Frequently Asked Questions (FAQs)
Custom Vinyl Windows
Why Custom Vinyl Windows?
What Are Custom Vinyl Windows?
What is the Difference Between a Double-Hung and a Single-Hung Window?
What Are the Signs I Need Custom Windows?
How Do You Customize My Custom Vinyl Windows?
Vinyl Window Replacement
What Are the Key Warning Signs that I Need Vinyl Window Replacement?
Do Your Custom Vinyl Windows Meet 2026 California Building Codes?
We manufacture and install our own vinyl windows, allowing us to tailor U-Factor, SHGC, and glass packages so projects align with current Title 24 standards while keeping the approval process straightforward.
California Replacement Windows
When Do I Need California Replacement Windows?
What Are Signs You Need California Replacement Windows?
What is the Difference Between a Double-Hung and a Single-Hung Window?
How Can I Maintain My Windows?
Can Energy Star California Replacement Windows Help With My Taxes?
Energy Star–qualified California replacement windows can help with your taxes, and when selected and installed correctly, they can also support long-term home value and code compliance.
With the federal Energy Efficient Home Improvement Credit, homeowners may claim a tax credit for qualifying window upgrades, and in California, those benefits can stack with state requirements and local incentives.
[caption id="attachment_8804" align="aligncenter" width="928"] California Replacement Windows[/caption]
Can Energy Star windows really qualify for a federal tax credit?
They can, as long as the windows meet specific performance standards set by the IRS and the Energy Star program. The credit most homeowners reference is the Energy Efficient Home Improvement Credit under Internal Revenue Code Section 25C.
This credit allows eligible homeowners to claim a percentage of the cost of qualifying improvements made to a primary residence in the United States. Windows are included, but only when they meet the correct Energy Star certification for the applicable region.
We design and manufacture our vinyl windows to meet California-specific requirements, which helps eligibility when homeowners file their taxes.
What is the Energy Efficient Home Improvement Credit in plain terms?
It’s a federal tax credit that rewards homeowners for making energy-efficient upgrades to their homes.
Here’s how it applies to window replacement projects:
The credit equals 30% of the cost of qualifying windows
There is an annual cap of $600 for windows
The credit applies to the cost of the product itself
The windows must meet Energy Star criteria for the correct climate zone
Because we manufacture our windows ourselves, we control performance specifications from the start, which helps align the finished product with federal requirements.
How much can I actually save on my taxes each year?
For California replacement windows, the maximum annual federal tax credit is $600. That means even if your project is larger, the credit will not exceed that amount in a single tax year.
That said, many homeowners still find this worthwhile because:
The credit directly reduces tax liability, not taxable income
It can be claimed every year qualifying improvements are made
It can be combined with other eligible home energy upgrades, each with their own caps
Our role is to help you select window configurations that meet certification requirements so the project qualifies in the first place.
Do all energy-efficient windows qualify for the credit?
No. This is one of the most common points of confusion.
To qualify for the federal tax credit, windows must meet the Energy Star Most Efficient criteria for the specific climate zone where the home is located. A window that qualifies in one part of the country may not qualify in another.
Eligibility depends on factors such as:
U-factor performance
Solar heat gain coefficient
Climate zone designation
California’s zoning system is more granular than most states, which makes precision especially important.
How do California climate zones affect eligibility?
California is divided into 16 climate zones, each with its own performance benchmarks. These zones influence which Energy Star criteria apply.
Rather than using off-the-shelf products, we custom-engineer our vinyl windows to exceed the requirements for the zone where your home is located. That approach helps homeowners avoid installing windows that fail to qualify for tax credits due to regional mismatches.
This attention to zone-specific performance is especially relevant for homeowners investing in California replacement windows who want both compliance and financial incentives.
How do I prove my windows qualify when filing taxes?
Homeowners are responsible for maintaining documentation in case of an IRS inquiry. While documentation is not submitted with the return, it should be kept on file.
Recommended records include:
Manufacturer certification statements
Itemized invoices showing product costs
Proof of payment
Product specifications indicating Energy Star qualification
Because we manufacture our own windows, we can provide clear certification information that aligns with federal requirements.
Is there another tax benefit when I sell my home?
Yes. In addition to the federal energy credit, new windows may also affect your home’s cost basis.
Window replacement is generally considered a capital improvement. That means the cost of the project can be added to your home’s basis, which may reduce capital gains taxes when you sell.
How does increasing my home’s basis help with capital gains?
When you sell a home, capital gains tax is calculated based on the difference between the sale price and the adjusted basis of the property.
Capital improvements can increase that basis, which may:
Reduce taxable gains
Lower overall tax liability at sale
Improve after-tax proceeds from the transaction
While tax outcomes vary, many homeowners keep records of major improvements like window replacement for this reason.
Are there rebates beyond federal tax credits?
Often, yes. Many California utilities offer incentive programs designed to encourage energy-efficient upgrades.
