generac vs kohler whole house generator


As a homeowner, I understand the importance of having a reliable power source, especially during emergencies. Whole house generators have become a popular solution for homeowners who want to ensure uninterrupted power supply. In this review, I will compare two of the most popular brands in the industry, Generac and Kohler.


When choosing a whole house generator, the key features to consider include engine size and power, fuel consumption, transfer switch options, and noise level. Generac and Kohler both offer excellent options in these categories.

Generac generators come with engines ranging from 7 kW to 150 kW, and Kohler offers engines with a range from 8.5 kW to 150 kW. Fuel consumption varies between the two, with Generac using around 2.6 gallons per hour at full load, while Kohler uses approximately 3.35 gallons. Transfer switch options are also comparable, with both brands offering automatic switches.

In terms of noise level, Generac generators are known for being relatively quiet compared to other generators, producing around 65 decibels on average. Kohler generators are similar in noise levels, producing around 66 decibels on average. These features have a significant impact on the functionality of the generator, and it’s important to consider them when choosing a brand.


When it comes to real-life scenarios, Generac and Kohler generators have proven to be reliable. Generac generators are known for their ease of use and reliability, with some customers reporting running their Generac for over a week during a hurricane without any issues.

Kohler generators, on the other hand, have received praise for their ability to handle high-temperature environments and their exceptional performance during extended outages.

As with any product, there are strengths and weaknesses to consider. Generac’s strength lies in its ease of use and its ability to handle a wide range of applications. Kohler’s area of expertise is in high-temperature environments, making it an ideal choice for homeowners who live in hotter climates.

Long-term reliability is also a significant factor to consider. Generac generators typically require less maintenance and have a longer lifespan compared to Kohler generators. However, Kohler offers robust warranty options that can alleviate concerns about their reliability over time.


The cost of a whole house generator can vary depending on the size and brand. For example, a 7 kW Generac generator can cost around $2,000, while an 8.5 kW Kohler generator can cost around $3,000. When comparing prices, it’s essential to consider the value proposition of each brand.

Generac offers a solid value proposition for those seeking functionality and ease of use. Kohler generators, while pricey, offer exceptional performance and reliability, making them an excellent option for those who value long-term durability.

Budget considerations are also essential when choosing a brand. It’s important to consider the upfront costs, installation costs, and maintenance expenses before making a decision.

Support and Warranty

When it comes to support and warranty, Generac and Kohler both offer excellent options. Generac provides online support and a mobile app to monitor the generator, and their warranty options are hard to beat. Kohler offers excellent customer service and a responsive support team, making them a reliable choice for those who want peace of mind.

Given the importance of support and warranty for long-term ownership, both Generac and Kohler are excellent choices.


In conclusion, both Generac and Kohler offer reliable and high-quality whole house generators. The decision of which brand to choose ultimately depends on the specific needs of the homeowner. If durability and exceptional performance are a priority, Kohler is an excellent choice. However, if ease of use and reliability are essential, Generac is a solid option.

Whole house generators are a valuable investment for homeowners, and the peace of mind they offer during emergencies is priceless. It’s important to consider all features, performance, price, and support options before making a decision. As someone who has relied on a whole house generator during a power outage, I highly recommend investing in one to ensure your home is always powered, even when the grid goes down.

