9 Best Gas Generators in 2021

Best Gas Generators, Generators are widely used at homes to power appliances and electronics during power outages. Also, they are used to run RVs or power tailgates, job sites, and campgrounds. But which of the generator is best to use, or which fuel is the best option to go with?

The best option is to go for a portable gas generator as gasoline is the most inexpensive and readily available fuel. It is not the best when we talk about giving extended runtime, but you can still get a decent runtime when running a gasoline generator.

So, here we are going to review the best gas generators available in the market to help you in finding the right unit according to your needs.

Westinghouse iGen2200 Portable Generator Review

Westinghouse WGen9500DF Portable Generator Review

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Westinghouse power station with gas fuel tank

Westinghouse WGen7500 Portable Generator

  • 6.6-gallon gas tank

  • 16 hrs runtime at 25% load

  • 3 years warranty

Westinghouse light weight power station with 6.6 gallons fuel tank

Westinghouse WGen5500 Portable Generator

  • 6.6 gallons fuel tank

  • 20 hours at 25% load

  • 420cc OHV engine

DuroStar power station with 208cc engine

DuroStar DS4000S Portable Generator

  • 208cc OHV 4-stroke engine

  • 3 years warranty

  • 12-hour runtime at 50% load

Champion portable gas generator with 208cc engine

Champion Power Equipment 100554 Generator

  • 208cc 4-stroke engine

  • 4.7-gallon gas tank

  • 12 hrs at 50% load

Champion light weight generator with dual start system

Champion 3500-watt Portable Generator

  • 3.8 gallons fuel capacity

  • dual start system

  • 196cc OHV engine

Briggs & Stratton lightweight portable power station

Briggs and Stratton 30651 P2200 Generator

  • 111cc OHV engine

  • 1-gallon gas tank

  • 55 pounds weight

Generac with 992cc engine

Generac 5735 GP17500E Generator

  • 992cc OHVI engine

  • Electric/recoil start system

  • 16 gallons fuel tank

Pulsar lightweight power station with long run time

Pulsar 1200-watt Portable Generator

  • 72cc engine

  • 1.1 gallons fuel tank

  • 5 hours runtime at 50% load

WEN lightweight power station

WEN 56180 1800-watt Portable Generator

  • 1.1-gallon gas tank

  • 7.5 hours at half load

  • 98cc OHV engine

1. Westinghouse WGen7500 Gas Powered Portable Generator – Best Conventional Gas Generator

  • Engine: 420cc OHV
  • Output: 9500-7500 watts
  • Warranty: 3 years

More Features: It comes with a triple start system: recoil, electric and remote start.

Westinghouse WGen hurricane generator

Starting and Running Watts: If you are looking for the best gas-powered conventional generator, then you must select this Westinghouse WGen7500. It is capable of generating 9500 starting watts and 7500 running watts.

Start System: You can start your generator in three ways. First, there is a manual start system.  Second, you have a push-button electric start system. And third, a remote start system.

Tank Capacity and Runtime: With a 6.6-gallon gas tank, you will be able to power your appliances and electronics up to 16 hours at quarter load.

Power Outlets: Its power outlets include four GFCI protected 120V 20A household outlets and one 120/240V 30A twist-lock outlet. All these power outlets are covered for protection.

GFCI (Ground Fault Circuit Interrupter) outlets are basically for the protection of the people to shield them from electric shocks.

The twist-lock outlet can be used to tie the generator into your house through a transfer switch.

Engine: WGen7500 generator is powered by a 420cc Westinghouse 4-stroke OHV engine with cast iron sleeve for added protection.

Weight and Certifications: The weight of this generator is 201 pounds, and it is EPA (Environmental Protection Agency), and CSA (Canada Standard Association) certified.

Warranty: Westinghouse WGen7500 features a 3-year limited warranty.

Noise Level:73 dB (A) is its operational sound. 

Other Features: Fuel gauge, digital hour meter, low-oil shutdown sensor, and battery indicator are included in other features.

Fuel gauge helps you to keep an eye on the fuel levels; digital hour meter shows Volts, Frequency, and Runtime; low-oil shutdown sensor turns off the engine when the oil level goes down, and the battery indicator shows the battery power. 

My Opinion:

Pros: Westinghouse WGen7500 produces effective starting and running watts and gives a reasonable runtime. It is featured with all the three start mechanisms along with a digital hour meter and circuit-protected outlets. 

Cons: Its commercial warranty is only for one year.

2. Westinghouse WGen5500 Gas Powered Portable Generator – Gas Generator under $750

Westinghouse WGen500 gas generator

Starting and Running Watts: Another conventional generator from Westinghouse is on our list. It can generate 6850 watts of peak power and 5500 watts of rated power.

