Window Guides: Everything We Have Written About Windows

We have written a lot about windows over the years: glass, frames, brands, codes, and the problems that make people start looking. This page gathers every one of those guides by topic so you can go straight to the one that answers your question.

Start here

If you are early in the process, these four cover the ground most people need first. For the service itself — what we install and how — see our window replacement guide.

• Window replacement cost in Sacramento and the Bay Area — what drives the price per opening, by frame material and install method.
• How to compare window replacement quotes — why three quotes for one house disagree, and how to put them on the same list.
• When is the best time to replace windows? — seasonal pros and cons for scheduling the work.
• How often should you replace windows? — typical service life and the signs a window is done.

Is something wrong with my windows?

Start from what you are seeing. Several of these problems have a cheaper fix than a new window, and these guides say so.

• Why windows fog up between the panes — what a failed seal means, and why it cannot be wiped away.
• Condensation on the inside of windows — causes, DIY fixes, and when it points to the window rather than the room.
• The causes and prevention of window condensation — the humidity side of the problem and how to reduce it.
• Reducing heat loss through windows and doors — finding the drafty openings and the options short of replacement.
• Upgrading from single-pane to dual-pane windows — what older single-pane glass costs you in comfort and noise.
• Window film vs. window replacement — what film genuinely fixes, what it cannot, and the glass-warranty question.
• What are storm windows? — interior and exterior types, and when they beat full replacement.
• Window screen replacement and repair — repair or replace, which mesh to choose, and how to measure.

Retrofit or full-frame replacement

The installation method matters as much as the window. It changes the price, how much of the wall is disturbed, and whether a permit is needed.

• Are retrofit windows any good? — the pros and cons of fitting a new window into the existing frame.
• Retrofit vs. new-construction windows — how to choose between the two install methods.
• Do you need a permit for retrofit windows in California? — when a permit applies and who should pull it.

Energy efficiency, Title 24 and rebates

California’s energy requirements for replacement windows changed on 1 January 2026. For the current requirement, use what Title 24 requires of your new windows, which cites the code directly.

• What Title 24 requires of your new windows — the current requirement for homes, the small-job exception, and how to check a quote.
• What is Title 24 of the California Code of Regulations? — background on the code and what it covers.
• How to read an NFRC window label — the five numbers on the sticker and which matter in your climate.
• Best energy-efficient windows for Sacramento homes — comparing products on their rated performance for a hot climate.
• What are the best windows for cooling? — glazing and window styles that help in summer heat.
• Are triple-pane windows worth it in Sacramento? — why the answer depends on which way the heat is moving.
• How your windows affect HVAC efficiency — the link between glazing and heating and cooling load.
• ENERGY STAR windows — what the label means and how savings are estimated.
• SMUD and PG&E rebates for window replacement — how utility programs work, and why pre-approval timing matters.

Glass options

Glass is where most of a window’s performance, privacy and safety is decided.

• Types of window glass and their benefits — Low-E, tempered, laminated, tinted and more.
• Window glass types: pros and cons — a shorter comparison for choosing by room.
• Obscure and privacy glass — patterns, how much privacy each gives, and where it fits.
• Types of soundproof windows — laminated glass, inserts and STC ratings for noisy streets.
• Milgard SunCoat glass — how this Low-E coating is meant to work.

Safety codes: tempered glass and egress

Some windows are required to use safety glass or to be large enough to escape through. These guides explain where.

• California tempered glass requirements — where the building code calls for safety glazing.
• Understanding tempered glass requirements — the hazardous locations explained, with FAQs.
• California egress window requirements — size and sill-height rules for bedroom windows.

Window styles

How a window opens decides how it ventilates, how easy it is to clean, and what it looks like on the house.

