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Top Window Replacement & Installation in Mount Prospect, Illinois Ranked
Upgrading your windows is one of the most impactful home improvements you can make in Mount Prospect. New window installation enhances your home's curb appeal, increases comfort by eliminating drafts, and can significantly reduce your energy bills, especially given our region's distinct seasons. This guide will help you understand the local considerations for window upgrades, from selecting the right style and energy-efficient features to navigating costs, so you can make an informed decision and connect with qualified professionals in your area.

Royalty Windows & Siding
4318 Regency Dr, Glenview, IL 60025
Royalty Windows & Siding is a window replacement company based in Chicago, IL. They specialize in installing high-quality windows, including brands like Marvin and Andersen, with attention to detail and customer communication. Their services cover residential window replacement projects, ensuring minimal disruption during installation.

Authority Window Repair
chicago
Authority Window Repair is a licensed window repair and replacement company based in Chicago, IL. They provide expert services for both residential and commercial properties, including specialized repairs for custom-shaped panes and energy-efficient window installations. Their skilled technicians handle everything from measurement to installation, ensuring precise and durable results.

Argo Glass & Windows - Window Repair & Glass Replacement
317 W Colfax St, Palatine, IL 60067
Argo Glass & Windows - Window Repair & Glass Replacement is a window and door service provider based in Chicago, IL. They specialize in window repair, replacement, and glass services, including sliding patio door repairs and commercial glass maintenance. The company serves both residential and commercial clients, focusing on energy-efficient solutions and local climate considerations.

Express Board Up & Glass Services Inc.
chicago
Express Board Up & Glass Services Inc. is a Chicago-based company specializing in window repair, replacement, and emergency board-up services. They provide 24/7 emergency response for homes and businesses, including glass replacement, roof tarping, temporary fencing, and debris removal. Their team focuses on minimizing damage and restoring properties after accidents or disasters throughout Chicago, Cook County, and the suburbs.

