Business Details
50+ Years
experience
Energy-Efficient Window & Door Solutions in Modesto
We are Don's Mobile Glass, a family-owned business that has served California's Central Valley since 1960. Our journey began with automotive glass repairs and expanded into residential and commercial window and door solutions as industry needs evolved. We specialize in replacing single-glazed windows with energy-efficient dual glazing systems, combining advanced technology with durable materials. With over 20,000 satisfied clients and 500,000+ installations, our team brings decades of experience to every project. We maintain a commitment to customer service through expert installations of premium windows and doors while offering competitive pricing for contractors and DIYers alike.Our showroom in Modesto showcases the largest selection of vinyl, wood, fiberglass, and metal window and door products in the region. We pride ourselves on providing personalized solutions that enhance home comfort, reduce energy costs, and increase property value. Our knowledgeable staff ensures every customer receives tailored recommendations based on their specific needs and preferences. Backed by lifetime warranties from top manufacturers, our products combine functionality with aesthetic appeal. As the area's trusted experts, we remain dedicated to advancing our technical expertise while maintaining the integrity that has sustained our business for over six decades.
Services
Energy Efficient Windows
Entry Doors
Patio Doors
Security Doors
French Doors
Pet Doors
Wall Systems
Details
- Year established: 1960
Highlights and features
- We've provided energy-efficient solutions since 1960 with 500,000+ installations
- Our expert technicians offer personalized, on-site consultations
- We guarantee precision installations backed by manufacturer warranties
- We maintain the region's largest selection of premium window and door products
- Our energy-saving solutions reduce utility costs while increasing home comfort
What people say
Energy savings
Professional installation
Product variety
Expert staff
Largest selection
Services
Energy Efficient Windows
Our energy-efficient windows feature dual-glazing technology that reduces heat transfer and lowers utility bills. These advanced solutions maintain indoor comfort while enhancing property aesthetics. Available in vinyl, fiberglass, wood, and aluminum frames, they provide lasting durability against California's climate conditions. Our installation process ensures proper sealing to maximize energy savings.
Entry Door Installation
We install premium entry doors combining security features with architectural style. Our wood and fiberglass options offer thermal efficiency and resistance to wear. Each installation includes custom staining or painting to match home exteriors. Backed by manufacturer warranties, these doors enhance curb appeal while protecting against forced entry attempts.
Patio Door Systems
Modern patio doors create seamless transitions between indoor and outdoor spaces. Our selection includes energy-efficient options with multi-point locking systems for security. Available in various configurations, they feature low-maintenance materials that withstand frequent use while maintaining visual appeal and thermal performance.
Wall Systems
Our moving glass wall systems optimize natural light and outdoor connectivity. Choose from bi-fold or pocket configurations in multiple framing materials. Precision installation ensures smooth operation and thermal efficiency. These systems transform living spaces into open, flexible environments while maintaining weather protection.
Security Doors
Reinforced security doors provide enhanced protection without compromising visibility. Constructed from heavy-duty materials with commercial-grade locking mechanisms, they deter intrusions while maintaining ventilation. Our installations balance safety requirements with design elements that complement home exteriors.
Questions
What areas do you service?
We serve Stockton, Manteca, Modesto, Merced, Tracy, Turlock, Oakdale, Riverbank, Salida and surrounding Central Valley communities.
Do you offer financing options?
Yes, we provide low interest financing options to make energy-efficient upgrades more accessible for homeowners.
What window materials do you carry?
We offer complete selections in vinyl, fiberglass, wood, and aluminum window frames to suit different architectural styles and performance needs.
How long does installation take?
Most standard window and door replacements complete within one day, with larger projects scheduled according to scope.
Are your products energy efficient?
Yes, all our windows and doors feature advanced energy-saving technology to reduce heat transfer and lower utility costs.
Do you provide warranties?
We offer comprehensive manufacturer warranties covering materials and workmanship, with extended protection options available.
Reviews (5)
Jessica Rodriguez
May 14, 2021
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So far so good. Just waiting for them to come and install the windows, which might be a 2-3 month wait time. Either than the wait time the prices were reasonable.
Arthur J. Spears
Apr 23, 2021
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Well I recommend this company Cal Comfort Windows & Doors. I got 4 estimates they where in the middle somewhere completely upfront, and honest about everything. Very professional from start to soon finish. And super clean and friendly. Arrived on-time and just at 8 a.m. this morning and almost finished by lunch!
Chris Rivas
Apr 23, 2021
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I called and talked to bob about installing a new kitchen window. this company came out within (2) days and took measurements. Bob called me back the next day with a quote. moving forward, i am very pleased with the finished product & install. my kitchen looks great. thanks again Service: Window installation
Tracy Miller
Dec 17, 2020
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If you are looking for good quality windows from a local company that is willing to earn your business, look no further than Cal Comfort. We needed to get a couple new windows installed in 2019 prior to a painting crew's scheduled arrival, and these people worked hard to make this happen even though we were told not to expect it to happen. All I could ask was that they try, and try they did! They got the windows ordered, delivered, and installed before our painters arrived. Thanks again Cal Comfort!
Melissa Schultze
May 25, 2018
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So happy we decided to choose CalComfort to install our home windows. The team that was sent to our house to do the job went above and beyond! They were polite, moved quickly, respectful and cleaned up after themselves. We would recommend this company over and over to anyone looking to replace their windows. Quality work and great people to work with. Thank you!
