The Window Works of California has provided central Contra Costa County homeowners with the finest products and professional installation since 1978. Select a contractor as carefully as you would your doctor or lawyer. We are a licensed contractor holding a "B classification (General Building Contractor) and a "C17" specialty classification (Window and Glazing Contractor) giving us the ability to properly install windows and doors, or to alter or create a new opening for a window or door. We are bonded under the new state requirements of $15,000 and carry liability insurance protecting your home.

Replacing windows and doors in your home is a big decision. But with our proven product lines, lifetime product warranties and our expert installation, we can make that decision easier. The beauty, low maintenance and sound insulating qualities will also add years of enjoyment and VALUE to your home. Let us help you keep your home cooler this summer, warmer this winter and QUIETER all year long. See how new dual paned windows and doors can save you money on your gas and electric bill. Thank you for your time and giving The Window Works of California the opportunity to bid on your home improvement project.

Unwanted heat losses and gains through windows waste up to 30% of all energy used to heat and cool buildings in this country, according to the Lawrence Berkeley Laboratories. NFRC is a non-profit organization that administers the only uniform, independent rating and labeling system for the energy performance of windows and doors. Their goal is to provide fair, accurate and reliable energy performance ratings.

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