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What size generator do I need for my house?
Use the Sizing Tool to get an idea of your power requirements. For a detailed estimate, contact your local KOHLER Generators dealer or distributor. They can analyze your home's electrical load and specify and install your generator system.

What is the difference between RESAL and RESA generators?
RESAL generators come with a transfer switch. RESA generators come with a controller that offers access to advanced settings; a transfer switch is purchased separately.

Can I install my KOHLER generator myself?
Kohler recommends that you choose a local KOHLER Generators dealer or distributor like us to install your generator..

How do I learn about local installation codes?
Code requirements for installing standby generator systems vary nationwide. That's why Kohler recommends having a factory-authorized dealer like us to install your system, since we are familiar with local and national codes, we'll make sure the generator is properly sized, and avoid code issues with local inspectors.

Does my generator purchase include a battery?
Generators ship without batteries to ensure that the freshest possible battery is installed at the jobsite. Your Operation Manual recommends the proper battery for your generator model. Batteries come in sizes that are readily available at any battery or auto-parts store.

What size transfer switch is best for my generator?
We will perform an onsite analysis to determine which generator and transfer switch offer the best solution for your home.

What is the difference between a transfer switch that's rated for a service entrance and one that's rated for a non-service entrance?
A service-entry-rated switch comes equipped with a main-line disconnect breaker built into the transfer switch. This is a nationwide code requirement when the transfer switch is wired directly into the incoming main power line for whole-house power. A non-service-entry-rated switch requires the addition of a disconnect breaker at the jobsite. The service-entry-rated switch saves you time and money during the installation process.

How long can my generator run before I need to check the oil?
We recommend checking the oil level after every 8-24 hours of operation, depending on the size and model of the generator. Oil change and filter change frequency and other routine maintenance varies per model, especially during periods of extended power outage. Check the Operation Manual included with your generator for a complete list of required maintenance procedures and schedules.

How do I manually "power off" the generator set?
Open the generator hood or access door and flip the circuit breaker to the "off" position (you'll find the breaker near the digital controller). This shuts off power to the house (the load). It's a good idea to run the generator with no load for 2-5 minutes. Then press the "off" button on the controller.

How do I open the generator unit?
A large metal key is included in your owner's packet. Insert and turn the key 45 degrees to open the top hood or side-access door of the generator.

How do I check the engine oil?

  1. Power off the generator and let the engine sit for two minutes to settle the oil. Pull the dipstick from the back of the engine and wipe with a clean rag. Insert the dipstick back into the dipstick tube and pull it out. Note the crosshatching on the end of the dipstick, from “F” (Full) to “L” (Low), and see where the oil level falls. Add oil if the dipstick indicates that the oil level is low. (See What type of oil should I use in my generator?)

  2. Locate the yellow oil-access cap on the front of the engine (look for the oil can icon). Add a few ounces of oil, then recheck the oil level by inserting and removing the dipstick. Add oil until the level is near “F.” Do not overfill the engine.

  3. When you’re finished adding oil, make sure the dipstick and oil access cap are securely in place. Push the AUTO button to place the generator back in standby mode. If the utility power is still out, the generator will start within three seconds. After the generator starts, move the circuit breaker to the ON position so the generator is now supplying power to the house.

Where is the oil dipstick?
The dipstick has a bright yellow ring attached to the end. The location varies by generator, but it's typically noticeable as soon as you open the access panel or hood.

What type of oil should I use in my generator?
Your generator ships with Mobile 1 5W30 full-synthetic oil, which is the oil Kohler recommendeds. Although a synthetic blend may be used, our recommendation is full-synthetic oil. However, if you know that the oil has been changed out to conventional oil, then use only conventional oil from that point on. Do not mix synthetic oil with conventional oil.

How much oil does a generator normally use?
The amount varies and depends on engine model, length of time since the last oil change, amount of power the generator is produceing and length of the power outage. Check the Operation Manual included with your generator for a complete list of required maintenance procedures and schedules.

What should I do if the generator is submerged in water?
Water and electricity are a very dangerous mix. If you can safely access it, power off the generator. (See How do I manually "power off" the generator set?) If it continues to run when submerged, internal damage to both engine and generator will be significant. If you can't safely access the generator or the main-line disconnect, do not make any attempt to turn it off.

