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What to Look for When Buying Replacement Windows

Homeowners do a lot of research prior to buying replacement windows. After all, it’s an investment that most homeowners only want to make once in their lifetime. If you’re doing research, check out our tips for what to look for when buying replacement windows.

How to Shop for Replacement Windows

There are a few things you should take into consideration when buying windows, including: type, material, panes, U-value and energy efficiency.  

Choose your Style

Frame materials, glazing options and energy efficiency are all important elements, but first you’ll need to consider the window’s basic operating style. Double-hung is the most popular type of window you see in many homes, especially traditional homes. This window consists of two sashes to maneuver as opposed to one moveable sash like the single-hung window. This functionality allows for either the top or bottom half of the window to be open at one time . Double hung windows have a distinct advantage over other models when it comes time to clean them, because the top and bottom sashes are moveable, meaning that you don’t have to go outside to finish the job. Other options include single-hung, casement, awning, bay, bow, sliding, and tilt and turn. 


Consider Window Frame Materials

Window frames come in a number of different materials including wood, vinyl, aluminum, fiberglass and composite. Vinyl windows are the most popular and considered the most affordable and low-maintenance option in today’s market. Fiberglass windows are newer than vinyl and are gaining popularity.

Look at Window U-Value

If energy efficiency is important for your new windows, the glass (single- or double-pane or low-E) and the U-value are details you’ll want to take into consideration. Most homeowners prefer double-pane window treatments. Although they cost more up-front than single-pane windows because they use twice the materials, the insulation and strength they offer make them a much better buy. In fact, with double-pane windows, you won’t have to use your air conditioner as often, and your heater can be set at a lower temperature because the air inside your home will be more consistent.

Pro tip: Consider energy savings and a window’s life span when considering what to look for when buying replacement windows.

Low-E, or low-emissivity, glass was created to minimize the amount of infrared and ultraviolet light that comes through your glass without minimizing the amount of light that enters your home. The low-E coatings keep the temperature in your home consistent by reflecting the interior temperatures back inside.

When selecting windows with superior insulation in mind, remember that a window’s U-value is an important consideration.  A window with a high U-value provides less resistance to heat flow and does not insulate as well as a product with a low U-value.

Let’s Get Started!

If you’re ready to take the next step, learn more about our residential glass products , stop into our showroom to talk with our team or give us a call today to get started on your project.


Call Us Today! 1.800.236.7887


I just spoke with Dave V. by phone, but wanted to be sure that my appreciation did not go unnoticed. Jeff and Mark of your residential division just left my home after spending two days replacing several storm damaged windows.  I am calling and writing to express my deep appreciation for their professionalism, expertise and spirit.  They are both an asset to your company.  With a positive experience like the one I have experienced, you can bet that if there is additional work that I need done, Omni will be my first call.   ~ Thom N. Oshkosh, WI

“Mark and Brandon are going great guns here. Thanks for sending these gentlemen to do our installation. I have a GREAT deal of confidence in them and fully expect the entire job to go as well as it has to this point.”-Jim

“Your residential installer was wonderful and did an amazing job.”-Kyle, Green Lake

“Both Steve Bridwell & Mark Willems did a great job of helping me with my patio door after my home invasion.”-Kathy, Oshkosh

I wanted you to know that Mark Willems our installer did a FANTASTIC job. He is very professional, knowledgeable and personable. He represents your company well. P.S. We have made several referrals based on our experience! -Mike & Mary Kay, Winneconne

My recent experience with Omni Glass & Paint was fantastic. I had been waiting 3 months for a part for our front door from another glass company in Oshkosh. I reached out to Omni Glass & Paint; they came to look at the door, found the part and installed the part in less than a day. The door works perfect now. I was so impressed with Omni’s work and would highly recommend them to anyone. – Matt Bakalars, Fox Valley Savings Bank

Mark and Jeff installed windows in our home in Oshkosh.  We were extremely happy with their work but more than that, they went above and beyond to install those windows and were extremely friendly and informative along the way.  They even found an issue with rotten wood that the workers who installed our siding just covered up…so we are very grateful. Because of their services we would highly recommend Omni Glass to everyone.  And the windows are outstanding too!   ~ Roxanne D. – Oshkosh, WI

I just called to compliment the man who installed my new shower door.  Jeff was very pleasant, he did an AWESOME job, everything is perfect, and he left the place neater than when he arrived!  Everything lines up, everything fits, nothing leaks! I am so happy with the job he did!   ~ Nancy, Oshkosh, WI

I just wanted to congratulate the great crew we had working at my home, they were fantastic.  I am very, very pleased with their knowledge and abilities, they were the most impressive group of people I have ever worked with. Mark was especially helpful, he was absolutely wonderful to work with. Thanks again!   ~ Rick, P

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