Backup power explained for everyday use.
Backup power for your essentials

A-iPower GXS5000

Gasoline · 4,000 running watts on gas

A-iPower GXS5000
Documented portable power · Generator review

A-iPower GXS5000 ReviewProduct name on AmazonA-iPower 5000-Watt Portable Generator Gas Powered, CO Sensor Shutdown, Heavy Duty Generators with 223cc OHV Engine for Jobsite, RV, Home Backup, Emergency (GXS5000)

The GXS5000 pairs a large 6.3-gallon tank with a claim of up to 20 hours at quarter power. That means about 1,000 watts of use, not the full 4,000 running watts. Higher demand means more frequent refueling.

A-iPower GXS5000
The key numbers

At a Glance

4,000Running watts · gas
5,000Starting watts · gas
120VGasolineConventional
Gasoline4,000 running watts

Manufacturer ratings. Starting watts cover a brief burst, such as a refrigerator turning on.

Check Price on Amazon

Current price and availability are shown on Amazon.

How much power does the A-iPower GXS5000 give you?

On gas, this model is rated for 4,000 running watts and 5,000 starting watts. Running watts are the power available while your appliances are on. Starting watts are a short burst to help things like refrigerators and pumps turn on. You cannot use that bigger number for appliances that need steady power.

FuelRunning wattsStarting watts
Gasoline4,000 W5,000 W

Is this model a good fit for you?

The 6.3-gallon tank and wheels come with a weight of 111.6 pounds without fuel. Its twenty-hour claim is at quarter power, around 1,000 watts, rather than its full 4,000-watt running output.

Both its L5-30R and TT-30R outlets are 120V. It cannot power a 240V appliance. This is a conventional generator with a voltage regulator, and its manual lists power distortion below 23%. Despite wording in the product title, it starts with a pull cord.

Starting watts vs. running watts, explained →

The details for this model

Model: GXS5000. Manufacturer part number: GXS5000. These are published specifications, not results from our own testing. If a detail is missing, we leave it marked rather than use a number from a similar generator.

A detail to confirm: The official page title contains “Petrol Electric Generator,” but the actual specification table and matching manual both say pull-cord start; do not promise electric starting. Oil capacity differs slightly between official page and manual; follow the exact supplied manual rather than adding a generic fill quantity. Noise conditions are incomplete.

How it starts
Pull cord
Voltage
120V
Gas tank
6.3 US gal. (manual rounds metric capacity to 24 L)
How long it runs
Up to 20 hours at 25% gasoline power use
Weight
111.6 lb. net
Size (L × W × H)
24.4 × 19.7 × 22.0 in.
Outlets
120V 20A 5-20R household outlets; 120V 30A L5-30R; 120V 30A TT-30R
Generator type
Conventional
Power smoothness (THD; lower is generally smoother)
Below 23% in matching manual; conventional brushed alternator with AVR
Carbon monoxide shutdown
CO WATCH-GUARD automatic shutdown; low-oil shutdown
Noise
68 dB claimed on official page; measurement distance and load not stated
Warranty
3-year limited residential / 1-year commercial and rental, subject to policy

A 120V outlet powers ordinary household plug-in devices. Some pumps and larger equipment need 240V. Inverter models use electronics to control the electricity they supply. THD measures how smooth that electricity is; a lower number generally means smoother power. Check your device instructions before connecting electronics.

Sources: A-iPower GXS5000 official specifications · Matching manufacturer owner manual · Exact Amazon listing and variant identification ↗ ·

How long will it run?

The published runtime is Up to 20 hours at 25% gasoline power use. The listed gas tank holds 6.3 US gal. (manual rounds metric capacity to 24 L). The more power you use, the sooner you will need fuel. A runtime measured at 25% load means the generator was only supplying a quarter of its running power, not working flat out.

Keep approved gas containers, rotate stored fuel, and plan where you can refill them. A bigger wattage number will not help if you run out of fuel. Read our fuel-storage guide →

What can you run during an outage?

