Find the Best Generator Brands
Compare Reviews for Top Generator Brands
|Generac Power Systems|
Read 249 Reviews
Founded in 1959 and based in Waukesha, Wisconsin, Generac makes power generators for industrial and residential markets. It rebranded its line of industrial generators in 2009 to include ergonomic and aesthetic changes.
|Champion Power Equipment|
Read 27 Reviews
Founded in 2003 and based in Santa Fe Springs, California, Champion Power Equipment designs and produces engines, winches, log splitters and multiple types of generators. It has sold over 2.5 million generators in North America.
Read 610 Reviews
Westinghouse was founded in 1886 and is headquartered in Monroeville, Pennsylvania. It designs and manufactures appliances including portable conventional and inverter generators for home, work and recreational use.
Read 29 Reviews
Kohler began in 1873 and is based in Kohler, Wisconsin. It is a manufacturing company that makes plumbing products, engines and generators. Its generators are sold at over 22,000 dealers across the globe.
|Briggs and Stratton Generators|
Read 37 Reviews
Founded in 1908 and headquartered in Wauwatosa, Wisconsin, Briggs and Stratton manufactures and sells gasoline engines worldwide. Additionally, it makes portable, home standby, inverter and commercial standby generators.
Read 7 Reviews
Honeywell was founded over 110 years ago and is headquartered in Morris Plains, New Jersey. It makes a variety of engineered commercial and consumer products including generators for home, business and mobile needs.
Read 28 Reviews
Established in 1948 and based in Minato, Tokyo, Japan, Honda designs, manufactures and sells power products from aircraft to generators. It makes a line of portable inverter generators for work, home and recreational purposes.
Read 17 Reviews
Yamaha was founded in 1887 and is based in Hamamatsu, Shizuoka, Japan. It designs and makes multiple products including power sports equipment and electronics, as well as multiple models of inverter and premium-grade generators.
Read 17 Reviews
General Electric was founded over 120 years ago and is based in Boston. It designs and manufactures products in the power and water, oil and gas and transportation sectors, as well as consumer power products such as generators.
|All Power Generators||Read Author Review|
Founded in 2005 and headquartered in North Carolina, All Power is a global manufacturer and distributor of outdoor power equipment, including engines, pressure washers, compressors, generators and digital generators.
How to buy a generator
How do you determine the correct generator size and output?
Determining the size of generator to buy comes down to which household appliances you want to power in the event of an outage. This will determine the kilowatt/watt capacity and the installation wiring of the generator, with most home standby generators being permanently connected.
- Wattage: Generator manufacturers interchange the use of watts and kilowatts (one kilowatt equals 1,000 watts). A typical small- to medium-sized home needs a generator that produces around 3,000-8,000 watts, with larger, luxury homes and big businesses needing 50,000-200,000 watts.
- Rectifiers: Newer generator models include a rectifier, which converts electrical output into smooth electrical waves, also known as sine waves. Sine waves are needed to power sensitive electronics like laptops, TVs and other high-end devices. Generators with rectifiers are more expensive but can be very efficient.
- Single vs. three-phase: Single- and three-phase generators produce power differently, with a single-phase generator using one wave to produce power and a three-phase generator producing three separate waves of power, delivered in one sequence, ensuring uninterrupted power flow. Most residential power is single-phase power so most homes only need a single-phase generator, while most luxury homes and large businesses require a three-phase generator.
What types of fuel do generators use?
Generators generally use one of three types of fuel: gasoline, propane or diesel. Residential and commercial standby generators typically connect to the property’s fuel source to prevent the need to constantly refuel, while portable and inverter generators require manual filling.
- Gasoline: Gasoline powers the majority of smaller, portable generators used for recreation purposes. They work by using a spark plug to ignite the gasoline and require manual refilling.
- Natural gas: Natural gas is a popular option for home and commercial standby generators because you can connect them straight to the natural gas line that feeds into your property, eliminating the need to refuel your unit manually.
- Propane/Liquid propane: Propane-powered generators are generally more expensive to operate because propane itself is more expensive than natural gas. However, you can get propane delivered to your home or use your home’s liquid propane line to provide continuous fuel flow.
- Diesel: Diesel generators are preferred over gasoline because diesel engines are more efficient, producing more power at lower speeds. Diesel is cheaper and more fuel efficient than gasoline.
- Dual-fuel: Dual-fuel generators are capable of using two types of fuel at the same time, using a governor that gradually adds the secondary fuel source until the optimal mixture is achieved for efficient operation.
How fuel efficient are generators?
It's always a good idea to know the estimated run time and how fuel efficient the generator you are interested in is, especially if it's one that requires you to refill the fuel supply manually. Many new generator models are fairly fuel-efficient, regardless of the fuel type. Large, standby units have technology that lets them maximize power and minimize fuel use.
- Fuel efficiency: Natural gas and liquid propane are becoming the most popular types of residential and commercial standby generators because they are the most fuel efficient. Fuel efficiency will vary depending on the load it is operating under. For example, a natural gas powered 22-kilowatt generator will burn around three and a half gallons per minute on a full load, while a 38-kilowatt unit will burn around five and a half gallons per hour on a full load.
