The Details Make the Difference

Looking to upgrade your windows in Northern California? Save Energy Co. custom-made windows reduce heating and cooling costs while boosting curb appeal, security, and privacy. Every detail matters, from exact measurements to expert installation to a spotless cleanup, and we believe those details turn a good job into a great one.

That’s why every window we install is custom-made to your exact specifications, backed by trusted warranties, and installed by skilled professionals who treat every home with care, and whether you’re in San Francisco, Marin, Petaluma, Napa, Novato, Sonoma County, or anywhere in the North Bay, we’ve got you covered.

Why Choose Custom-Made Windows

Every home is unique, and so are its window openings. In many cases, custom replacement windows are more affordable than resizing openings to fit standard products. Altering a load-bearing wall can be costly — custom windows slip right in without compromising your home’s structure.

Benefits include:

• Better insulation — no gaps or filler strips.
• Noise reduction — dual-pane glass blocks outside sounds.
• UV protection — prevents fading of furniture and floors.
• Security and privacy — modern locking systems keep you safe.
• Design variety — from bay and bow windows to unique shapes like circle tops and quarter rounds.

Why 1/8 of an Inch Matters

Even being off by 1/8 of an inch can cause poor sealing, drafts, and higher utility bills.

We use 1/8-inch spacing for optimal thermal insulation, giving you:

• Lower energy costs by slowing heat transfer.
• Improved comfort with fewer drafts and stable indoor temperatures.
• Better efficiency for a smaller carbon footprint.

Our installers measure to the nearest fraction, ensuring a perfect, airtight fit. Many other installers will use larger measurements and then “fill-in” the gaps after the installation. This method creates more opportunities for future leaks and cracks. Which is why at Save Energy, we believe the tiniest details matter, and we stand behind our work!

All Our Windows Are Custom-Made

No “off-the-shelf” products here, every window is built for the one it replaces, allowing us to handle the diverse styles of Bay Area homes with flawless results.

Fast, No-Pressure Installation Process

We make it simple:

• Free in-home consultation at your convenience.
• Expert recommendations tailored to your needs and budget.
• Most installs can be done in a day, with trained crews ready to handle surprises like dry rot on the spot.

Our Cleanliness Guarantee

We protect your home during installation and leave it spotless — drop cloths down, debris gone, and work areas vacuumed.

Caring for Your Investment

Maintain your windows by:

• Cleaning glass with non-abrasive solutions.
• Lubricating moving parts annually.
• Checking seals periodically.

We include care instructions and back every project with a Lifetime Workmanship Guarantee plus manufacturer warranties.

Financing & Rebates Available for Custom-Made Windows

We offer competitive financing and can help you claim government energy-efficiency rebates to save even more.

The Save Energy Co. Difference

• • 40+ years serving Marin County, Sonoma County, San Francisco, Napa and the greater North Bay Area
    
  • All custom-made products for a perfect fit
  • Expert installation from factory-trained pros
  • Lifetime warranties on products and workmanship