Start System: You can only start the generator manually.

Tank Capacity and Runtime: It has the same fuel tank capacity of 6.6 gallons as the Westinghouse WGen7500, but it can give better runtime up to 20 hours at quarter load.

Noise Level: WGen5500 is a noisy generator with a decibel rating of 72 dB (A).

Power Outlets: We have four 120V 20A household outlets that are GFCI protected. Also, the same transfer switch ready 120/240V outlet is there.

Engine: The same powerful 420cc Westinghouse 4-stroke OHV engine is the part of this generator.

Weight and Certifications: WGen5500 is an EPA and CARB certified unit that weighs 170 pounds. CARB stands for California Air Resources Board that allows you to ship and use your generator in California.

Warranty: If we focus on its warranty period, then it is for three years.

Other Features: Overload protection, automatic low-oil shutoff sensor, and data center (same like the digital hour meter)

My Opinion:

Pros: Westinghouse WGen5500is easy to use and assemble. It is highly fuel-efficient, CARB compliant, and easy to maintain as well. Also, it features a data center and GFCI-protected outlets. 

Cons: It only has a recoil start mechanism.

3. DuroStar DS4000S Gas Powered Portable Generator – Best Gas Generator for Camping

DuroStar gas generator

Weight and Certifications: DuroStar DS4000S weighs 94 pounds and meets the EPA and CARB set standards.

Warranty: It offers a 3-year limited warranty.

Engine: DuroStar 208cc OHV 4-stroke single-cylinder engine is there with a cast iron sleeve and air-cooled cooling mechanism.

Starting and Running Watts: With 4000 peak watts and 3300 rated watts, it can handle multiple jobs at the same time. 

Start System: Put some effort to start your generator manually.

Tank Capacity and Runtime: A 3.96-gallon gas tank can give up to a 12-hour runtime at half load.

Power Outlets: There are one 120V 30A twist-lock outlet and two 120V 20A GFCI-protected household outlets.

Noise Level: Its operational sound is 69 dB (a), thanks to the super quiet muffler. 

Other Features: Low-oil shutdown sensor, optional wheel kit, fuel gauge, and voltmeter

My Opinion:

Pros: DuroStar DS4000Sis an RV-ready generator that gives a good runtime. It operates without making much noise, features a built-in spark arrestor, and it is also perfect for residential use. 

Cons: No wheels are included in the package.

4. Champion Power Equipment 100554 Gas Powered Portable Generator – Best Gas Generator for RV

Champion 100554 gas generator

Start System: Champion Power Equipment 10054 is featured with wireless remote, electric, and recoil start systems. From up to 80 feet away, you can turn your generator on and off.

A battery is included for the electric start system. Also, the cold start technology makes the engine starts trouble-free in winters.

Engine: A reliable 208cc 4-stroke Champion engine generates enough output power to meet your daily RV and home needs.

Starting and Running Watts: It can produce 4375 watts of peak power and 3500 watts of rated power.

Tank Capacity and Runtime: This model of Champion Power Equipment can run up to 12 hours at half load on a 4.7-gallon gas tank.

Power Outlets: Two 120V 20A outlets, one 120V 30A twist-lock outlet, and one 120V 30A RV-ready outlet. All these power outlets are rubber covered.

Weight and Certifications: The weight of this machine is 145 pounds, and it is EPA and CARB certified.

Warranty: It includes free lifetime technical support and a three-year warranty.

Noise Level: From 23 feet away, it generates a 68 dB (A) noise level.

Other Features: Other features of this generator include a Volt guard, intelligauge, and a low-oil shutdown sensor.

Volt guard protects your appliances and equipment from power surges.

My Opinion:

Pros: Champion Power Equipment 100554is a great and reliable product that features an RV-ready outlet. It is easy to assemble, well-documented and operates with less noise. Also, it offers great technical support.

Cons: Its remote start system sometimes fails to work.

5. Champion 3500-watt Gas Powered Portable Generator – Gas Generator under $500

Champion 3500-watt gas generator

Starting and Running Watts: This Champion 46539 is also an RV ready unit that generates 4000 starting watts and 3500 running watts.

Start System: You can either start your generator manually, remotely or with an electric start system.

Tank Capacity and Runtime: Its fuel tank size is 3.8 gallons that can give 12 hours of runtime at a half load that makes this generator more fuel-efficient than the Champion 100554.

Power Outlets: It has the same number of power outlets as the Champion generator mentioned above; two 120V 20A outlets, one 30A twist-lock outlet, and one 30A RV-ready outlet.

Engine: Champion 46539 is powered by a 196cc Champion single-cylinder OHV engine.

Weight and Certifications:140 pounds is the weight of this generator, and it is EPA certified and CARB compliant.

