Orange County Window Replacement
Window Replacement in Westminster, CA
Westminster shares postwar development characteristics with neighboring Garden Grove and Anaheim, with most homes built between 1950 and 1975. The city's homes frequently still have original aluminum single-pane windows, and the area's proximity to the coast means elevated humidity adds to window degradation.
Tesla Windows serves Westminster homeowners with triple-pane, ENERGY STAR® certified vinyl windows — installed in a single day, with a limited double-lifetime transferable warranty.
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HOA & Permit Note for Westminster
Westminster is predominantly non-HOA. Standard city permit process applies where required.
Windows & Patio Doors Available in Westminster
All windows are triple-pane, low-E coated, argon-filled, and ENERGY STAR® certified. Malibu patio doors include SunMatrix / QuadraTherm glass with Argon Gas. Sample prices below assume typical sizes — your free in-home estimate gives the exact number.
Catalina Single Hung
Classic vertical operation with movable bottom sash. Most popular choice for Orange County homes.
from $810 — typical 36″ × 48″ window
U-Factor: 0.23
Catalina Single Slider
Smooth horizontal operation. Great for wide openings.
from $840 — typical 36″ × 48″ window
U-Factor: 0.23
Catalina Picture
Fixed glass for maximum views and excellent energy performance.
from $750 — typical 36″ × 48″ window
U-Factor: 0.21
Panoramic Single Hung
Slim-frame design with more visible glass and more daylight.
from $840 — typical 36″ × 48″ window
U-Factor: 0.23
Panoramic Single Slider
Slim-frame slider for wider openings and more natural light.
from $850 — typical 36″ × 48″ window
U-Factor: 0.23
Panoramic Picture
Slim-frame fixed glass. Maximum view design and high efficiency.
from $770 — typical 36″ × 48″ window
U-Factor: 0.22
Malibu Sliding Patio Door
Premium sliding patio door with smooth-glide operation and strong solar heat control.
from $2,680 — typical 72″ × 80″ door
U-Factor: 0.25
Malibu French-Style Patio Door
Classic French-door look with modern sliding-door performance. Great for patios and backyards.
from $4,300 — typical 60″ × 80″ door
U-Factor: 0.27
How Window Replacement Works in Westminster
Free 60-Second Online Estimate
Get a ballpark range instantly — no contact info required. Understand your approximate cost before committing to anything.
Free In-Home Measurement
Our specialist comes to your Westminster home (30–45 minutes). They measure every opening, walk you through your options, and give you an exact written quote on the spot. No pressure.
1-Day Professional Installation
Our crew arrives in the morning and installs all your windows in a single day. We handle all preparation, installation, and cleanup — including haul-away of every old window.
Frequently Asked Questions — Westminster Window Replacement
Do you serve all of Westminster including Little Saigon area?
Yes. We serve all Westminster neighborhoods. The Little Saigon corridor includes a mix of commercial and residential properties, and we work with homeowners throughout the area.
What's the most cost-effective window upgrade for a Westminster home?
Catalina Single Hung windows (a typical 36″ × 48″ window starts around $810) are our best sellers for exactly this reason — they fit the standard openings in 1950s–1970s tract homes, require no structural modification, and deliver a dramatic efficiency improvement over original aluminum windows.
How do I know if my Westminster home qualifies for ENERGY STAR windows?
All Tesla Windows products are ENERGY STAR certified for Southern California's climate zone. If your current windows are older than 20 years and single-pane, you will qualify for the efficiency improvement regardless of your current window type.
Memorial Day Event — Ends May 31
Ready for a Free Estimate in Westminster?
Our specialist measures every opening and gives you an exact written quote before leaving. Lock in our Memorial Day offer — buy 3 windows, get 1 free — before May 31.