6 Best Kohler Generators – Reviews of the Top Models from the Brand

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Last updatedLast updated: January 07, 2022
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There is a Kohler generator for everyone out there. You can go for a portable generator, or you can invest in an automatic standby generator – all offer you value for your money. Backed by a five-year and 2,000-hour warranty, the generators are designed to inspire awe. The company is reliable and only releases premium products into the market.

Searching for the best Kohler generator, however, was not an easy task. We took 10 Kohler generators into consideration when compiling our list because they stood out to us. The Kohler PRO 7.5E emerged as our Editor’s Choice because it is convenient to use and functional at the same time. This portable generator is powered by gasoline and comes with a massive fuel tank of 8 gallons, allowing it to run for 12 hours at a half load. We narrowed our final list down to 6 popular Kohler generators so you could find the best generator for your own purposes.

First and foremost, you need to keep in mind that there are two generator types – portable and standby – and Kohler produces both. We also considered the fuel usage and power output of the generators to get the understanding of their efficiency.

We spent a few weeks curating the information we had collected from customer reviews, product specifications, and the brand approach. This article begins with a table listing all the products followed by in-detail reviews and a buying guide.

Top 6 Kohler Generators Review 2022


Kohler PRO7.5EBest Portable Generator

  • Generator type: portable
  • Fuel type: gasoline
  • Peak/rated watts: 7,500/6,300
  • Engine displacement: 429cc
  • Fuel tank: 8 gal.
  • Run time: 12 hrs (1/2 load)
  • Outlets: (2) 120V 20A Duplex; (1) 120V 30A Locking; (1) 12V DC 8.3A; (1) 120/240V 30A Locking
  • Start type: electric, recoil
  • Dimensions: 4 x 21.4 x 22.3 in
  • Weight: 220 lbs
  • Warranty: 3-year limited

You can find yourself in the need for emergency power at any point in time, and it is best to be prepared for the worst. This generator from Kohler is all you need to ensure that you are never left without power supply.

You can make adjustments to the machine based on your needs. Since this generator uses fuel efficiently, you will save a significant amount of money in the long term. The generator comes with an auto-idle feature, which ensures that the engine is automatically set to the idle mode, which also saves you some fuel. The Accu-Fill feature of the generator allows safe and easy refilling. There is also less spilling because of the angled fuel inlet.

When it comes to security, this generator meets all the OSHA requirements and is absolutely safe to use. Make sure that you use it properly and follow all the guidelines provided by Kohler.

You will have no problem maintaining this generator because the machine will provide you with easy reminders. The Maintenance Minder that comes with the generator shows you the hours of run time so that you can keep track. Moreover, it also lights in case you need to change the oil or the filter. The automatic voltage regulator keeps the power supply consistent and prevents surges.

Why is it special?

  • Plenty of power and portability
  • Electric start with recoil backup
  • Easy to install
  • High arch spout
  • Can be used with a wheel kit
  • Maintenance Minder feature

What are the flaws?

  • No wheel kit included
  • Instructions could be more detailed

Kohler 20RESCL-200SELSBest Standby Generator

  • Generator type: standby
  • Fuel type: natural gas or liquid propane
  • Rated kW LP: 20kW
  • Rated kW NG: 18kW
  • Fuel consumption: 161 cfh (NG at 1/2 load); 82 cfh (LP at 1/2 load)
  • Engine displacement: 999cc
  • Dimensions: 48 x 26.2 x 29 in
  • Warranty: 5-year or 2000-hour limited warranty

The Kohler 20RESC will make sure that you are never caught in a situation where you do not have access to a consistent power supply. If you invest in this generator, you will know that you are covered in case there is a bad storm, and your power is cut off. You can wire this Kohler standby generator into the electrical panel and fuel system. This will allow the generator to start functioning immediately.

With this generator, you will have +/-1% voltage regulation, and that will prevent surges. The generator creates less than 5% harmonic distortion so that your sensitive appliances are always safe and free of damage. The five-year warranty will have your back in case you need help.

As a 20,000-watt air-cooled generator, it will be able to balance multiple appliances without any difficulty. As soon the power goes out, the generator will start working to give a fast response. The power will be restored to your home within 10 seconds. The power quality is premium, and the generator operates quietly so as to not cause any disturbance. It comes with a 200-amp load shedding and automatic transfer switch so that the power distribution remains manageable. You will also find that the generator comes with a 100% corrosion-proof enclosure. As a result, it is protected from external damage even if you live in a place with rough weather conditions.

What stands out?

  • Has a corrosion-proof enclosure
  • Comes with an automatic transfer switch
  • Starts working as soon as the power is out
  • Composite noise dampening enclosure reduces noise

What cons did we manage to find?

