Serving Chicago, IL and surrounding areas

Replace Two Windows with One: 2026 Scale & Light Trends

REPLACE TWO WINDOWS WITH ONE

Replacing two windows with one is one of the biggest window replacement trends for 2026—especially across Chicago and the Chicagoland suburbs where homeowners want more natural light, cleaner views, and a more modern exterior. At Revived Exteriors, we’re seeing more families in Arlington Heights, Palatine, Mount Prospect, and nearby neighborhoods choose a single large window (slider, picture, or architectural casement) to remove the center obstruction and create a brighter, more open room.

What does “replacing two windows with one” mean? It typically involves removing the center post (mullion area) between two side-by-side windows, reframing the opening if needed, and installing one oversized unit. This 2026 trend supports biophilic design (more sky, more trees, more daylight), while modern high-performance glass helps maintain comfort—even through Chicago winters and summer humidity.

Quick Answer (2026 Window Trend)
Replacing two windows with one creates a larger, uninterrupted glass area that boosts natural light, improves the view, and modernizes curb appeal. For Chicago-area homes, the key is confirming whether the center section is structural and choosing energy-efficient glazing so comfort stays consistent year-round.

1. Why 2026 Is the Year of the “Grand-Scale” Window (Chicago Edition)

For years, window design was limited by insulation performance and glass strength—so multiple smaller windows were common. In 2026, those limitations matter far less. Homeowners want a single, bold opening that feels like a “living frame” of the backyard. In the Chicago area, this trend is especially popular in kitchens and great rooms where the view and natural light change the feel of the whole home.

The Design Shift: Less Frame, More View

Two windows often create a visual “speed bump” in the middle. By replacing two windows with one, you remove that obstruction and let your eye travel cleanly across the horizon—whether that’s mature trees, a patio, or a backyard you actually want to see.

Replacing two windows with one in Chicago: before two double hung windows, after one slider window

Before: Two double-hung windows with a center obstruction. After: One slider window in the same opening for a cleaner view and more light.

If you want help choosing the right configuration for your home, start here:
replacement windows (Revived Exteriors).

2. Why Chicago Homeowners Are Trading Two Windows for One

The biggest driver is simple: uninterrupted scale. With one oversized unit, light enters as one broad “wash” instead of two separate beams. That can make a room feel larger, brighter, and more modern—without changing the footprint of the home.

Eliminating the Center Obstruction (Mullion Area)

That vertical center area between two windows may be decorative—or it may hide structural framing. In many Chicagoland homes, it’s more than just trim. The right approach starts with confirming what’s load-bearing before changing the opening.

3. Structural Reality Check: Can Your Wall Handle One Large Opening?

This is where professional installation matters. When you replace two windows with one, the center section may contain framing that supports a header above. Creating one wide opening sometimes requires a new header span and precise reframing so the wall remains stable and the new window stays square over time.

When You Need a Header Upgrade

If the center framing is supporting load, you’ll typically need a properly sized header to carry that load across the larger span. This is common in older Chicago-area homes and in rooms with a second story above.

4. Energy Performance in Chicago: Keeping Comfort With More Glass

A common concern is: “If I add more glass, will I feel colder in winter?” With the right window package, the answer is usually no. Modern glazing options, warm-edge spacers, and proper installation keep comfort consistent—while increasing daylight and improving the view.

For baseline guidance on window efficiency and product categories, here’s one helpful reference from ENERGY STAR:
ENERGY STAR residential windows, doors & skylights.

5. Choosing the Right “One Window” Style: Slider vs Picture vs Casement

  • Slider window: Great for wide openings; easy operation; clean look.
  • Picture window: Maximum glass and view; no operation (often paired with operable side windows elsewhere for ventilation).
  • Casement: Strong seal and ventilation; depends on span and layout.

Not sure what fits your opening? We can help you choose a layout that matches your goals and the structure of your wall.
Schedule a window consultation.