List of 10 generac vs kohler whole house generator

SaleBestseller No. 1
Generac 6485 Scheduled Maintenance Kit for 20kW and 22kW Standby Generators with 999cc Engine , Black
  • Scheduled maintenance kit is for standby home generators
  • For use with the 20kW and 22kW air cooled standby generators from 2013 or later (999cc engine)
  • Maintenance is recommended every 200-hours or 2-years
  • Includes a pre-cleaner, air filter, oil filter, oil funnel, (2) spark plugs, blue cloth, instruction manual and maintenance sticker
  • Oil must be purchased separately
Bestseller No. 2
Generac 8250 GP2500i 2,500-Watt Gas-Powered Portable Generator, CARB Compliant
  • 50 State Configuration/CSA
  • Compact and Lightweight
  • Makes transportation easy with built-in handle
  • Automatically adjusts engine speeds to save fuel and reduce sound emissions
  • Alert you when unit is low on oil, overloaded or ready-to-use
Bestseller No. 3
Generac 6484 Scheduled Maintenance Kit for Home Standby Generators with 12-18 kW 760cc-990cc Engines
  • Scheduled maintenance kit is for standby home generators
  • Kit for 12-18-Kilowatt 760cc - 990cc Engines
  • Maintenance is recommended every 200-hours or 2-years
  • Includes a pre-cleaner, air filter, oil filter, oil funnel, (2) spark plugs, chamois, instruction manual and preventative maintenance reminder sticker
  • Oil must be purchased separately
SaleBestseller No. 4
CRAFTSMAN C0010250 2,500-Watt Gas Portable Generator 50-State/CARB Compliant, Powered by Generac
  • Built In Handle – Allows you to carry the generator with one hand for easy mobility
  • Easy Start – Start Stop Choke dial makes starting the generator quick and easy
  • Steady Power – Inverter technology produces safe, clean power, ideal for sensitive electronics and tools
  • Ultra Quiet Design – With fully enclosed case
  • Automatic RPM Control – Adjusts engine speed, reducing consumption and sound levels
Bestseller No. 5
Generac 7043 22kW Air Cooled Guardian Series Home Standby Generator with, 200-Amp Transfer Switch
  • Up to whole house protection with the 200 Amp, NEMA 3R (aluminum outdoor enclosure) smart switch
  • Smart, User-friendly controls; Generac evolution controller features a multilingual LCD display that allows you to Monitor Battery status and track maintenance intervals to ensure your generator is always in top operating condition
  • 240 volts supply
  • Receive real time status updates
SaleBestseller No. 6
Generac 76763 GP8000E 8,000-Watt Electric-Start Gas-Powered Portable Generator with COSense, CARB compliant
  • PowerRush ADVANCED TECHNOLOGY – Delivers over 30% more starting capacity allowing you to do more with less.
  • Electric start model for easy operation. (Battery Included)
  • Generac's durable OHV engine with splash lubrication provides a long engine life.
  • Large-capacity steel fuel tank with incorporated fuel gauge provides durability and up to a 11 hour run-time at 50% load.
  • Low-oil level shutdown automatically safeguards generator engine from damage.
Bestseller No. 7
Generac 7118 Parallel Kit for GP2200i and GP2500i Inverter Generator
  • Double your power – connect two inverters together for 2 times the power, up to 3,230 running watts and 4,400 starting watts
  • Connect your loads to the kit's L5-30R twist lock or TT-30R (RV) receptacles
  • Easy access storage compartment in the back keeps power cables safe when not in use
  • Rated 120 VAC amperage is 28.2 when paralleled
Bestseller No. 8
Generac 70422 Home Standby Generator Guardian Series 22/19.5kW Air-Cooled with Wi-Fi, Aluminum
  • 5-Year limited Warranty for automatic standby generators.
  • True power technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, Smooth operation of sensitive electronics and appliances.
  • General G-force engines are purpose-built, pressure-lubricated engine capable of handling the rigors of generator use, resulting in power that’s more reliable and requires less routine maintenance than any competitive engine.
  • Transfer Switch Not Included
Bestseller No. 9
Generac GB1000 1086Wh Portable Battery Power Station Generator with Lithium-Ion NMC, Fast Solar Charging, Wireless Charging Pad for Camping, RV, Indoor/Outdoor Use
  • Clean, Emission-Free, Portable Power – Take it with you wherever you go, indoors or out.
  • Versatile Fast Recharging – Recharge from 0-80% in 2.1 hours from a wall outlet (GB1000). Also supports input from solar, car and generator. Combine charging methods for even faster recharge times.
  • Compact, Durable Design – Lightweight and easy to use with durable enclosure, ergonomic handle, and on-board storage.
  • Wireless Charging Pad – 15W wireless charging for compatible devices.
  • Large Multi-Color 4.7" Display – View charge level, remaining runtime and other key info at-a-glance.
Bestseller No. 10
Generac 76864 GP8000E 8,000-Watt Gas-Powered Portable Generator
  • PowerRush ADVANCED TECHNOLOGY – Delivers over 30% more starting capacity allowing you to do more with less.*
  • Generac's durable OHV engine with splash lubrication provides a long engine life.
  • Large-capacity steel fuel tank with incorporated fuel gauge provides durability and up to a 11 hour run-time at 50% load.

People also ask

What is the difference between a Generac and Kohler whole house generator?

The main difference between a Generac and Kohler whole house generator is the technology used in their engines. Generac uses an air-cooled engine, while Kohler uses a liquid-cooled engine. This affects the generator’s energy efficiency, power output, and overall lifespan.

Which is better, Generac or Kohler?

It’s difficult to say which is better, as both Generac and Kohler offer high-quality whole house generators. Your choice will depend on your specific needs and preferences. Consider factors such as power output, fuel efficiency, noise levels, and overall cost when comparing Generac and Kohler models.

Are Generac generators more affordable than Kohler?

Generac generators typically cost less than Kohler generators. This is because Generac uses less-expensive air-cooled engines, which are easier and less costly to maintain. However, Kohler generators may have a longer lifespan due to their liquid-cooled engines.

Which brand offers better customer support, Generac or Kohler?

Both Generac and Kohler offer excellent customer support, so it’s difficult to say which is better. Generac has a larger network of authorized dealers and service centers, which can make it easier to find help when you need repairs or maintenance. However, Kohler’s customer support is highly regarded for its responsiveness and effectiveness.

What is the warranty on Generac and Kohler whole house generators?

Generac and Kohler both offer warranties on their whole house generators. Generac typically offers a 2-5 year warranty, depending on the specific model, while Kohler offers a 3-5 year warranty. It’s important to read the fine print of the warranty, as each company may have different coverage and exclusions.

Do Generac and Kohler whole house generators require professional installation?

Yes, both Generac and Kohler whole house generators require professional installation. These generators are large and complex machines that require careful set-up, wiring, and connection to your home’s electrical system. It’s important to choose a qualified installer with experience in whole house generator installation.