  • Tech support not responsive

Kohler PRO2.8iBest for Recreational Purposes

  • Generator type: portable
  • Fuel type: gasoline
  • Peak/rated watts: 2,800/2,500
  • Engine: 171cc air cooled 4-stroke gasoline OHV single-cylinder
  • Fuel tank: 2.55
  • Run time: 7 hrs (rated load), 14.7 hrs (1/4 load)
  • Outlets: (1) 120V 20A Duplex; (1) 120V 30A Locking; (1) 12V 8.3A Battery Charger
  • Start type: recoil
  • Dimensions: 2 x 15.6 x 16.7 in
  • Weight: 68 lbs
  • Warranty: 3-year limited

If you are in the hunt for a small or recreational generator that will be functional but portable and convenient to use, then this model might just be the one for you. This open-frame model from Kohler is powered by gasoline and comes with a rating of 2500 rated and 2800 surge watts. While this machine is not built for multitasking, it will provide you with consistent power. It meets all the standards set by a premium Kohler generator, and you can be assured that you are getting a machine of top quality.

The generator has a 12-volt output that you can use for charging batteries. You will appreciate the GFCI breaker integrated into the generator that is meant to provide further electrical protection. The machine does have a float style fuel gauge, and it also has a 30-amp RV/marine outlet. You can only start this machine manually, but don’t worry as the process is simple.

The generator has a fuel shutoff option so that you can be economical. It also has a low-oil shutoff feature, which means that the generator will automatically shut down when it detects an oil shortage. This will prevent the engine from suffering excessive wear and tear. You can detect your fuel usage via the fuel gauge, and refill the machine when you see the low-oil indicator light.

Why is it special?

  • Inverter technology
  • Easy to install
  • Remote valve configuration makes the generator easy to use
  • Comes with low-oil shutoff features

What are the flaws?

  • Does not have an electric start

Kohler 12RESVL100Most Efficient Standby Generator

  • Generator type: standby
  • Fuel type: natural gas or liquid propane
  • Rated kW LP: 12kW
  • Rated kW NG: 11kW
  • Fuel consumption: 128 cfh (NG at 1/2 load); 57 cfh (LP at 1/2 load)
  • Engine displacement: 725cc
  • Dimensions:6 x 28 x 32.4 in
  • Warranty: 5-year or 2000-hour limited warranty

If you are looking for a generator that will meet all your needs during power outages, but don’t need excessive power, then this model might be what you want.

This 12kW standby generator has an automatic transfer switch, which ensures that there is no imbalance in power distribution. This generator is safe, easy to use, and will provide you with an immense amount of power that you can use to power multiple appliances at the same time. The 12kW generator will keep your heater or AC running while allowing your smaller appliances to function at the same time. All you have to do is be careful about your load size so that you do not overload the generator accidentally. The generator is powered by a unique power boost technology that provides enough power to handle large loads. The advantage is that the power supply to other appliances is not affected in any way.

The generator has been built with the help of premium engineering technologies so that your electronics and appliances are always protected. It provides you with the perfect balance of digital voltage and frequency regulation. The low levels of harmonic distortion ensure that your sensitive appliances do not suffer undue damage.

What stands out?

  • Can handle large loads of power via the power boost technology
  • Comes with an automatic transfer switch
  • Can power multiple appliances at the same time

What cons did we manage to find?

  • Customer service is not up to the mark

Kohler PRO3.7EBest Multiple-Start Portable Generator

  • Generator type: portable
  • Fuel type: gasoline
  • Peak/rated watts: 3,700/3,000
  • Engine displacement: 208cc
  • Fuel tank: 4 gal.
  • Run time: 9 hrs (1/2 load)
  • Outlets: (1) 120/240V 30A 4P NEMA L14-30R; (1) 125V 30A 3P NEMA L5-30R; (2) 125V 20A NEMA 5-20R GFCI; (1) 12V DC
  • Start type: electric and recoil
  • Dimensions: 3 x 19.2 x 19.2 in
  • Weight: 138 lbs
  • Warranty: 3-year limited

This model is easy to install, and you will be able to do it by yourself, even if you are not familiar with generators. Once the machine is installed, you can navigate the controls and learn the operation. This generator is versatile in the sense that you will be able to attach wheels to the machine and move it from one place to another without facing any difficulty. However, the wheels do not come with the generator, so you will have to buy a wheel kit separately to avail that feature.

This generator is a fuel saver, which means that it allows you to save money and energy over time. It will not use up excessive amounts of power when the requirement is less. Instead, the generator will automatically slow itself down. The generator also comes with auto-idle features so that it does not waste power when not in use.

