Heartwood Window and Door, Inc. - Loewen Windows

Founded in 2003, Heartwood Window and Door has distinguished itself as the leading provider of high-quality windows and doors across the greater San Francisco Bay Area. Our attention to detail and professional service will make the difference in your project.

We are passionate about educating people on the full range of innovative window and door options, spanning traditional to cutting edge. We are also honored that some of the world’s best manufacturers and suppliers have chosen to partner with Heartwood, including renowned brands such as Loewen, Unilux, and Western Window Systems.

Customer satisfaction is the most important goal of our business and we do everything possible to maintain and reinforce that. We stand by our work and back up every job we have ever done.


990 N Rengstorff Ave
Mountain View, CA 94043


Phone: 650.855.9357

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