Best Whole House Propane Generator

Best whole house propane generator- Complete Buyer’s Guide & Reviews {Updated 2020}

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Investing in one of the best whole house generators is one action you will take and never regret because it is a wise investment. Having a well-constructed, long-term machine will give you a stable and consistent power supply for a longer period.

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When there is a power outage, all you have to do is just turn to your whole house generator to keep your home and your business running.

According to a survey, about 60% of power outages are caused by storms, whereas 34% are caused by overloaded electrical grids.

A standby whole house propane generator works as a backup system when there is a power outage. This is a good investment if you live in an area where there is constant blackout that goes out for normal.

Best Whole House Propane Generator

You will benefit a lot from whole house generators. A lot of things can cause power outages, from natural disasters to bad weather, and without electricity, a lot of our normal activities are affected.

Without electricity, there is no internet, food goes bad, and so many other services are put to a halt. This puts us in an uncomfortable situation. The best whole house generators are designed to supply power for an entire home.

However, even though buying whole house generators are a necessary investment, trying to choose the best one for you on the market can be very challenging, as the whole house generators are big, industrials, and also highly sophisticated.

Choosing between the many options on the market can be tasking for the average consumer.

Benefits of Whole-House Propane Generator

Whole house propane generators have higher quality automotive-style engine rather than the lawn-mower style on a home standby.

Larger models are liquid-cooled instead of air coolers. This helps handle the extended outage times.

Best whole house propane generator

Whole house prone generator noises are not loud and they have longer maintenance internal. They also have load Management & A/C Shedding Options. They also back up the whole house instead of the essential circuits, and they are fuel-efficient.


Best whole house propane generator:-

  1. Generac 7043 Home Standby Generator-

If you are looking for a large standby home generator, the 22kW should be your choice. It is the largest in the market. It delivers all the features and functionality customers want plus MSRP which is the lowest cost per kW of any air-cooled whole house generator.

This unit supplies total coverage for every home. It also comes with tough, long-lasting, enclosures made of aluminum. It has a Rhino-coat powder-coated finish that makes it corrosion-resistant which makes it function well though all weather conditions.

Generac 7043 Home Standby Generator 22kW/19.5kW Air Cooled with Whole House 200 Amp Transfer Switch, Aluminum.

It also features a self-test mode that runs for twelve minutes. The lower RPM makes the generator quiet and consumes less fuel.

It comes with a mobile link remote monitoring that monitors the status of your generator. That means, anywhere you are in the world, you can monitor your gen using a tablet, smartphone, or PC. You can access information easily. You can check the operating status and its maintenance schedule.

Generac 7043 Home Standby Generator

It comes with an authorized service dealer that allows fast and friendly assistance that is sold separately.

The engines of Generac generators are constructed and assembled in the USA. Its evolution controller comes with a multilingual LCD for monitoring battery status.

Its purpose-built, pressure-lubricated engine handles the rigors of generator use. This provides power that is reliable and does not require plenty of routine maintenance.

Pros & Cons

  • It comes with 5-Year Limited Warranty
  • The unit is engineered and constructed in the USA
  • It has strong and durable all-aluminum enclosures
  • It comes with mobile link remote monitoring
  • It has a long-lasting extreme weather-resistant design
  • This unit has a quiet self-test mode
  • This unit requires frequent maintenance from an electrician
  • It doesn’t have a battery
  • Its warranty does not cover its spare parts


  1. Briggs & Stratton 40346 2000-

The Briggs & Stallion 40396 is constructed to be a solid backup source of power for every home and in any circumstance. This engine will deliver 20,000 watts of power in just a few seconds of a power outage.

This puts your mind at rest, knowing that there is still a source of power for your home in any case of emergency.

Although not everyone will need the power it supplies, this generator can power 2 air conditioning units plus other appliances you have in your house. It comes with a 2×200 Amp transfer switch that handles the seamless switch.

Briggs & Stratton 40346 20000-Watt Home Standby Generator System with 200 Amp Automatic Transfer Switch The symphony power system is responsible for the operations of this generator.

It works to regulate power usage to get the most of the watts. This allows your generator to power more than one high wattage devices at once without the risk of overloading.

Briggs & Stratton 40346 2000

This generator is a wise investment for people who live in the Southeastern U.S. and usually experience a power outage during the hottest months. This engine is designed to provide enough power for your home without making too much noise.

