Energy-Efficient Windows & Doors in California
Upgrade your windows and doors to improve comfort, reduce outside noise, and lower your energy bills. Modern, high-performance products seal out drafts, block heat, and make your home quieter and more comfortable year-round while cutting the load on your HVAC system and saving you money every month.
Why Upgrade Your Windows & Doors?
New windows and doors deliver better insulation, quieter interiors, improved security, and enhanced curb appeal. They seal out California's heat in summer and keep warmth inside during winter, which means your air conditioner and heater don't work as hard. You'll notice the difference in comfort and on your utility bills.
Posted on Brandi StuessyTrustindex verifies that the original source of the review is Google. Thomas and Brent with California Renewable Energy are amazing!! They walked us through every step, they addressed any questions or concerns we had right away, both are very friendly/professional and made this whole process very smooth and easy. Thank you both.Posted on Connie LoweTrustindex verifies that the original source of the review is Google. Nate was great very thorough and came by to check on the installation to ensure it stayed on track! Great experience. Thank youPosted on Kara TaylorTrustindex verifies that the original source of the review is Google. Working with California Renewable Energy was a pleasure. This project had been a nightmare for the last two years, but when California Renewable Energy came in, along with Solar Doctors, things went fast, smoothly, and we couldn't be happier with our ground mount setup.Posted on Pat KaveskiTrustindex verifies that the original source of the review is Google. We found Nate Blanton on a Facebook ad. We contacted him and received a call from him. After a brief conversation, we set up a meeting to discuss replacing our messed up roof and installation of solar panels with battery back up. He arrived at our house on a Saturday due to my spouse working during the week. We spent several hours going over materials that would best suit our needs and a price we could afford. His dedication to his company and great customer service had us sold. We were in contract within a couple of days. There was a bit of confusion with the permit office which was no fault of Nate or the company he works for. Brent, their representative, spent hours at the permit office and kept us informed and worked through all of the kinks that the permit office threw at us. Nate kept in contact with us through everything assuring us everything would go smoothly. We had many questions and he would have the answers immediately. The big day came and our roof was installed. It is a vision of beauty. It's perfect and we're confident in the workmanship that we received. We have recommended Nate to our family, friends and neighbors. The work passed inspection the first time, which is impressive for our county. We are happy that we found this company and to have met Nate.Posted on Laura SloppyeTrustindex verifies that the original source of the review is Google. Nate Blanton directed me into a finance program that worked with my budget! My HVAC system was almost 30 years old with no warranty. I now have beautiful system installed and it’s going to save me money on my SMUD bill. What a great company and install crew! Jeremy was great and install team! Very smooth and thorough process! I would recommend to anyone!Posted on Pam WittnerTrustindex verifies that the original source of the review is Google. Dani and the rest of the team including the owner were great to work with. The did extensive research on possibly moving our solar panels to another location. They are very kind and professional!Posted on Carmen DanielsTrustindex verifies that the original source of the review is Google. Nate Blanton was extremely professional! The crew did an excellent job. Nate was really helpful with a plan we could afford. Highly recommend!!Posted on Jenny StewardsonTrustindex verifies that the original source of the review is Google. We had an amazing experience with our window installation. The windows themselves are beautiful, the install was smooth, and we were also treated to a luxurious welcome package. California Renewable Energy demonstrated itself to be a truly excellent company to collaborate with, and we will be doing many more projects with them in the future!Posted on cheryl demelloTrustindex verifies that the original source of the review is Google. I had a great experience with the service they provided. Nate explained everything and I told him I was on low income so he worked with me to make service available and I got my air conditioner and furnace both the next day installed I would recommend the service to others the service was excellent and they also fixed a few other issues that was for my furnace and condenser as well California Renewable Energy is a great company to have take care of air conditioners and furnaced in a timely matter.
Our Window Replacement Services
We handle full window replacements for single-family homes throughout California. Whether you're updating a few windows or replacing every unit in your house, we install energy-efficient products that match your home's style and deliver long-term performance and comfort.
- Full Window Replacement
We remove old windows completely and install new, energy-efficient units with proper sealing and insulation. Full replacement gives you the best performance, the most design flexibility, and the strongest warranties on both the product and our installation work.
- Retrofit & Insert Windows
Retrofit windows fit inside your existing frames, which minimizes disruption to interior and exterior finishes. They're a great option when frames are still solid and you want to upgrade glass and seals without the cost and mess of a full replacement.
- Custom Sizes & Styles
We offer custom window sizes and designs to fit unique openings, architectural details, and personal preferences. Whether you need bay windows, casements, sliders, or picture windows, we'll build and install units that match your home perfectly.
- Improve Comfort & Cut Drafts
Modern windows and doors seal out hot air, cold drafts, and wind better than older units. You'll feel more comfortable in every room without constantly adjusting the thermostat, and your home will maintain consistent temperatures throughout the day.
- Lower Your Energy Bills
Better insulation means your HVAC system runs less to keep your home comfortable. That reduces wear on your equipment, extends its lifespan, and lowers your monthly energy bills. Over time, the savings can offset a significant portion of your investment.