6. 2026 Budget Reality: Typical Cost Ranges (Materials + Structural Work)

Replacing two windows with one can be a premium upgrade because the work may include reframing, header changes, and exterior/interior finish work. Below is a simple planning table.

Cost CategoryTypical RangeNotes
Window Unit (frame + glass)$1,200 – $3,500+Varies by size, glazing, and frame material
Structural reframing / header$1,000 – $3,000+Needed if center section is load-bearing
Finish work (inside/outside)$600 – $1,500+Trim, siding/trim returns, drywall/paint touch-ups

7. Resale Value: Why “Light-Filled” Sells Faster in Chicagoland

In many Chicago-suburb markets, buyers consistently react to bright kitchens and open living spaces. A clean, oversized window opening can create a premium “wow” factor—especially when the view is attractive and the finish work looks seamless.

FAQ: Replacing Two Windows With One (Chicago Area)

Will replacing two windows with one reduce ventilation?

It can, depending on the window type. Many homeowners choose a wide slider for ventilation, or pair a large picture window with operable windows elsewhere in the room to keep airflow strong.

Do I need a permit in the Chicago suburbs?

If the project includes structural reframing or header changes, many municipalities require a permit. Rules vary by village/city, so it’s best to confirm for your address and scope.

Will this make my room colder in winter?

With modern glazing and correct installation, comfort is typically maintained. The key is selecting a performance-focused window package and ensuring proper air sealing and flashing details.

Ready to Replace Two Windows With One?

If you’re in Chicago or the surrounding suburbs, Revived Exteriors can help confirm structural requirements, choose the right window style, and deliver a clean, professional finish.

Schedule a Consultation

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5 Warning Signs You Need to Replace Windows | Contractor Guide

warning signs you need to replace windows in Illinois homes

Warning Signs You Need to Replace Windows

Contractor advice for Illinois homeowners based on real inspections, not sales scripts.

If you’re a homeowner in Chicago or the surrounding Illinois suburbs and are noticing warning signs you need to replace windows, you’re not alone. As exterior contractors with over 25 years of experience at Revived Exteriors, we inspect windows every week that homeowners thought were “fine”… until they weren’t.

This guide breaks down the real warning signs it’s time to replace your windows, based on what we see in the field—not sales hype. Some issues are cosmetic. Others are structural, energy-related, or can lead to moisture damage if ignored.

The Short Answer (Contractor Verdict)

If your windows are drafty, fogged, difficult to operate, or causing condensation issues, replacement is usually the smarter long-term decision. Especially in Illinois climates where freeze–thaw cycles, wind, and humidity punish older window systems.

1. Drafts or Temperature Changes — Common Warning Signs You Need to Replace Windows

If you feel cold air in winter or heat radiating through your windows in summer, your window seals or frames are no longer performing.

Many older windows—especially aluminum or early vinyl—lack modern thermal breaks and low-E coatings. Even if the glass looks intact, air infiltration can dramatically increase energy costs.

Contractor insight: If caulking and weatherstripping don’t solve the issue, the window unit itself has failed.

2. Fogging or Moisture Between Glass Panes

Condensation trapped between panes means the insulated glass seal has failed. This cannot be repaired.

Once the seal breaks:

  • Energy efficiency drops sharply
  • Moisture accumulates inside the unit
  • Mold risk increases around frames and drywall

In Illinois homes, we see this most often after 15–20 years.

3. Rising Energy Bills With No Other Explanation

If your HVAC system hasn’t changed but your energy bills keep climbing, your windows may be the culprit.


According to the U.S. Department of Energy, inefficient windows are a major source of heat loss in older homes.

Windows account for up to 30% of residential heat loss. Old or failed windows force furnaces and AC units to work overtime—especially during Midwest winters.

Replacement windows with low-E glass, argon gas, and insulated frames can significantly reduce monthly costs.

