Our Guarantee & Warranty - Lightwell Windows San Francisco

The Lightwell Windows San Francisco Guarantee

A guarantee only matters if it changes what happens when something goes wrong. Ours does. Every window replacement, window installation, and door installation we complete in San Francisco carries the 365-Day Done Right Promise: if the finished work is not right, Lightwell makes it right. No debate, no countdown, no “that’s normal settling” conversation. We also put a written price in your hands before any work starts, every time, and we stand behind that number. The crew arrives background-checked and uniformed. The floors stay clean. The cleanup gets photographed before we leave. That’s the whole promise, in one paragraph.

Call (831) 480-4124

What’s Covered

These are the commitments we make on every job in San Francisco, from a single sash replacement in Noe Valley to a full-home window package in the Richmond.

• Workmanship. If the installation itself has a flaw, whether it’s an uneven reveal, a draft at the frame, or a door that doesn’t latch cleanly, we fix it within the 365-day window with no charge for labor.
• Parts handling. When a window or door arrives with a manufacturer defect or gets damaged between the truck and the opening, we manage the replacement and coordinate the correction so you’re not the one chasing a warranty claim.
• Cleanup. Shoe covers and drop cloths go down on every visit, no exceptions, and we send you a photo of the finished cleanup before the crew pulls away.
• On-site behavior. Our technicians follow the C.A.R.E. values on every visit: Clean up like it’s our own home, Ask before we move or touch anything, Respect your family’s time and quiet hours, and Explain the price before the work.
• Honest pricing. The written price you approve is the price you pay. No change orders appear mid-job unless you ask for something different, and even then, the new number is in writing first.
• Products we stand behind. We install from eight manufacturers, PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux, so the recommendation fits your San Francisco home, not our preferred vendor’s inventory sheet.

Our Satisfaction Promise

If you’re not satisfied, the process is straightforward. Call us. A live person answers, 24/7, not a voicemail maze. You’ll describe the problem, and we’ll schedule a visit to look at it. If the finished work isn’t right, we make it right, full stop. That means redoing the work, adjusting the hardware, replacing the defective part, or whatever the specific situation calls for, at our cost, within that 365-day window. The promise is baked into every job we do, not just the easy ones. We’re part of the Cedarwell network, and we’ve been operating to the Cedarwell Care Promise since 2010, which is why this doesn’t feel like a special concession to us. It’s just how the job gets done. A light well is what brings daylight deep into a building, and that’s what a well-installed window should do for your home, too. If it isn’t doing that, we haven’t finished.

Licensed & Insured Backing

Paperwork is the part of a guarantee nobody wants to think about, but it’s the part that actually protects you. Lightwell Windows San Francisco is licensed and insured to perform window and door work in San Francisco, so the installation is covered by real standing, not just a handshake. If a crew member is injured on your property, our insurance handles it. If something goes wrong with the workmanship, the 365-Day Done Right Promise applies, and the licensed, insured standing underneath that promise means we’re accountable in a way an unlicensed crew simply isn’t. We will not invent a license number to print here, but we’ll gladly provide the documentation with your written estimate. Keith Yamada, Owner, oversees every project that goes out under the Lightwell name in San Francisco.

What a Guarantee Can’t Cover, and What We Do Anyway

We believe in being specific about what a guarantee does and doesn’t do. The 365-Day Done Right Promise covers our workmanship, the installation itself. It does not override the manufacturer’s warranty terms on the window or door products, which vary by brand and product line. What we do is help you understand those manufacturer terms before you buy, and we coordinate with the manufacturer when a product issue comes up. You’re never left emailing a warranty department alone. That’s the difference between a company that sells windows and a company that stands behind the whole job.

Questions Homeowners Ask About Our Guarantee

What does the 365-Day Done Right Promise actually cover?

It covers the quality of our installation work for a full year after completion. If something about the finished work isn’t right, whether it’s a draft, a misaligned sash, or a door that binds, we fix it at no charge for labor or parts we supplied. Call (831) 480-4124 and we’ll get it scheduled.

Will the price change once the work starts?

No. The written price you approve before work starts is the price you pay. The only way the number changes is if you ask for additional work, in which case you get a new written price before we proceed. No surprises at the end.

Who is actually in my home doing the work?

Background-checked, uniformed Lightwell technicians. You’ll know who is at your door before they knock. They follow the C.A.R.E. values on every visit: Clean up like it’s our own home, Ask before we move or touch anything, Respect the family’s time and quiet hours, and Explain the price before the work.

What if something goes wrong at night or on a weekend?

Call us. A live person answers the phone 24/7, not a recording. We’ll take down what’s happening and get it handled. That applies whether it’s a window that won’t close before a storm or a question about an invoice.

Do you protect my floors and furniture during the job?

Yes. Shoe covers and drop cloths go down on every visit, without exception. We use pet-safe products wherever there’s a choice, and we keep the work area contained so dust and debris don’t migrate through your San Francisco home. You’ll get a photo of the cleanup before the crew leaves.

Written by Keith Yamada, Owner at Lightwell Windows San Francisco, serving San Francisco since 2010.