20kw standby generators

20kw standby generators DEFAULT

20 kW Generator

20RESCL with Automatic Transfer Switch

  • Starting at $5875.00* MSRP
  • Model Number 20RESCL
  • Fuel Type LPG, Natural Gas
  • Phase Single Phase
  • ATS Included
  • Remote Monitoring Included

*Starting price in US dollars. Does not include installation or accessories or costs to export outside the US.

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Popular generators for backup power, with an automatic transfer switch included. When you lose power during an outage or storm, a hard-working 20 kW KOHLER® generator keeps your appliances working, the heat or AC running and your security system on.*

  • Reliable.

    Every KOHLER® generator is equipped with a heavy-duty, commercial-grade engine that stands up to extreme weather.

  • Powerful.

    In just 10 seconds, your KOHLER generator automatically restores power to a 5-ton (60,000 BTU) air conditioner, major appliances and electronics.*

  • Premium warranty.

    We've got you covered with 5-year, 2,000-hour protection, and a corrosion-proof enclosure that's built to last.

  • Award winner.

    KOHLER generators have received several awards, including the Most Valuable Product (MVP) Award 2010 by Building Products magazine.


  • PowerBoost™ technology provides power to start large loads such as central air conditioners without dropping power to other appliances
  • Extraordinary peak motor-starting capacity: 20RESCL at 41kVA at 240V
  • Premium power quality delivers exceptional digital voltage and frequency regulation along with low levels of harmonic distortion to protect sophisticated electronics
  • Powered by reliable KOHLER Command PRO® engine, designed and tested for tough commercial applications; with hydraulic valve lifters to eliminate need for lengthy break-in periods and expensive valve adjustments; operation speed is 3600 rpm (the standard for air-cooled generators)
  • Compatible with optional OnCue® Plus and OnCue® Plus Wireless Generator Management Systems, and Programmable Interface Module (PIM)
  • Also compatible with Load Control Module (LCM) or Load Shed kit with single-phase generators only


  • Comes with either an RXT 100-amp indoor-rated automatic transfer switch with 16-circuit load center or RXT 200-amp outdoor-rated service entrance rated automatic transfer switch with load shed kit
  • Quiet, neighborhood-friendly operation with sound levels similar to a typical central air conditioner
  • Stylish corrosion-proof enclosure impact tested to -30°F
  • Runs on either natural gas or liquid propane (LPG) with simple switching between natural gas and LPG in the field

*Based on generator and load size.

Rated kW LP20 kW

Rated kW NG18 kW

Amps LP83 amps

Amps NG75 amps

Peak Motor Starting kVA @240 V41 kVa

Alternator NoteAll information shown is for 1 Phase 60 Hz generator with the largest alternator option available.

Displacement999 cm³ (61 cu. in.)

HorsepowerNG 27.1 HP, LP 30.9 HP

Enclosure MaterialComposite

Sound Output During Weekly Exercise64 dB(A)

Sound Output During Full-speed Operation69 dB(A)

Response Time10 seconds

WarrantyPremium five-year limited warranty

Country of OriginUS

Certifications/ListingscUL,UL 2200,EPA

Automatic Transfer Switch IncludedIncluded

Remote Monitoring AvailableIncluded

Off Grid / Utility BackupUtility Backup

Weight580 lbs. (263 kg)

Alternator Type2-Pole, Rotating Field

Fuel Consumption on NG at 50% load?161 cfh

Fuel Consumption on LP at 50% load?82 cfh

ControllerRDC2 Controller

Cylinder ArrangementV-2

Dimensions1216 mm x 665 mm x 733 mm (48 in. x 26.2 in. x 29 in.)

Engine Manufacturer/DescriptionKOHLER

Engine ModelCH1000

Engine/Alternator RPM3600

Fuel TypeLPG,Natural Gas

Frequency0=50 Hz, 1=60 Hz

PhaseSingle Phase

Voltage @ 60 Hz120/240

Digital Voltage Regulation±1.0%

Built in Mounting PadYes

Optional Accessories

Sours: https://kohlerpower.com/en/residential/generators/product/20rescl

This is a strange and tough time. Many of us are still working from home, while others continue to deal with wildfires, tropical storms, and heat waves. And as the colder months approach, we face the possibility of power outages that can last from hours to weeks. Investing in a standby generator is one of the best ways to keep your most important appliances up and running and help everyone inside stay a little more comfortable.