4. Windows That Stick, Won’t Lock, or Won’t Stay Open

Difficulty opening or closing windows is more than an inconvenience—it’s often a structural warning sign.

Common causes include:

  • Frame warping from moisture
  • Failed balances or springs
  • Improper original installation

Stuck windows are also a safety issue, especially in bedrooms where egress matters.

5. Visible Rot, Soft Frames, or Water Damage

Wood rot, bubbling paint, or soft spots around window frames usually indicate long-term moisture intrusion.

At this stage, repairs are often temporary and hide deeper problems inside the wall cavity.

Contractor rule: If moisture has reached framing or insulation, replacement—not repair—is the responsible solution.

6. Excessive Condensation on Interior Glass

Interior condensation—especially in winter—signals poor insulation and temperature imbalance.

While occasional condensation can be normal, consistent moisture leads to:

  • Mold growth
  • Trim and drywall damage
  • Indoor air quality issues

Modern windows regulate surface temperature far more effectively.

7. Outdated Windows Hurting Curb Appeal or Resale Value

Buyers notice windows immediately. Old, mismatched, or inefficient windows can reduce perceived home value—even if the rest of the house is updated.

In competitive Illinois markets like Arlington Heights, Naperville, and the North Shore, new windows can:

  • Improve appraisal confidence
  • Increase buyer trust
  • Reduce inspection objections

Repair vs. Replace: The Honest Answer

Repair makes sense when:

  • The window is under 10–12 years old
  • The issue is hardware-related
  • No moisture or seal failure is present

Replacement is the better option when:

  • Multiple windows show the same issues
  • Energy loss is ongoing
  • Frames or seals have failed

Final Contractor Advice

These warning signs you need to replace windows often appear years before homeowners realize how much energy and comfort they’re losing. If you’re seeing more than one of these warning signs, replacing your windows is usually the most cost-effective long-term decision—especially in Illinois climates.

Quality replacement windows improve comfort, reduce energy costs, and eliminate recurring maintenance issues. The key is choosing the right product and ensuring proper installation.

Ready to Talk With a Professional?

At Revived Exteriors, we provide honest window evaluations—not pressure sales. If replacement makes sense, we’ll explain why. If it doesn’t, we’ll tell you that too.


Schedule a window consultation with Revived Exteriors →

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REALTORS IDENTIFY EXTERIOR HOME REMODELING A GOOD RETURN ON INVESTMENT.

A two-story house with a gray exterior, stone accents, and white trim. It has a three-car garage and a well-manicured lawn. The sky is clear and blue, showcasing the impeccable work done by the residential roofing contractor during the recent roof replacement.

WHEN IT COMES TO ANY REMODELING PROJECT, A HOMEOWNER WANTS TO ADD VALUE TO THEIR HOME. THEY SHOULD START WITH THEIR EXTERIOR HOME REMODELING!!

A recent survey of Realtors® found that realtors rated many exterior improvements as among the most valuable home investment projects as part of the “2011-12 Remodeling Cost versus Value Report.”

“This year’s ‘Remodeling Cost vs. Value Report’ shows the value of putting your home’s best façade forward, so to speak,” said National Association of Realtors® (NAR) president Moe Veissi, broker-owner of Veissi & Associates Inc. in Miami. “Inexpensive exterior replacement projects are not only crucial to a home’s regular upkeep, but are also expected to recoup close to 70 percent of costs. This is seems to be a common theme especially when there is a dip in the stock market, people invest in their homes and their exterior home remodeling happens to recoup the best dollar.

Specific exterior home remodeling projects such as siding, window and door replacements Arlington Heights IL are part of regular home maintenance, so many homeowners are already undertaking them. These projects also do not require expensive materials and they have the added bonus of instantly adding curb appeal.”

According to the report, seven of the top 10 most cost-effective projects nationally in terms of value recouped are exterior home remodeling replacement projects. Door replacements were among the top exterior replacement projects. The steel entry door replacement is the least expensive project in the report, costing little more than $1,200 on average and expected to recoup 73 percent of costs.