How do I register my generator's warranty protection?
To register your warranty, we will complete a post-installation Warranty Start-Up at your home. Then, instead of your warranty beginning on the day the generator is purchased, it begins on the day your service technician submits your generator system's details to the Warranty Start-Up program. The technician completes a checklist, makes sure the system is properly installed, and enters all necessary information onto the Kohler Warranty site. This moves the warranty start date to the day your generator is installed, instead of the date it left the factory.


Don't Let Storms Keep You in the Dark!


Severe weather is the single leading cause of power outages in the United States. The amount and severity of these outages has spiked dramatically over the past decade, causing physical, emotional and economic hardship for many Americans. 

Koehler is our generator of choice. Born of a breakthrough in technology, Kohler® Power Systems has continued to follow that same path of innovation for more than eighty years. And it's that commitment which has made the company a global force in the manufacture and marketing a vast array of effective, affordable power solutions. Kohler's entry into the power business can be traced to the years immediately following World War I. With no background in generators or engines, the company leveraged the emerging demand for electricity on farms, their expertise in cast iron and their own ingenuity to produce the revolutionary Kohler Automatic Power & Light "power plant" in 1920.

In an age when generators worked by charging a series of storage batteries, which in turn provided 32 volts of power, the Kohler Automatic furnished an unprecedented 110 volts directly to power lines, turning itself on and off automatically in response to the demand for electricity. This tremendous power output combined with rugged reliability and ease of operation to quickly make the Automatic a favorite in rural areas where utility power had not yet arrived.

      Gas Generators

Protect your critical power applications with the generators that are proven to work. Custom-tailored to your specifications and engineered to provide consistent, reliable power. Unlike "one size fits all" generators, Kohler offers a full line of natural gas generators designed and rated to work specifically for continuous, prime or standby applications - making Kohler the cost-efficient, targeted solution.

  • Purpose-built solutions from 25 to 1300 kW.

  • Low-speed, 1800-rpm engines run quietly, offer extended life and provide great fuel efficiency.

  • Every size KOHLER gas generator is available EPA-certified, ECM-controlled and designed to meet the latest spark-ignited emission requirements.

  • Compared to diesel-fueled generators, KOHLER gas generators significantly reduce carbon monoxide and particulate emissions.

  • Gas generator sets operate on natural gas as well as a variety of other fuels.

      Transfer Switches

At the heart of your integrated power system is a quality KOHLER(R) automatic transfer switch (ATS) designed by Kohler, manufactured by Kohler and chosen specifically for your power requirements. The ATS bridges the gap between loss of utility and standby power, distributing power to feed the critical loads of your facility.

  • Safe, dependable protection for critical facilities

  • Available in standard, bypass-isolation and service-entrance configurations

  • Configurable in open, closed and programmed transition operating modes

  • Designed to interface seamlessly with KOHLER generators and switchgear

  • Comes fully loaded with the technology to do the job

  • Switches are UL listed and have CSA and IBC certifications available


      Portable Generators

Designed for job sites, camping, tailgating and other mobile activities. Powers individual items, like plug-in appliances and lamps with extension cords. Runs on gasoline or diesel


All portable generators have two power ratings: Continuous Power (aka Running Watts) and Maximum Power (aka Starting Watts).  Running Watts are what the generator can produce continuously while it’s running. Starting Watts are what it can produce for a short time to help start motorized electrical tools like drill machines, circular saws, nail guns, etc. 

Portable generators should ONLY be used OUTSIDE, never in enclosed areas. They should be used far away from windows, doors and vents. The exhaust from the equipment contains carbon monoxide, which is a poisonous gas that you cannot see or smell and can kill you in minutes.

      Home Generators

Ideal for backing up your home. Automatically starts and restores power in seconds — whether you’re home or away. It powers your home, including critical hard-wired systems like AC, heat, sump pumps, well pumps, security systems and large appliances
No refueling; runs on your home’s natural or LP gas and delivers high-quality power without harming your electronics.

  • Your automatic transfer switch (ATS) monitors the electricity coming from the utility. It's working 24/7 to protect your home.

  • Power Indicator: This handy little device is located on your automatic transfer switch. It tells you where your home’s power is coming from — utility or generator

  • Weekly Testing: Your KOHLER® generator will exercise itself and run diagnostic tests for 20 minutes each week to make sure it’s ready when needed. And guess what? It happens automatically.

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