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Briggs & Stratton 40336 - 20kW Home Standby Generator for sale.

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Briggs & Stratton 20kW Home Standby Generator

Briggs & Stratton Power Equipment and Accessories
Model: 40336
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
3 Reviews
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In-Stock Only 2 In-Stock
Ships Tuesday, Aug 22nd

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  • Features
  • Specs
  • Q&A 
  • 3
  • Articles
  • Shipping
  • Accessories
Run Watts
Rated Watts
Surge Watts
Starting Watts
20 kW Standby Generator (Requires Auto Transfer Switch)
Automatically starts when utility power is lost

993cc Briggs & Stratton V-Twin Commercial Grade Vanguard Engine
Provides years of long lasting, reliable standby power

Galvanneal Steel Enclosure
Automotive rust proofing paint process reduces corrosion

Front Air Ventilation
Pushes engine exhaust out the front, away from the home

Computer Friendly :)
Safe for use with advanced electronics and computers

Flexible Placement (Please Verify Local Building Codes)
Tested against tough National Fire Protection Agency standards
Can be placed as close as 18 from structure

Patented Central Air Technology (When Used w/ ACCM-II ATS)
Manages demands of up to two 5-ton central air conditioners

Turnkey Extras
Automatic Battery Charger
Hour Meter

Industry Leading 5-Year Parts, Labor & Travel Warranty
Engine Brand
Briggs and Stratton Vanguard
993 CC
Consumer Engine Warranty
5 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Product Specs
120/240 Single-Phase
60 Hertz
Surge Watts
20000 Watts
Rated Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
187 (BTU: 187,000 BTU/HR) ft³/hr
NG Fuel Consumption @ 100% Load
260 (BTU: 260,000 BTU/HR) ft³/hr
LP Fuel Consumption @ 50% Load
2.3 (BTU: 208,725 BTU/HR) gallons/hr
LP Fuel Consumption @ 100% Load
3.75 (BTU: 340,313 BTU/HR) gallons/hr
Rated Amps
83 @ 240 Volts (Single Phase) Amps
Decibel Rating @ 7m
68.4 dbA
Transfer Switch
Automatic (Not Included)
Not Included (540 CCA)
A/C Ton Rating
2 x 5-Tons
Mounting Pad
Steel (Included)
Cooling System
Air Cooled
UL Listed
Grade Type
Made in USA
484 Pounds
Product Length
50.5 Inches
Product Width
32.9 Inches
Product Height
31 Inches
Consumer Warranty
5 Years
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Briggs & Stratton 40336 Reviews & Ratings
Overall Rating
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
Price (2)
Reliable (2)
Exceeded Expectations (1)
Quiet (1)
High Quality (1)
None (1)
100% of respondents would recommend this product to a friend
3 Reviews  Sort by 
Anthony P.
Copiague, NY
Purchased from Power Equipment Direct
Purchased 7/22/13
Total Helpful Votes
10 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Replacement Generator
The original Briggs and Stratton 15KW Generator was destroyed during super storm Sandy when it came time to replace the unit it was without question (based on previous unit) to choose Briggs and Stratton. I searched the web and found Electric Generator Direct to have the best price and FREE shipping with no TAX. The service that I received was better than when I bought the original from Sears. I am very pleased with the product. (but I hope never have to try it) Thank You
Pros: Price, Reliable, High Quality, I'd Buy It Again
Cons: None
Anthony Recommends This Briggs & Stratton Product
Was this review helpful?
Charles & Joyce H.
Milam, TX
Purchased from Power Equipment Direct
Purchased 6/9/16
Total Reviews
2 Reviews
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Generator
We live in a very rural part of Texas which is subject to frequent power outages. In the summer of 2008, we installed a 15KW G.E. (made by B & S) with auto transfer switch. It was struck by lightning on May 27, 2016 while in service. It was a very good generator and had 481 hours of faithful service on it. Because of the reliable service we obtained from that generator, we decided to replace it with a 20KW Briggs and Stratton.

This new unit was easy to install and ready for use right... more
Pros: Quiet, Price, Exceeded Expectations, Reliable
Charles Recommends This Briggs & Stratton Product
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Martin W.
Princess Anne, MD
Purchased from Power Equipment Direct
Purchased 8/19/15
5 out of 55 out of 55 out of 55 out of 55 out of 5
Smooth Transaction
My biggest worry was delivery, but the truck driver was nice and courteous, plus helpful with lowering the gate to my 5x9 trailer, so I could easily cart it near it's resting place. Both electrical and gas installers liked the easy connections, however the electrical inlet hole in the back, wasn't sufficient, but the installer was easily able to correct.

Having the transfer switch installed while building our home, helped make the connection simple. Having access to four strong backs for... more
Martin Recommends This Briggs & Stratton Product
Was this review helpful?
Free Freight
  • Ships via Semi-Truck
  • Requires a loading dock or forklift
  • Free to Lower 48 States
We currently CANNOT ship this product to Alaska, Hawaii or any destination outside of the United States
Priority Shipment
  • Faster Delivery Times
  • Ships Same Business Day
  • Guaranteed In-Stock
  • $50 Service Charge
Lift Gate Services
  • Safely Lowers Products Off the Truck
  • Requires Special Hydraulic Lift
  • Free Lift Gate
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Buy Briggs & Stratton 20kW Home Standby Generator at Power Equipment Direct. Read reviews and articles. Wide Selection of accessories available, including Briggs & Stratton 15 - 20 kw Standby Generator Maintenance Kit, Briggs & Stratton 3" Concrete Mounting Pad for 16-20kW Generators and Briggs & Stratton Air-Cooled Standby Generator Cold Weather Kit (16 & 20kW).

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