Briggs & Stratton 40396 20000-Watt Home Standby Generator System with Dual 200 Amp/Split 400 Amp Automatic Transfer Switch
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- Reliable, commercial-grade Briggs & Stratton Vanguard engine handles the most demanding jobs
- Comprehensive 5-year parts AND labor limited warranty
- Rated for operation in areas with low natural gas pressure. This home generator can operate at 3.5'' to 7'' water column
- Compliancy with the NFPA 37 standard means it can be placed as close as 18" from your home for flexible placement options - perfect for tight lot lines
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From the manufacturer
Symphony II Power Managment
The Symphony II Power Management orchestrates high-demand appliances, such as your central air conditioner or an electric oven, with lower-demand items to give you true whole-house power with a smaller, more affordable generator.
Our customer-friendly limited warranty is one of the most comprehensive in the industry. Offering a 5 year parts, labor & travel limited warranty.
Don't Wake up the Neighborhood
Automotive-style exhaust system and sound dampening technology for quiet, neighbor-friendly operation. This unique airflow technology makes these models 50% quieter than most portable generators.
Perfect for Tight Lot Lines
Have a tight lot line? Worried about your curb appeal? Install your generator as close to as 18" from your home. Our generators are in compliance with the stringent National Fire Protection Agency 37 standard.
100 amp Transfer Switch
The 100 amp Symphony II Transfer Switch provides power to more of your household appliances. Featuring our patented Symphony II Power Management, the 100 amp automatic transfer switch manages the load of 1 or 2 air conditioners while keeping household appliances powered.
100 amp Transfer Switch
150 amp Transfer Switch
200 amp Transfer Switch
Dual amp Transfer Switch
Compare with similar items
Protect your home and family from power outages with briggs and stratton 20kw standby generator systems. perfect for large-sized homes, briggs and stratton provides reliable power and flexible options to meet your home's essential power needs. managed whole house power system powers your household appliances plus up to two air conditioners. automatically powers your home in seconds after sensing a power outage. our standby generators are powered by commercial-grade vanguard engines that are design-engineered to dependably take on the most demanding jobs. tested against tough national fire protection agency standards, our 20kw standby generators can be placed as close as 18" (where code allows) from the home providing more placement options in your yard, perfect for tight lot lines. rust-resistant, Galvanneal steel enclosures are made from the same materials and paint process used in the automotive industry, resulting in years of protection against chips/abrasions. we stand behind our .
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I had never purchased anything this big from Amazon before, and was a little unsure how the shipping would work out. When you place the order you are told the shipper will contact you to arrange delivery when someone is there. They never did contact me, so I had to make a couple of calls to get the final delivery scheduled. It did delay me getting it by a couple of days, but it gave me time to get a concrete base installed for it to set on, so it worked out fine. I do have to give kudos to Amazon, though because when I placed the order they stated a 2 week wait in shipping the unit. I got shipment notification the next day after I placed the order. Good job, Amazon!
The unit arrived packaged very well on a pallet and the shipper dropped it out of his truck using his hydraulic lift gate. If your delivery company doesn't have this capability, and you don't have a fork truck available, it would be impossible to get it delivered, especially since it weighs about 500 lbs.
To set the unit in place you have to unbolt it off the pallet and then move it to the chosen spot. Briggs has holes in the bottom of the unit that you can slip 1" pipe through and use this to lift the generator to move it. In my case, I inserted the pipes through the unit base and used slings, attaching them to a loader bucket on a tractor and used this arrangement to move it.
I did the installation of everything myself, but unless you're an electrician, which I am, I would recommend getting expert help. There are requirements in the electrical portion of the installation that only an electrician would understand. Also, I recommend you have a person with understanding of all gas company requirements do the piping installation. In my case I am using propane and had my LP supplier do the piping and tie in. One thing he commented on was he was impressed this unit came with a stainless steel flex connection, as other manufacturers supply a rubber flex, which his company is reluctant to connect to due to degradation over time.
One tip I will give is, after I completed installation the display was telling me I had an error with the Transfer Switch. I had also installed the optional remote monitor in this unit and it had the "service required" led flashing. After some troubleshooting I determined the issue was the two communication wires needed to be swapped at the transfer switch, as they need to be just opposite how they were connected in the generator, and this is not shown in the installation manual. Oddly, even before I found the source of the problem, the generator and transfer switch worked correctly and transferred to generator power when required.