Check out quick reviews below of our top five home standby generators, then scroll farther for buying info and full reviews of these models.


Generac Protector QS 22kW Standby Generator

Generac Protector QS 22kW Standby Generator



Shop Now


No worries about an overheating generator  


Briggs & Stratton 20kW Standby Generator

Briggs & Stratton 20kW Standby Generator

Briggs & Strattonlowes.com




Enough power for you and your extended family


12,000-Watt Automatic Air Cooled Standby Generator

12,000-Watt Automatic Air Cooled Standby Generator

Briggs & Strattonlowes.com




No need to overspend for a small home


Generac 7043 Home Standby Generator

Generac 7043 Home Standby Generator





You won’t even notice the power went out. 


Generac PowerPact 7500-Watt Standby Generator

Generac PowerPact 7500-Watt Standby Generator




Stay in budget and have enough electricity for your necessities

How to Choose a Generator

Picking a generator depends mainly on the size of your home and what you wish to power. The average house will take at least 5,000 to 7,500 watts to run only the most critical equipment—think fridge, heat, and water. Often, a portable home generator can get you through an outage, but there are also options that are capable of powering your entire house. If you’re looking for full power, you will want to invest in at least a 20,000-watt generator; this also goes for people with exceptionally large homes or families, which will use much more power than, say, a two- or three-person household.

Popular Mechanics

It’s also important to consider that while generators are certainly a hefty investment, they will pass the test of time. Most home standby generators can run anywhere from 10,000 to 30,000 hours. If you were to use it for 100 hours per year, that translates to 10 to 30 years.

Things to Keep in Mind

If you’re not familiar with standby generators, here are some pointers on what to look out for when buying and operating.

  1. Make sure you select the right size generator for the critical circuits you intend to power. While most modern generators have circuit protection, it’s still good practice to avoid overloading them. In a worst-case scenario, overloading can cause a generator to overheat, suffer permanent damage, or even catch fire. Intermittent power supplied by an overheating generator may also damage some appliances.
  2. Standby generators usually run on propane (LPG), supplied by large tanks on the property, or natural gas piped in from the street. Either way, they’re permanently connected to the fuel source.
  3. Although consumers may install a standby generator, it’s best to hire an electrical contractor. They’ll be able to get the permits required to install one and make sure the installation meets all local codes, including where generators and propane tanks may be located with respect to windows or doors.
  4. If your generator runs on propane, make sure the tank can hold enough fuel to be able to run for at least three to four days. And if you live in an area with seasonal storms, it’s a good idea to fill the tank at the beginning of the season if it isn’t already.
  5. Most standby generators will run autonomously, starting on their own when the power goes out and shutting down when it comes back on. They’ll also periodically run “exercise cycles” to ensure they’re always ready to go and keep the starting batteries charged.

How We Selected

We researched expert sources and customer reviews from websites like Amazon and Home Depot to select the top five standby generators of the year.


Generac Protector QS 22-kW Standby Generator

No worries about an overheating generator

Wattage: 22 kW | Size: 63 in x 29 in x 30 in | Warranty: 5 years

Generac Protector QS 22kW Standby Generator




While generators can be lifesavers in a storm, they often lose their reliability in hotter climates. This generator was designed with a top of the line liquid cooling system so that it stays cool even when the weather is unbearably hot. Not only does this system cool better, but it is also generally quieter then air cooled models—this makes it a great choice for residential areas where you don't want to disturb your neighbors. Since it is a 22kW model, it can power most homes, but because of the wattage and cooling system, it is also quite expensive. The cooling system can also be a bit finicky and may require more maintenance than an air cooled system, but if you are willing to put in the work, it can be a lifesaver in a summer power outage.


