Aluminum Window Cost: What to Expect in 2026

Aluminum window cost typically falls between $350 and $1,100 per opening installed. The exact price depends on whether the existing frame can support an insert installation or must be replaced entirely. A frame inspection decides which method applies before any price is finalized.

How Aluminum Window Pricing Is Built

Window replacement is priced as separate line items: the window unit, labor, removal of the old window, and trim work. No single number covers everything until a contractor inspects the opening.

For an aluminum window installed as an insert, the planning range is $350 to $800 per opening. If the frame is damaged, rotted, or out of square, full-frame replacement applies, with a planning range of $550 to $1,100 per opening. These are estimates, not quotes.

Here is how the separate costs might look on a sample project:

• Aluminum window unit: $200–$500
• Labor: $100–$300
• Removal and disposal: $50–$150
• Trim and finishing: $50–$200

Total estimated range: $400–$1,150, which overlaps the standard planning bands above. Actual pricing varies by window size, glass type, and local labor rates.

Insert vs. Full-Frame Replacement

Insert replacement leaves the existing frame in place and fits the new aluminum unit inside it. This method works when the frame is level, square, and free of rot. Because less demolition is required, labor is usually lower and the project finishes faster.

Full-frame replacement removes the window and the frame down to the rough opening. It is necessary when the frame cannot be reused. It costs more because it involves additional carpentry, interior and exterior trim, and often paint or stucco repair.

A contractor cannot determine which method applies until the frame is inspected. Until then, any single price is only a planning band, not a quote.

Aluminum Compared With Other Frame Materials

Aluminum is one of several common frame options. The following figures are installed planning ranges per opening and should not be treated as quotes:

• Vinyl double-hung insert: $350–$800
• Full-frame replacement: $550–$1,100
• Fiberglass window installed: $600–$1,200
• Wood or composite window installed: $900–$1,800

Aluminum often compares closely with vinyl on price, while wood and composite typically cost more. Fiberglass sits between vinyl and wood in many markets. Style and size also move the price. For example, a bay or bow window costs $1,500–$5,000 because of the larger opening and additional framing. Impact or hurricane-rated aluminum windows cost $1,200–$2,600 installed.

If only the glass is failing and the aluminum frame is sound, glass pane or IGU replacement costs $150–$450. A window screen replacement costs $100–$350. These are smaller repairs that do not require full window replacement.

Size, Style, and Glass Options

Window size is measured in feet and inches. A common residential double-hung opening might be 3 feet wide by 5 feet tall, or 15 square feet of glass. Larger openings require heavier aluminum extrusions and more labor, which raises the unit and installation cost.

Common styles include double-hung, casement, sliding, and picture windows. Each style has different hardware and sealing requirements. A picture window has no moving parts and may cost less than a casement or double-hung of the same size, but it does not provide ventilation.

Glass choices affect cost and performance. Double-pane insulated glass units are standard in most climates. Low-emissivity coatings and argon gas fills add to the unit price but can reduce heat transfer. In hurricane-prone regions, impact-rated glass adds significant cost and is often required by code.

Arithmetic Example: Estimating a Full Project

Suppose a homeowner wants to replace five aluminum double-hung windows using insert installation. Each opening is roughly 3 feet by 5 feet. Using the midpoint of the insert planning band:

• Unit cost per window: $350 (midpoint of $350–$800 is not a single quote; using the lower planning anchor for illustration)
• Labor per window: $150
• Removal per window: $75
• Trim per window: $75

Per window subtotal: $350 + $150 + $75 + $75 = $650
Five windows: $650 × 5 = $3,250

If two of the five frames fail inspection and require full-frame replacement, those two openings move to the higher planning band. At $800 per opening for those two and $650 for the remaining three:

• Full-frame windows: $800 × 2 = $1,600
• Insert windows: $650 × 3 = $1,950
• Project total: $1,600 + $1,950 = $3,550

This arithmetic shows how frame condition changes the total. It is an estimate only; actual quotes come after inspection.

Weight and Structural Considerations

Aluminum is strong and relatively light compared with wood, but large aluminum windows still carry weight. A 3-foot by 5-foot double-pane unit might weigh 60 to 90 pounds depending on glass thickness and gas fill. A bay or bow assembly can weigh several hundred pounds across multiple units.

Upper-story installations may require scaffolding or lift equipment, which adds labor cost. If the rough opening needs reinforcement to support a larger or heavier window, a carpenter must frame the opening before the window is installed. That structural work is priced separately from the window unit.

Energy Ratings and Labels

Aluminum conducts heat more readily than vinyl, fiberglass, or wood, which can affect U-factor and solar heat gain ratings. Thermal breaks—insulating barriers inside the aluminum frame—reduce heat transfer and are common in modern aluminum windows.

The National Fenestration Rating Council tests and certifies windows for U-factor, solar heat gain coefficient, and visible transmittance. The U.S. Department of Energy and ENERGY STAR provide guidance on climate-appropriate performance levels. These ratings help homeowners compare products, but they do not set installation prices.

Getting an Accurate Price

Because insert versus full-frame replacement is decided after frame inspection, homeowners should treat online figures as planning bands. A reliable estimate requires:

1. Measuring each opening in feet and inches
2. Inspecting the existing frame for rot, square, and level
3. Selecting glass type and performance options
4. Pricing unit, labor, removal, and trim separately

Window Replacement Lab provides cost guides by style to help with early budgeting. You can review general replacement pricing at /window-replacement-cost/, style-specific pricing at /window-replacement-cost-by-style/, and double-hung pricing at /double-hung-window-cost/. For larger openings, see /bay-window-cost/ and /bow-window-cost/.

Final pricing comes from a licensed contractor after an on-site inspection. Do not sign a contract based on a planning band alone.

What to Expect During Installation

Installation usually takes one to two hours per window for insert replacement, and longer for full-frame work. The crew removes the operating sash, cleans the opening, sets the new aluminum unit, secures it, and installs interior and exterior trim. They should also check operation, locking, and weatherstripping before leaving.

Removal and disposal of the old window is a separate charge. Trim repair or replacement may require paint or stain to match the home. Ask whether the quote includes caulking, flashing, and disposal, or whether those are billed separately.

Aluminum windows are durable and low-maintenance, but they are not immune to condensation in cold climates because metal conducts temperature. Proper installation and flashing matter more than frame material for long-term performance.

If you are comparing materials, remember that vinyl double-hung insert pricing starts at $350–$800, while wood or composite installed windows run $900–$1,800. Aluminum usually sits in the lower-to-mid range, but the final number depends on the frame inspection and the line items above.

Next, compare window replacement cost, window replacement cost by style, bay window cost before you commit.