GE 20,000-Watt Home Generator System with Symphony II Whole House 200-Amp Automatic Transfer Switch-040381 at The Home Depot
Free shipping


Model # 040381

20,000-Watt Home Generator System with Symphony II Whole House 200-Amp Automatic Transfer Switch

GE 20,000-Watt Home Generator System with Symphony II Whole House 200-Amp Automatic Transfer Switch

This item has been discontinued.
The Home Depot no longer carries this specific product.

$4,599.00 / each
Item cannot be shipped to the following state(s): AK,CA,GU,HI,PR,VI


Model # 040381

Internet # 203603826

Store SKU # 1000030431

Store SO SKU # 1000033229

Our GE 20kw standby generator is our smartest generator ever. Featuring ground-breaking power management technology advanced safeguarding features that meet rigorous industry fire protection standards and a unique air flow design that make this our quietest generator yet. There has never been a better time to protect your family.

  • Comprehensive parts and labor, 5-year limited warranty - the longest, most comprehensive warranty in the industry, so you can be assured of our commitment to quality and to your pocketbook
  • Thoroughly tested against rigorous National Fire Protection Agency standards, this is the only 20kW standby generator with an all-steel enclosure and all-steel base, so it can withstand temperatures more than double that of aluminum and far beyond that of plastic
  • With an external, automatic gas shut-off valve, low pressure regulator and an internal thermal protection system found on any 20kw standby generator in the industry, we've raised the bar on protecting your home and family
  • Proven to deliver non-stop reliability, our 20kw standby generators are powered by premium-grade Vanguard engines that are developed for tough commercial applications
  • Includes a wireless monitor for inside your home, so you know your standby generator is working without having to go outside
  • Featuring unique air-flow technology, our 20kw standby generator is our quietest generator yet, and because it is 50% quieter than many portable generators, this is the best choice to keep your neighbors happy
  • Our enclosures are made from the same rust-resistant, durable galvanneal steel and paint process that is used in the automotive industry, resulting in years of protection against chipping and abrasions
  • Our electronic governor provides stable, consistent power for sensitive electronics and today's most advanced appliances
  • The patented Symphony II power controls provide a managed power solution that gives you access to every powered item in your home, just not at the same time. By using power management modules, appliances are prioritized and turn on/off based on need and the electrical load placed on your generator
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Assembled Depth (in.)  34 in  Assembled Height (in.)  31 in 
Assembled Width (in.)  48 in  CA (CARB) Compliant  Not CARB Compliant 
Certifications and Listings  1-UL Listed,CSA Listed  Color Family  Gray 
Commercial / Residential  Residential  Continuous Wattage  20000 
ENERGY STAR Certified  No  Engine Displacement (cc)  993 
Engine Make  OEM Branded  Engine manufacturer  Briggs & Stratton 
Height (in.)  31  Hour Meter  Yes 
Low oil shutdown  Yes  Manufacturer Warranty  5 Year Limited Parts and Labor Warranty 
Operational volume (dB)  69.1  Product Height (in.)  31 
Product Length (in.)  48  Product Weight (lb.)  500 lb 
Product Width (in.)  34  Remote Monitoring  Included 
Response time (sec.)  20  Returnable  Non-Returnable 
Width  34.00 



Most orders process within 3 business days.

Please allow 2-6 business days for Curbside Truck Shipping (By Appointment) in the Continental U.S., plus order processing time.  Deliveries are made to receiving area/dock for Businesses or curbside for Residential orders. The carrier will contact you to make a delivery appointment with a 4 hour window once the items have arrived at the local hub in your area.  Delivery appointments are required.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.