+1 970-481-5907

Call Us Now

Our Location

2580 E Harmony Rd #201
Fort Collins, CO 80528

Opening Hours

Mon - Fri: 8pm - 6pm
Saturday: 9am - 3pm

Contact Us Today
Fill out the form below and one of our specialist will contact you. Thank you for your interest. or Call 970-481-5907

AllGuard Ft.Collins Window & Doors

We are a full service window and door replacement company that puts our clients first. We specialize in top quality installations and 5 Star Customer Service that we back with our signature AllGuard Warranty. Call Us Today and see how We outperform our competitors.l

Window Installation

Request an Estimate Now.

Call for availability.

Full Frame Window Installation

Request an Estimate Now.

Call for availability.

Patio and French Door Installation

Request an Estimate Now.

Call for availability.

Entry and Storm Door Installation

Request an Estimate Now.

Call for availability.

Window and Door Cut-Trought / Custom Fitting

Request an Estimate Now.

Call for availability.

Some Window and Screen Repairs. Call for Availability

Request an Estimate Now.

Call for availability.

We are one of the best choices in Fort Collins Colorado for window and door replacement, and so much more! We know that you will love the doors and windows we install in your home.


Our Fort Collins window replacement services are incomparable. Our affordable doors and windows have satisfied our customers so much that they have spread the word about us all over Colorado. They have given us lots of positive feedback on social media, and existing customers have been referring new customers to us regularly.

If your windows or doors need to be replaced, our company has a variety of low-cost options that will protect your family and improve your life. Your home is your greatest asset, which is why we are able to offer you these benefits for a reasonable price.

READ THIS FIRST IF YOU NEED REPLACEMENT WINDOWS

Each year, 25% of your home’s heating and cooling costs are lost through your windows, according to HomeAdvisor. Replacement windows can improve the outer appearance of a home. They can make a property more appealing than a home that has rotted out windows and chipped paint. No one wants to purchase a home that has old, worn windows and a tattered exterior.

You could save thousands of dollars each year in energy costs, increase your home’s value with the right replacement windows, and reduce your carbon footprint on the environment. Our installation prices are the lowest in the Fort Collins area, so you will be able to recoup your investment quickly. In today’s housing market, homeowners want to get as much out of their home as possible, especially if they are looking to trade it in for a new home with state-of-the-art doors and windows.

Do you still need more time to make a decision, or are you ready to upgrade your home with new doors and windows?

Our experienced team of installers have tackled window replacement projects for years. If you need replacement windows to replace your old vinyl, wood, or fiberglass double hung windows, or you need assistance determining the benefits and features of sliding windows vs. double hung windows vs. casement windows, our professionals will be happy to help. We can also help you choose the right window to suit your needs, and show you how to properly care for your new windows, as well as how to clean them.

While this website has a wealth of information, our staff at AllGuard Windows and Doors can connect you to a window replacement expert who will walk you through the entire window replacement project from beginning to end, and answer any questions you may have along the way.

Our experts will not only measure your windows, but they will also describe the sunlight blocking qualities of the glass that will be put inside of your new windows, and will help you find a balance between protection from the harmful UV rays of the sun and having the right amount of sunlight to brighten your living space. In addition, we will provide you with some tips on how to choose the right type of window and door for your application.

You can spend hours of time searching the internet for information about window construction techniques, window spacing, and argon or low-E glass windows, or you can speak with one of our window replacement specialists who will be able to give you this information in a language that’s easier to understand.

Our professionals are trained on the latest industry technologies and techniques so they can give you the information you need to make an efficient and practical decision. We promise we won’t overload you with any confusing, superfluous information about replacement windows. We won’t waste your time with a sales pitch. We want you to be satisfied with your windows for many years to come.

If you want to do some more research about our windows, read on. But if you are ready to talk with an installation professional, then contact AllGuard Windows and Doors today. Our phone number is at the top of our webpage.

Selecting the Right Replacement Window to Suit Your Needs


There are a variety of different window construction features, types, and styles for you to choose from. You can mix and match from our selection to develop an unlimited number of window combinations.

The most common windows will be covered here, but our years of experience with installing windows in Colorado gives us an edge in helping us select the best new replacement windows for homes all over the state.

Double-Paned Windows


There are a variety of different replacement windows to choose from. We don’t have a one-size-fits-all approach to a customer’s unique situation. Double-paned double hung windows, by and large, are the best value for any home. We love all types of doors and windows, and are happy to help you display the beautiful Colorado scenery in your home while shielding it from the harsh weather elements.

No matter what type of window you choose, we will work hard to make sure that we are your replacement window company of choice in the Fort Collins area. If you have made it this far down the page, then you must be the kind of buyer who wants to learn as much as possible about what you are buying before having someone over to give you an estimate.

Let us give you some additional insight on why we feel that double-paned double hung windows are the best choice for replacement windows.

In case you may not have known, double-hung windows are a special kind of window that can be lowered or raised, and can also be folded inward so that you can clean the outside of them without having to go outside.

These windows are constructed from light-weight materials that make cleaning effortless for the homeowner. Imagine cleaning your windows during the harsh winter months in a matter of minutes without having to leave the comfort of your warm home. Once you have experienced the joy of double-hung windows, you will want them on your next new home.