The unit is certainly noticeable from outside but you shouldn’t be able to hear the noise it makes from inside your home. Installing this generator is very straightforward. A professional DIYer can handle it.


Pros & Cons

  • Unit is relatively quiet
  • The engine is highly reliable
  • Installation is very easy
  • It provides lots of efficient power
  • The transfer switch may be too large
  • The unit is heavy


  1. Kohler 20RESCL-100LC16-

Best whole house generator natural gas. Kohler is a popular name when it comes to home power and cooling appliances and Kohler 20RESCL is a good one from this manufacturer. It can perform more than portable generators.

It has enough power to run everything in a big house. It comes with a transfer switch that turns the generator on immediately power outage occurs.

With this generator, power will be returned to your home within 10 seconds. And the installation of the generator is very easy. This unit also holds up well for a long time and its motor unit is well-built and air-cooled for long life.

You can leaveit outside because it has a corrosion-proof finish on it. It is also perfect for seaside installation. Kohler 20RESCL-100LC16 Air-Cooled Standby Generator with 100 Amp Transfer Switch Single Phase, 20,000-Watt.

Kohler 20RESCL 100LC16

It has a real-time power status and can also manage your entire backup system. One thing to keep in mind is that this generator is a stationary unit only. To give the unit any portability at all, you have to mount it on a large truck. It has a 5-year warranty that is backed by Kohler’s reliability and performance.

Pros & Cons

  • It has 20,000-watt power
  • Its transfer switch is 100 Amp
  • It is air-cooler
  • The unit runs on LP or natural gas
  • Its voltage regulation is +/-1%
  • It comes with a 2000 hour or 5-year warranty
  • This unit is heavy to put in place


  1. Champion Power Equipment 100294-

Quietest whole house generator. Champion’s 14-kW provides 24/7 power for the whole house, giving you the satisfaction that all your appliances are working fine even when there is a power outage.

This unit is very quiet and it does not need you to refuel it. It is designed to function perfectly in sub-zero temperatures as well as extreme heat, plus it also comes with a 10-year manufacturer warranty.

Champion 100294 kicks on automatically when there is a power outage and kicks off when the power is restored.

The unit’s 24-volt starting system can work in temperatures that range from -22° F to 104° F without the need for a warming kit. Its sub-panel style transfer switch comes with 8 circuits. Champion Power Equipment 100294 Home Standby Generator.

The total harmonic distortion is below 5%, so you shouldn’t bother about the fragile electronics getting damaged. It has a minimum footprint. You can keep it 18 inches from your house.

Champion Power Equipment 100294

It also has an anti-corrosive enclosure that will help it withstand a storm and salty environment. The generator’s onboard battery charger charges it every time, so you will always have the starting power you need when there is an emergency.

This unit is connected to your natural gas system or propane, so you will never need to refuel it. This generator also performs self-diagnostic tests every week.

Pros & Cons

  • The unit works perfectly in no temperature and serious heat conditions
  • It protects and supports fragile electronics.
  • The unit starts automatically when there is a power outage
  • It comes with a 10-year limited warranty
  • The installation of this unit consumes time and requires technical support


  1. Generac 6729 Guardian Series-

Generac 6237 is one of the best whole house generators that will provide you awesome services. This is unit is CARB Compliant and has 8kW Air Cooled 100 Amp Automatic Transfer Switch with a 10-circuit load center.

It also comes with 30-foot, 5-foot, and 2-foot pre-wired conduits, an outdoor connection box, a 1-foot flexible fuel line pigtail for sophisticated usages.

Generac 6729 Guardian Series, 20kW Air Cooled Standby Generator, Natural Gas/Liquid Propane Powered, Steel Enclosed, with 200-Amp Service Rated Switch.

The generator is 48 x 25 x 29 inches dimension and 360 pounds weight. It uses liquid propane and natural gas and comes with a hands-free operation without a manual start and no need to refuel.

It also doesn’t come with extension cords. The generator allows smooth operation of sensitive appliances. It comes with the owner’s manual, installation guide, UL, CUL, as well as EPA compliant for safety.

Generac 6729 Guardian Series

This unit also comes with a 5-year limited warranty from the manufacturer.

