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 25-year transferable warranty.
4.9★
3,200+ verified reviews
12,000+
OC homes served
1-Day
installation
25-Year
transferable warranty
HOA & Permit Note for Westminster
Westminster is predominantly non-HOA. Standard city permit process applies where required.
Window Types Available in Westminster
All windows are triple-pane, low-E coated, argon-filled, and ENERGY STAR® certified. Starting prices per unit.
Double Hung
$219/unitBoth sashes tilt in for cleaning. Most popular choice for Orange County homes.
U-Factor: 0.17
Sliding
$259/unitHorizontal operation with lift-out sash. Great for wide openings.
U-Factor: 0.18
Picture
$249/unitFixed glass, best U-Factor available. Unobstructed views with zero air leakage.
U-Factor: 0.13
Awning
$269/unitTop-hinged, opens outward. Ventilates in rain — popular in coastal OC.
U-Factor: 0.16
Casement
$289/unitCrank-operated with compression seal. Excellent energy performance.
U-Factor: 0.15
Bay & Bow
$1,850/unitExtends outward for panoramic views. Premium architectural option.
U-Factor: 0.19
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?
Double hung windows starting at $219/unit 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.
Spring Sale — 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 10% off installation labor before May 31.