Sliding Door and Window Repair Service Inc
247 N Eric Dr, Palatine, IL 60067
Sliding Door and Window Repair Service Inc is a window and sliding glass door repair company based in Chicago, IL. They provide repair and maintenance services for sliding doors, windows, and other glass products, using high-quality hardware and materials. The company serves residential customers and has over a decade of experience in the industry.
Popular Window Styles for Mount Prospect Homes
Choosing the right window style is about balancing aesthetics, functionality, and ventilation. The architectural character of your home and your personal needs will guide this choice. Here are the most common types installed in the area.
Double-Hung Windows are arguably the most popular choice for Mount Prospect residences 1 2. Their classic design, featuring two vertically sliding sashes, suits a wide range of home styles from historic to modern. Modern double-hungs often include convenient tilt-in mechanisms for easy cleaning from inside your home. They offer versatile ventilation control, allowing you to open both the top and bottom sashes.
Casement Windows are hinged on the side and open outward with a crank. This design provides an unobstructed view and, when closed, creates an exceptionally tight seal against the wind and weather common in Northern Illinois 1 3. This makes them a top contender for energy efficiency. They are ideal for hard-to-reach places and can catch side breezes to funnel fresh air into your home.
Sliding (or Gliding) Windows operate horizontally on a track. They are a sleek, low-profile option perfect for contemporary homes or wider openings like in living rooms or walk-out basements 4. Their simple operation and lack of protruding parts make them a practical and space-saving choice.
Picture Windows are large, fixed panes that do not open. Their primary purpose is to frame an outdoor view and flood a room with natural light 5. Because they are sealed units, they are highly energy-efficient. They are often combined with smaller operable windows (like double-hungs or casements) on either side to create a custom window wall with ventilation.
Bay & Bow Windows project outward from your home's exterior wall, creating a sense of added space and interior shelf room. A bay window typically consists of a large central picture window flanked by two smaller angled windows (often double-hung or casement). A bow window is made of four or more equal-sized windows arranged in a gentle curve 3. Both add significant architectural interest but involve more complex framing and installation.
Awning Windows are hinged at the top and open outward from the bottom. This design allows for ventilation even during light rain. They are commonly used in basements, above doors, or in combination with larger picture windows 1.
Energy Efficiency: A Critical Consideration for Our Climate
Mount Prospect experiences a full range of weather, from humid, hot summers to frigid, windy winters 6. This makes the energy performance of your new windows a crucial investment. Understanding a few key terms will help you select products that keep your home comfortable year-round.
Understanding Ratings: U-Factor and SHGC
- U-Factor measures the rate of heat loss. The lower the number, the better the window insulates. For the climate in Northern Illinois, look for a U-factor of 0.30 or lower to effectively retain heat during winter 7 8.
- Solar Heat Gain Coefficient (SHGC) measures how much solar radiant heat passes through the glass. A lower SHGC blocks more heat, which is beneficial for south- and west-facing windows in summer. A moderate SHGC can be advantageous for north-facing windows to allow for some passive solar heating in winter 9 10.
Essential Energy-Efficient Features
- Double-Pane vs. Triple-Pane Glass: Double-pane insulated glass is the standard, providing excellent insulation with an argon gas fill. Triple-pane glass adds a third layer of glass and two gas-filled spaces, offering superior insulation and noise reduction-a worthwhile upgrade for extreme temperature zones and noisy neighborhoods 11.
- Low-E Coatings: Low-emissivity (Low-E) coatings are microscopic, virtually invisible metal or metallic oxide layers applied to the glass. They reflect infrared light (heat) while allowing visible light to pass through. In winter, they help keep heat inside your home; in summer, they reflect solar heat away, reducing cooling costs 12 7.
- Gas Fills: The space between panes is filled with inert, dense gases like Argon or Krypton instead of air. These gases are poorer conductors of heat than air, slowing heat transfer and improving the window's overall insulating value (U-factor) 13.
- Warm Edge Spacers: The spacer system keeps the glass panes the correct distance apart. Modern "warm edge" spacers are made of less conductive materials like stainless steel or foam, which reduce heat transfer at the edge of the glass and minimize condensation 8.
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Choosing the Right Window Frame Material
The frame material impacts the window's durability, maintenance needs, insulation, and cost. Each has its pros and cons suited to different priorities.
Vinyl Windows are the most popular choice for replacement projects in Mount Prospect. They are affordable, low-maintenance (never need painting), and provide good thermal insulation. Modern vinyl frames are durable and resist warping, chipping, and peeling. They come in a variety of colors and finishes 11.
Fiberglass Windows are extremely strong and durable, with an expansion/contraction rate similar to glass. This makes them highly resistant to weather extremes and exceptionally energy-efficient. They can be painted, offering more aesthetic flexibility than vinyl, but typically come at a higher price point.
Wood Windows offer timeless beauty and excellent natural insulation. They are often chosen for historic homes or where a classic aesthetic is desired. The downside is their higher maintenance requirement, as they need to be protected from moisture with regular painting or staining. Many homeowners opt for wood-clad windows, which have a wood interior for aesthetics and a low-maintenance aluminum or vinyl exterior 3.
