Energy-efficient windows, explained without the marketing
Two numbers on a sticker decide how your windows perform. Once you know what they mean, you can compare any two quotes in about a minute.
U-Factor — how much heat escapes
Lower is better. It measures how readily heat passes through the whole assembly, frame included. It matters most on cold nights and in the Inland Empire’s winter swings.
SHGC — how much sun gets in
Solar Heat Gain Coefficient, also lower-is-cooler. In Southern California this is usually the number that decides whether a west-facing room is usable at 4pm in August.
Both numbers are printed on the NFRC label attached to every window we install. If a competitor cannot show you theirs for the exact unit they are quoting, you are being sold a claim rather than a product.
Compliance is not optional — and it protects you
Title 24 sets minimum energy performance for windows and doors in California. It is why the permit and inspection process exists, and it is the reason a compliant installation is worth more when you sell.
- Every unit we install meets Title 24
- Tested by AAMA and NFRC, ENERGY STAR approved and rated
- Meets or exceeds ENERGY STAR in all climate zones — coastal, inland and desert
- Eligible for state and federal energy tax credits
- We pull the permit and manage the inspection
What you will actually feel
Energy savings are real, but they arrive slowly — a lower bill each month rather than a dramatic moment. What homeowners notice in week one is comfort:
- The hot room becomes usable. The west-facing bedroom or office that was unbearable after 2pm evens out with the rest of the house.
- The AC cycles off. When the envelope stops leaking, the system stops running continuously against the sun.
- The house gets quieter. Properly sealed dual-pane glass takes the edge off traffic, aircraft and yard equipment.
- No more drafts or condensation. Fog between the panes means a failed seal — a symptom, not a cleaning problem.
- Furniture and floors stop fading. Low-E coatings filter a large share of the UV that bleaches hardwood and upholstery.
Actual savings depend on your existing windows, orientation, insulation, HVAC and how you use the house — which is why we will not print a dollar figure we cannot stand behind.
Energy & compliance questions
Our windows and doors are engineered to meet or exceed ENERGY STAR standards in all climate zones and meet California Title 24. That makes them eligible for state and federal energy tax credits and for most utility rebate programs. We give you the NFRC labels and documentation you need to file — confirm current credit amounts with your tax preparer, since the programs change.
Yes. Every window is tested by AAMA and NFRC and is ENERGY STAR approved and rated. Every unit ships with its NFRC label showing U-factor and Solar Heat Gain Coefficient so you can verify exactly what you bought.
In most Southern California cities, yes — window and door replacement is a permitted job, and egress and safety-glazing rules apply to bedrooms, bathrooms and anything near a door or floor. We handle the permitting process as part of the project so it is inspected and legal.
Get a real number for your house — free.
We measure every opening, check your frames and stucco, and leave you with an itemised written quote. No same-day-only pricing. No obligation.
- Written, itemised pricing before anything is ordered
- Custom sizing at no extra charge and no extra lead time
- Full lifetime warranty including glass breakage
Book your free estimate
Tell us what you’re replacing and we’ll bring real numbers to your door.