Energy Efficient Window Coverings – What to Look for

Our previous articles discussed window and glass efficiencies, warranties, and the top reasons to replace windows. This article will expand upon these topics and begin to cover some of the window coverings which will be able to reduce energy usage associated with heating and cooling, and make your home more comfortable year round. 

Most types of window treatments will result in energy savings, but the exact savings will depend on the type of attachment, the season, the climate, and how the attachment is used.

In addition to the window treatments discussed below, storm windows with low-e coatings are effective at improving thermal performance of windows and reducing solar heat gain.

Operable Window Coverings

Operable window coverings are by far the most popular choice in window treatments because they offer the flexibility to choose from having the window coverings open or closed.  This allows the homeowner to decide their level of privacy, maximize natural light, and to take advantage of solar heat benefits. 

Most common operable window coverings: shades, blinds, curtains, drapes, shutters

Interior Window Treatments

Window treatments come in a variety of different form and shape factors. This is primarily due to personalization – a great deal of personal touch can be applied when choosing these treatments.

Insulated Cellular Shades

Cellular shades are very common, but most people know them by how they look.

Insulated Cellular Shade Options and Variety

Insulated cellular shades are made of a pleated material designed to fold up like an accordion when they are fully open at the top of the window. These are beneficial when closed because the air inside the curtains acts as an insulation layer which can reduce heating costs in the winter. 

Insulated cellular shades typically offer the highest level of comfort, privacy, and energy efficiency measured by R-value 

Some cellular shades include the option of automation, allowing the blinds to open and close on a set schedule. The schedule can be seasonally optimized to reduce heating and cooling loads while maximizing natural light and home comfort.

Window Quilts

Window quilts have a sheet of quilted or knit material that can be opened by rolling and closed by unrolling. They typically fit snug against the trim, either on tracks, with velcro, or another mechanical attachment at the top of the window frame.

Their tight fit offers R-value increases similar to cellular shades, and they typically cost less. 


Window blinds—vertical or horizontal slat-type—are more effective at reducing summer heat gain than winter heat loss.

Because of the numerous openings between the slats of blinds, it’s difficult to control heat loss through interior window blinds, but the slats offer flexibility in the summer. Unlike shades, you can adjust the slats to control glare, light, and solar heat gain.

When completely closed and lowered on a sunny window, highly reflective blinds can reduce heat gain. Horizontal slat-type blinds can also be adjusted to block and reflect direct sunlight onto a light-colored ceiling. A light-colored ceiling will diffuse the light without much heat or glare, while allowing you to take additional advantage of natural daylighting.

Curtains and Drapes

Curtains are fabric interior attachments that are sized to fit the window, while drapes reach all the way to the floor.

A drapery’s ability to reduce heat loss and gain depends on several factors, including fabric type (closed or open weave) and color. With such a wide variety of draperies available, it’s difficult to generalize about their energy performance.

The most efficient curtain and drape combination is with a two layers. Two draperies hung together will create a tighter air space than just one drapery. 

Why Should I Install New Windows?

Install New Windows Or Miss Out On These Benefits

We’ve seen it a thousand times, a homeowner is looking to squeeze every last ounce of life from their existing windows and glass. Well, what most people don’t realize is how much an old, broken, or drafty window costs.  Sure a window is designed with a function in mind, like letting light in or providing you with a nice view when you do your dishes, but what you don’t realize is that it is also your first layer of protection from the outdoors.

Below is an itemized list which describes why you should be looking to replace your home windows.

Energy Rebates

No one likes paying taxes, but everyone loves a tax break! Depending on the state you live in, you may be eligible for a tax rebate or incentive when you install a new and energy efficient windows.  Not only would the government give you money to make your house look better it can even decrease your monthly heating and cooling bill.

Decreased Utility Cost

In addition to the aforementioned energy rebates, new windows or more efficent glass panes can drop your heating bill exponentially especially in the frigid Midwestern winters. This added energy efficiency comes from the windows being a better insulator than your old windows. The energy efficiency grade depends heavily on the type of window you are looking to have installed, as well as the side of the house it is on.

Environmental Benefits

Lets face it, we all get tired of the tree huggers telling you we need to save the environment, but let’s also be realistic. If we can reduce the amount of gas you burn in the winter because your new windows are insulating your home from the harsh environment, we call that two birds with one stone.

Leaky or Cracked Windows

I’ve seen it first hand. Many homeowner or renters will go entire seasons with broken panes of glass letting huge drafts of cold air in during the winter or all the cool air out during the summer. Don’t let this happen!  Replace your old broken or leaky windows with something new and economical.

Ease of use

If you have a double hung window that won’t even open up or down, why have one there at all? If your windows are broken or hard to open and even harder to close, look no further than replacing that old thing. Put something new in that windows place that will really make your neighbors jealous.

Beautification Factor

We at SlugWire aren’t sure if Beautification is a real word or not but we are going to go with it.  Put in a new window that you can be proud of.

Cost the Real Fear Factor

Yeah yeah, windows are expensive, but honestly would you rather be stuck with something that doesn’t work, doesn’t insulate your home, increases your heating and cooling costs, or is just plain ugly? All across the web, people are correctly stating that an improvement to your home is an investment that will pay off. Especially when it is something on the exterior, where people form a first impression.

Replace your old crumbling windows today with something that you will be proud of and something that will pay off for you.

Good Luck,