Briggs & Stratton 20-kW Standby Generator

Enough power for you and your extended family

Wattage: 20 kW | Size: 30 in. x 50 in. x 33 in. | Warranty: 5 years

Briggs & Stratton 20kW Standby Generator

Briggs & Strattonlowes.com



Larger homes require more energy, particularly when you have a big family inside that house. This 20,000-watt generator is a great option for powering essentials in such a house, or powering an entire small home. Customers praised its ease of installation, and it has a durable galvanized steel (read: weather- and rust-resistant) enclosure, which eliminates any need for additional coverage or protection. It also features a 100-amp automatic transfer switch. This allows your power to turn back on within seconds of an outage when the generator automatically takes over.


Briggs & Stratton 12,000-Watt Standby Generator

No need to overspend for a small home

Wattage: 12 kW | Size: 37 in. x 26 in. x 28 in. | Warranty: 5 years

Briggs & Stratton 12,000-Watt Standby Generator

Briggs & Strattonlowes.com



  • Can only power small home

This little guy only puts out 12,000 watts, so it won’t be able to power an entire house. But it can juice the essentials in a small one. This generator is a great option if you want a power backup for a few necessities but wince at the thought of spending upwards of $4,000. Sure, it’s still an investment, but it comes with a five-year warranty which covers parts, labor, and travel. And it does automatic weekly power checks at a low RPM to ensure that it’s working correctly when you need it without using more fuel than is necessary.


Generac 22-kW Air-Cooled Standby Generator

You won’t even notice the power went out.

Wattage: 22 kW | Size: 29 in. x 48 in. x 25 in. | Warranty: 5 years

Generac 7043 Home Standby Generator




In particular situations where waiting for the power to come back on could pose a special danger, this generator makes sure all your needs are met. It comes with a five-year warranty and has Wi-Fi capabilities, which allow you to check the status of your generator at all times, affording peace of mind in storm season. The Generac 22-kW is designed to power your entire house, which means you will have every comfort you’re used to while waiting for your regular power to come back on. This is a particularly sound investment for families that still have kids learning from home or parents that may not have the luxury of heading into school or the office when the electricity goes out. Generac also offers 24/7 customer service if you do have any issues, since the power always seems to cut out outside of business hours.


Generac PowerPact 7.5-kW Generator

Stay in budget and have enough electricity for your necessities

Wattage: 7.5 kW | Size: 27 in. x 36 in. x 28 in. | Warranty: 3 years

Generac PowerPact 7500-Watt




This generator may be under $2,000, but it’s fully capable of preventing the contents of your fridge from spoiling and keeping the inside of your house at a reasonable temperature. It is able to power up to eight circuits in your home and significantly quieter than a portable generator. It has a durable aluminum shell that will keep it protected from inclement weather. And if any issues do arise, it comes with a three-year warranty. The generator also features three removable sides, which allow for easy access should it require maintenance.

Gabrielle HondorpBefore joining Runner's World as an Editor in 2019, Gabrielle Hondorp spent 6 years in running retail (she has tested top gear from shoes, to watches, to rain jackets which has expanded her expertise—and her closets); she specializes in health and wellness, and is an expert on running gear from head-to-toe.

Sours: https://www.popularmechanics.com/home/a34059872/best-home-standby-generators/
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Norwall PowerSystems
Norwall PowerSystems
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Sours: https://www.norwall.com

How much does a standby generator cost to install?

Standby generators come in a wide variety of sizes, varying in cost from just under $2,000.00 to $20,000.00 and more.  Installation costs can also vary widely.  It is best to consult a qualified installer to determine the proper size generator for your home and your needs.

First things first

Generators are sized in kW or kilowatts, so a 10kW generator will produce 10 kilowatts or 10,000 watts of power.  A qualified generator installer can help you determine the proper generator size after calculating the anticipated electrical loads.

