Energy Wise Mfg - Manufacture / Wholesale
Here at Energy Wise Manufacturing, we manufacture and wholesale double glazed interior storm windows. We offer you affordable and wise options to replacing your existing windows. Let’s face it... sending your windows to a landfill is a far less environmentally friendly alternative!

Experts Agree
Most experts agree that more energy is consumed manufacturing new windows than is saved over the course of their lifetimes. Also, when your home or business was built the windows that were installed were architecturally designed to complement your structure. 

Original Windows
The originals were more than likely manufactured using old growth lumber. The value of this can’t be overstated. Let us help you save your windows and remedy any issues that you are experiencing such as drafts, condensation, outside noise, cold areas near windows and high utility costs. 

Double Glazed Windows
Our double glazed interior storm inserts are manufactured using an aluminum framework that is ⅜” thick, 15/16” wide, powder coated and painted with 4 different color options. The glazing is a very special 4.3 Mil. thick optically crystal clear film that is UV stabilized, rated at -33 degrees and shatterproof. 

Double Glaze Window Process
The double glazing is the secret to you experiencing true thermal efficiency at near energy star levels. It is creating two new dead air pockets, which is the ultimate window insulation. The first dead air space is from your window glass to the interior storm window and the second dead air space is ⅜” gap space between the two layers of glazing film. 

Reasons to Choose Our Double Glazed Windows...
  • Our DOUBLE glazing with a 3/8" dead air space is the key to true thermal efficiency

  • Slashes heating and cooling costs

  • Eliminates or greatly reduces condensation

  • Drafts and cold spots in your rooms are gone

  • Reduces outside noises

  • Much less infiltration of dust and dirt

  • Immediately brings your existing windows to near Energy Star levels

  • Most sizes are readily available

  • Out of square windows are not a problem

  • Reusable for many years due to our impressive crystal clear durable glazing film

  • Installs and removes in minutes without the need of tools or fasteners

  • Several frame color options

Compression Fit
Our inserts are compression fit so you'll need no tools to install or remove. For years we have been helping folks with their window woes, so let us help you! We are open seven days a week. We offer discounted shipping solutions and pricing plans and the highest quality double glazed windows on the market.

Contact Us
Please call 563-542-2134 or e-mail General Manager Eugene Mueller with any questions.
Energy Wise Mfg
Eugene Mueller G.M.
208 S. Judgement
Shullsburg, WI 53586
Ph: 563.542.2134
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