Seattle Double-Hung Windows
Tired of the limited ventilation provided by your home’s single-hung windows? Call Lake Washington Windows and Doors to learn about our double-hung window professional installation offers. If you live in Seattle, call us today to install high-quality double-hung replacement windows from the industry’s top manufacturers.
Double-Hung Windows Defined
Double-hung, also known as double-sash, are rectangular windows similar to single-hung designs. The difference with double-hung windows is they consist of two operable sashes, top and bottom, instead of only one operable bottom sash. The ability for both sashes to open provides superior ventilation and an added level of safety for homeowners with small children.

Double-Hung Manufacturers Carefully Chosen For You
Let us use our experience and industry knowledge to your benefit. With over 30 years in the window industry, time has allowed us to determine the double-hung window manufacturers manufacturers who deliver you the best blend of quality, price, and VALUE. Our chosen manufacturer partners create value in four essential areas:
- Consistency of quality and service over the years
- Level of warranty support to you
- Industry longevity
- Product innovation
Our valued manufacturer partners for double-hung windows are:
Best Applications
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Perfect for those who desire superior ventilation while keeping the look of sash windows
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Great for homeowners with small children who can access lower sash openings
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Excellent new window choice for just about any architectural style
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For those who want a window that can be easily cleaned and maintained
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Great window style for accommodating additions such as air conditioning units
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For those who want to reduce noise pollution throughout their home
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Perfect for homeowners who want to balance versatility, durability, and energy efficiency
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LW Series Vinyl Double-Hung Windows
Features and Benefits:
- Dual-operable sashes allow both the top and bottom sections to open independently, providing flexible ventilation and improved airflow.
- Tilt-in sashes make it easy to clean both the interior and exterior surfaces of the windows from inside your home.
- Advanced glass packages and insulated vinyl frames improve energy efficiency, reducing energy loss and keeping your home comfortable year-round.
- Premium vinyl construction resists warping, cracking, and fading, delivering durable, low-maintenance performance for years to come.
- The clean, symmetrical design of double-hung windows adds timeless charm to any space while offering modern functionality.
Window Types | Energy Efficiency | Glass Packages | Noise Reduction | Design | Quality | Security | Warranty |
Double Slider | Energy Star Certified | SunMatrix | Sound Package | Even Sightlines |
XTRU
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First Guard | Limited Double Lifetime |
Double Hung | Infinit-e | Tilt-In Feature | Sash Dead Bolt | ||||
Casement | SunShield | Ventilation Latch | Continuous Interlock | ||||
Awning | CoolShield | Armor |
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Bay & Bow | Luminance | ||||||
Garden | QuadraTherm |
Double-Hung Window FAQs
What’s the difference between a double-hung window and a single-hung window?
The primary difference between a single-hung and double-hung window is the operable sashes. While both the top sash and bottom sash of a double-hung window are operable, a single-hung window only has one operable lower sash.
Why do people like double-hung windows?
The primary reason homeowners enjoy double-hung windows is the additional airflow and ventilation the two operable sashes provide compared to a single operable sash while also being significantly easier to maintain.
Why are double-hung windows more expensive?
Several factors lead to the price difference between single and double-hung windows, including window size, materials, energy efficiency, optionality, UV protection, operable parts, and installation complexity.
What makes double-hung windows an excellent choice for families with small children?
Families with small children choose double-hung windows because they provide locks and latches that prevent accidental openings. Their design also allows you to open the top sash for ventilation while keeping the window opening out of a child’s reach. Additionally, their durability ensures they can withstand the occasional bumps and knocks that come with kids’ activities.
Are double-hung windows the same as double-pane windows?
No, double-hung windows and double-pane windows are not the same. Double-hung windows have two sashes that can be moved up and down, whereas double-pane windows have two panes of glass sealed together to provide improved insulation. In other words, “double-pane” refers to the glass used, while “double-hung” refers to the window design.
Why does a double-hung window cost more than a single-hung window?
Double-hung windows generally cost more than single-hung windows due to their more complex design and additional functionality. While single-hung windows are more straightforward and have a single operable sash, double-hung windows offer increased functionality. The manufacturing process and hardware required for the dual sashes contribute to the higher cost, as does the added convenience of being able to tilt both sashes for easy cleaning.
COMMERCIAL-GRADE Installation
Leak Armor Lifetime Installation Guarantee
When it comes to preserving the lifespan of your new windows and doors, installation matters. Thousands of window and door installations have honed our replacement process to perfection. For each project, our team follows a streamlined 3-step process to ensure you experience minimal delays and inconvenience before enjoying the benefits of your new window or door.
Top-Rated Window & Door Replacement Services
At Lake Washington Windows and Doors, we offer the highest quality windows and unparalleled customer service, with over 800 5-star reviews. With each installation, our exclusive Leak Armor Installation provides superior protection around your window openings. When you choose us for your window installation project, you can be sure that you’re getting the best.
Financing Options with Convenient 10 Minute Approvals
In addition to special offers and promotions, ask our sales representative about our quick, digital financing application process. From low-interest traditional loans to no down-no payment-no interest deferred financing plans, we can help you fund your replacement window project so you can mobilize your cash for other investments. We are a proud partner of GreenSky, one of the largest lenders for the home improvement industry. See how much you can be pre-approved for.
Every Window & Door Includes a Limited Lifetime Warranty
The beauty of working with the top window manufacturers in the industry is the support you can expect before, during, and after installation. Milfard offers a limited lifetime warranty. However, the likelihood that you’ll need to take advantage of the warranties is low.
Milgard Lifetime Warranty Guarantee
Milgard’s award-winning windows and doors are built to last. However, if you ever encounter an unexpected problem, you can rest assured that their lifetime warranties cover your purchase.
Every Installation Includes Leak Armor Commercial-Grade Protection
Our exclusive Leak Armor protection is included with every window we install. Developed through thousands of customer installations and years of experience, we utilize multiple layers of flashing, pans, and sealants in a specific manner to provide commercial-grade sealing to residential homes.