One of the most unique features of this model is that it comes with maintenance minders so that you do not have to be anxious about taking care of the generator. The total running hours will be on display so that you can keep track. When the generator needs a change in oil or filter, you will notice a red blinking light. The machine is equipped with an automatic voltage regulator.

What are our favorite features?

  • Plenty of outlets, including GFCI
  • Electric start with recoil backup
  • Easy to install
  • Remote valve configuration
  • Has maintenance minders
  • CARB compliant

What could be better?

  • Heavy for its size
  • Wheel kit not included

Kohler 14RESAL-200SELSBest Average-sized Standby Generator

  • Generator type: standby
  • Fuel type: natural gas or liquid propane
  • Rated kW LP: 14kW
  • Rated kW NG: 12kW
  • Fuel consumption: 124cfh (NG at 1/2 load); 60cfh (LP at 1/2 load)
  • Engine displacement: 725сс
  • Dimensions: 48 x 26.2x 29
  • Warranty: 5-year or 2000-hour limited warranty

This generator from KOHLER aims to make your life easy. You will learn how to use it in no time. Sometimes, you must have an alternate power source at your disposal so that you are not helpless if the power is cut off at your house. Powering up your generator will let you use your appliances as if nothing has happened.

This powerful generator from KOHLER will immediately kick into action if you install it properly. The KOHLER standby generator can installed as an air-conditioning unit into the existing electrical panel and fuel system so that you can expect a fast response. The power will be restored in your house in just 10 seconds. It has been engineered to provide a fast response to reduce the problems you have to face. With this 14,000-watt air-cooled home generator, you will be able to continue your regular life and enjoy the convenience of using your appliances simultaneously. It provides high power output and is thus able to distribute power among multiple appliances and handle huge loads.

The generator has a 200-amp automatic transfer switch that meets all the CARB standards. If you are planning to install the generator outside, you will be happy to know that the machine comes with a 100% corrosion-proof enclosure that provides protection against harsh weather conditions. You will not have to worry about your generator even if it starts raining heavily. The +/-1% voltage regulation feature is really handy and prevents accidents.

What do we love it for?

  • Can power multiple appliances at the same time
  • Restores power within 10 seconds
  • Protected by a tough enclosure

What were we disappointed with?

  • Maintenance readings are not very reliable

Things to Consider

Kohler is a brand that has established a solid reputation over the years, and you are unlikely to regret your decision of purchasing a Kohler generator. However, these are some things you need to consider in order to get the best Kohler generator for your personal needs.

Kohler generators: What you should know about them

All Kohler generators are tested for quality control at every step of the way so that the final product is one that you will treasure. The engineering teams hired by the company are required to conduct many performance tests even during the design process. KOHLER assures total reliability when it comes to their generators. They are powered by commercial-grade engines that have been built to withstand very high workloads. You will be able to use the generators for many years. Kohler generators are used to power public institutions such as hospitals, airports, and power plants, and that says a lot about their public image. The company is completing a century in the industry this year, but they keep up with all the latest technologies to make their generators more modern and user-friendly. The PowerBoost Technology enables Kohler generators to undertake large starting loads without affecting the power supply to other appliances.

Generator type: portable or standby?

6 Best Kohler Generators – Reviews of the Top Models from the BrandKohler allows you to choose between portable and standby generators. You must select the type that will work best for your particular needs.

Portable generators like the Kohler PRO7.5E are designed to meet the power requirements for job sites and camping trips. You can also use them for tailgating and similar mobile activities. They can be used to power appliances one at a time or simultaneously. However, you must be vigilant about not overloading the generator. They can run on natural gas, gasoline, or liquid propane.

On the other hand, standby home generators like the Kohler 12RESVL100 are perfect for backing up the power supply of the house. They are designed to be installed in connection with the main electrical system so they can automatically restore power in a matter of seconds. You will not even have to switch it on. There is no refueling required when it comes to standby generators. These generators can provide a large amount of power and can power critical hard-wired systems. The high-quality power delivered by Kohler standby generators will not cause any damage to your appliances.

How much power do you need?

When it comes to choosing a generator, the power output should take precedence over almost all other factors. You simply cannot invest your money in a generator that does not even meet your power needs. If you are planning to use your generator for heavy-duty purposes for long periods of time, then you must go for a model that offers 12Kw or more. These generators can be used to back up the power supply at your house and power multiple critically heavy appliances at the same time. On the other hand, if you know that you will only use the generator for recreational purposes, then you can settle for a model with lesser power output like the Kohler PRO2.8i. For standby models like Kohler 20RESCL-200SELS, you will not need to refuel.

