Spring Sale — Book by May 31 and save 10% on installation labor. Claim Offer →
4.9★ · 12,000+ Homes · ENERGY STAR® Certified

Stop Losing Money
Through Old Windows.
Save Up to 30%.

The average homeowner saves $420/year on heating and cooling. Triple-pane, ENERGY STAR® certified — installed in one day.

  • Free in-home estimate — zero pressure
  • 1-day professional install
  • Quieter home — triple-pane blocks outside noise
  • 25-year transferable warranty
4.9 from 3,200+ reviews

Get an Instant Price Estimate

Takes about 60 seconds — no commitment

  1. 1
  2. 2
  3. 3
  4. 4

Step 1 — Select Window Type

  • ENERGY STAR® Certified
  • BBB A+ Accredited
  • 12,000+ Homes Upgraded
  • 4.9★ Customer Rating
  • Licensed & Insured
30%
Energy Savings
vs. single-pane windows
12K+
Homes Upgraded
across Southern California
4.9★
Customer Rating
from 3,200+ reviews
25yr
Warranty
parts, glass & labor
The Process

Simple from Start to Finish

No surprises, no pressure. Most homeowners go from first quote to installed windows in under two weeks.

1

Get an Instant Estimate

Use our 60-second online quote tool to see a ballpark price range for your windows — no contact info required.

2

Free In-Home Measurement

Our specialist visits your home, measures every opening, and walks you through product options — zero obligation, zero pressure.

3

1-Day Professional Install

Your crew arrives in the morning. Most homes are fully installed by afternoon — prep, install, and cleanup included. We haul away every old window. You do nothing.

Ready to get started?

Use our online tool for an instant estimate — takes 60 seconds, no contact info needed.

Start My Estimate
Why Energy Ratings Matter

Your Windows Are Costing You Money

Up to 30% of your home's heating and cooling escapes through poorly insulated windows. Here's what the numbers mean — and what replacing them puts back in your pocket.

U-Factor Comparison (lower = better insulation)
Old single-pane Typical 1980s home
1.10
Standard double Builder-grade 2010s
0.50
Tesla Windows Our triple-pane product
0.15
$420
Average annual savings
vs. old single-pane windows in a 1,500 sq ft home

U-Factor: Heat Transfer Rate

Measures how quickly heat passes through the window assembly. Our triple-pane design achieves U-0.13–0.19 — far below the ENERGY STAR® requirement of 0.27.

SHGC: Solar Heat Control

Controls solar radiation entering as heat. Our low-E coating reflects infrared while letting in visible light — cool in summer without darkening your rooms.

Argon Gas Fill

Argon between panes conducts heat 34% less efficiently than air — dramatically boosting insulation without adding visible thickness or reducing light transmission.

Warm-Edge Spacer Technology

Foam-based spacers eliminate thermal bridges at frame edges — no cold spots, no condensation, less heat loss around the perimeter where it matters most.

Customer Stories

Real Homeowners. Real Results.

Over 3,200 verified reviews across Google, Yelp, and BBB — averaging 4.9 out of 5 stars.

"My home is very sound proof now. Cooler summer temperatures, holds heat much better in winter. The windows are way better quality than the big box competition — the appearance is a high end look. My overall experience was a 10."
AB
Al B.
Lakewood, CA
12 windows + french door
"Very helpful and accommodating. Respectful of our home while doing the job and willing to work on the price with us. We are very happy with the job and feeling warmer and quieter indoors now."
SA
Sebastian A.
San Gabriel, CA
Warmer & quieter
"The crew removed and installed 14 windows and 3 sliding doors in about 7 hours. Everything looks and works great — we couldn't be happier. The price was the best of the 3 estimates we obtained."
MM
Maryanne M.
Orange County, CA
14 windows + 3 doors, 7 hrs
Our Windows

Choose the Perfect Window

Every Tesla Window uses triple-pane low-E glass and insulated vinyl frames engineered for maximum energy efficiency — backed by our 25-year warranty.

Best Seller

Double Hung Window

Both sashes tilt in for easy cleaning — our best-seller for any room.

