The Window Source of Mankato

Serving the Mankato, MN, Area, Including New Ulm, Owatonna, Faribault, St. Peter, and Le Sueur

The Window Source of Mankato provides the best deals on new and replacement windows, entry and patio doors, and siding to people in Southern Minnesota. Since we are locally owned and are your neighbors, we take pride in offering our devoted customers a delightful, uncomplicated shopping experience from beginning to end.

The Window Source of Mankato

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627 S Front St.
Mankato, MN 56001

Installing New Windows, Siding & More in

  • Mankato
  • North Mankato
  • New Ulm
  • Albert Lea
  • Owatonna
  • Faribault
  • Lake Crystal
  • St. Peter
  • Le Sueur
  • Eagle Lake
  • And More!


Entry Doors

Patio Doors

  • Picture Window Replacement and Installation
  • Awning Window Installation and Repair
  • Casement Window Installation and Repair
  • Double Hung Window Installation Estimates
  • Double Hung Window Repair and Installation
  • New, Heavy Duty Entry Door Replacement and Installation
  • Sliding Patio Door Repair and Installation

Storm Doors

Sliding Patio Door


Picture Window


Entry Door


Double Hung Window

Awning Window

Casement Window

Double Hung Windows

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Trust Us for New and Replacement Windows in the Mankato Area

Your windows might need to be replaced if they are drafty or lose their seal. For double-hung windows, casement and awning windows, garden windows, and more, we provide energy-efficient options. These are the best methods for preserving your home’s comfort for many years to come.

You can put in a bay window, casement window, garden window, or awning window, depending on your specific needs. Our windows can be custom-made in any size to fit your home exactly, no matter what your overall design vision. Additionally, they will be measured, built, and installed by our skilled experts. 

If you’re unsure about the right windows for your home upgrade, The Window Source of Mankato has in-house designers who can help.

We Also Feature a Full Line of Entry & Patio Doors and Siding

In addition to installing new windows for homes, we also provide a comprehensive range of other home renovation goods. We have magnificent siding options that will give your home structure and beauty, and we can build and install entry doors and sliding patio doors of any size and style.

Our entry and patio doors, and siding alternatives are the ideal choice if you want to offer your house a new appearance, a unique design, and improved style. 

Find Out More at The Window Source of Mankato

The windows and doors from The Window Source are made with sturdy frames, weatherstripping, and premium, energy-efficient components. Our Mankato team offers market-leading installations and solutions that save your home’s energy bills and boost the curb appeal of your property.

Is it time to modernize the external style of your house? Start by setting up an in-home estimate appointment by contacting The Window Source of Mankato. We can give you more information about the products we sell, the set-up procedure, and the guarantee. To begin installing your new windows, doors, or siding, get in touch with us right now.

Real, Local Reviews From Happy Customers

Window Source Q&A

Is it worth it to replace my windows?

Is it worth it to replace my windows?

Older windows are notorious for being leaky and inefficient. At The Window Source, we are constantly improving our technology to be more energy efficient. Installing new windows can realize up to an 80% return on investment when you sell your home. Coupled with the savings you’ll see on your energy bill, the cost of window replacement can often be quickly offset.

How do I know when to replace my windows?

How do I know when to replace my windows?

Anytime you notice damage on your windows, it is a good time to have them looked at by an expert. Damage can be caused by water, insects, and father time. Your old windows ar inefficient, unattractive, and can cause damage to your home, call our experts today!

How much will it cost to replace my windows?

How much will it cost to replace my windows?

The best way to determine the cost is to contract a professional and receive an in-home estimate. At The Window Source, our estimates are FREE to you.

What types of payment methods and financing do you offer?

What types of payment methods and financing do you offer?

We offer a variety of payment methods and financing options. Please contact us to hear our options.

What Warranty do you offer?

What Warranty do you offer?

Lifetime Warranty - All Window Source products come with a limited lifetime warranty. You will have peace of mind knowing that you will only make this investment in your home once. Ask your window consultant for details.