How long you need to run your generator?

6 Best Kohler Generators – Reviews of the Top Models from the BrandStandby generators such as the Kohler 20RESCL-200SELS are designed in such a way that you will not have to refuel them constantly. Once the generator is in action, it will provide you with power until the electricity supply to your house is restored. However, portable generators are a different story because they come with a limited fuel tank capacity, which results in a limited runtime. You must have an idea of the duration of your usage so that you can choose a tank capacity accordingly. The Kohler PRO3.7E has a 3.4-gallon fuel tank and provides a run time of 9 hrs at 1/2 load, but the Kohler PRO2.8i has a smaller tank of 2.55 gallons and gives a run time of 6.7 hrs at rated load.

Safety features

Most KOHLER generators come with plenty of safety features so that users face no problems when using them. The low-oil shutoff feature ensures that the generator shuts down when there is a shortage of fuel and does not lay pressure on the engine. The overload prevention feature keeps the generator from causing accidents. When the machine detects too much load, it shuts down instead. The +/-1% voltage regulation in standby models like the Kohler 20RESCL-200SELS prevents unnecessary surges in the power so that your appliances remain undamaged. The power they provide has less than 5% harmonic distortion so that your sensitive appliances are protected. Portable models like the Kohler PRO7.5E have maintenance minders.

Tips and tricks

    • Make sure that you do not use the generator indoors for long periods to avoid toxic emissions.
    • Generators should always be kept in dry surroundings because moisture can corrupt the machine permanently.
    • Back-feeding a powerful generator can lead to accidents.
    • The filter must be checked at least twice a week and cleaned properly.
    • Refueling a generator when it is still hot is not a great idea and can also lead to unnecessary spillage.
    • If you are using a standby model, you must wire it into the electrical panel and fuel system of your house for an automatic response.
    • Always use high-quality, fresh fuel.

Kohler generator prices

Since Kohler offers different ranges when it comes to generators, it is only natural that they offer different prices.

Portable generators tend to com cheaper because they have a lower power output. However, if you want to carry the machine from place to place, then they are ideal for you. They are usually priced between $1500 and $2500. You can get the Kohler PRO7.5E for about $1600 and the KOHLER Pro 2.8i for approximately $1900.

Standby generators tend to be on the more expensive side, starting from $4000. You can get both the Kohler 20RESCL and Kohler 12RESVL100 for less than $5000.


Kohler has immense faith in its products, and you should too. The company tries its best to put out products that are premium and functional. KOHLER generators are worthy investments, and it is unlikely that you will ever regret your purchase. Since the company believes in the quality of its products, it offers a good warranty offer for all its generators. All the standby generators come with a 5-year or 2000-hour limited warranty. This means that you will be able to avail the warranty at any point within five years of your purchase and before you use the generator for 2000 hours. On the other hand, the portable generators come with a 3-year limited warranty that you can avail without any problem. You can contact the company directly, or get in touch with the retailer from whom you bought the generator.

If you own an RV or recreational vehicle, then you should get your hands on a portable generator that will work in conjunction with the machine seamlessly. However, you should be aware that not all Kohler portable generators can connect to an RV directly because they do not have the necessary RV outlets. However, Kohler does carry portable generators that have RV power outlets that will allow you to link the RV with the generator directly. Make sure that you connect the wires properly, or else the setup might not work.

There is no reason why you should not be able to power your home with a portable generator. The primary advantage of a portable generator is that it can be carried from one place to another and be flexible in terms of usage. If you have the portable generator at home, you can hook up the different appliances with the machine separately and power them up. However, you will not be able to enjoy the advantages of a standby generator. When you install a standby generator in your house, it automatically starts working when the power is cut. The power is restored in the house in a period of 10 seconds, and you do not have to put in any effort.

Our Verdict

We would like to end this article by mentioning the Kohler generators that impressed us the most.

The Kohler PRO7.5E is a portable generator that runs on gasoline. It can provide a long run time of 12 hours because of the 8-gallon fuel tank. It has both an electric start and a recoil start. The maintenance minder feature is a boon because it keeps you up to date with every development. The generator allows users to make custom adjustments and is OSHA compliant. The Kohler 20RESCL-200SELS is a standby generator that can be powered by both natural gas and liquid propane. It is fuel-efficient but is able to restore power within 10 seconds. The resulting power output has less than 5% harmonic distortion. The Kohler PRO2.8i comes with a 2.55-gallon tank and is perfect for users who want a small and portable generator. At 1/4 load, the generator can provide a run time of 14.7 hrs.

We hope we could help you find the best Kohler generator for your needs!

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