Warranty:3-year limited warranty with free lifetime technical support.

Noise Level: The operational sound of this unit is 68 dB (A) from 23 feet.

Other Features: We have a Volt guard along with an intelligauge and low-oil shutdown sensor. 

My Opinion:

Pros: Champion 46539 works as it is advertised. It is easy to use and maintain, operates with less noise, offers a respectable runtime, and features CARB and EPA certifications.

Cons: Sometimes, its remote fails to work from long distances.

6. Briggs and Stratton 30651 P2200 Gas Powered Inverter Generator – Best Gas Inverter Generator

Briggs & Stratton P2200 gas generator

Engine: This inverter generator from Briggs and Stratton comes with a 111cc OHV engine that is highly fuel-efficient.

Starting and Running Watts: It produces 2200 peak watts and 1700 rated watts.

THD Rating: With less than 3% THD (Total Harmonic Distortion) rating, it is quite safe to power delicate electronic items like TV, laptop, smartphone, and tablet.

Start System: Briggs and Stratton P2200 generator starts manually.

Tank Capacity and Runtime: It has a 1-gallon gas tank that can give a runtime up to 8 hours at quarter load.

Noise Level: The Quiet Power Technology not only keeps the noise level on the lower side, but it also saves fuel and gives longer runtime. It helps the generator to operate at 59 dB (A) at quarter load.

Power Outlets: There is a 12V DC outlet with a USB adapter along with two 120V 20A household outlets.

Parallel Capability: P2200 is also parallel capable that allows you to connect another PowerSmart Series inverter to double to output power. Use the dedicated connector port to get the job done.

Weight and Certifications: You cannot ship this generator to California because it is not CARB compliant. And if we talk about its weight, then it is only 55 pounds. 

Warranty: One-year commercial warranty and two-year consumer warranty.

Other Features: Low-oil, output ready, and overload indicators.

My Opinion:

Pros: P2200 inverter generator is fuel-efficient as well as quiet. It produces clean power, offers up to 8 hours of continuous operation, and features a convenient H-handle.

Cons: It charges the battery slowly.

7. Generac 5735 GP17500E Gas Powered Portable Generator – Expensive Gas Generator

Generac 5735 gas generators

Starting and Running Watts: This Generac GP17500E is the most powerful gas generator in the list that can generate 26250 watts of peak power and 17500 watts of rated power.

Engine: It is featured with a powerful Generac 992cc OHVI engine.

Start System: You have both the electric and recoil start mechanisms.

Tank Capacity and Runtime: A huge fuel tank of 16 gallons can give a runtime of up to 10 hours.

Noise Level: The idle control feature not only keeps the noise level low but also saves fuel.

Power Outlets: Its control panel has a variety of power outlets. We have two GFCI-protected 120V 20A outlets and two 120V 20A outlets without GFCI protection. Also, there are two 120V 30A twist-lock outlets, one 120/240V 30A twist-lock outlet, one 120/240V 50A outlet, and one 12V DC outlet.

Weight and Certifications: It is not CARB, and CSA certified and weighs 390 pounds.

Warranty: Generac GP17500E offers 2 –year limited residential warranty and 1-year limited commercial warranty.

Other Features: There is a fuel shutoff valve that turns off the fuel supply and allows the generator to run without fuel to prevent stale gas issues. Also, we have a low-oil shutdown feature, automatic voltage regulation feature, and an hour meter.

My Opinion:

Pros: Generac GP17500E is powered by a 992cc engine with a huge capacity fuel tank. It features a variety of power outlets and a fuel shutoff valve.

Cons: It is not CARB certified. Also, it is not fuel-efficient.

8. Pulsar 1200-watt Gas Powered Portable Generator – Best Gas Generator for the Money

Pulsar 1200W gas generator

Noise Level: Pulsar PG1202S is a compact generator that operates at 65 dB (A).

Engine: It is featured with a reliable 72cc, 2-stroke single-cylinder engine.

Starting and Running Watts: You will get 1200 watts of starting power and 900 watts of continuous power. 

Start System: Start your generator manually with ease.

Power Outlets: There are two 120V AC outlets and one 12V DC outlet. 

Tank Capacity and Runtime: Run your generator up to 5 hours at half load on a 1.1-gallon gas tank.

Weight and Certifications: It weighs 37.5 pounds, and it is an EPA and CARB approved unit.

Warranty: Its warranty period is only for one year.

Other Features: Overload protection and a noise-reducing muffler

My Opinion:

Pros: Pulsar PG1202S is lighter and smaller than other Pulsar generators. It is very inexpensive, simple to operate, and EPA and CARB certified.

Cons: There is no low-oil shutoff feature. Also, it is not an inverter generator.