Pros & Cons

  • It runs on natural gas and liquid propane
  • The unit supplies True power technology with smooth and clean operation
  • Comes with an auto system for power loss
  • It is automatic
  • It comes with a five-year warranty
  • The unit is 360 pounds, so it is too big to carry
  • The unit needs air to be cool
  • Bad quality control


Whole House Generator FAQ

Are whole home generators even worth the investment?

This is the kind of question that only you are going to be able to answer for yourself.

At the same time, there’s a reason why the whole home/standby generator industry has been growing by leaps and bounds in just the last few years. People want to make sure that in the event of an emergency situation they do not go without power, especially considering how important it is to have electricity on a consistent basis these days.

The odds are pretty good that if you’re looking to protect yourself, your family, and your property in an emergency a whole home/standby generator is the right investment to make.


What safety measures one should take when using a whole house generator?

  • Avoid storing your generator in closed areas
  • Always maintain the distance from your house
  • Thoroughly read and follow the instruction manual
  • Always use dry hands when touching the generator, no matter whether it is in a working condition or not.
  • When refilling, always switch off the generator first and allow it to cool.


How long does a whole house generator last?

It depends on the build quality of your generator and the quality and frequency of maintenance. But if we talk about the average lifespan of a whole house generator, then it is of 15 years in normal standby conditions.


Is it essential to focus on the THD rating of the whole house generator?

Yes, it is equally important to consider the THD rating of your whole house generator so that you can power your most sensitive electronics without any fear. Make sure the THD rating of your selected generator is less than 5%.


What size whole house generator do you need?

To know the size of the generator your house will need, all you have to do is add up the wattage of all the things you want to power when the power goes off.

Before you start calculating, you have to keep in mind that some appliances such as air conditioners, sump pumps, and refrigerators for instance —consume more wattage briefly when they’re cycling on, which can shake off what you’ve if you don’t consider them.

Also, you have to pin down on the wattage you hardwire appliances will need. You will have to ask your electrician. Most household appliances can be powered with 3000 to 6500 watts.

If your house has a small furnace and city water, this should cover your needs. However, if your house has a larger furnace and/or a good pump, what you need is a 5000 to 6000 watt whole home generator.

If you want the ultimate entry-level whole house standby generator, then a 22kW is an excellent choice for you. Also, a 27-36kW generator is perfect for most homes because they replace 75% of the 200 amps that comes into your home’s electrical panel.

The load-managing ware of these generators is advanced, so you will barely notice that your air conditioners don’t kick on at the same time so that they won’t overload the system.

If you want your entire home to be backed up as if the light never went out, a 48kW generator is excellent, as it can produce 220 amps of electricity at 240 volts, which happens to be almost the same power that comes from the utility.


Final verdict

If you want to be sure that you aren’t ever left unprotected in an emergency situation, and want to guarantee that you always have access to electricity no matter what might be happening to the grid around you, a whole home/standby generator is the way to go.

Use the inside information we’ve provided through out this quick guide to find a top-tier whole home/standby generator. It isn’t a decision you’ll ever regret making!

Even though Champion Power Equipment 100294 is costlier compared to other models on our list, it is the best in terms of a power outage, warranty, and also has a 200-amp automatic transfer switch. Also, it is the quietest and doesn’t make more than 63 dB, which it the sound intensity of a muffled conversation.

Generac 6552 is the second best whole house generator. It can support both liquid propane and natural gas and has a power output of around 22kW. It also comes with a 200-amp automatic transfer switch, which switches on the generator when electricity is cut off. The generator has an anti-corrosive aluminum enclosure that protects its engine during extreme conditions. We highly recommend it to those who live near the sea.

Briggs & Stratton 40445 is our budget pick. It has a power output of 8kW and comes with a 50-amp transfer switch, which is weather resistant. Also, Briggs & Stratton offer five years limited warranty on the product. You can either fuel it up with natural gas or liquid propane at your choice. We hope that our guide was a helpful hand in your search for the best whole house generator. If you know other great generators that we overlooked, please share in the comments.



When it comes to powering your home, having the best standby propane generator is of paramount importance. Our whole house generator reviews provide you with a rough idea of what to look for when purchasing one.

We have also included all the vital information that you should consider when getting the best whole house generator for your home. We hope you liked this article and welcome feedback from you.

We’d love to know what you liked most about our standby generator reviews. By now, you know what to look for in the best home generator most suitable for your space. You can be confident that your home is protected from power outages.


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