​​​​Grimms Replacement Window Company

Whether you're tired of feeling cold drafts when sitting in front of your windows or you're looking for a way to update your home's style, replacement windows are a great investment in your home. Make sure you get the best performance by choosing the leading Grimms window contractors at Mad City Windows

Here's the deal. 

We've been helping homeowners add energy-efficiency, beauty, and value to their homes through comprehensive home improvement solutions since 1998, giving us the skills and expertise you can count on to deliver first-rate results that last for decades. 

You can count on us for:
  • Seamless Installation by Skilled Window Contractors
  • Innovative Energy-Efficient Windows
  • Durable Vinyl Windows

Get a Perfect Installation from Experienced Window Contractors

While we're proud to offer some of the best products from top-rated brands in the industry, to get maximum performance from any window you need skilled and experienced window contractors. Our experts receive extensive training and are equipped with superior resources to ensure every window is perfectly fitted and installed to your exact specifications. 

Save Money with Energy-Efficient Windows

One of the biggest culprits of energy loss in homes is outdated and inefficient windows At Mad City Windows, we offer innovative EcoSky windows to help homeowners reduce energy loss and save money on energy bills. Our EcoSky energy-efficient windows have impressive features, some of which include:
  • Four-Point Welding
  • Sky Mirror Technology
  • Gas-Filled Chambers
  • Low-E Glazing
  • Durable Composite Frames

Get Low-Maintenance Beauty with Vinyl Windows

If you're looking for a superior style without the need for constant maintenance, our selection of vinyl windows is perfect for you. We feature an impressive number of styles and with custom design options, you're sure to find the perfect window for your Grimms home. Some of our options include:

Grab an Accurate Estimate for Your Grimms Window Replacement

Ready to learn more about the benefits of choosing Mad City Windows for your window replacement in Green Bay? We'd love to tell you more about our quality windows and how they can improve your home, so call today. You can also request additional information and a free, no-obligation project estimate by taking a moment to complete our online quote form.

Mad City Windows' Award-Winning Services

Enjoy expert home renovations—and a level of service that is becoming harder to find.

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Quality Workmanship
Family Owned
Award Winning
Lifetime Warranties

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60-60-60 Sale!

60% Off Installation
60 Months No Interest
$60 Gift Card
& First 50 Customers Get a Vacation Voucher