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Energy-Efficient Replacement Windows


The multiple-glazed layers of energy-efficient windows keep the cold air at bay and the warm air inside so you can enjoy the day in comfort. Energy-efficient windows will save you money today, tomorrow, and for decades to come. They will also give a modern appearance that will boost your home’s curb appeal and make it the talk of the neighborhood.

What Are the Benefits of Energy-Efficient Windows?

Energy-efficient windows offer numerous advantages for homeowners and businesses. These include:

  • Cost savings. Energy-efficient windows can save you hundreds of dollars a year on your monthly heating and cooling costs.
  • Reduce frost buildup. The layers of energy-efficient glass are protected by a thin layer of metal that helps prevent frost buildup.
  • Prevent drafts. Drafty windows aren’t pleasant, and energy-efficient windows are designed to keep the drafts away.
  • Reduce wear and tear on HVAC systems. Energy-efficient windows help regulate the temperature in your home. This makes it easier for your furnace and air conditioner to maintain a steady and stable temperature. This reduces their need to cycle on and off, which helps reduce wear and tear on components.
  • Protect interior spaces. Energy-efficient windows block up to 75% of UV rays. This helps protect furniture, artwork, carpets, and paint from fading out as the years pass by.

Contact Zen Windows at (615) 777-0746 for more information about installing energy-efficient windows for your home or business. 

Energy-Efficient Window Styles by Zen Windows

Energy-efficient windows come in all shapes and sizes. Some are made of vinyl, others from aluminum. There are white frames and black, and pretty much any color you can imagine. You can choose double or triple panes filled with argon or krypton gas. There are ENERGY STAR® ratings to consider and much more. There are many variables to consider, and we are happy to help you navigate your way through your options to the right decision.

Contact Zen Windows at (615) 777-0746 to learn more about the options available. 

Installing Energy-Efficient Windows

It takes around 30 minutes to an hour to install one new energy-efficient window on your home. The process requires removing the old window and inspecting the frame for warping and other damage that needs repair before installation. Our installation crews thoroughly inspect each frame to ensure the window fits perfectly, and we are firm believers that it is always better to measure twice and cut once.

We can complete most home projects in one or two days. Before commencing work, we will determine the best time to perform the task so that it causes minimal disruption to your routine.

Get a quote today.


Some of the frequently asked questions we receive about energy-efficient Zen Windows include:

What are “IGUs”?

Insulated glass units are two or three window glass panes in one frame, separated by an inert gas, usually argon, krypton, or both. The gases are clear, odorless, and non-toxic. Gas minimizes heat transfer better than air. Spacers are used for distancing the layers and allowing for thermal expansion.

What is most energy-efficient: aluminum, vinyl, or wood windows?

Aluminum windows are the least energy-efficient. Wood is most energy-efficient but will deteriorate faster over time and require more maintenance. Composite and fiberglass frames are other options that are more durable than wood.

Vinyl windows are affordable, durable, and low maintenance. Advantages of vinyl replacement windows are:

  • They are architecturally diverse.
  • They have a better ROI (return on investment).
  • They are easier to maintain.
  • They have lower installation costs.
  • There are many more styles available.
  • They are more affordable.

What is “low-E”?

Low-emissivity coatings are usually applied to windows during manufacturing. The invisible layer on windows provides insulation and controls heat transfer. Windows with low-E coatings may cost 10%-15% more, but they reduce your energy loss by 30%-50%. This makes them a good investment.

Which window styles are most energy-efficient?

There’s a lot of disagreement among window professionals about which type of windows are the most energy-efficient. Some say picture windows because there’s only one pane of glass; less opportunity for air leaks. Others say bay and bow or casement windows.

The fact is, no matter how many glass sections your replacement windows have, professionally installed and sealed windows should offer superior insulation during inclement or extreme hot/cold weather and ventilation when you need it. Adding panes increases energy efficiency, so double- and triple-pane windows are best.

You may be planning a home improvement project for now or later this year. You’ll need some idea of the cost so that you can create your budget. That’s just good sense.

Getting a quote for any home improvement project used to be difficult. You’d hear, “We can’t quote until we come out to see…” and then you’d have a face-to-face hard-sell you never wanted. This is why property owners truly appreciate the Zen Windows difference: We offer hassle-free quotes for energy-efficient windows and doors. We’ll partner with you for an affordable, timely home improvement project.

Call (615) 777-0746. No pressure … Just the best energy-efficient replacement windows your home will ever have.