HUGE SAVINGS: Get the 30% Tax Credit Upfront* 🔒 Secure this Deal

Book NowSemper Solaris - Roofing, HVAC, Solar, Home Batteries, and Window Installer

What can we help you with?

Back to Education Center

Should I Invest in Energy-Efficient Windows in San Diego?

Living in San Diego comes with sunshine, ocean breezes, and smart home improvement opportunities. Among the most overlooked upgrades are your windows.

So, should you invest in energy-efficient windows in San Diego? Yes, and here’s why.

Installing energy-efficient windows reduces energy costs. It also improves comfort and the home's resale value. These upgrades offer long-term benefits that go far beyond aesthetics.

Why Energy-Efficient Windows Matter

Energy-efficient windows reduce heat transfer. That means your home stays cooler in summer and warmer in winter.

They use the best materials to keep your house cool. This includes layers of glass, Low-E coatings, gas fills, and tight seals. Durable window frames add insulation and help prevent drafts.

Many of these windows have huge energy savings. For instance, ENERGY STAR certified windows are approved by the Department of Energy. They’re also rated by the National Fenestration Rating Council.

San Diego has a mild, sunny climate. That means more homes need cooling than heating. Energy-efficient windows limit solar heat gain, lowering your AC workload and energy costs.

They’re very helpful in rooms with west- and south-facing windows. With less heat coming in, your HVAC system lasts longer too.

The Case for Replacing Existing Windows

Many pre-1990 homes still use single-pane windows. These offer very little insulation or noise control.

Replace single-pane windows with energy-efficient models to reduce bills. You’ll also improve your home’s comfort and resale value.

Not sure if you need replacement windows? Look for signs: Drafts, temperature swings, or fogging between panes. And if your frames are rotting, it's time for an upgrade.

But there’s more. Less energy spent helps your wallet and the planet. It lowers strain on the power grid, too. When you install efficient windows, you cut greenhouse gas. In turn, that makes cleaner air and a smaller carbon footprint.

If you want a sustainable home, start with windows. They accomplish both environmental and financial goals.

Types of Energy-Efficient Windows to Consider

Choosing the right type of windows depends on your home's layout, sun exposure, and budget. Each option brings different performance levels.

Double-pane and triple-pane glass trap air or gas between layers. Triple-pane models are more cost-effective in the long run, especially for larger homes.

Low-E coatings reflect heat while allowing natural light through. These coatings reduce the solar heat gain coefficient (SHGC) without darkening your rooms.

Gas fills such as argon or krypton improve insulation between panes. These denser-than-air gases slow heat transfer and increase energy savings.

Window frames also matter. Vinyl and composite frames provide better insulation than aluminum and require less upkeep.

What About Installation?

Even the best window won’t perform well without proper installation. How you install affects energy use as much as the product itself. Look for licensed, insured contractors who specialize in replacing single pane windows. Choose one familiar with local San Diego climate conditions.

Make sure they offer energy star certified windows and solid warranties. A good installer ensures long-term comfort and cost-effectiveness.

To increase energy savings, combine new windows with other energy upgrades. This strengthens your home’s thermal envelope, cooling it. You can seal air leaks around doors to stop unwanted drafts. Then, consider insulating your attic to prevent heat loss.

Make sure your HVAC system is tuned for performance. These updates work well alongside installing energy-efficient windows.

Natural Light Without the Heat

San Diego enjoys sunshine year-round. That’s great for natural light but challenging when it comes to indoor heat.

Energy-efficient windows let in light without too much warmth. The right SHGC rating makes this balance possible. You’ll enjoy bright interiors while keeping your living spaces cool and comfortable. It’s one of the best benefits of an upgrade.

Ratings Defined

Every energy-efficient window should come with a label. Ratings from the National Fenestration Rating Council make comparing models easier.

Here are terms you may see on labels:

U-factor: How well a window retains heat. Lower is better for insulation and winter performance.

Solar heat gain coefficient (SHGC): How much solar heat enters your home. A low SHGC is cooler in warm climates.

Visible Transmittance (VT): Amount of natural light that passes through. Higher VT means brighter interiors.

Air Leakage: How well the window seals. A low number means fewer drafts and more stable temperatures.

Final Verdict: Should You Invest?

Yes! If you're a homeowner in San Diego, energy-efficient windows offer comfort, savings, and long-term value. 

The right type of windows (combined with expert installation) creates an instant upgrade. You'll see the difference right away.

Ready to take the next step toward a more energy-efficient home? Get a free estimate on high-performance windows today.

Infographic showing the cost of energy efficient windows in San Diego in 2025

Other articles you might be interested in:

Ready to take the next step?

Contact Semper Solaris and make the right choice for your home.
Get started
Chat
Call
Book Now
Get $550*
Refer a friend
*On approved credit. 30 percent based on eligibility; consult your tax advisor. No hard credit pull. **Must be an active SDCP residential customers and must have contract dated 09/30/25 or after to qualify. Entire battery system must be a new system and must be discharging 50% or more of your battery during the required peak times. Batteries must be fully charged by on-site solar. Battery cannot simultaneously be participating in any other active demand response programs. All projects are subject to a sizing tool to determine if there will be enough excess solar to charge the proposed battery system. Must purchase $15,000 or more to qualify. †Tesla Powerwall 3 must be purchased between 11/01/25-03/31/26. Must register for the rebate through the Tesla rebate portal by 03/31/26 to qualify. ‡Savings based on size of roof. Cool Roof upgrade with roof replacement only. μPresent this at the time of your appointment. §Unlimited referrals accepted. Maximum awarded amount per new customer is $550 for referrals that purchase. Referral name must be supplied by referrer, referral amount paid after completion of the installation and payment.
 
For all offers: Cannot be combined with any other offers. New customers only, some restrictions apply. See here for more information on warranties. Semper Solaris is the fastest of installers that installed 10,000+kW in the 12 months prior according to the most recent Ohm Analytics California Monthly Report. Offer Expires 02/28/26
©2026 Semper Solaris. All Rights Reserved. CSLB #978152 | #1083681 | Privacy Policy | Call +1 (888) 210-3366

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

California Privacy Policy (CCPA)

California residents: can request Do Not Sell My Information. Please visit our privacy policy to learn how we use your information. You will receive emails, and text messages periodically and can opt-out at any time. calls and chats are recorded.

magnifiercrossmenu