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Generator Size Calculator

Welcome to Osburn Services, your trusted partner in identifying the perfect generator size for your Michigan home or business. Understanding the right size for your generator is crucial for efficiency and reliability. Our guide includes links to calculators for Cummins, Generac, Kohler, and Briggs & Stratton. This will help you find the best option for your needs.

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Generator Size Calculator

Why Generator Sizing Matters

Understanding the importance of correct generator sizing is key to ensuring uninterrupted power supply and efficiency. A generator that is too small won't provide enough power. A generator that is too large can cost more and waste fuel. Osburn Services is dedicated to helping you find the balance for optimal performance.

How To Use a Generator Size Calculator

We provide easy access to sizing calculators for leading brands: Cummins, Generac, Kohler, and Briggs & Stratton. Follow their easy step-by-step guide to enter your power needs. The calculators will recommend the best generator size for you.

Cummins

During an emergency is not the time to discover your home's wattage needs. This generator size calculator helps you think about your needs. It also helps you decide what to power during a home outage.

cummins sizing

Generac

This easy Home Standby Sizing Calculator will give you 3 generator options to meet your needs. It also includes estimated installation costs and financing options. Just enter your zip code and how much of your home you want to back up. You can choose to back up all of it or just selected appliances. The calculator will handle the rest!

generac sizing

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Briggs & Stratton

This easy Home Standby Sizing Tool will suggest up to 3 generator options for you. It also includes estimated installation costs and financing options. Just enter your zip code and choose whether you want to back up your whole home or just essential appliances. The tool does the rest!

Briggs & Stratton Sizing

Kohler

Please consider the output of this program to be an approximation. As always, the best way to determine your specific power needs is to consult a local KOHLER Generators dealer. The dealer will analyze the actual electrical load for your home, then specify and install your generator.

Kohler Sizing

FAQ's

If your generator is too small, it may overload, shut down, or even become damaged. If it’s too large, you might end up paying more than necessary — both upfront and in fuel costs. That’s why using our generator sizing calculator and getting expert guidance is so important.

Choosing the right size generator ensures you have enough power for the essentials — without overloading the unit or overspending. A properly sized generator keeps your home or business running smoothly during an outage.

That depends on what you need to power. Portable generators are good for some basic needs. However, for full-home or business backup, a standby generator is a better choice. Our calculator helps you compare your needs.

The calculators on this page offer a good starting point. However, we always suggest talking to our team to confirm the sizing. This is especially important for larger homes, businesses, or complex power needs.

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Blog Post

Does Adding a Generator Add Value to Your Home?

A generator helps keep your home running well. It can also raise your property’s value. This makes it a smart long-term investment for homeowners.

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Power Up Today with Osburn

Osburn Services takes pride in being Michigan's go-to provider of residential generator solutions. Our commitment to quality, reliability, and customer satisfaction sets us apart in the industry. With years of experience serving the Michigan community, we understand the unique power needs of our customers.

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In memory of Chris Leonard — a valued teammate, a trusted friend, and a part of the Osburn family.

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We aim to save you time and money. We do this by using our experience, high-quality parts, and great service.

Service Area

We service all of Michigan including Oakland County, Livingston County, Milford, Highland, South Lyon, Walled Lake, Brighton, Howell, Novi, Northville, Walled Lake, Wolverine Lake, Wixom , West Bloomfield, Waterford , Farmington, Ann Arbor, Clarkston, Fenton, Lansing, Harbor Springs, Cheboygan, Charlevoix, Grand Rapids, Petoskey, Alpena, Indian River, Interlochen, Elk Rapids, Traverse City, Boyne City, Glen Arbor, Frankfort, Hubbard Lake, where you live!