9. WEN 56180 1800-watt Gas Powered Portable Generator – Gas Generator under $400

WEN 56180 gas powered generator

Weight and Certifications: The last generator in our list is the WEN 56180 that is EPAIII and CARB compliant and weighs 50 pounds.

Starting and Running Watts: It can produce 1800 starting watts and 1500 continuous watts.

Start System: Recoil start system

Tank Capacity and Runtime: A 1.1-gallon gas tank can power your appliances up to 7.5 hours at half load.

Power Outlets: Its control panel is featured with two 120V AC household outlets and one 12V DC outlet.

Engine: WEN 56180 comes with a 98cc 4-stroke OHV engine featuring an air-cooling system.

Warranty: It offers a 2-year limited warranty.

Noise Level: The sound rating of this generator is 63 dB (A).

Other Features: Spark arrestor and low-oil shutdown are the other features where the spark arrestor allows you to use your unit in parks, and low-oil shutdown turns off the engine due to lower oil levels.

My Opinion:

Pros: WEN 56180 is extremely lightweight, convenient in carrying, and offers long runtime. 

Cons: It is not a durable unit. Also, it only starts manually.

Buyer’s Guide

When selecting the best gas generator for home, RV, or camping; consider these below mentioned factors.

Conventional vs. Inverter Generator

It depends on your power needs and choice. If you need a compact portable generator for your camping trips or tailgate parties, then an inverter generator is the best fit. On the other hand, for home backup power and RV use, conventional generators are recommended.

Inverters produce clean power. They are parallel capable, compact, portable, and fuel-efficient. But they are expensive as well and cannot give higher output power with a single unit.

Conventional generators can produce higher output power and are less expensive, but most of them don’t produce clean power. Also, most of them are noisy.

Amount of Power

How much power you need depends on your purpose of buying the generator. If you want to run your whole house, then a power generator is a must. If you need to run your RV, a mid-power generator of 4000 watts is enough. Or if you need to power your camps or tailgates, then a small portable generator with 2000 watts power is sufficient.

Tank Size and Runtime

Fuel efficient generators give good runtime with small-sized fuel tanks. So, if your generator is small but fuel-efficient, then you can get extended runtime.

Generators with higher output power need big size fuel tanks to give a decent runtime, so you cannot ignore the importance of having big size fuel tanks.

But one thing you should keep in mind that the more powerful your generator is, the more it will consume fuel to keep your life running. Also, the runtime depends on the type of fuel you are using.

Start System

Your generator must have an electric start system to start your generator without any effort. But if your selected generator is only featured with recoil start then make sure the rope is easy to pull.

Some generators also come with cold start technology that ensures easy starts in cold weather. Also, the remote start system is the most useful option that becomes mandatory for RV generators.

Operational Sound

Always try to buy a generator with low operational sound. It will not only keep you relaxed and allow you to have a good night’s sleep but will also keep your neighbors free from stress.

Most of the inverter generators are quiet so you can go for inverters, but if you need a conventional generator, then try to get a unit with less than 70 dB (A) decibel rating.

Also, you can keep your generator away from you if it is noisy to protect your ears from listening to the disturbing sound of the generator.

Power Outlets

The number and type of power outlets available in your selected generator must be according to your needs. If you need more power outlets to run your household appliances, then make sure your unit has two or four 120V 20A household outlets. If you need to power your RV, then a twist-lock or an RV-ready outlet is a must. Also, USB ports are best to have to power small items, and a 12V DC outlet can be used for battery charging.

Safety Features

Low-oil shutdown sensors and overload protection are the two common safety features.

Some generators come with a fuel shutoff valve to prevent stale gas related issues. Also, a spark arrestor is a must if you are buying a generator for camping or tailgate parties.


How to store fresh gas in your gas-powered generator?

To keep gasoline fresh in your generator, it is necessary to add a fuel stabilizer in the gas tank. This fuel stabilizer will keep the gas away from gumming up. It can keep your fuel fresh up to a year or so.

Also, it is recommended to utilize the fuel shutoff valve if available to run the generator without gasoline supply to prevent stale gas related issues. The old gas will be used to run the generator, and this will help you in adding fresh gas without any hesitation.

How much gasoline should I store during a power outage?

It is always necessary and beneficial to have extra gasoline in your hands during a power outage.

For example: If you have a generator with a 5-gallon gas tank, then you need an extra 25 to 30 gallons to keep your life running for days.

How to keep a small gasoline-powered generator to live longer?

Regular maintenance and care can help you to keep your small gas generator in a working condition for long.

  • Check the oil on a regular basis
  • Keep your generator covered when not in use
  • Do regular service
  • Do inspect the battery and connections
  • Avoid overloading
  • Before adding gasoline, run your generator without fuel to prevent stale gas issues


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