Depending on location and availability, homeowners may find rebates through:
PG&E programs
Southern California Edison initiatives
SoCalGas efficiency incentives
These rebates change frequently, but they are often tied to window performance metrics that overlap with Energy Star and Title 24 standards.
How does Title 24 factor into window replacement?
Title 24 is California’s building energy code, and it sets mandatory performance standards for building components, including windows.
In 2026, these requirements are stricter than in previous years. For homeowners undertaking major renovations, installing compliant windows is not optional—it’s required.
By choosing windows engineered to meet both Energy Star and Title 24 benchmarks, homeowners can align:
Legal compliance
Potential tax credits
Possible utility rebates
This alignment is a key reason many homeowners upgrade to California replacement windows as part of broader remodeling plans.
Does replacing windows help with resale beyond taxes?
While tax benefits are a common motivator, many homeowners also think about resale appeal.
New vinyl windows can support resale by:
Meeting current building codes
Demonstrating documented energy upgrades
Reducing buyer concerns about future replacement costs
Prospective buyers often look favorably on recent improvements, especially when supported by clear records and strong reviews from prior customers.
What types of windows can qualify for tax credits?
Eligibility is based on performance, not style. As long as the window meets Energy Star criteria for the applicable climate zone, it may qualify regardless of configuration.
We manufacture and install a range of vinyl window styles, including:
Single-hung and double-hung windows
Sliding windows
Picture windows
Garden windows
Bay windows
Performance ratings matter more than aesthetics when it comes to tax credits, but homeowners don’t have to sacrifice design to meet efficiency standards.
Does professional installation affect tax eligibility?
The tax credit is tied to the qualifying product, not labor. However, proper installation still matters.
Incorrect installation can compromise performance, which may affect real-world efficiency and long-term durability. Our installation process is handled by our own trained teams, ensuring the windows perform as intended once installed.
That consistency is part of how we help homeowners protect both their investment and their eligibility.
Are these credits available for rental properties?
Generally, the federal credit applies to a primary residence. Rental properties typically do not qualify for this specific credit, though other tax deductions may apply.
Homeowners should consult a tax professional to confirm how their specific situation is treated under current IRS rules.
How do we help homeowners navigate California replacement windows and tax benefits?
Our approach combines manufacturing, design, and installation under one roof. That allows us to control performance, documentation, and compliance at every stage.
When homeowners work with us, we help by:
Designing windows to meet zone-specific Energy Star criteria
Providing clear product certification information
Supporting phased replacement strategies
Ensuring Title 24 compliance for renovations
For homeowners exploring California replacement windows with tax savings in mind, aligning product performance with federal and state standards is the key—and that’s where our services are designed to help.
French Door Handles
Why Buy French Door Handles?
What Are French Door Handles and What Makes Them Different?
Why French Door Locks?
Soundproof Window
What Makes a Soundproof Window?
Product Questions
- What areas do you service?
- We service throughout California from the Bay Area to San Diego, with showrooms in Los Angeles and Santa Clara.
- Do you manufacture your own windows?
- Yes, we make all our windows in our factory in Los Angeles
- Are your products ENERGY STAR compliant?
- Yes, all California Deluxe Windows products (with Argon Gas) meet and exceed the U-Factor and Solar Heat Gain Coefficient (SHGC) requirements for all four climate zones as specified in the ENERGY STAR Program. For more information visit: www.energystar.gov
- How can I get more information about your products?
- For information about our products, you can visit our Windows and Doors page or speak with a California Deluxe Windows representative. We train our representatives with thorough knowledge of the products we offer and how to help you find the best product for your home. You can fill out our Contact Form or give us a call at (855) 583-5473 to speak with a representative about our products.
Warranty Questions
- Is the warranty in effect automatically?
- Yes, once your California Deluxe Windows purchase and installation are complete, your warranty is in effect. You do not have to submit anything. However, we do recommend contacting our Warranty/Services Department at (818)-349-5566 to ensure that our records have your correct contact information. You will receive service for covered claims with or without your warranty booklet.
- Can I transfer my warranty?
- Yes, our warranty is transferable.
- What do I do if I have an issue covered by my warranty?
- To obtain service under your warranty, contact our Warranty/Services Department for help at 818-349-5566.
- Where is the Order Number and Line Number located on my product?
- All California Deluxe Windows products have a label containing the Order number and Line number. The location of the label depends on the window or door type. For help with locating the Order Number and Line Number on your products, go to Locating Your Order Number on our website or contact our Consumer Services Department for help at 818-349-5566.
Care & Maintenance Questions
- How do I clean the vinyl frames on my windows and doors?
- The vinyl frames on your windows and doors can be cleaned with mild, nonabrasive soap and water. Rinse completely with clean water and wipe dry with a soft cloth. NEVER use abrasive or acidic cleaners; they might cause permanent damage to the frame finish.
- What do you recommend to clean the glass?
- To clean the glass on your windows and doors, we recommend mild dish soap and water. Rinse completely with clean water and wipe dry with a soft cloth. NEVER use petroleum-based cleaners, abrasive or acidic chemicals, razor blades, putty knives, abrasive pads, or high-pressure water hoses to clean the glass.