- Reduce Outside Noise
High-performance glass and tight-sealing frames help block traffic noise, barking dogs, and neighborhood sounds. You'll enjoy quieter rooms for working, sleeping, and relaxing, especially if you live near busy streets or in dense neighborhoods.
- Enhance Security & Curb Appeal
Strong frames, multi-point locks, and impact-resistant glass improve your home's security. Fresh, stylish windows and doors also transform how your home looks from the street, which boosts curb appeal and can increase resale value when it's time to sell.
Window & Door Styles and Options
We offer a range of frame materials, glass types, and design options to match your home’s architecture, your budget, and California’s climate. Every choice is selected for performance, durability, and energy efficiency, so you get windows and doors that look great and perform even better.
Frame Materials (Vinyl, Fiberglass, etc.)
Vinyl frames are low-maintenance, energy-efficient, and affordable. Fiberglass offers superior strength and insulation with minimal expansion and contraction. We’ll help you choose the frame material that best fits your home’s style, your performance goals, and your budget.
Glass & Glazing Options
Double-pane glass with low-E coatings reflects heat while allowing light through, which keeps your home cooler in summer and warmer in winter. Argon or krypton gas fills between panes add extra insulation. We’ll recommend the right glazing package based on your climate zone and sun exposure.
Colors, Grids & Hardware
Choose from dozens of exterior and interior colors, decorative grids that match your home’s style, and hardware finishes from brushed nickel to oil-rubbed bronze. Customization options let you create windows and doors that complement your home’s design inside and out.
- How it works
Our Installation Process
We manage every step, from in-home consultation to final walkthrough, so you know exactly what to expect. Our process is designed to be efficient, transparent, and minimally disruptive while delivering quality installations that meet California building codes and manufacturer specifications.
In-Home Consultation & Measurements
We assess your existing windows and doors, discuss your goals for comfort and style, and take precise measurements. You'll get recommendations on products and features that fit your needs and budget without any pressure to overbuy.
Product Selection & Proposal
We'll help you choose frame materials, glass options, colors, and hardware that match your home and priorities. Then you'll receive a clear proposal that outlines products, installation scope, timeline, and total cost with no hidden fees.
Professional Installation
Our trained installers remove old units carefully to avoid damage to walls and trim. We install new windows and doors, seal openings properly with weatherstripping and insulation materials, and ensure smooth operation and a tight fit that eliminates drafts.
Clean-Up & Final Walkthrough
After installation, we clean the work area, haul away old units, and walk you through how to operate, lock, and care for your new windows and doors. You'll leave confident that everything works perfectly and looks great.
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Financing & Incentives
We offer flexible financing options to make window and door upgrades affordable, whether you're replacing a few units or your entire home. Some California programs also offer rebates or tax credits for energy-efficient improvements, which can lower your upfront costs even further.
Flexible Payment Options
We work with financing partners to provide low-interest loans and payment plans that fit different budgets. Many homeowners find that monthly payments are offset by energy savings, which makes upgrading windows and doors more accessible without waiting years to save up.
Possible Rebates & Efficiency Incentives
Energy saving windows and doors may be eligible for limited programs or rebates. Some California utilities offer incentives, and we can help check what is available and assist with any needed paperwork.
Warranties, Licensing & Quality Standards
We back every installation with comprehensive warranties on both products and workmanship. Our crews are fully licensed and insured, and all work is completed to California building codes to ensure your windows and doors perform reliably for decades.
- Manufacturer Product Warranties
Windows and doors typically come with limited lifetime warranties covering glass seal failure, frame defects, and hardware malfunctions. We work with manufacturers that stand behind their products and make warranty claims easy if issues arise.
- Workmanship Guarantee
Our installation warranty covers the quality of our work, including proper sealing, alignment, and operation. If there’s ever an issue with how your windows or doors were installed, we’ll make it right at no cost to you.
- Licensed & Insured Installers
California Renewable Energy is fully licensed and carries comprehensive liability and Workers’ Compensation insurance, ensuring every project is completed safely and in full compliance with California regulations.
- FAQS
Windows & Doors FAQs
Homeowners ask us a lot of questions about installation timelines, how messy the process is, and which products work best for California homes. Here are straightforward answers to the most common ones.
How Long Does Replacement Take?
Most window installations take 30 minutes to an hour per unit. A typical whole-home project with 10 to 15 windows is completed in one to two days. Door installations usually take 2 to 4 hours per unit, depending on size and complexity.
Will Installation Be Messy or Disruptive?
We protect your floors, furniture, and landscaping throughout the installation. Most work is done from the outside, and we clean up thoroughly after each window or door is installed. You can stay in your home during the project with minimal disruption to your daily routine.
Which Windows or Doors Are Best for My Home?
The best choice depends on your climate zone, sun exposure, home style, and budget. We'll recommend products based on those factors and help you balance energy efficiency, durability, aesthetics, and cost to find the right solution for your specific needs.





