Your Kansas City Window & Siding Experts

Searching for siding and window companies in Kansas City?  Get the best replacement  windows, doors and siding for your home from Thermal King Windows.

Let us show you the perfect window.


Get an estimate for your window, door, or siding project.

Why Thermal King Windows & Siding?

Thermal King Windows has taken parts from all the top windows, eliminated everything that isn’t 100% optimal and engineered to be the best replacement windows in Kansas City and the only local window company that promises and delivers perfection. Not just great windows, also great service. Thermal King Windows are guaranteed to never stick, rot, warp, fade, or fail. In fact, if they do, we will replace it… PERIOD. Our windows are easy to clean, always look new, and require practically no maintenance.

No Pressure Sales: Forget about all the pricing games and dog-and-pony shows. We’ll explain our products, answer all of your questions, give you a price to the penny, then step back and let you decide.
Energy Savings: All Thermal King Products are Energy Star rated and are designed to save you money on your utility bills. 

Perfection isn’t optional, it’s engineered. Our windows never stick, never rot, never warp, never fade, and never fail.

Years Experience

Completed Projects

What we do

Replacement Windows, Siding Installation, Front Doors, and Patio Doors

Window Replacement

Thermal King Windows are built for strength, efficiency, and durability. Our windows are good for you, good for your home, and good for the environment. Built to save money and last a lifetime, that’s the perfect window.

Exterior Doors

Thermal King Doors use only the highest quality materials to construct our exterior doors. Our highly skilled craftsmen assemble handmade glass panels to give your exterior doors the most personal and energy efficient solution. 

Residential Siding

Ever since we introduced the first low maintenance residential siding in 1947, we have been raising the bar on appearance and performance. With today’s technology our siding delivers stronger and more rigid siding solutions. 

Energy Star Windows and Doors

Not just some, but ALL of our products are Energy Star qualified. The Energy Star Program was created by the U.S. Department of Energy and the U.S. EPA to make it easier for consumers to choose the most energy efficient products. This label certifies our products meet or exceed the federal energy efficiency standard. 

Let’s Build Something Together

Our simple and hassle free process guarantees that your home improvement project will give you stunning results, guaranteed. 

No Obligation, Free Estimate

Our team is ready to help you and is specifically trained to help provide solutions, not sales gimmicks. You can contact us online or over the phone and arrange an in home consultation, complete with a free estimate.

High Quality, Energy Efficient, Perfection

Once we have the specifications for your windows our project engineers will begin crafting our patented, industry leading, triple pane windows just for your home. We follow the same process for our beautiful exterior doors. 

Window, Door, and Siding Installation. With a smile.

Our installation technicians are expert craftsmen. But, they are also highly trained customer service professionals. We pride ourselves on the ability to complete your project on time and with friendly staff who ensure you have a positive experience. 

Perfection Guaranteed

We don’t just sell great windows, doors, and siding, we guarantee it. Our windows will never stick, rot, warp, fade, or fail. In fact, if they do, we will come out and replace it, period. We pride ourselves on quality and virtually maintenance free products for our valued customers. 

Client Testimonials

Finally got the last of our windows installed today. Jessie and his son’s team did an awesome job with with the installation! Very happy with the reduced energy bills and the look and quality of the materials and windows.


We had a sliding door installed a few weeks ago. The installer was prompt and answered any questions that we had. All materials were cleaned up after the install. The door works perfectly. It was an excellent experience!


Got our new Thermal King sliding door window installed last fall and has been night and day difference from our old one. No more leaking moisture or air. Service was great. Awesome product and service all around!


While Thermal King Windows and Doors come with industry leading quality and guarantees, we are committed to making our doors and windows even better. There is no time for slowing down or stopping when you are in the pursuit of perfection.

We are experienced

We Have Over 35 Years of Experience in The Industry

Being an expert is more than knowing how to get the job done. It’s innovating and improving the products and process and never being complacent with the result. We have spent decades building what we consider the perfect window, but that doesn’t mean we plan on slowing down anytime soon. 

Limited Time Offer

Triple-Glass Windows at the Double Glass Price!


0% financing for twelve months!!!