs and Stratton 20kW generator integrates a 200amp transfer switch for seamless power transfer between electricity mains and generators.

The Briggs Stratton dual-fuel generators run on liquid propane or natural gas.

As seen in most generators, there’s a slight difference in the standby generator capacity when using either fuel. For example, natural gas runs at 18,000 watts and 20,000 watts on propane.

Another perk to the Briggs Stratton generator is a quiet operation – Thanks to the dampening mechanism, noise emanating is bearable, and you won’t have your neighbors disturbed. On the downside, installation is complex; assembling the Briggs & Stratton unit would require a handyman for this.

Briggs and Stratton 20kW Generator PROS

  • Remote monitoring
  • Flexible power management
  • Features a ventilation vent that transports carbon far from the residence
  • Placed at 18 inches – the Briggs Stratton passed the National Fire Protection Agency standards.

Briggs and Stratton 20kW Generator CONS

  • The setup is hard – you’ll probably need a handyman
Briggs & Stratton 40621 20kW w/ 200 Amp Symphony II Switch Standby Generator, Gray

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Whole House Generators Buyer’s Guide: What to Know

A generator is unlike any other home electronic.

There’s are some basic things you need to know before you dip into your purse. Most of the home standby generators can relatively power most average homes or larger homes.

First, however, you need to know a standby generator’s watts and power output to ascertain whether it has enough power for your home electronics.

The good news is the units on our list can do a better work of powering at the very least a house, two air-conditioners and other less power demanding electronics.

Below we have written a concise guide to help you choose the ideal generator for your needs.

Size & Power Output

When it comes to the size of home standby generators, most are generally big as the power output.

Most of the models are gigantic.

Thus a sizable space should be reserved for accommodation. As a buyer, you’ll first want to confirm the size of house generators and compare it to the space in your home.

Quiet Operation

In the US, there’s are noise regulations relating to sound that restrict the amount and the duration for different hours of the day.

Therefore, it is essential to know the restrictions of noise in your jurisdiction.

Again, while not all the standby generators on the list operate quietly, the former operates considerably quieter compared to other models of the same class.

Fuel Conservation and Transfer Switch

There’s no denying the fact that a bigger generator consumes more fuel than the average unit on the market.

The higher the wattage output, the expensive it gets. The least watts are 8kW and can power your home, a refrigerator, air conditioner, and other small electronics.

If you want to know the total watts of electronics in your home, read an article that covers the A-Z of calculating the total watts of electronic appliances.

Warranty

A whole house generator is expensive and costs extra dollars for maintenance.

To have peace of mind after you make a hefty purchase, you should know the terms and conditions.

A great warranty from the brand should cover manufacturing defects; if it doesn’t, you are better off with a unit with a better warranty and customer feedback/support.

Benefits of a Whole House Generator

There are many benefits of having a whole-house generator.

However, the most important, reliability and flexible options when there’s a power outage from the mains.

Some benefits of standby generators include but are not limited to the following;

Reliable Backup Options For Homes

In times of power outage, you can resort to standby generators. They possess enormous output capacity to power high electronic loads like air conditioning units, washing machines, etc.

Moreover, these units are specially made to cater to the average home. Therefore, you can expect it to cater to standard equipment easily efficiently.

Money Saver

How can equipment cost a huge sum of money and still save you money? Well, I found it funny too.

There’s no question. The maintenance and fuel consumption of a generator will cost you money.

However, when there’s an extended power outage, no better equipment will save you money for hotel bookings than a standby generator.

Areas plagued with likely hurricanes or natural disasters should seriously consider buying a portable generator to ensure they are not stranded when disaster strikes.

Less Maintenance

A Standby generator requires less maintenance compared to a portable generator. Therefore, they are better to buy life equipment than any other type of unit.

Sure, they don’t come cheap either, but they are a worthy investment that will see you enjoy many years of use.

Quiet Operation

Generally, a portable generator is loud, with the average clocking 64dB or more, while standby generators match the same dB range. They have a better-muffled mechanism, making the sound bearable.

Also Read: Best Dual Fuel Generators [2022]


Frequently Asked Questions About Whole House Generators (FAQs)

What is a Standby Generator?

A standby generator is also known as (whole house), is an emergency power backup electrical system that is automatically powered when there is an outage.

This process is usually quick, and within seconds, the transfer switch transfers the load to the utility to turn off and does the same when power is back in the mains.

Whole-house generator systems usually require weekly self-run tests to ensure the unit is kept in tip-top condition for light supply in the case of an outage.