Start by listing the appliances you need most. Check both their running watts and the extra power they need to start. A refrigerator, for example, may need much more power for a moment when its compressor kicks on.

Here is an example, not a test of this generator: a refrigerator using 600 running watts, plus 100 watts of lights and 100 watts for a router and other small devices, adds up to 800 watts. If that refrigerator needs 1,800 watts to start, the total briefly reaches 2,000 watts. Your appliances may use different amounts.

That example is within the listed gasoline running and starting ratings. You still need to check your own refrigerator, each outlet’s limit, and anything else that may turn on at the same time. If you use propane or natural gas, check those ratings separately.

A 1,500-watt heater uses a lot of power on its own. Follow its connection instructions; many portable heaters must plug directly into a suitable wall outlet. This review does not confirm 240V output for this model. Do not choose it for a 240V pump or air conditioner without checking that first. Work out how much power you need →

What we like and what to consider

Reasons to consider it

  • A gas-only setup with no fuel switching.
  • 4,000 running watts on gas.
  • 120V power for compatible appliances.

Things to keep in mind

  • It weighs 111.6 lb. net. Make sure you can move and store it.
  • No confirmed propane rating is available.
  • Noise figures depend on the distance and how hard the generator is working.

What owners are saying

The retailer page mixes feedback about the GXS5000 with at least one different model. We do not have enough clearly matched reviews to give a fair summary of owner experiences with this generator.

  • Customer reviews for GXS5000

Starting, moving, and maintenance

The listed starting options are: pull cord. Practice starting it before an outage so you know you can use it when needed. It weighs 111.6 lb. net. Wheels can help on level ground, but they do not make stairs or lifting into a vehicle easy.

The listed warranty is 3-year limited residential / 1-year commercial and rental, subject to policy. Read the full terms, including whether your seller and intended use are covered. Follow the manual for oil type, oil changes, and storage. Keep track of running hours during a long outage. See our maintenance guide →

Other generators to compare

WEN DF480iX →

The DF480iX gives you gas and propane, electric starting, wheels, and 4,000 running watts on gas. It is a 120V generator, unlike the 240V-capable DF680iX. It may suit appliance cords or an RV, but it cannot run a 240V well pump.

4,000 running watts on gas · Dual fuel · 120V

BILT HARD TGA-0258 →

This enclosed dual-fuel generator provides 4,000 running watts on gas or 3,600 on propane. It starts with a pull cord and weighs 61.73 pounds without fuel. The 5,500-watt number is starting power, not what it can keep supplying.

4,000 running watts on gas · Dual fuel · 120V

WEN DF475T →

The DF475T offers gas, propane, electric starting, and 120/240V output. It provides 3,800 running watts on gas. The larger 4,750-watt number is only for the brief extra power appliances need when starting.

3,800 running watts on gas · Dual fuel · 120/240V

Questions about the A-iPower GXS5000

How much running power does it provide?

4,000 watts on gasoline. Starting watts are only available briefly, not for steady use.

Is it an inverter generator?

No. It is a conventional generator. A voltage regulator does not make it an inverter. Its published power-distortion figure (THD) is Below 23% in matching manual; conventional brushed alternator with AVR. Check your electronics’ power requirements before connecting them.

Can I use it in a garage if it has CO shutdown?

No. Never run a generator in a garage, even with the door open. Use it outdoors at least 20 feet from homes and openings, with exhaust pointed away. Carbon monoxide shutdown is extra protection; it does not make indoor use safe.

Can I connect it to my house?

Check the voltage and outlets before planning a home connection. Have an electrician choose and install the right transfer equipment and check the generator’s wiring setup. Never connect a generator to a household wall outlet.

Our take

Should you consider the A-iPower GXS5000?

The GXS5000 pairs a large 6.3-gallon tank with a claim of up to 20 hours at quarter power. That means about 1,000 watts of use, not the full 4,000 running watts. Higher demand means more frequent refueling.

Check Price on Amazon

Where the information comes from

We use the sources below to compare specifications and features. We have not personally tested this generator.