PowerProtect™ DX 20kW Standby Generator

The 20kW¹ DX generator is there when you need it most, providing more power on both natural gas and liquid propane than any other generator in its class. The workhorse of the PowerProtectDX lineup, the 20kW unit is backed by the most comprehensive warranty over time with a 10-Year limited warranty.

Click here to view spec sheet.

Available Models: 040657

Features

Highest-Rated Power Output in its Class

Get more bang for your buck with the most powerful natural gas unit in its class.²

Best-In-Class Warranty

10-Year limited warranty³ of parts, labor, and travel, included for the entire term. The industry’s most comprehensive warranty over time is standard to give you piece of mind that you have the coverage you need.

Quiet Weekly Test Mode

Over 65% quieter during weekly test mode, for less disruption to you and your neighbors.⁴

Multiple Fuel Options

Optimized for both natural gas and liquid propane fuels, the PPDX20 can provide reliable backup power to your home regardless of your available fuel options.

Commercial-Grade Vanguard^® Power

Rugged, reliable engines trusted for the most demanding commercial applications, so you always get the power you need.

Easy Installation & Serviceability

Approved for installation as close as 18" to a building for flexibility of placement around the home - simple toolless panel removal also allows for easy serviceability and maintenance.⁵

Assembled & Engineered in USA

Briggs & Stratton generators are designed and assembled in the USA.⁶

Power Management System (Optional)

Customizable to your home's power needs, Symphony^® II and Amplify^™ Power Management systems offer prioritized whole house power giving flexibility to a more affordable standby generator solution.
Learn more.

Corrosion Resistant Enclosure & Base

Automotive-grade galvanneal steel base and aluminum enclosure to resist rust, and powder-coated paint for years of protection against chips and abrasions.

Superior Customer Support

When you need support, we've got your back with a nationwide call center and dealer network. Our best-in-class customer service team is always prepared to assist with any questions you may have.

¹This generator is listed in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and CSA (Canadian Standards Association) standard C22.2 No.100-14 (motors and generators).
²On natural gas in its named class
³See operator’s manual or briggsandstratton.com for complete warranty details.
⁴Compared to full load based on lowest microphone at 7 meters
⁵The installation manual contains specific instructions related to generator placement in addition to NFPA 37, including the requirement that carbon monoxide detectors be installed and maintained in your home or business.
⁶Of U.S. and global parts

Specifications

Model Number

040657

Running Watts (Liquid Propane) kW**

Running Watts (Natural Gas) kW**

Running Amperage (Liquid Propane) Amps**

83.3

Running Amperage (Natural Gas) Amps**

83.3

Voltage

120 / 240

Circuit Breaker Amps

100

Engine Brand

Vanguard^®

Engine Displacement (cc)

993

Motor Starting Capability (kVA)

41 (35% Voltage Dip)

Assembled Length (in.)

46.5

Assembled Width (in.)

26.8

Assembled Height (in.)

28.4

Assembled Weight (lbs.)

520

Normal Operating Sound

68 dBA

Fuel Consumption (Liquid Propane) (50% Load, BTU/hr)***

208,000

Fuel Consumption (Natural Gas) (50% Load, BTU/hr)***

187,000

Limited Warranty (Years)†

**This generator is rated in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and CSA (Canadian Standards Association) standard C22.2 No.100-14 (motors and generators).
***Fuel consumption rates are estimated based on normal operating conditions. Generator operation may be greatly affected by elevation and the cycling operation of multiple electrical appliances - fuel flow rates may vary depending on these factors.
†See operator’s manual or briggsandstratton.com for complete warranty details.

Reviews

Support

Transfer Switches

View our full lineup of automatic transfer switches, that pair with your standby generator to provide seamless backup power to your home in the event of an outage.

Financing

Backup power is one of the smartest investments you can make in your home. Learn about how you can purchase a generator with easy financing options*.

*Subject to credit approval, minimum monthly payments required, see dealer for details

Accessories

Whether you want real-time remote monitoring, cold weather protection, or prioritized power management, our optional accessories can help you create a backup power system that's customized to your home's needs.