Building standards typically require residential generators as critical for the safety of buildings, medical & life support, and high-rise buildings. Most home generators utilize standby units because of the enormous power it holds.

Residential homes use it to power air conditioning systems, refrigerators, water heaters, security systems, etc.

What Is The Average Cost To Have A Whole House Generator Installed?

The installation cost of standby generators depends on the power output. For example, a 20kW generator installation can cost

etween $2000-$6000. However, this is by no means a one-fit rule; even generators of the same power output could have a price difference due to brand influence.

What Standby Generator Do I Need To Run A Big House?

First, to be precise, you have to calculate the total output of electronics. It is not rocket science.

Check the watt of an appliance from the manual, add up all watts from all appliances to be powered.

The total amount of the kW realized should be multiplied by 2. Say the recognized figure is 12kW multiply it by x2, which would be 24.

This process is a safety precaution to ensure you have sufficient power output and reliability at all times.

On average, a 7500-watt generator should power your house. But it depends on the load of the electric equipment.

Do you need a permit to install a whole-house generator?

Absolutely. Especially if you need a transfer switch permanently installed. The electrician will secure all the required permits and ensure you meet the statutory standard before installation.

What do they run on?

Natural gas Liquid propane Diesel

Your budget and environmental awareness play a crucial role in which is better.

Natural Gas, Diesel, Or Liquid Propane – Which Is Better?

Your budget and environmental awareness play a crucial role in which is better.

When it comes to zero-carbon monoxide poisoning, higher power output, clean energy, then Liquid propane is ideal—working on a budget?

Natural gas is cheaper thus perfect for you. On the other hand, diesel has massive power that works relatively better than the two in most systems.

 

How Do Residential Generators Work?

A home generator has two components; the automatic transfer switch and the generator unit.

The transfer switch detects a power outage and automatically sends power by running the generator without manual control. However, you need a professional, especially if you want to power a part of your home.

The professional wires the automatic transfer switch only to portions of the home you want to have electricity.

Even if you want the entire house powered, there’s a need for a qualified individual to see the wiring is executed properly.

The automatic transfer switch also turns itself off when the power comes on. The importance of having a solid and reliable transfer switch provides hands-off operation.

 

Is It Environmental Friendly?

Natural gas is the fuel used in most generators. It constitutes of hydrocarbon gas mixture consisting of methane, releasing carbon dioxide when burned which is environmentally damaging.

Even the other fuel types – Propane and Diesel, although less menacing than natural gas, have severe effects on the environment.

 

Will A 22kw Generator Run My House?

It depends on the load of equipment in your home. To calculate if a standby generator would suffice, use a wattage calculator here.

The general rule of thumb is to calculate the Watt use of all the equipment you intend to power and find a generator with enough efficiency to power the necessities.

 

How Much Do Whole House Generators Cost?

A home generator price, depending on the size, will cost as low as $1000 to as high as around $8,000.


So, Which is The Best Generator For Powering The Whole House?

All of these generators have enough power to supply a whole house.. but which one is best?

There is no one-size fits all answer as they each have their pros and cons and specializations and everyones needs and preferences are different.

 

Performance

The Generac 22kW generator is the best performing whole house generator and has a maximum power output of 22,000 Watts.

Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators, 12 Volts DC, 525 Cold Cranking Amps, Dimensions (LxWxH) 8.7' x 6.8' x 7.6'

 

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Price

The Champion 14kW is the most affordable option.

Champion 14KW 754cc aXis Standby Generator w/ 200amp Transfer Switch #100837

 

Safety

The Generac 22kW has the best safety features including low oil alert as well as mobile/computer access to the status of this generator. Also includes 24/7 customer support and a 5 year warranty, protecting your financial investment.

Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators, 12 Volts DC, 525 Cold Cranking Amps, Dimensions (LxWxH) 8.7' x 6.8' x 7.6'

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Noise

The Champion 14kW is the most quiet option at only 62 dB

Champion 14KW 754cc aXis Standby Generator w/ 200amp Transfer Switch #100837

 

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3 Top Generators That Will Power The Whole House

We believe the best whole house generator overall is the Generac 22kW because of its high power output and great safety features.

Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators, 12 Volts DC, 525 Cold Cranking Amps, Dimensions (LxWxH) 8.7' x 6.8' x 7.6'

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The Champion 14kW is the most affordable and quiet option.

Champion 14KW 754cc aXis Standby Generator w/ 200amp Transfer Switch #100837

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Best Generators Under $500

Last update on 2022-09-07 / Affiliate links / Images from Amazon Product Advertising API