People really love these windows that much!

We have already mentioned how the money you will save on energy costs by purchasing our double-paned windows can offset your new window costs dramatically, but there are several other reasons you should consider buying them according to HomeAdvisor.

For one thing, you’re saving the environment, in addition to the amount of money you will save on your heating and cooling bills.

Colorado is one of the most beautiful states in America. Its beauty truly makes you appreciate leaving a green footprint on the environment. We also have windows with cutting-edge technologies in the glass that can increase your energy efficiency even more than a typical set of double-hung windows would.

In addition to reducing your carbon footprint on the environment and saving thousands of dollars a year, noise pollution is also reduced drastically with our double-paned windows. Your private space will be protected from any unwanted outside noise while you are inside enjoying a nap or reading a book on a Saturday afternoon.

Quality Comes First in Window Installation

Whether you are looking to upgrade your current home with replacement windows or you are looking for new windows for a brand-new home, it is important that you have a window company that prides itself with their quality of work. Quality is everything if you want your windows to deliver the energy savings and performance you desire for your home.

Poorly-manufactured and installed windows will not save you any money in heating or cooling costs. Even if you purchase our highest-quality windows, if they are not installed properly, you could run into some issues down the road. Our window replacement experts will not disappoint, as they have installed many windows over the years. Our customers are our most valuable assets, and we want to make sure that our windows are installed correctly the first time. We won’t be satisfied with our work until you are satisfied. We’ll be happy to fix anything that isn’t up to your standards.

Replacement Doors

If you are looking for a door replacement contractor in the Fort Collins area, we hope you will use AllGuard Window and Doors for your door installation needs.

We take our door installations as seriously as our window installations. We have years of experience installing sliding glass doors and French doors, and have the expertise and knowledge to ensure that your door replacement project protects your family and enhances the value of your home.

Window Installation

We specialize in Northern Colorado / Fort Collins Window Installation. Whether you are looking to replace old and tired vinyl, wood, fiberglass or aluminum windows, our professional installation techniques will have you covered. Our competitors focus on pushy sales tactics to hook their customers, AllGuard Windows and Doors is Ft Collins best window and door replacement company because we focus on what really matters, The Installation. Call Us Today and see why we are the premiere window and door installation company in Ft Collins, CO.

Full Frame Installation

There is a lot of confusion surrounding this term and type of installation. Most companies offer pocket installs, they use the existing window frame and just install new sashes. At AllGuard Windows and Doors in Ft Collins, CO we never utilize this installation. We always utilize a full frame window installation. We remove the entire window down to the studs. This ensures a proper installation, we inspect every homes frame prior to installing the new window in your Northern Colorado home. This ensures there is no rotting, mold or any other damage that can occur over years of the Northern Colorado Climate. We are so confident in our time-tested installations that we warranty our installation process. Call Us Today for a free in-home consultation in your Northern Colorado home.

Patio Door and French Door Installation

Old and non-functioning patio door? Thinking of upgrading to a French Door? Call Us Today and see how we can help. We specialize in the installation process for sliding doors and French doors. Whether you are looking to replace that old sliding patio door that doesn’t slide smooth and can never really be closed or opened properly or if you are looking to upgrade to something more stylish like a Beautiful French Door, we have you covered. Our craftsman installers take the time to take what we like to call a Critical Measure to ensure accurate measurements when ordering your custom fitted door. Most companies allow their salespeople to take these measurements. This is just a poor and lazy way to save money. An inaccurate measure can cause not only delays but even worse an improperly installed window or door. A proper installation starts with a proper and accurate measure, a high-end door or window will poor poorly with an improper measure and install. Call Us Today and avoid this from happening to your home.

Entry and Storm Door Installation

Your front door and storm door are the focal point of your home, they are the doors that take the most abuse and most use. At Big Box stores in Northern Colorado they carry low quality construction grade doors. They also like to hide pricing. The price you see on the floor is the base price, add in all the delivery, measure fee, warranty, hardware and anything else you may need and that low price tag became much higher in a hurry. At AllGuard we never hide pricing, we are upfront with our installations and our pricing. We carry the premiere choices for entry and storm doors in Ft Collins, CO. Call Us Today and see how we can add beauty to your Ft Collins home.

Window and Door Cut Through / Custom Fitting

When remodeling or planning to replace windows and doors in your Northern Colorado home sometimes more space or a larger view is on the drawing board. Call Us Today and let us help you realize this dream and have it done the right way. We carefully walk through every step with you to ensure not only accuracy in your project but that we are all on the same page for your Northern Colorado remodel.

Window, Door and Screen Repairs

Not every window and door is in need of replacement, sometimes a repair is all it needs. We specialize in Northern Colorado home repairs as well as installations. Call Us Today and see how we can help with your repairs.

Areas We Serve


AllGuard Windows and Doors serves the following areas of Colorado: Platteville, Kelim, Milliken, Masonville, Garden City, Evans, Lucerne, Mead, Red Feather Lakes, Laporte, Wellington, Bellvue, Severance, Eaton, Johnstown, Berthoud, Longmont, Greeley, Windsor, Loveland, Fort Collins, and Cheyenne, Wyoming.

For more information about our services and products, contact us at 970-481-5907.

Find Out What Our Customers Are Saying