Firman WT05571

Inverter Generators / 5,000-Plus Watts, 220-Volt-Capable

This Firman 5,000-Plus Watts, 220-Volt-Capable generator is gasoline/propane/natural gas-powered and is rated for Gasoline 5500/Propane 5000/Natural Gas 4500 watts. It has:

electric start
fuel shutoff
low-oil shutoff
5 power outlets

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CR Expert Take

How did it perform in our expert lab testing?

Overall Score

The Overall Score for this model is derived from our expert lab test results.

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Current Range of Tested Inverter Generators

What goes into the Overall Score?

Power delivery

/ 5

Power quality

/ 5

Noise

/ 5

Ease of use

/ 5

CO safety technology

/ 5

Run time range (hrs.)

/ 5

Detailed Test Results

POWER DELIVERY: Delivered more than enough wattage to power our test appliances and handled surges very well. POWER QUALITY: Provided especially clean power with consistently high voltage. NOISE: Neither quiet nor noisy from a distance of 23 feet, though still may be noticeable when run overnight. EASE OF USE: Very easy to start and (for portables) transport, with many helpful features such as fuel shutoff, fuel gauge, and low-oil shutoff.

About

The Firman WT05571 is part of the Generators test program at Consumer Reports. In our lab tests, Inverter Generators models like the WT05571 are rated on multiple criteria, such as those listed below.

Power delivery: A high score means the generator delivers steady power and handles larger surges in demand. A top-scoring model manages spikes from appliances like air conditioners without trouble.

Power quality: A high score means the generator delivers smooth, consistent voltage. A top-scoring model helps prevent brownouts and keeps sensitive electronics running reliably.

Noise: A high score means the generator runs more quietly. Top-scoring models minimize noise, making them less likely to disturb your neighbors.

Features & Specs

Specs

Claimed output (watts)

Gasoline 5500/Propane 5000/Natural Gas 4500

Voltage Capability

120/240V

Fuel type

Gasoline/Propane/Natural Gas

Fuel capacity (gal)

Gasoline Used Per Day (gal)

16-25

Fuel gauge

Yes

Weight (lbs.)

168

Wheels

Included

Electric start

Yes, Battery Included

Fuel shutoff

Yes

Low-oil shutoff

Yes, With Indicator Light

No. of power outlets

Hour meter

Yes

Price & Shop

Firman WT05571

CR Expert Take

Overall Score

What goes into the Overall Score?

Detailed Test Results

About

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