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Double-Hung Windows in Denver, CO

Add classic style and functionality to your home with double-hung windows from Window World of Denver.

Combining Style & Function for Denver Homeowners
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Our double-hung windows are our most popular window style for a reason. Here’s why:

  • Superior strength & durability with heavy-duty vinyl construction
  • Premium thermal protection with thick foam enhancement
  • Enhanced energy efficiency with Triple-pane SolarZone™ glass
  • Extra protection & security through recessed cam locks

Double-hung window colors to meet your specific taste.


*Color options may vary based on package, dimensions and more.

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What is energy efficiency?

Energy-Efficient Windows

Energy-efficient windows provide insulation and solar protection, which work together to lower your energy bills and keep your home’s interior temperatures more comfortable year round.

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Your Questions, Answered

Double-Hung Windows FAQs

What are double-hung windows?

In a double-hung window, both the top and bottom sashes move up and down. This allows you to open either sash for completely customizable ventilation.

Are double-hung windows energy efficient?

Yes. Window World of Denver’s Double-Hung windows provide substantial energy efficiency and savings for your home with our ENERGY STAR®-qualified SolarZone™ insulated glass package.

What are the size dimensions of double-hung windows?

At Window World of Denver, we custom design our windows to fit your home’s specific measurements. Contact us to learn size specifications of our different models.

Do double-hung windows provide long-lasting durability?

Yes, extreme weather conditions occur, our proprietary sill interlock stands strong. Conventional slope sill designs allow the window sash to bow in the wake of powerful winds, but with our interlocking sash-to-sill technology, the sash is locked firmly into the window frame for extra strength.

How do you clean double hung windows?

At Window World of Denver, our double hung windows are made with tilt-in sashes. This means that both the top and bottom sashes of the window can be tilted towards the interior of your home, making it easy to clean both the interior and exterior.

To do this, you’ll want to follow these steps:

  1. Unlock and raise your window about 2”.
  2. Move the wash assist tabs so they’re between the sash and the frame.
  3. Carefully pull the lower sash towards you and rest it on another object for support (be sure not to tilt it more than 90 degrees).
  4. Next, you’ll want to lower the upper sash. To do this, slide the tilt latches to the top and lower the top window sash, leaving an inch or more of space between it and the lower sash.
  5. Push the tilt latches inwards and tilt the upper sash inwards towards you, and rest it carefully on the lower sash.

Follow these instructions, and you’ll be able to properly clean and care for each and every crevice of your double hung windows.

What is the difference between single and double hung windows?

Single hung windows and double hung windows both have window sashes that can slide vertically. On a single hung window, only the bottom sash can move, while the top sash remains fixed in place. On a double hung window, both the top and bottom sashes can slide as needed.

How are double hung windows installed?

At Window World of Denver, each of our double hung windows is installed by our team factory trained professionals. This includes properly setting, leveling and caulking to ensure your new windows fit perfectly. Find out more about our window installation process.

How do you open double hung windows?

Both the upper and lower sashes of a double hung can slide to allow the window to open. To open the lower sash, simply unlock the sash and slide it upwards. To open the upper sash, unlock your lower sash, and gently lower the upper sash to the desired position.

How do you lock double hung windows?

To lock a double hung window, you must first check the alignment of your locks. Ensure that the upper sash is pushed all the way up and the lower sash is pushed down completely, until fully sealed. This will allow your locks to be secured without any obstructions.

Are double hung windows energy efficient?

Yes! At Window World, each of our double hung windows is ENERGY STAR® Certified. Our windows are manufactured using Low-E glass, warm-edge spacers, and insulated vinyl framing, all designed to maximize energy efficiency.

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What Your Neighbors Are Saying

I had my replacement windows put in this past Monday and I have to say I am very, very happy with them and so are all that see them. If I ever need new windows installed, I will call on you guys again.
Nicky V.
We love the look of these new windows! We love the level of efficiency that is already making a difference in the internal warmth of our house. They are by far the best available windows at a price that is reasonable and fair.
Christie M.
My windows are gorgeous! From start to finish, I received fantastic service. The quality of the windows is excellent. The sales staff is knowledgable and don’t try to oversell. The install staff were efficient and courteous. All in all, I am glad I purchased my window from Window World!
Daryl F.

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