For maximum energy efficiency and year-round comfort, choose Apex Xtreme Series Windows & Doors from California Energy Contractors (CEC). With Apex Xtreme, you’ll enjoy unmatched reliability and the peace of mind that comes along with a True Double Lifetime Warranty.

A Superior Warranty

Apex Xtreme Windows and Doors are backed by the most inclusive lifetime warranty in the industry. Our True Double Lifetime warranty coverage is also transferable to the next subsequent homeowner if you sell your home. That’s two lifetimes of truly worry-free windows and doors.

Window Options