Five Steps to Choosing the Right Size Window for Your Space

an airy four seasons room with large double hung windows

If you are considering replacing your home’s window, or if you’re building a new home, you may be wondering how to choose the right size window for your space. Here is the foolproof, five-step process that we recommend to homeowners who visit our window installation store.

Four seasons room with large windows captioned with "avoid costly design mistakes: five steps to choosing the right size window for your space"

1. Consider the Size of the Room PLUS Your Home’s Style

As a general rule, the larger the room the larger the windows can be. However, there is no prescriptive rule for how much of a wall should be taken up by windows; anything from 0-100% can be correct.

That’s because, in addition to the size of the room, you’ll also need to consider the architectural style of your home when you try to identify the right size window for your space. A modern home can look spectacular with floor-to-ceiling windows. However, this same design choice would look bizarre on a traditional colonial brick home.

What we don’t recommend is trying to make a very small room appear larger by adding a relatively oversized window.

Here, for example, the large window only highlights how cramped this room is.

A very small bedroom with an oversize window
This window is too large for this small bedroom. The oversized window makes this tiny room appear even more cramped than it is.

This small room is a perfect example of one that might look spectacular with a slim, vertical window.

2. Think about the Function of the Room

If your kitchen has a great view of your backyard, and you like the idea of being able to see your landscaping and watching kids and pets play, you may want a large window in that space.

If, however, you are looking for a window for your home office, and you know that you’d be easily distracted by beautiful or busy views, you may want to opt for a smaller window.

Overall, modern windows will be quieter than older, wood or vinyl windows. However, the larger the window, the more potential there is for sound to infiltrate. Be sure to consider how sound may affect how your spaces function.

3. Consider the Light you Want in the Room

A primary factor in the light you’ll get in a room is the direction that the wall is facing.

South-Facing Rooms: These rooms receive direct sunlight for most of the day. Smaller windows can help manage heat gain and prevent glare. Consider also using blinds or curtains to control the amount of light.

North-Facing Rooms: North-facing rooms receive indirect sunlight, which is generally softer and more consistent. Larger windows can help maximize natural light in these spaces.

East-Facing Rooms: These rooms receive morning sunlight, which can be bright and invigorating. Consider smaller windows to avoid excessive heat gain during the summer.

West-Facing Rooms: West-facing rooms receive afternoon and evening sunlight, which can be intense. Opt for smaller windows or use blinds to control the amount of light and heat.

4. Determine the Mood you want in the Room

The perfect size window will accentuate the feel you’re hoping to achieve in a room. For instance:

Bright and Airy: For a cheerful and open feel, choose larger windows that allow for plenty of natural light.

Cozy and Intimate: Smaller windows can create a more intimate and cozier atmosphere. Consider using curtains or blinds to create an additional sense of warmth.

Dramatic and Moody: For a dramatic and moody ambiance, opt for fewer, larger windows that allow for dramatic lighting effects.

5. Confirm that your Dream Window can be Built

We recently worked with a customer who wanted to replace a window with a larger, vinyl window. The dimensions he wanted were roughly 70” X 90”.

Although we were able to quote and order the window, we soon got a call from the production factory with some bad news.

They found that the window was so large that the vinyl frame could not support the weight of the large piece of glass.

In short, they could not make the window with reasonable expectations that it would function properly. They quickly updated their ordering software so that no one else would face the same disappointment!

Generally speaking, composite and aluminum-clad windows can be built to larger sizes than vinyl windows can be. However, it’s important to note that all windows have maximum sizes, above which they can’t be built.

Best Window Installation Company

When it's time to replace your windows, you want to work with experts who have helped thousands of homeowners find the right size windows for their space. Window Works Co. would love to help you, too!

Use the calendar below to schedule your free, no-obligation Window Consultation Call today!

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About Your Project

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Please select at least one.

For example: adding a window where there wasn't one, converting a window to a door, or structural changes.

Our appointments run about 90 minutes and include a product walkthrough and written estimate. It's most helpful when everyone who needs to review can be there.

Please let us know.
No problem. We'll bring written materials for anyone who can't make it. Keep in mind we can't finalize pricing without everyone who needs to review, so a follow-up may be needed.
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By submitting, you agree to receive a confirmation email and text, and consent to be contacted by phone or text if we have any questions. We'll never share your information.

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We'll send a confirmation to your email. We'll only reach out if we have questions.

Questions? Call us at (919) 854-6121

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Flexible financing for your Window & Door project

Three options to choose from:

Window Works Co.
Free In-Home Measure Appointment

A Beautiful Home Starts
with a Conversation.

Schedule Yours Today.

Choose a date that works, then tell us about your project. Most appointments take about 90 minutes and include a full product walkthrough and written estimate.

Serving the Triangle since 2007
Andersen · ProVia · Therma-Tru
No pressure, no obligation
Step 1 of 4

When Should We Meet?

We schedule in-home appointments Monday through Friday.

Has availability
Step 2 of 4

Your Contact Info

We'll send a confirmation to your email and text. We'll only be in touch if we have questions.

Please enter your first name.
Please enter your last name.
Please enter a valid email.
Please enter a valid phone number.
Service Address

We serve a 30-mile radius from Cary, NC, including:

Apex · Cary · Chapel Hill · Durham · Fuquay-Varina · Garner · Holly Springs · Morrisville · Raleigh · Wake Forest

Please enter a street address.
Address confirmed
Required.
Required.
Required.
It looks like your address may be outside our service area, which is a 30-mile radius from our storefront. You're welcome to submit your request — we'll be in touch if we have any questions about scheduling.
Please select your role.
If you're a renter, please make sure the property owner or manager can be present. Appointments without an authorized decision-maker may need to be rescheduled.
Please let us know how you heard about us.
Step 3 of 4

About Your Project

This helps us come prepared with the right products and samples.

Please select at least one.

For example: adding a window where there wasn't one, converting a window to a door, or structural changes.

Our appointments run about 90 minutes and include a product walkthrough and written estimate. It's most helpful when everyone who needs to review can be there.

Please let us know.
No problem. We'll bring written materials for anyone who can't make it. Keep in mind we can't finalize pricing without everyone who needs to review, so a follow-up may be needed.
Step 4 of 4

Confirm Your Appointment

Everything look right? Hit confirm and we'll take it from there.

By submitting, you agree to receive a confirmation email and text, and consent to be contacted by phone or text if we have any questions. We'll never share your information.

You're on the Calendar!

We'll send a confirmation to your email. We'll only reach out if we have questions.

Questions? Call us at (919) 854-6121

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We anticipate reopening tomorrow. Please stay safe, and thank you for your understanding.