Keep in mind, a standby generator can be connected to all of your home’s electrical circuits or just a few “essential circuits”.  Examples of the more common essential circuits include the refrigerator/freezer, kitchen receptacles, a few light and receptacle circuits, the fan blower motor for gas heating equipment, the security system, garage door opener and, if you have them, water pumps and sump pumps.  Most of these circuits do not require a large amount of power to keep them operational but it’s important to consider the sum total of each of these loads when sizing a standby system.

A very popular and “easy on the budget” generator is a “20kW” (20,000 Watts) model.  It’s easy on the budget because most 20kW generators are air-cooled (as compared to “liquid-cooled”) and cost around $5,000.00, including a 200-Amp Automatic Transfer Switch (ATS). 

Make sure you match the size of the ATS with the size of the load center it will be connected to.  Most 20kW generators are connected to a 200-Amp load center and, thus, come with a 200-Amp ATS.  If the generator will be connected to a 150-Amp or 100-Amp load center, the ATS should match the size of the breaker panel.  So--if the ATS is to be connected to a 100-Amp load center, you will need a 100-Amp Automatic Transfer Switch.

If your home is 2500 square feet or less, a 20kW generator should suit your needs well, particularly if you have gas heat and hot water.  If the range top is also gas, all the better.  A 20kW generator will run most house receptacles, lights, and up to a 5-ton central air conditioner. 

When a generator is connected to all house circuits, the installation is referred to as a “whole house generator installation.”  Connecting only a few essential circuits, or “partial house generator”, can be an effective means of providing power to electrical circuits important to you while saving on overall project costs.

Let’s say you are looking for a budget-friendly installation of a “partial house generator.”  You have one or two breaker panels, gas heat and hot water, and you’ve identified the following electrical circuits as “essential” while operating under generator power: 

  • kitchen receptacles and lights (including refrigerator/freezer)
  • the fan blower motor for your gas heat
  • the security system
  • garage door opener
  • downstairs lights and receptacles, and
  • the downstairs central air conditioning unit.  You have a second air conditioner and heating system for the upstairs, but this area of the home is not important to you while operating on generator power.

The “essential circuits” listed above might be installed on both of your breaker panels.  Your objective will be to move the "essential circuits" to one of your two breaker panels.  The panel holding these "essential circuits" can be referred to as your "generator panel" because the generator will energize only the circuits located on that circuit breaker panel.  The other circuit breaker panel will hold non-essential loads like the upstairs circuits, the upstairs air conditioning and, perhaps, your laundry equipment.  Those circuits will not be energized by the generator.

So--in the above illustration, you would need just one (1) ATS appropriately sized to match the size of the circuit breaker panel it is connected.

If your 2-story home has just one circuit breaker panel rated at 200-Amps, there is no need to install a second panel for this installation.  You just need a 200-Amp ATS that is also service-entrance rated.

Most manufacturers include ways to load-shed the non-essential loads, such as a second air conditioner or hot-water heater.  Even though the upstairs lights and receptacles are still “hot”, these circuits will not consume power from the generator unless a light is turned “on” or an appliance is operated from a receptacle.  What’s important is to disable heavier non-essential loads such as air conditioning, electric hot water heaters with load-shed devices available from the generator manufacturer.

Now it’s time to determine the right generator for the job

Now that we’ve identified which electrical circuits are important, we can project the total electrical load from these same loads.  Here’s a sample scenario during the summer months where we are doing the laundry but we’re conserving power and not operating the washing machine and dryer at the same time.  We’re also not operating any cooking appliances.  Someone is watching TV and downstairs, one ceiling fan is “on” as well as the downstairs air conditioner.  Let’s look at the results:

We’re conserving power where possible because, for budgetary constraints, we decided to have a 20kW air-cooled generator installed.  The 20kW generator coupled with a 200-Amp Automatic Transfer Switch can be connected to all house circuits installed on a 200-Amp Load Center, making it a “whole house generator” for homes 2500 square feet and less.  Keep in mind the generator is rated at 20kW when using LP as the fuel source, and 18kW for natural gas.

Let’s talk about overall project costs

Costs for typical 20kW generators (with ATS) vary from around $4,500 for a Generac generator to around $4,800 for a Cummins.  Most manufacturers now offer a 5-year limited warranty (generally, 5-years on parts and 2-years on labor) with an optional 5-year comprehensive warranty.