0.17
U-Factor
0.23
SHGC
  • Triple-pane low-E glass
  • Argon gas fill
  • Tilt-in for easy cleaning
  • ENERGY STAR® certified
Lowest U-Factor

Casement Window

Crank-operated side hinge. Superior seal and maximum ventilation.

0.15
U-Factor
0.21
SHGC
  • Compression seal when closed
  • Full-view sightline
  • Multipoint locking
  • Best air infiltration rating
Premium

Bay & Bow Window

Extends outward for panoramic views and extra interior space.

0.19
U-Factor
0.25
SHGC
  • Structural support seat board
  • Insulated roof & knee wall
  • Panoramic views
  • Custom sizing
Best Clarity

Picture Window

Fixed glass for unobstructed views — lowest U-Factor of any type.

0.13
U-Factor
0.20
SHGC
  • Lowest U-Factor available
  • Maximum solar heat control
  • Custom shapes
  • Zero air leakage
Wide Openings

Sliding Window

Smooth horizontal operation — great for wide openings.

0.18
U-Factor
0.24
SHGC
  • Lift-out sash for cleaning
  • Anti-lift security stops
  • Available in XO & OX
  • Roller glide system
All-Weather

Awning Window

Hinged at top, opens outward — ventilates even during light rain.

0.16
U-Factor
0.22
SHGC
  • Rain-while-open ventilation
  • Compression seal when shut
  • Pairs with picture windows
  • High placement friendly
FAQ

Common Questions

Everything homeowners typically want to know before they decide.

How long does installation take?
Most homes are completed in a single day. Larger projects (10+ windows) typically take 1–2 days. Our crew handles all prep, installation, and cleanup — you don't need to do anything.
What does the 25-year warranty cover?
The warranty covers the glass seal against failure (fogging), the vinyl frame and sash against defects in materials or workmanship, and labor for any warranty repair visit. It is fully transferable to the next homeowner.
Do you offer financing?
Yes. We partner with GreenSky® to offer 12-month same-as-cash and low-monthly-payment plans. Ask your consultant for current rates during your free in-home estimate.
How do I know which window type is right for my home?
Our in-home specialist will walk you through each option based on your opening sizes, ventilation needs, and budget. You can also compare styles using our online product guide.
Can I get a quote without a home visit?
Yes — our 60-second online tool gives you a ballpark range instantly. For a binding price, we'll need to measure your openings in person at your free in-home appointment.
Are your windows really ENERGY STAR certified?
Yes. Every Tesla Window product line is independently tested and certified to meet ENERGY STAR® Northern Climate requirements. Certification documents and performance ratings are available on request.
Do you pull permits and handle HOA approval?
We handle permit applications in all jurisdictions where permits are required. For HOA approvals, we provide documentation packets and material samples to support your submission.
What happens if a seal fails or glass breaks after installation?
A failed seal (fogging between panes) or accidental glass breakage is covered under warranty at no cost to you. We'll schedule a service visit, replace the affected unit, and handle the installation.
What affects my final price — and how accurate is the online estimate?
Final price depends on window count, size, style, and any structural work needed. The online estimate is typically within 10–15% of the final quote. Your in-home measurement appointment locks in the exact price.
I've been meaning to replace my windows for years. When's the right time?
Every month you wait is another month of higher energy bills. At $420/yr average savings, a year of delay costs roughly $35/month. The second best time is now — especially with 10% off installation labor through May 31.
How do you compare to window programs from Home Depot or Lowe's?
Our customers frequently get estimates from both before choosing Tesla Windows. What they find: our pricing is comparable or lower, our triple-pane products exceed what big-box programs offer as standard, and — unlike retail programs — we handle permits and HOA paperwork in-house. You work with one team from estimate to warranty claim.

Still have questions?

Call us at (714) 208-0172
Spring Sale Ends May 31

See Your Savings in 60 Seconds

No commitment, no sales call to start. Book this month to lock in 10% off installation labor — offer expires May 31.

Get an Instant Price Estimate

Takes about 60 seconds — no commitment

  1. 1
  2. 2
  3. 3
  4. 4

Step 1 — Select Window Type

Call Free Quote