There are many options for the homeowner and business operator when the time comes to choose a generator: so many, in fact, that it can be quite confusing to the uninitiated.

What type of fuel do you prefer – diesel or petrol?

Do you need a small “emergency” generator for the home, or one with a great amount of power to act as a back up when the mains electricity is not available to your business?

If you don’t have much knowledge as to how generators work, you will find it difficult to select one.

How then, do you make a choice? As a first step, you should decide for what precise role you will need the generator, as this is a good method of determining the capacity.

If you require a generator to use in the home environment, it would not make sense to choose a heavy duty industrial generator, as it would provide much more power than you need.

Similarly, if you need to run machinery, a small generator will not be powerful enough as it is likely to fail when you need it most.

Diesel and petrol generators operate in a similar way.

Diesel electrical generators are most often found in agricultural environments, on construction sites and in factories and warehouses: in fact, anywhere there is a need for a portable and reliable source of energy.

This can be because there is no mains power (for example construction sites) or the power supply cannot always be relied upon (agricultural areas and factories).

When you are working out your generator requirements, you need to opt for the most efficient model. The size of the silent generator is indicated by the output and speed provided by the manufacturer: usually, a more powerful generator has a higher output and speed.

The majority of generators range between an output of 5KVA (kilovolt-ampere units) and 2500KVA. The lower KVA generators can be used in the home, whereas the more powerful ones provide more than enough power for most industrial applications.

Generator Efficiency

The model’s efficiency is the initial step: however, it is also necessary to calculate the load you have to supply. To do this, you simply have to work out the power demand, whether this be in the home or the business, during normal operating conditions.

The amount of power that the generator is able to provide will tell you whether it is adequate enough to meet the needs of your home or business: the capacity of the fuel tank only determines how long the generator will operate between refueling.It is always sensible to choose a generator that provides a little more power than you require, thus reducing the possibility of overloading.

Generators Noise level

Another factor you may have to consider is the noise level of the portable generators. Does the generator need to be run during the night in the home? If this is the case, it is a good idea to choose a silent diesel generator as the noise level of these is much lower than traditional diesel generators.

It is also sensible to choose a silent diesel generator with a decent sized fuel tank, to ensure that it runs overnight, thereby avoiding refueling in the middle of the night. The decibel output is not such a problem if it is used in an industrial situation, or during the day.

If the generator is to be used only occasionally, it makes sense to purchase a good quality used generator, as this will save you a significant amount of money.

Having a generator available for emergency situations, such as natural disasters or power outages, or even when there is no existing mains electricity (camping is one such example) is good idea.

HoweverBusiness Management Articles, you have to do your research and carefully choose a generator that best suits your individual needs.

Generac 7043 Guardian Series 22kW/19.5kW Air Cooled Home Standby Generator with Whole House 200 Amp Transfer Switch 

From essentials like heating, cooling and lights, to daily necessities like cooking, laundry and the kid’s bath-time, our lives run on electricity.

Unfortunately, our modern lifestyles are in ever-greater jeopardy; power outages are occurring more frequently than ever and lasting longer, with devastating effects. Protect your home and family with a Generac automatic standby generator and keep life going without disruption.

As the #1 selling home standby generator brand, Generac’s Guardian Series generators provide the automatic backup power you need to protect your home and family during a power outage.

Generac’s new Guardian Series 22kW backup generator, the industry’s largest air-cooled generator available, provides home and business owners with the best value per kilowatt available in the market today. Connected to your existing LP or natural gas fuel supply, it kicks in within seconds of sensing power loss – automatically – and runs for as long as necessary until utility power returns.

Choose from just enough power to cover essential circuits or whole house coverage. Generac’s Guardian Series offers benefits that few competitors can match.

This new lineup of home standby generators were created to save you money on installation while offering the same reliability and peace of mind you get from all Generac home standby generators. Features that simplify the process for installers include removable door panels, a base pad that requires minimal ground preparation and more efficient wiring techniques that save time on installation. Innovative engine design and rigorous testing are at the heart of Generac’s success in providing the most reliable generators possible.


Generac’s G-force engine line up offers added peace of mind and reliability for when you need it the most. All backed by 24/7/365 customer support and a nationwide dealer network of more than 5000 strong.

Generac will Back You Up.

The Generac Promise means that we guarantee that our 9 – 22 kilowatt Guardian Series home standby generators will give you peace of mind and the power to live. It means that they engineer and build them here in America. It means they stand behind them with a strong 5-year limited warranty. They promise to continue to innovate, like their Mobile Link cellular monitoring system, so you’ll know the status of your generator, no matter where you are.

Quick facts on the Generac 7043 Guardian Series

  • True Power Technology delivers best-in class power quality (less than 5% THD) for smooth operation of sensitive electronics and appliances
  • Includes a 200 Amp NEMA 3 (indoor / outdoor rated) whole house smart transfer switch
  • Generac’s Evolution Controller features LED indicators for generator status, utility power presence or maintenance required
  • Tough, durable all-weather aluminum enclosure offers 3 removable sides for easy access for installation, service and maintenance
  • Battery Not Included. Generac battery model 5819 sold separately.

5-Year Limited Warranty

5-year limited warranty for Generac automatic standby generators.

True Power Technology

Delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances.

Engineered and Built in the USA*

Generac generators and engines are Engineered and Built in the USA*

*Built in the USA using foreign and domestic parts.

Generac G-Force Engine

Purpose-built, pressure-lubricated engine capable of handling the rigors of generator use, resulting in power that’s more reliable and requires less routine maintenance.

Quiet-Test Self-Test Mode

Runs at a lower RPM for a five or twelve minute test, making generators significantly quieter while consuming less fuel.

Tough, Durable All-Aluminum Enclosures

Our RhinoCoat powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions.

Smart, User-Friendly Controls

Generac’s Evolution Controller features a multilingual LCD display that allows you to monitor battery status and track maintenance intervals to ensure your generator is always in top operating condition.

Mobile Link Remote Monitoring

Allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and the generator’s maintenance schedule. Connect your account to your authorized service dealer for fast, friendly and convenient assistance (Sold Separately).

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Briggs & Stratton 40394 20000-Watt Home Standby Generator System with 100 Amp Automatic Transfer Switch

Protect your home and family from power outages with Briggs and Stratton 20kw standby generator systems. perfect for large-sized homes.

Briggs and Stratton provides reliable power and flexible options to meet your home’s essential power needs. Managed whole house power system powers your household appliances plus up to two air conditioners. automatically powers your home in seconds after sensing a power outage.


These standby generators are powered by commercial-grade vanguard engines that are design-engineered to dependably take on the most demanding jobs.

Tested against tough national fire protection agency standards, our 20kw standby generators can be placed as close as 18″ (where code allows) from the home providing more placement options in your yard, perfect for tight lot lines.

Rust-resistant, Galvanneal steel enclosures are made from the same materials and paint process used in the automotive industry, resulting in years of protection against chips/abrasions.

100 amp Transfer Switch

The 100 amp Symphony II Transfer Switch provides power to more of your household appliances. Featuring our patented Symphony II Power Management, the 100 amp automatic transfer switch manages the load of 1 or 2 air conditioners while keeping household appliances powered.

Symphony II Quick facts

  • Reliable, commercial-grade Briggs & Stratton Vanguard engine handles the most demanding jobs
  • Comprehensive 5-year parts AND labor limited warranty
  • Rated for operation in areas with low natural gas pressure. This home generator can operate at 3.5” to 7” water column
  • Compliancy with the NFPA 37 standard means it can be placed as close as 18″ from your home for flexible placement options – perfect for tight lot lines
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