One window replacement project — upscale vinyl — rounded out the last exterior home remodeling replacement project in the top 10, expected to recoup 69.1 percent of costs.

“Inexpensive exterior replacement projects are not only crucial to a home’s regular upkeep, but are also expected to recoup close to 70 percent of costs.

The “2011-12 Remodeling Cost vs. Value Report” compares construction costs with resale values for 35 midrange and upscale remodeling projects comprising additions, remodels and replacements in 80 markets across the country. Data are grouped in nine U.S. regions, following the divisions established by the U.S. Census Bureau.

Overall, Realtors® estimated that homeowners would recoup an average of 57.7 percent of their investment in 35 different improvement projects, down from an average of 60 percent last year. Due to a weak economy, high unemployment in the construction industry and the increasing cost of materials, the price of exterior home remodeling projects has risen, leaving many homeowners hesitant to tackle projects or encouraging them to scale back on their plans.

Improvement projects that are expected to return the least are a sunroom addition and a home office remodel, both estimated to recoup less than 46 percent of costs.

Source: (http://www.dwmmag.com/index.php/realtors-identify-exterior-replacement-projects-as-best-investment-for-homeowners)
DWM Mag

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HOME REPLACEMENT WINDOWS: “DO IT YOURSELF” GUIDE

A roofing contractor stands on the edge of a second-story window opening, working on the exterior structure of a building under construction, with ladders positioned below.

HOME REPLACEMENT WINDOWS: “DO IT YOURSELF” GUIDE

Contractor FAQs | How To Install Home Replacement Windows

New home replacement windows improve your living space by adding natural light and great views. But if your windows are not installed properly, all those benefits will fade away in the wake of rising heat bills and a lack of security. Your contractor knows how to install windows efficiently and effectively, providing a durable, attractive home exterior.
A roofing contractor kneels while installing a wooden trim around a window, with a tool belt and various tools visible around their waist.

Home Replacement Windows or New Windows?

The steps of window installation Arlington Heights IL depend on whether you’re looking at replacement windows or new windows. With replacement windows the exterior trim, siding, and interior moldings are left alone – you only need to replace the window and possibly the sash, depending on the style of the window.

The basic steps of home replacement window installation are:

  • remove existing windows and repair frame and sill, if necessary
  • pry off the stop, parting stop and sash
  • caulk on the interior side of the blind stop, as well as along back of the stool
  • tilt the window in place, pushing it firmly against the blind stop once fitted
  • loosely attach window into the frame with a half-tightened screw in opposite corners (top left and bottom right or top right and bottom left)
  • check the corner-to-corner measurements with the window closed and locked – use shims on the window until these measurements match exactly
  • insert partially tightened screws in the other two corners of the window
  • use shims to ensure the window is plumb, tighten all screws and test by fully opening and closing it several times
  • hang the interior stop back up using finishing nails
  • insulate any gaps using spray foam or fiberglass insulation and install a filler strip to hide gaps
  • caulk the exterior to prevent water leakage and weather damage

New windows, like those seen in new construction and home additions, require more precise fitting and trim work. While replacement windows may be a DIY project for skilled men and women, new windows need to be installed by an experienced professional to ensure a good fit.

The basic steps of new window installation are similar to those outlined above, but more work is done on the exterior of the home to ensure a watertight fit. The window frame and sill are built to fit the window, but shims are still used to ensure the window is level and plumb.

Measurements Are Key

No matter what type of windows we’re looking at, accurate home replacement window measurements make all the difference. Always be sure that horizontal measurements are made at the top, bottom, and middle of the window opening. Vertical measurements need to be taken on the left and right side of the opening, as well as down the middle.

Compare each set of measurements to ensure the window opening is level (horizontal measurements) and plumb (vertical measurements). Not only will these measurements be used to order the new windows, the comparisons also determine whether or not any work needs to be done on the opening.