Aluminum Windows are very strong, slim, and modern-looking. However, bare aluminum is a highly conductive material, making it a poor insulator (high U-factor). They are more common in commercial buildings or in warmer climates unless they include a thermal break-a plastic strip between the interior and exterior of the frame that reduces heat transfer.
Understanding Window Replacement Costs in Mount Prospect
The cost of a window installation project varies widely based on the factors discussed: style, material, glass packages, and the number of windows. Installation complexity (full-frame vs. retrofit) and any necessary structural repairs also affect the final price.
Here is a general overview of approximate installed costs per window for different styles, using standard vinyl construction as a baseline 13:
| Window Type | Approximate Cost Per Window (Installed) |
|---|---|
| Double Hung | $700 - $1,505 |
| Casement | $1,050 - $1,695 |
| Sliding | $650 - $1,195 |
| Picture | $650 - $1,200 |
| Bay/Bow | $1,500 - $4,500+ |
For a full-home project involving 10-15 standard vinyl double-hung windows, homeowners in Mount Prospect can expect a total project cost generally ranging from $6,000 to $16,000 1 14. Upgrading to features like triple-pane glass, fiberglass frames, or custom shapes will increase this range. It is always wise to budget an additional 7-15% for potential unforeseen issues, such as rotted wood framing discovered during installation, especially in older homes 13.
Full-Frame vs. Retrofit Installation:
- Retrofit (Pocket) Installation: The new window is installed into the existing frame. This is less invasive, faster, and more affordable, but it slightly reduces the glass area and doesn't address issues with the old frame.
- Full-Frame Installation: The entire window unit, including the frame and trim, is removed down to the studs. This allows for a thorough inspection and repair of the rough opening, ensures a perfect fit and seal, and is the best method when there is existing damage or when changing window sizes/styles.
The Installation Process and What to Expect
A professional installation is just as important as the quality of the windows themselves. A proper install ensures performance, longevity, and warranty protection.
- Initial Consultation & Measurement: A qualified installer will visit your home to discuss your needs, take precise measurements of every opening, and assess the condition of the existing frames and siding.
- Product Selection & Ordering: Based on your consultation, you'll select the specific products. The windows are then custom-manufactured to fit your openings, which can take several weeks.
- Preparation & Removal: On installation day, the work area inside and outside will be protected. Old windows are carefully removed.
- Inspection & Repair: The rough opening is inspected for water damage, rot, or insect infestation. Any necessary repairs are made to create a solid, level, and square base for the new window.
- Installation & Sealing: The new window is set, leveled, and shimmed. It is then fastened securely into the opening. High-performance flashing tape and sealants are applied around the exterior to create a continuous water-resistant barrier, which is critical for preventing leaks 15.
- Insulation & Finishing: The gaps between the window frame and the rough opening are insulated with low-expansion spray foam. Interior trim is installed, and the operation of the window is tested.
- Cleanup & Final Walkthrough: The crew cleans up the work area, and you will do a final inspection to ensure you are satisfied with the installation and operation.
Frequently asked questions
Sources
Footnotes
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Window Installation and Replacement in Mount Prospect IL - https://argowindowrepair.com/illinois/window-repair-mount-prospect/window-replacement-mount-prospect ↩ ↩2 ↩3 ↩4
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Residential Window Types We Install In The Chicagoland Area - https://apexext.com/residential-windows-doors/residential-window-types-chicagoland/ ↩
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Replacement Windows | Mt. Prospect, IL - Chicagoland Builders Inc - http://www.chicagolb.com/mt-prospect.html ↩ ↩2 ↩3
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Professional Door & Window Replacement in Mount Prospect, IL - https://nextdoorandwindow.com/mount-prospect/ ↩
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What Are The Best Window Styles For Your Home? - Joyce Manufacturing - https://www.joycemfg.com/what-are-the-best-window-styles-for-your-home/ ↩
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Why Fall Is the Perfect Season for Window Replacements in ... - https://www.advancedroofing.biz/blog/windows/why-fall-is-the-perfect-season-for-window-replacements-in-illinois/ ↩
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A Look at Energy-Efficient Windows for Chicago's Climate - https://www.shschi.com/blog/a-look-at-energy-efficient-windows-for-chicagos-climate/ ↩ ↩2
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Fact Sheet: Selecting Energy Efficient Windows in Illinois - https://smartenergy-form.arch.illinois.edu/pdf/Archive/Selecting%20Energy%20Efficient%20Windows%20in%20Illinois.pdf ↩ ↩2
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Must Have Window Features for Challenging Climates - https://www.trueviewglass.com/must-have-window-features-for-hot-moderate-and-cold-climates/ ↩
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Picking The Best Windows For Your Climate - Carolyn Harbolt - https://charbolt.cbspokane.com/client-articles/2023/04/06/picking-the-best-windows-for-your-climate ↩
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Window Installation Illinois: Ultimate Guide 2025 - https://perfectwindowsandsiding.com/window-installation-illinois-complete-guide/ ↩ ↩2
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How Much Does It Cost to Replace Windows in 2025? - Cobex - https://cobexcg.com/how-much-does-it-cost-to-replace-windows/ ↩
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Cost to Replace Windows 2025: Ultimate Savings - Smithrock Roofing - https://smithrock-roofing.com/cost-to-replace-windows/ ↩ ↩2 ↩3
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Window Replacement Cost & Pricing in Illinois (2025) - https://modernize.com/windows/replacement-cost-calculator/illinois ↩
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Blog - https://aspenexterior.com/blog/ ↩