Replacing your windows is a big decision, and we’re here to make it easier. To help you feel confident in your choice, we’ve put together the top 10 most frequently asked questions about window replacement—so you have the answers you need before you buy!
Q1. What Are the Signs That You Need Window Replacement?
: Common signs include drafts, difficulty opening or closing, condensation between panes, increased energy bills, and visible damage such as warping or rotting frames. If your windows are over 20 years old, replacing them can improve energy efficiency and enhance your home’s appearance.
Q2. What Are the Average Costs of Window Replacement?
: The cost of window replacement varies based on window type, material, and home structure. For residential homes, replacement costs range from $300 to $1,200 per window. High-end or custom windows may cost more, while full-home replacements can total several thousand dollars. For mid- to high-rise condominiums, costs range from $500 to $2,000 per window due to specific structural and performance requirements.
Q3. What Are the Benefits of Window Replacement?
:Modern windows are significantly more advanced than those made 20 years ago. They reduce outside noise, block harmful UV rays, and provide better temperature control—keeping your home warmer in winter and cooler in summer. Additionally, they enhance home security and interior aesthetics. Window replacements can also increase property value, with homeowners recouping 67-72% of their investment when selling their home (National Association of Realtors).
Q4. What Is the Window Replacement Process & Timeline?
: The process includes an initial consultation, home measurement, ordering, and installation. It typically takes a few weeks to months, depending on product availability. Installation itself usually takes a few hours per window. With 30 years of experience in high-rise condominium window replacements, OneSource completes full-home installations in just 1-2 days. If you would like to know more about window installation process, learn more here.
Q5. What Is the Window Warranty?
: Window product warranties vary by manufacturer, often covering defects, materials, and energy efficiency for a lifetime. We recommend checking the manufacturer’s website or consulting with your sales representative for specific details. OneSource provides a lifetime labor warranty for workmanship, ensuring long-term quality and customer satisfaction. Learn more bout the window warranty.
Q6. How Can I Find the Best Windows for My Home?
: Consider your climate, home style, budget, and energy efficiency needs when choosing new windows. Before your consultation, ask yourself: What type of window best suits my home—single-hung, double-hung, sliding, or casement? What features matter most—sound reduction, insulation, or security? Answering these questions will help professionals recommend the best windows for your needs.
If you live in a condominium, replacing your windows may require meeting specific architectural and structural requirements, as well as obtaining board approval before placing your order. OneSource is approved by more than 50 condominiums across Washington, D.C., Maryland, and Virginia and could guide you every step to find and get approved on your new windows.
Your satisfaction is our top priority. With 30 years of industry experience and a strong network of manufacturers, OneSource ensures a smooth, hassle-free window replacement process.
Q7. What Is Low-E Glass?
: Low-E (low emissivity) glass has a special coating that minimizes heat transfer while allowing natural light to pass through. It reflects infrared heat, keeping your home warmer in winter and cooler in summer. Additionally, it blocks harmful UV rays, reducing fading on furniture and flooring.
Q8. What is U-value?
: U-value (also known as thermal transmittance) measures how well a window, door, or other building component prevents heat from escaping. It is expressed in watts per square meter per degree Kelvin (W/m²K). A lower U-value means better insulation, as it indicates less heat loss.
For example:
Single-pane windows usually have a high U-value, meaning they lose more heat.
Double- or triple-pane windows with gas fills and low-emissivity (Low-E) coatings have a lower U-value, providing better energy efficiency.
U-value is an important factor when selecting windows for energy-efficient buildings, as it affects heating and cooling costs.
: Modern windows reduce noise through multiple panes of glass, insulating gas fills (like argon or krypton), and laminated glass. These features block sound waves, minimizing outside noise from traffic, neighbors, or construction. Proper sealing and high-quality frame materials also contribute to soundproofing. Learn more about the mechanisms of how windows reduce outside noise here.
Q10. How Do Windows Provide Better Insulation?
: Energy-efficient windows improve insulation by using double or triple panes filled with insulating gas, Low-E coatings, and high-quality weatherstripping. These features reduce heat loss in winter and prevent heat gain in summer, helping to maintain a comfortable indoor temperature while lowering energy costs. Learn more about the role of windows in home insulation here.
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