- Load management: Some larger models of standby generators have load-management technology that lets them operate at maximum efficiency. Load management technology is designed to prevent too many high-current appliances from operating at the same time by automatically sensing if large appliances like an air conditioner or electric water heater should run or not.
How loud are generators?
The noise level a generator can produce is important. Whether you’re camping with a portable generator or at home when your standby generator kicks on, you’ll want a unit that runs smoothly and quietly. All generators are marked with a decibel rating, which is measured at an industry standard of 23 feet away from the generator.
- Decibels: Most generators should run at or below 70 decibels (dB), which is about the equivalent of being in a car traveling 65 miles per hour. Most residential standby generators are designed to be quiet and produce about the same amount of decibels as an air conditioning unit (66-69dB).
- Sound-reducing enclosures: Most new generator models use sound-reducing enclosures that keep units operating at around 65 dB for large residential and commercial standby units.
- Inverter portable generators: If you are camping or near other people and need a quiet, portable generator, inverter generators are typically the quietest type because of the way they generate power.
What kind of advanced technology do generators use?
Modern generators have advanced features that make them more efficient, easier to use and maintain and more reliable than older models. From devices that automatically detect a power outage to a device that connects to cellular networks so you can use a mobile app to monitor your unit remotely, technology has made owning a generator relatively hassle-free.
- Transfer switches: Transfer switches switch an electrical load between two sources. They are used with home and commercial standby generators to detect power outages and automatically switch the power load to the generator when one is detected. Once power is restored, it switches the power load back to the main source. Modern transfer switches can operate as fast as ten seconds of downtime in the event of an outage. Most companies sell them separately but require them for home and commercial units.
- Paralleling systems: Paralleling systems are typically used for large businesses like hospitals, airports and data centers and work by synchronizing multiple generators to produce more power. Large boats use paralleling systems to connect multiple generators located in various parts of the vessel.
- Low-oil shutoff: Most new generator models are equipped with low-oil shutoff capabilities. This prevents engine damage due to low oil levels.
- Electric start with backup: Many portable generators are designed with an electric start, eliminating the need for a recoil rope starter, although those are still used as backups to the electric start.
- Remote monitoring: Residential and commercial standby generators equipped with remote monitoring devices use wireless networks to relay operating data to a mobile app. Remote monitoring is popular with businesses so they can monitor their company’s power status.
How much does it cost to have a standby generator installed?
Most standby and whole house generators are installed as permanent fixtures outside of your house on a concrete pad, similar to an air conditioning unit. Standby generators that power your main appliances in the event of an outage cost less to install than whole house generators that power your entire house.
- Standby generator: A standby generator is intended to power your main appliances in the event of an outage. Small to medium -sized standby generators cost around $500-$1,000 to install.
- Whole-house generator: Large generators that power your entire home when the power goes out typically come with an installation fee of around $3,000-$5,000.
- Additional costs: Some additional costs to consider before having a generator permanently installed include the concrete pad that the generator sits on, as well as the transfer switch. Transfer switches cost around $200 and must be installed in your power-inlet box by a professional electrician.
What are the different types of generators?
Home standby generators
Home standby generators sit close to your home like an air conditioning unit and hook up to your property's electrical system and natural gas source. They are connected to a transfer switch which lets the generator know when your home loses power and automatically turns it on seconds later. Home standby generators come in various sizes and output wattage depending on the size of your home and how many appliances you need to power.
Commercial standby generators
Commercial standby generators are similar to home standby generators but on a larger scale. Commercial models can use paralleling systems to connect multiple generators and provide more power from a single line.
Single vs. three-phase generators
Single- and three- phase generators provide power differently. Both types provide alternating current (AC) power, but a three-phase generator produces three separate waves of power, delivered in one sequence, ensuring uninterrupted power flow. Most residential power is single-phase, therefore requiring only a single-phase generator. Large businesses like hospitals, airports and data centers require three-phase systems.
Inverter generators produce direct current (DC) power and convert it to alternating current (AC) power. This process creates a smoother electrical current, which is more stable and safer for electronic devices.
Portable generators are light enough to carry or have a built-in set of wheels to make them easier to move to different locations. Small portable generators are mainly used for recreational purposes, while larger, industrial portable generators are used to power remote work sites.
Who would benefit from a generator?
Home standby generators provide a sense of comfort knowing your home will still maintain power in the event of a power outage. Most home standby generators can be hooked up to your home’s fuel source and installed with a transfer switch to kick on within seconds after you lose power.
Businesses with backup generators will never lose revenue due to lost productivity or downtime during a power outage. Essential businesses like hospitals, airports, data centers or government facilities will never have to worry about not being able to perform critical tasks when the power goes out.
People with RVs and campers
If you own an RV or camper, a portable generator can power your appliances like TVs, electric grill, satellite receiver, portable fan or radiant heater.
People who host outdoor events
If you like to entertain or host events outdoors, a portable generator will allow you to power outdoor lights, heaters, fans and more.
Boat owners use portable and backup generators to power their boat’s electric supply. Larger vessels can use multiple generators hooked up together to create more wattage from a single line.
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Information in this guide is general in nature and is intended for informational purposes only; it is not legal, health, investment or tax advice. ConsumerAffairs.com makes no representation as to the accuracy of the information provided and assumes no liability for any damages or loss arising from its use.