- How do I lubricate my hardware?
- We recommend that you lubricate the hardware once a year. In areas with high salt air, lubricating the hardware at least twice a year is recommended. After the hardware is clean and dried it must be lubricated to restore smooth operation, and in some cases corrosion resistance. Lubricate should be 100% silicone and can be found at most major hardware stores.
What are the vinyl windows of California Deluxe Windows?
They are made from a type of plastic called polyvinyl chloride (PVC). They are known for their durability, energy efficiency, and low maintenance requirements.
Do vinyl windows corrode or rust?
They do not. And this is one of the reasons vinyl windows are some of the best options for custom-made windows in California. They cannot rust, peel, or flake.
Why should I choose vinyl windows over traditional windows?
They offer many benefits over traditional windows, including energy savings, noise reduction, and improved curb appeal. They are also highly customizable and can be designed to fit any style or size of home.
How do I measure for custom vinyl windows?
You do not have to measure them on your own. Contact us to schedule a free in-home consultation. During the consultation, we will accurately measure your windows to obtain the exact dimensions.
What is the lead time for custom vinyl windows?
Lead times vary depending on the complexity and size of your order. Our team will provide you with an estimated lead time when you place your order.
Do you offer installation services?
Yes, we will install the custom vinyl windows you ordered from us. Our team of experienced installers will ensure that your windows are precisely installed and to your satisfaction.
What is the warranty for your vinyl windows?
We offer the best warranty in the industry. The insulated glass has a lifetime warranty against any seal failure. The white and almond vinyl extrusions are covered by our full lifetime warranty. For other colors or laminated vinyl extrusions, they are protected for 10 years.
Are your vinyl windows energy efficient?
Yes, our vinyl windows are designed to be highly energy efficient. They are equipped with features such as low-E glass and insulated frames to help reduce energy costs and improve indoor comfort.
How do I clean and maintain my vinyl windows?
Vinyl windows require minimal maintenance. We recommend cleaning them with a water solution and a mild soap. You should avoid abrasive cleaners or materials that could scratch the surface.
Do all of your windows come with thermal-pane glass?
Yes, all of our windows come with insulated glass. The glass consists of three pieces of glass sealed to a space. It creates an insulated air space resulting in better thermal performance. The glass also reduces condensation while it keeps the heat in during the winter and removes the heat during summer.
What causes condensation in the windows?
Condensation is caused by excess water vapor in the air that comes into contact with a surface, including a window that causes droplets of water. The windows built by CDW are made to keep the surface of the glass warmer and prevent condensation.
What is low emissivity glass?
It provides year-round comfort. It also boosts energy savings. The glass reduces heat gain, thereby, keeping your home colder during summer. It also keeps heat during winter as it reflects heat back into your home.
Do your windows include grids?
Our windows do not always include grids. You need to specify them in your order. Our grids are available in various styles and configurations. In that case, you can pick the pattern and design that suits your home’s architectural style and personal preferences.
What is the difference between a double-hung and a single-hung window?
The main difference between these two types of windows is how the sashes operate. In a single hung window, the top sash is fixed. The only way to move it up or down is through the bottom sash. The double-hung window, on the other hand, has both top and bottom sashes that you can open and close independently.
Between double-hung windows and sing-hung windows, which ones are more energy-efficient?
Both types are energy efficient. Our team ensures that they are properly installed. Proper installation is vital for your windows’ energy efficiency. Double-hung windows offer better ventilation features, however. Because of that, they provide better airflow that can regulate the temperature in your home and reduce your reliance on heating and cooling systems.
Can I install the windows myself?
You can install the windows yourself. But we do not recommend it. Our team of windows installers will ensure that the job is done correctly. Because they know how to accurately install the custom windows we make, they can avoid potential damage to your home.
Do you also offer custom doors?
Yes, we offer a range of custom doors, including French doors, interior doors, entry doors, sliding doors, and more. They are made from materials that will make your home more energy efficient.
How long will it take to receive my custom doors from CDW?
The timeframe for getting your custom door will depend on a variety of factors, including the sophistication of the design, the availability of the production schedule, and the materials used. We strive to deliver your door in a few weeks from the time of order. However, the timeframe may vary depending on the specific details of your order.
How do I maintain my custom door?
Proper maintenance is key to keeping your custom door in good condition. We recommend cleaning it regularly with a soft cloth and mild detergent and inspecting it periodically for signs of wear or damage. Make sure to lubricate the hinges and other moving parts with a silicone-based lubricant to ensure that it keeps operating smoothly.
What is the warranty on your custom doors?
We stand behind the quality of our custom doors and offer a limited warranty on all our products. The specifics of the warranty will depend on the type of door and the materials used, so please contact us for more information.
Do you have a showroom that I can visit?
Yes, we have showrooms that let us serve Southern California. When you visit our location, you can talk to our knowledgeable representatives who are trained in all aspects of the performance and design of our windows and doors. They are ready to assist you with your home improvement needs.