Along with the Remote Monitor option, I also installed the Cold Weather Kit. This is needed if your temperature goes below 30 degrees. It warms the oil and the battery to allow extreme cold weather starting. One thing to keep in mind about the Cold Weather Kit is you have to drain the oil in order to install the oil heaters. You'll have to drain it into a clean container, as you need to put it back in the generator when the install is complete. The other issue with installing the oil heaters is it will go much better if you have a stubby ratcheting wrench for the oil heater on the back side of the engine, otherwise it takes a while due to constantly repositioning the wrench in a very tight spot.
I highly recommend this unit. Ironically, the night I finished the installation the power went off. We were eating dinner and the lights went out. It was so reassuring to hear the generator start and about 30 seconds later the transfer switched brought the generator on line. That made it all worth it.
I've I installed two (2) of these systems at different residences and have had no issues running them this past season. On natural gas you do lose a bit of power (18500 vs 20000) but for large houses (4500 & 8000 sq ft) running multiple HVAC units, fridges etc... we had zero issues running everything during power outages. Didn't even need to load shed the 2nd HVAC units.
We originally considered full house generators in a higher killowatage, but the 20k standby generator has proven to be more than enough.
I would definitely recommend and purchase yet again.
Looks way better than other units like the brutal looking generacs
INDUSTRIAL grade engine, not consumer or prosumer grade engines like in many other generators
Heavier and larger than other 20k units
VERY large transfer box (good and bad depending...)
20KW Whole House Briggs & Stratton Standby Generator
Very Good Generator. Very Good Value. I recently installed this Generator myself with an Electrician. Much of the installation is DIY, but You Need an Electrician to Run the Service Entrance Cable to the Transfer Switch First and then to the Fusebox Second. You definitely need an expert for that, because 240V at the service entrance can kill you.
The rest of the wiring is easy. I Bundled together Romex 4/3 with Ground, 12/3 with ground, and 18/5 sprinkler wire.T his generator has the well regarded approximately 1L, Vanguard Engine with 35HP. This is a Commercial Engine used in commercial tools and small tractors and is an Excellent Value in a Residential generator. Engine is Loud but very Powerful, and insulation could be thicker and is not applied on the back wall inside. This engine Runs Best on a heavy Load.
Transfer switch with Load shedding is good, but instructions on setting Dip Switches could be clearer. I recommend setting the dip switch to allow generator to warm up for 50 seconds prior to Load Transfer. The case is Galvaneal which like your car Rusts when Scratched, aluminum is preferable. Buy the Maintenance Kit. Its a bargain because it has oil and filter and oil filter and plugs, though I intend on putting in Platinum spark plugs
You Must get the Heater Kit because I saw even the light 5w30 synthetic oil Congeal in freezing Temps, and the oil warmer (and battery warmer) keeps it liquid. I had a problem in that generator kept shutting down. The Briggs telephone customer service guy is very Nice and Helpful.
I had a problem with the generator starting and then shutting down without putting out any power.The problem is that when I called the Local Distributors to do a warranty repair as per Briggs Headquarters, No Distributor was Willing to come to my house to do the Repair unless I signed up with a contract with them. I don't need a $400 contract to change the oil and filters. Although Briggs says that this is not required, they do need to better Monitor compliance by Local Distributors, who are only interested in coming if they either installed it or have a contract with you.
I therefore opened the Computer compartment and I saw a Connector disconnected. Connecting it fixed the Problem. Be sure to double check the settings on the transfer switch and double check the generator advanced settings on the generator screen, as mine had to be set to the correct 18KW on NG, and it showed that it was only set to 16KW NG. Remember 20kw Gen is only 18KW on NG.
I also Noticed that the Air Filter Did Not Come from the Factory with the Pre-Filter, (a green wrap around foam) that is included in the Tune Up kit purchased separately. There appear to be some Quality Control issues at the factory. A nice feature is the ability to program the exercise Date & time in the computer instead of Generacs requirement that you actually start it at the exact weekly time you want it to exercise.
There is an electronic Gas valve that is outside for fire protection reasons, and I recommend that you shelter it from the rain with a leaning a piece of metal or stone against the back of the generator.
Overall a Very Good Value for the price. Very Powerful engine, Clean power with No Flickering and a Nice Transfer Switch.
I recommend that you download the GE and Rheem Generator Manuals, since those Generators are Rebadged Briggs generators and the Manuals have additional information, regarding the undocumented menu that I show in the Video
I do Recommend this Generator. If you have Multiple Air Conditioner Units, then Get the Version from GE because that Transfer Switch allows for management of Multiple Remote AC compressors to prevent overloading the generator. Also Always Install a 5-2-1 Hard Start Capacitor Kit, as I show in my other video, so that the AC Compressors start up easily without overloading the generator.