The Cummins RS20A Home Standby Generator is growing in popularity with homeowners for good reason.  It happens to be the quietest air-cooled generator on the market and Cummins has been awarded "Brand Leader" recognition for each of the past five years at Builder magazine.

If you live in the northern half of the USA, you will need a cold-weather kit.  We have the generator and transfer switch priced at less than $4,900.00 and you can check it out here.  If you live in the south, no cold weather kit is required, so the generator and switch can be purchased for less than $4,600.00.  View it online here.

Installation costs can vary widely.  The lowest cost installation can be obtained if the electric meter and gas meter are located next to each other on the same side of the house.  Installation costs may range a bit higher when the generator is located away from either the electric or gas meters, especially in situations where the electric meter is on one side of the house while the gas meter is on the opposite side of the house.

When budgeting for a professionally installed standby generator for your home, it is best to assume installation costs will closely approximate the cost of the generator equipment.  This isn’t always true but, more often than not, the rule of thumb is fairly accurate.  So—if you spend, say, $5,000.00 for the generator equipment, expect the total project to be around $10,000.00.  Project costs for liquid-cooled generators begin in the mid-teens and can often range well in excess of $20,000.00.

The 20kW air-cooled generator is the generator of choice in 70% of all installations.  Use it as a whole house generator for homes under 2,500 square feet (with gas heat and hot water), or as a partial house, essential circuits only generator for larger homes.  If your home exceeds 2,500 square or is an all-electric home and you’re looking for a whole house generator, you will need to focus on liquid-cooled generators.

The best advice we can offer anyone considering a standby generator is to consult an industry professional.  We’ve seen folks make the mistake of putting the cart before the horse by purchasing a generator without any thought of what they want to power with the generator.  I’ll never forget the gentleman who found a “great sale” on a standby generator for $1,900 at a big box store.  He bought the 7kW (that’s only 7,000 watts) generator, then called us for a quote to install it.  I asked him, “which circuits do you want to power with your new generator?”  He responded, “the entire house.”  The man lives in a 4,000 square foot home with three air conditioners.  Needless to say, I had to explain why the installation scenario he described would not work.

Avoid making this mistake ...

You might be shopping at a Big Box Store and find a standby generator with lettering on the box claiming to be a “Whole House Generator”.  More than likely, the kit includes a 200-Amp ATS that connects to your home's 200-Amp service, thus, covering the entire house.  The generator itself can be as small as 12kW or up to 22kW.  

This is important:  The term “Whole House” refers to the ATS, not the generator.  If you connect a 200-Amp ATS  to your home's 200-Amp service, you now have "Whole House Coverage". 

If you are looking for a Whole House Generator, it is critically important that you calculate the anticipated electrical loads, better still, consult an industry professional.

An “industry professional” is not necessarily any electrical contractor.  While there are many gifted electricians out there who can quickly resolve just about any electrical problem, the truth of the matter is many electricians have little or no experience installing a standby generator.  The lesson to be learned here is to work with an experienced generator installer and, preferably, also an authorized dealer for the manufacturer.

If you are shopping for a talented generator installer, ask each this question:  “How many standby generators have you installed in the past 12 months?”  If any of them respond, “Oh, I think I can probably figure it out,” you would be well advised to take a pass on any quote they offer, even if it is your low quote.

Buckeye Power Systems is an authorized dealer for Generac and Cummins Power Generation and we offer customers the full line of generators from each manufacturer. 

If you're in the market for a standby generator, we encourage you to call us for even better pricing than found on our website.  Manufacturers require dealers to advertise at a set Minimum Advertised Price, but we can sell the equipment to you for less when you call us at 901-379-8097.

Sours: https://buckeyepowersystems.com/pages/how-much-does-a-standby-generator-cost-to-install

Standby generators 20kw

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#504 - New Cummins 20kw Standby Generator, Front Porch Makeover, Roof Pitch Repair Continued.

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