California Energy Consultant Service
Energy-efficient window and door installations that keep your home cooler in summer, warmer in winter, and quieter year-round. Family-owned and licensed in California.
Licensed & Insured · Lic. #627677
Drag to see the transformation
About Us
For more than 40 years, California Energy Consultant Service (CECS) has helped Sacramento homeowners improve the comfort, efficiency, and value of their homes. What began as a family-founded insulation company in 1981 has grown into a trusted home improvement contractor specializing in windows, doors, siding, roofing, HVAC, and insulation.
Why Upgrade?
CECS installs premium, energy-efficient windows and doors that transform your home's comfort, appearance, and value — backed by trusted manufacturer warranties and 40+ years of experience.
No interest, no payments for 12 months — available for qualified homeowners.
*Minimum 5 windows. Subject to credit approval. Cannot be combined with other offers.
Our Work
Real installations, real homes, real craftsmen — a look at our crews across Northern California.
How It Works
We assess your windows and provide a no-obligation quote
Precision measurements for custom-fit windows
Professional install, usually completed in one day
We inspect everything and ensure your satisfaction
Premium Products
We partner with industry-leading manufacturers to bring you the best in energy efficiency, durability, and style.
Low maintenance & affordable
Classic beauty & warmth
Maximum durability
Expand your view
Smooth & space-saving
Easy to clean & operate
We also install sliding patio doors, French doors & more
Get a Free QuoteReviews
1 review · 2 photos
awesome, fast work! alonso and omar came to my place, got all the windows done in just a couple hours, and did a great job! so much better than i had before, very excited for the noise reduction and better seal for insul…
9 reviews · 2 photos
I couldn't be happier with the complete exterior transformation performed on the back of my house, chimney, and the installation of a brand-new window. From start to finish, their team delivered outstanding craftsmanship…
Local Guide · 18 reviews
I just had all the windows in my house replaced by California Energy Consultant Service. This job included 2 sliding glass doors and the modification of a garden window to a single pane window. I am so happy with my new…
Local Guide · 1 review · 10 photos
Exceptional Service from Start to Finish!
I spent a really long time researching companies for our massive project (replacing 28 windows and 1 sliding door), and I am so glad we chose CECS. The job was completed perfectly in just 3 days. Dave (Sales) was excell…
3 reviews
Great price
We are very happy with our large window and patio door replacement project completed by the California Energy Consultant Service team. They were highly recommended by two of our neighbors. Ismar, Jose, Alonso, Omar, Joh…
4 reviews · 4 photos
Great price
CECS replaced all of the windows in my rental unit and installed 2 sliding glass doors. They did a great job and kept the work site clean and organized. Alonso and Roger were great to work with along with my salesman, Fe…
Benefits
Lower bills with double & triple pane glass
Full coverage on materials and labor
STC-rated glass blocks outside noise
Modern styles that boost home value
Licensed, insured Sacramento professionals
Measured & built for your exact openings
FAQ
Everything Sacramento homeowners ask before replacing their windows.
Still have questions?
Request a Free ConsultationFree Quote
Answer 3 quick questions to receive a personalized quote.
