Whole House Generators

What Is A Whole House Generator?

A whole house generator can provide backup electricity for an entire house, whenever blackouts or a power outage arises. They are important because people depend a lot on electric appliances and power is needed at all times. Standby generators cannot be used on a continuous basis, as a matter of fact, it is used for a short span of time only. You will need something that will be able to supply uninterrupted electricity throughout the day. This is when a whole house generator can come handy. Their generation capacity is measured in tens of kilowatts, and it is a great idea to add an ATS or automatic transfer switch to your generator system. When electric power gets cut off, or when there is a blackout in your area, the ATS will disconnect your house temporarily from the grid and the generator can start working in its stead.

Load of Whole House Generators


The capacity of your whole house generator will depend on how many electric appliances you have to operate during a power outage. Typically, a 12 KW whole house generator can suffice in meeting a whole family’s needs in case of blackouts. However, if you can’t live without hot water baths or air conditioning, a generator set can help and it will not cost that much. The best way to find the right whole house generator is, to sum up, all the wattage of the electric appliances that you will need running at the same time.

Whole House Generator Fuel Type

There are various types of fuel used in whole house generators. It can include gasoline, propane, diesel, and natural gas. So, which is the best, cleanest, and most economical of all? Fuel consumption can vary depending on certain factors such as load, brands, and climate. A generator load calculator can help you with your estimation.

Generators can run on gasoline for convenience. A basic 5,000 watts generator can consume almost 18 gallons of gasoline over a period of one day or 24 hours period. That is why more and more people are using inverter generators. Many of these provide an economy code which varies fuel consumption based on load. The most efficient types are the gasoline generators. Typically, one tank fuel can be from 1 to 2 gallons that can last for about 8 to 10 hours. Thus, running 2 inverter generators with 2000 to 4000 watts power together can be more efficient than running a bigger 5000-watt open frame generator set.

How Long Do Whole House Generators Run?

Natural Gas

Many homes these days have a supply of natural gas pumped into their home. This makes natural gas very a convenient way to fuel their whole house generators.  When you consider natural gas generators, it will be tied up with an existing application to power it. A 20 KW unit at full load can use about 290ft³/hour. Operating a 30 KW unit would use approximately 418ft³/hour with a full load.

Propane Gas

Generators running on propane gas are considered the most eco-friendly. Propane has a longer shelf life, it is easily stored in tanks, and is clean burning. Propane is burned real fast, a 20 KW generator can burn approximately 3.40 gallons per hour and a 35 KW unit can use up to 6 gallons per hour.

The biggest disadvantage of a propane generator unit is its bottle capacity. Standard propane can be used up in a whole day’s use. Thus, those that have propane generators must have 2 to 3 reserve tanks if they intend to be off the grid for an extended period of time. Those that usually engage in camping and backcountry activities can tend to care more on their impact on the environment. Using propane powered generators is one way to reduce the carbon footprint of any outdoor activity.


There are so many generators that make use of diesel fuel, the ones that do are far more efficient than gasoline. Diesel is less flammable compared to other fuel types and is less expensive. For instance, a 20 KW unit can use 1.8 gallons per hour working a full load. The 30 KW unit can use about 3 gallons per hour running on the same full load. Many diesel generator units are meant for industrial sites, emergency back up generators or are permanently installed on bigger pusher rolling vehicles or RVs.

Depending on your planned use of a generator, you will have to factor in all of the information on fuel use and capacity in order to make an informed buying decision. The kind of fuel you will use will help you narrow down your choices when it comes to buying a whole house generator.

Major Features of Whole House Generators

The capacity of a whole house generator can range from 22 kilowatts to 48 kilowatts. The adequate power supply will give you peace of mind knowing that you will not have to make difficult choices such as choosing whether or not to run your air conditioner, or power up the refrigerator. Your house will be very close to becoming fully functional as if there is no power outage at all.

Here are some of major features and perks of whole house generators:

  • Whole house generators are liquid cooled as opposed to air cooled which is why it can handle prolonged power outage times.
  • They have high-quality automotive type engines.
  • Reduced noise while on the operation as it has lower RPMs.
  • Fuel efficient.
  • Able to back up the entire home.
  • Better load management and A/C shed options.
  • Longer maintenance interval.
  • It increases the value of a home.
  • When hooked up to the natural gas line, they can have indefinite run times which can be beneficial when outages can last for extended periods of time.
  • Indefinite running time can be valuable in critical conditions where frequent tank change cannot be an option. This is practical in cases where the inhabitants at home are elderly people or are physically unable to change the fuel tank in inclement weather conditions.
  • Whole house generators are convenient to use owing to their fixed placement and automatic switch application. Depending on the configuration of the power generator, the switch can generate power by a simple push of a button or automatically when it detects a power outage.
  • Whole house generators switch on automatically to provide power within 10-30 seconds of power interruption. This is highly beneficial to homeowners depending on electrically powered medical gadgets and devices, or sensitive home equipment as computers, etc.