Always check the home replacement windows when they arrive on-site to verify the size against your measurements. This helps to avoid surprises during the window installation process.

Understanding how to install windows helps ensure a smoother project, whether you’re going the DIY route or hiring an experienced contractor. All of the steps are important and come together to ensure your new windows fit well and operate dependably for years to come.

If you are looking for dependable home replacement windows for your home and want quality installation, hire a Revived Exteriors, local reputable contractor with a proven track record. You want a professional that’s been in business at least 5 or more years.

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HIGH ENERGY BILLS? WINDOWS REPLACEMENT REDUCE COOLING COSTS.

Three double-hung windows are shown, with the middle window's bottom sash tilted open while the others remain closed. The frames, perfect for residential roofing projects, feature different finishes: white, light wood, and dark wood.

HIGH ENERGY BILLS? UPGRADE YOUR REPLACEMENT WINDOWS TO CONTROL COOLING COSTS THIS SUMMER!

 High Energy Bills? Upgrade to Replacement Windows to Control Cooling Costs This Summer!

We all want to create a comfortable climate in our homes this summer, but single pane and older double glazed windows can push cooling costs out of control. Have you considered upgrading your existing windows to durable, energy-efficient replacement windows Arlington Heights IL?

You will find many new innovations in today’s market, designed to provide maximum efficiency and an impressive appearance.

What You Should Look For in a New Replacement Window

Talk to your window installer about the latest industry offerings, and consider your home’s exposure and the surrounding climate. Most double-glazed windows provide less insulation than triple-glazed products. For maximum performance choose a high-quality triple-glazed product with low-E coating and argon gas to create an excellent barrier against heat loss.

Low-E glass comes in several grades, including high solar gain, moderate and low solar gain types.  High solar gain Low-E glass works well in northern climates, transmitting more solar heat through the glazing to ease heating costs. Homes in southern climates are better protected with windows manufactured from low solar gain glass, which transmit less solar heat and maintain cooler interior temperatures.

Consider the framing and spacers of your new windows as well, investing in non-metal frames and warm-edge spacers for optimum savings on both heating and cooling costs.

Energy Star has minimum standards and testing required to meet their “Energy Star Rating” on many different products to help reduce the carbon footprint which reduces energy costs and ultimately increase comfort. Make sure your window installer that the windows will come with an Energy Star sticker attached to the window panes to guarantee energy savings.

“With proper planning and an experienced contractor on your side, this home improvement project will pay itself back within a reasonable amount of time through reduced cooling costs in the summer.”

Professional Installation is Important

Although window quality remains the top priority for this home improvement project, professional installation is essential. Incorrect installation can offset the benefits of a premium window, reducing your savings and putting added strain on your air conditioner.

Hire an experienced window installer to put in high-quality replacement windows, and ask that contractor about recommended brands suitable for your property. The contractor should carry a variety of brands, and be able to offer you a decent selection of windows in a range of styles and sizes.

Other Ways to Improve the Building Envelope

Many people take the time to winterize their homes without realizing that similar processes improve efficiency during the summer. Cut out drafts and reduce heat loss with a few quick and affordable projects designed to keep cool air in and hot air out.

Check for gaps around your doors and seal these areas with high-quality caulking or foam. Heat escapes through cracks and gaps during the winter, but those spots also allow hot air to seep into your home in the summer. Creating an airtight building envelope will reduce or eliminate this exchange of air, allowing your air conditioner to reach peak efficiency.

Add window treatments to south-facing windows to block the sun’s rays during hot summer afternoons. Many people find that interior temperatures remain steady and comfortable when their blinds, shutters or curtains are closed during the day (most often while they are at work). Give your air conditioner a break by shutting the sun out during the hottest hours.

