EcoSmart windows are custom built to fit into the existing openings of your home. No need to remove siding, no need to remove the interior trim, they are built for each and every opening in your home to fit perfectly.

EcoSmart windows feature a Lifetime Warranty on the main frame and sash frames, including all moving parts with an Unprecedented Lifetime Seal Failure and Glass Breakage Warranty!

Compare that to the Renewal By Anderson Warranty and that is just one of the differences!

EcoSmart windows come in every style, bays and bow windows, single, double, triple and quad casements, double hung windows and sliders and we even have special shapes and designer glass options. The EcoSmart Patio doors make even the biggest opening in your home energy efficient.

EcoSmart windows come with plenty of interior and exterior color and wood grain options, including glass pack options from R-4.2, R-5, R-7.6 and R-10. Add that into our fully insulated window and sash frames delivering up to an R-24 and you’ll fell the difference and save energy.

Midwest Construction has been a Great Lakes window Dealer since 1984 and loves the fact Great Lakes is always researching the best products and manufacturing practices to deliver our homeowners a product that will stand the test of time and deliver energy savings, maintenance freedom for years to come with each and every homeowner who lives there.

Matt Kloberdanz worked with the Polk City, Iowa couple for windows, patios doors and Everlast Advanced Composite Siding.

EcoSmart windows Installed By Midwest Construction:

Patio Doors - Single and Triple Casement windows

Double Casements


Des Moines and Polk City Window, siding, sunroom and Door Company

As a premier Polk City and Des Moines window and door company, Midwest Construction has two showrooms – one in Mason City and one in Grimes – which feature full-size sun rooms and fully functionally window displays for your education...

Our goal is to ensure that your replacement windows, vinyl siding, doors, gutters and/or sunroom project is executed without a hitch. When you work with our trained professional, you get the peace-of-mind and comfort that comes with quality, energy-efficient products.

We'll guide you through the entire process from beginning to end – ensuring a smooth and streamlined affair...

Call Midwest Construction today for a free consultation and no-obligation quote, or fill out a quote form to schedule a no-charge estimate!

800-925-6664 or www.mwcinc.com