Whole house generators come in various sizes which allows customized power solutions to meet all power needs.

5 Best Whole House Generator Sets


  1. Generac Guardian 16kW Standby Generator NG/LP Single Phase Steel  | 6459

Whole House Generators


Generac Guardian 16kW Standby Generator offers the necessary circuit power protection for your whole house, making sure the important appliances remain powered when there is a power outage. It is useful in powering up an entire house when paired with one of Generac’s load-shedding switches.

The Generac Guardian 16kW Standby Generator can back up a 5-ton air conditioner. It generators can get you through several days and weeks without utility power. The engine is an OHVI and is especially designed for generators. It affords reliability to help power an entire house in the most severe of power outages. This top of the line generator set comes with an intuitive controller that has a 2-line LCD text display, multilingual, and with backlit operating buttons. It is also NFPA certified to be installed in homes.

  1. Generac 7037 16/16 Kw Air-Cooled Standby Generator, Aluminum

Whole House Generators

The Generac 7037 16/16 Kw Air-Cooled Standby Generator provides automatic back up the power you need for your whole home. It can be connected to an existing natural gas fuel supply. It starts automatically when it senses any loss of power and will operate for as long as needed until such time that power from the utility company returns.

The Generac 7037 can cover essential circuits and or a whole house coverage when needed. This unit can provide benefits that other competitors are unable to level up or match. Generac’s generator series can guarantee you reliability and peace of mind as well savings on installation that other home generators are unable to provide. It features an easy installation process as it comes with detachable door panels, base pad, efficient wiring systems, and minimal ground preparation. It offers innovative engine design and rigorous testing to create the most dependable generator sets possible.

  1. Generac 70361 Home Standby Generator 16/16 kw Air-Cooled with Wi-Fi, Aluminum

    Generac 70361 Home Standby Generator comes with a compact and durable aluminum body. It is capable of powering approximately 16 circuits of your home with its 100 amp, NEMA 3R indoor and outdoor rated transfer switch. It affords essential circuit power protection for homes, which ensures all the necessities remain powered regardless of an outage especially when paired with Generac’s load shedding switch. It is capable of backing up a 5-ton air conditioner unit. Generac’s generators offer automatic backup power to protect your entire home and family in times of power outages. They also offer a 5-year warranty on their generator sets.


  1. Generac 70351 16/16 Kw Air-Cooled WiFi Home Standby Generator, Aluminum

Generac 70351 16/16 Kw Air-Cooled WiFi Home Standby Generator offers automatic back up power for your entire house when there is a power outage. It measures 48x25x29 inches and weighs 419 pounds. It comes with a compact and durable aluminum body. It is capable of powering a 4-ton air-conditioning unit. It has a Generac OHVI 992 CC engine, 12v auto start and an engine RPM of 3600. Generac 70351 can be connected to an existing natural gas fuel supply, it starts automatically when it sense any loss of power and will operate for as long as needed until such time that power from the utility provider returns.


  1. Briggs & Stratton 40401 16000-Watt Home Standby Generator System with 200 Amp Automatic Transfer Switch

    You can protect your home and your investment from power outages with the Briggs & Stratton 40401 16000-Watt Home Standby Generator System. It affords reliable power with highly flexible options to meet all of your essential home power needs. It instantly powers your home seconds after it senses a power outage. The Briggs & Stratton 40401 comes with a heavy-duty, rust-resistant, galvanneal steel cover. This is guaranteed to endure chips, abrasions, and wear and tear.


The 16 KW generator has Symphony II Power Management to help you manage your power needs at home and can run 5-ton air conditioning unit saving you tons than your old beat up 20KW unit. Its Symphony II Power Management can help meet all your electrification needs and help you save a lot of money in the long term.


The Briggs & Stratton 40401 complies with NFPA 37 standards meaning it can be placed 18 inches away from your home which is perfect for very close lot lines and gives you flexible placement and installation options. It is rated to run on areas with very low natural gas pressure and can operate at 3.5 to 7 inches water column. The Briggs and Stratton company offers a 4-year limited warranty for all of their generator sets. Safeguard your home and family from power outages and blackouts with  Briggs and Stratton 16kw standby generator sets.

Whole House Generators:Waiting for you to sit on the sofa!


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