• How do I choose a window style? — architecture, function, energy and budget.
• Why double-hung windows? — the classic two-sash window and what it is good at.
• Awning windows — ventilation even in light rain, and where they suit.
• Sliding windows — why sliders suit wide openings and modern homes.
• Garden windows — a projecting window for kitchens and plants.
• Special-shape windows — arches, circles and custom geometries.
• Best window styles to pair with James Hardie siding — combinations for modern, traditional and craftsman houses.
• Exterior window trim guide — trim styles, materials and installation.
• Our window styles and options — the styles and materials we install.

Frame materials

Frame material is the biggest single driver of price and of how the window ages.

• Fiberglass vs. vinyl windows — price, durability and efficiency compared.
• Aluminum windows: advantages and disadvantages — where aluminum works and where it falls short.
• Wood windows — the pros and cons of wood frames.
• Vinyl windows in Sacramento — the vinyl options we install.
• Window types and materials from Milgard — one manufacturer’s range, explained.

Brands and product lines

Guides to specific manufacturers and series. Features and warranties are set by each manufacturer, so confirm the current terms for the exact product on your quote.

• Milgard windows — the Milgard lines we install and how they compare.
• Milgard Style Line — features, design options and installation.
• Milgard V400 Tuscany Series — a vinyl series for Elk Grove homes.
• Milgard windows for Bay Area homes — fog, heat and seismic considerations.
• Milgard windows and summer cooling costs — glazing choices for hot inland summers.
• James Hardie siding with Milgard windows — replacing siding and windows as one project.
• Ply Gem windows — the Ply Gem products we install.
• Ply Gem East Premium Series — a premium series for Bay Area homes.
• Anlin Coronado Series — a vinyl series for Sacramento-area homes.
• Anlin Designer Black — black frames: design options and upkeep.
• Amsco Artisan Series — styles and customization.
• Amsco Studio Series — features and benefits.
• Simonton vinyl windows — a vinyl option for Bay Area homes.
• Aluminum Series windows — a slim-frame aluminum option.

Apartments, HOAs and commercial buildings

Replacing windows across an occupied building is mostly a planning problem. These are written for property managers and boards.

• When apartment windows are due for replacement — the signals in work orders and resident complaints.
• Phasing window replacement in occupied buildings — sequencing, access and notice.
• Retrofit vs. full-frame windows for apartments — how the frame decides the method.
• Title 24 for multifamily window replacement — and why phased projects can be caught by the code date.
• Multifamily window replacement cost per unit — how the number is actually built up.
• Reasons to replace every window in a building at once — the case for one project over piecemeal repairs.
• Choosing windows for a commercial space — efficiency, light, noise and security.
• Commercial window replacement — our commercial window service.

Choosing an installer

The same window can perform very differently depending on how it is installed.

• Best window replacement companies in Sacramento — how to compare local installers.
• Best window replacement companies in the Bay Area — the same comparison for the Bay Area.
• Window installation in Sacramento — our process, from measurement to cleanup.
• Residential window replacement — our residential window service across Sacramento, the Bay Area and Tahoe.

Siding and window pairings on real homes

Projects where the siding color and the window line were chosen together.

• Arctic White siding with Milgard Style Line
• Boothbay Blue siding with Milgard Trinsic
• Gray Slate siding with Milgard Trinsic
• Mountain Sage siding with Milgard Trinsic
• James Hardie with Milgard C650 Ultra fiberglass
• Evening Blue siding with Anlin Catalina
• Light Mist siding with Anlin Catalina
• Hardie lap siding with Anlin Catalina
• James Hardie with Anlin Catalina
• Evening Blue siding with white Amsco windows
• Navajo Beige siding with Ply Gem Pro
• Hardie lap siding with Alside 80 Series
• James Hardie with Simonton DaylightMax
• White board-and-batten with Andersen windows

When you are ready for a number

These guides explain the choices. A quote depends on the openings themselves: their size, the frame they sit in, and what we find when the old window comes out. We measure every opening and put the scope in writing before any price is agreed. See our cost guide for published ranges, or ask us for an estimate.

This page is an index of Heritage Exteriors’ window guides. Code requirements, rebate programs and manufacturer terms change, so each linked guide is the place for specifics.