Replacing windows – how to do it successfully
Replacing old windows is one of the most sustainable modernization measures in Swiss residential construction. New window systems reduce heat loss, improve sound insulation, increase security, and ensure a significantly more pleasant indoor climate. At the same time, window replacement is a project in which costs and quality can vary greatly. The year of construction, installation situation, glazing, and choice of materials have a major influence on the result.
This guide shows you what prices you should realistically expect, which window types have proven themselves, and what really matters when it comes to planning and installation.
How much do new windows cost in Switzerland?
Quotes can vary greatly, as installation costs and technical equipment are decisive factors. The following overview provides practical guidance for standard windows, including installation. Special formats, increased security requirements, or difficult situations in older buildings usually incur higher costs.
Standard all-inclusive prices per window (including installation)
Plasticwindows
Price-conscious, good insulation, low maintenance.
Around $450–800
Woodenwindows
Natural look, very good thermal insulation, regular maintenance required.
Around $700–$1,100
Wood-aluminum windows
Wood on the inside, aluminum on the outside—durable and high-quality.
Around $850–1,200
Aluminumwindows
Very sturdy, modern, ideal for large glass surfaces.
From approx. $1,100 to $1,500
Skylights
More complicated to install due to roof opening and sealing.
Approximately $2,200–$3,000, depending on roof structure
These values are guidelines for standard formats. Soundproof glass, safety glazing, or special coatings increase the price accordingly.
Which factors have the greatest impact on costs?
It's not just the window material that determines the price—often it's the technical details and installation:
- Glazing: Triple glazing is standard today; additional features such as sound insulation or sun protection increase the cost.
- Insulation value (Uw value): The better the thermal insulation, the higher the requirements for frames and glass.
- Security features: Burglar-resistant fittings and safety glass add significantly to the cost per window.
- Installation situation: Older buildings often require more adjustment and sealing work.
- Installation type: Renovation windows are cheaper, but only make sense if the existing frame is in good condition.
- Accessibility: Upper floors, large elements, or lifting platforms increase the installation effort.
- Removal and disposal: Old windows incur additional costs of around $70–140 per unit.
Overview of window types: materials, properties, and areas of application
The right window system not only affects the price, but also maintenance, service life, and appearance. A comparison of the most important variants:
Plastic: functional and cost-effective
Plastic windows offer excellent value for money in terms of insulation performance. They are weather-resistant, easy to maintain, and particularly popular for renovations. They have a simpler appearance and are less stable than metal solutions for very large glass surfaces—but are perfectly adequate for many residential buildings.
Wood: classic and cozy
Wooden windows create a pleasant atmosphere and are ideal for older buildings or high-quality renovations. They provide excellent insulation but require regular maintenance, especially on facades exposed to harsh weather conditions. Anyone who values aesthetics and sustainability should consciously factor in the maintenance costs.
Wood-aluminum: durable and high-quality
This combination combines the advantages of both materials: warm wood on the inside, a protective aluminum shell on the outside. This significantly reduces maintenance and extends the service life. Wood-aluminum windows are more expensive, but are considered a very robust premium solution.
Aluminum: modern and extremely stable
Aluminum windows are particularly suitable for modern architecture and large window areas. They are dimensionally stable, durable, and virtually maintenance-free. Due to their higher cost, they are mainly used in design-oriented or technically demanding projects.
Plastic-aluminum: a balanced hybrid
Plastic on the inside, aluminum on the outside—this solution is more stable than pure plastic and more affordable than wood-aluminum. It offers good insulation values, low maintenance, and more design freedom at a moderate additional cost.
Skylights: special requirements
Skylights are more exposed to the weather and technically more complex. Waterproofing, thermal insulation, and ease of use play a key role. When properly planned, they provide plenty of daylight and significantly enhance attic spaces.
When is the right time to install new windows?
It is often worth replacing windows before they show visible signs of damage. Typical signs include:
- Noticeable drafts despite intact seals
- Condensation or mold on windows and window reveals
- High heating costs and cold glass surfaces in winter
- Defective fittings or stiff sashes
- High noise pollution from outside
- Outdated burglary protection
- Windows older than 25–30 years, even if they still function
In these cases, replacement often brings more benefits than selective repairs.
Common mistakes when replacing windows—and how to avoid them
Windows are long-term components. Mistakes in selection or installation have an impact for decades.
Only pay attention to the lowest price
Cheap offers often cut corners on glass construction, fittings, or installation quality.
Choosing unsuitable glazing
Sound insulation, sun protection, and thermal insulation should be appropriate for the location and use.
Choosing materials without considering maintenance and service life
Not every material is equally suitable for every facade or application.
Underestimating installation
Faulty connections lead to drafts, moisture, and heat loss—regardless of the quality of the window.
Failure to analyze old buildings properly
Inaccurate measurements, old frames, or crooked reveals can lead to costly rework.
Conclusion: Replacing windows is worthwhile—with good planning
New windows reduce energy costs, increase living comfort, and increase the value of a property. It is not only the window system that is decisive, but also the combination of material, glazing, insulation value, and professional installation. Those who obtain several comparable quotes and pay attention to quality in planning and installation will benefit in the long term from reliable, durable windows.
How RENOVO24 works
Find the right service provider without any detours! We make it easy for you: Here's how our service works, from inquiry to appointment booking.
1
Answer questions about the order
Answer a few questions about your desired work in our form. It only takes a few minutes.
2
Receive and compare offers
Receive up to 3 free, no-obligation quotes from verified companies in your area.
3
Hire your preferred service provider
Compare prices and choose the offer you like best. Hire your preferred service provider.
Find the right service provider in just a few steps.
Request a service now free of charge—with no obligation to place an order.