Final Thoughts

Replacement windows certainly improve the appearance of your home, but the true advantages are found inside. With proper planning and an experienced contractor on your side, this home improvement project will pay itself back within a reasonable amount of time through reduced cooling costs in the summer. Live comfortably and affordably by upgrading your windows this year.

Have you had energy star rated replacement windows recently installed on your home? How much did you energy costs go down? Have you tried the cost-effective tips above to reduce your energy costs? If yes, what was your experience like? Call us, Revived Exteriors and learn more how we can help you.

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NEW EXTERIOR DOORS IMPROVE PROPERTY VALUE AND PEACE OF MIND

A pair of wooden double doors with ornate black metal scrollwork and glass panels set in an arched frame, adding a touch of elegance to any commercial roofing entrance.

Homeowners in the Chicago area value a secure and comfortable home. Installing new exterior doors on your Chicago home will improve property value, increase peace of mind and create greater levels of comfort and security for your family. How can a door do all of that? With quality design, precise manufacturing and expert installation.

NEW EXTERIOR DOORS BOOST CURB APPEAL

Changing your existing door (or doors) for a newer model is similar to changing your outfit – it can provide a whole new look. New exterior door models include decorative window inserts, attractive wood grain patterns and classic panel profiles. Include a transom window or sidelights for higher levels of natural light inside your home. Replacing a traditional storm door with a modern screen door is another popular project.
Upgrading your exterior door is an affordable home improvement that boosts curb appeal and dresses up the house. Add style and an upscale atmosphere with a new door or set of doors. Choose the color, profile and accents you prefer to create the ideal entrance for your home.

NEW EXTERIOR DOORS PROVIDE GREATER STRENGTH AND SECURITY

Today’s door products have enhanced designs targeting strength and security. Quality steel and fiberglass doors come with better locking capabilities, including steel channels and a layered design to resist warping and excessive force. Hardwood doors require regular maintenance, but provide a solid, highly durable barrier that can be fitted with the latest locking mechanisms.
A well made, properly installed exterior door discourages burglars. Older, flimsier doors make easy targets and allow would-be thieves to gain entry quickly. Invest in your family’s security by upgrading your existing entrance, side or garage man-door with good quality products that include enhanced strength and security features.
New Exterior Doors Improve the Building Envelope
Improved insulation is another benefit of exterior door replacement in Chicago homes. Energy efficient doors act as a heat barrier, keeping in the cool during summer and blocking heat from escaping over the winter. In spring and fall, a well made door helps to protect your home from wind and other harsh weather conditions.
Doors play a major role in your building envelope, and must complement the exterior finish, windows and roofing in order to offer optimum protection and insulation value. Think about the door panel design as well as any windows incorporated into the door, and be sure to invest in a product with insulation value and maximum durability.

WHAT TO CONSIDER IN AN EXTERIOR DOOR

Think about these three vital factors when shopping for a new door:

Exterior Door - Wood and Glass* Appearance – it must suit your home’s architecture, and fit within your personal tastes.
* Durability – including the insulation value, strength and security features.
* Maintenance – hardwood doors must be stained or painted on a regular basis, but scratches and marks can be easily fixed, while steel and fiberglass replacement doors are low maintenance, but more difficult to repair when damaged.

Weigh your options and compare products in order to chose the best exterior door for your Chicago area home. This home improvement project will add curb appeal, enhance security and improve energy efficiency. Talk to your local contractor about all of the benefits new exterior doors can offer your family.

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© Copyright | Revived Exteriors | *DISCLAIMER: Revived Exteriors, Inc. is neither a broker nor a lender. Financing is provided by third-party lenders unaffiliated with Revived Exteriors, Inc., under terms and conditions arranged directly between the customer and such lender, all subject to credit requirements and satisfactory completion of finance documents. Any finance terms advertised are estimates only. Revived Exteriors, Inc. does not assist with, counsel or negotiate financing, other than providing customers an introduction to lenders interested in financing Revived Exteriors customers.