Cut Heating Costs with Energy-Efficient Double Glazing

Did you know that up to 25% of a home’s heat is lost through windows? Installing energy-efficient double glazing can reduce this heat loss by up to 75%. In a typical three-bedroom detached home, replacing outdated windows could save up to £160 a year on heating bills. A well-insulated home not only lowers energy consumption but also reduces CO2 emissions, making it an eco-friendly choice.

Crown Windows provides high-performance double-glazing solutions tailored to your needs. All our windows are designed to keep your home warm and secure while enriching its aesthetic appeal.

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UPVC Windows

Best Price Guaranteed

  • Excellent thermal efficiency
  • Enhanced security
  • Highly customisable
smarts black window

Casement Windows

Best Price Guaranteed

  • Unobstructed views
  • Excellent ventilation
  • Enhanced security
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Flush Sash Windows

Best Price Guaranteed

  • Sleek and modern design
  • Customisable options
  • Enhanced security
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Sliding Sash Windows

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  • Energy efficient
  • Enhanced security
  • Timeless aesthetic
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Tilt & Turn Windows

Best Price Guaranteed

  • Versatile ventilation
  • Easy cleaning
  • Energy efficient
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Georgian Windows

Best Price Guaranteed

  • Thermally efficient
  • Enhanced security
  • Period aesthetic
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Lead Windows

Best Price Guaranteed

  • Customisable design
  • Suitable for any property
  • Expertly crafted
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white uvc casement window
White double-paned window with Georgian bars set in a rustic stone cottage wall.
A white Georgian window uPVC triple-paned window installed in a brick house exterior, with part of a bare tree branch visible in the foreground.
A white uPVC double-glazed window with internal blinds, set in a red brick wall with an arched brick detail above.
Decades of Industry Experience

Trusted Double Glazing Installers in Milton Keynes

For over 20 years, Crown Windows has been installing high-quality double-glazed windows, doors, and conservatories across Milton Keynes, Buckinghamshire, Bedfordshire, and Northamptonshire. We combine expert craftsmanship with a personal touch, ensuring every project meets our high standards.
Our double-glazed windows come with a 10-year insurance-backed guarantee, giving you peace of mind. Whether you’re upgrading your home or replacing old windows, our team is here to help.

Visit our showroom to explore our full range or get in touch for a free quote.

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Made-to-Measure Double Glazing

Custom Double-Glazed Windows Installed by FENSA-Registered Experts

Double glazing improves insulation, reduces heat loss, and lowers energy bills. We supply and install made-to-measure double-glazed windows, designed to fit your home precisely.

  • A-rated double glazing as standard
  • Custom sizes and styles to suit all properties
  • Energy-efficient glass to help reduce heating costs
  • Professional installation by FENSA-registered fitters

Our team fits double glazing in compliance with building regulations. You receive a free consultation and a detailed 3D design plan before installation, so you can see how your new windows will look.

Upgrade your home with high-quality double-glazed windows designed for better insulation, lower energy costs, and improved security.

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A home improvement specialist discussing a 3D conservatory design plan with a customer on a computer screen, featuring energy-efficient windows and a bi-fold door.

How Does Double Glazing Improve Energy Efficiency?

Double glazing works by trapping air between two glass panes, creating an insulating barrier that reduces heat loss. This helps maintain a comfortable indoor temperature, cutting down on heating costs while keeping your home warm during colder months.

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Do I need planning permission for double glazing?

Most homes don’t require permission, but conservation areas may have restrictions. Contact us for advice.

Are A-rated windows worth it?

Absolutely. A-rated double glazing significantly improves insulation and lowers heating costs.

Do double-glazed windows reduce noise?

Yes, they provide excellent sound insulation, making your home quieter and more peaceful.

How long do double-glazed windows last?

With proper maintenance, high-quality double glazing can last 20–30 years or more.

What are the benefits of double glazing?

Double glazing improves energy efficiency, improves security, reduces noise pollution, and minimises condensation.

Order Process

At Crown Conservatories, Windows and Doors Ltd , we believe in making the order process as simple and convenient as possible for our customers. Here's how it works:

Quotation

Once you get in touch with us regarding your project, you can expect a response from our team within 24 hours.

Design & Survey

A 3D design plan and expert guidance help you visualise your final result. Our attention to detail ensures a seamless fit and high-quality finish.

Installation

Our experienced fitting teams will ensure that your new windows and doors are installed with precision and care.

Aftercare

Our products come with a 10-year warranty as standard. Should any issues arise, you can rely on us to address them.
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