Window Replacement for Southwest Michigan & Northern Indiana
Discover Project Possible Payback
Your home improvement project can pay for itself over time – and some of your neighbors are already saving!
Learn more - find out how to get back up to 100% of your project's cost - fill out the form today!
Say “Yes, Sir” to Custom Window Replacement in the Portage, MI, Area
Experience a window replacement service designed exclusively for homes in Southwest Michigan and Northern Indiana from SIR Home Improvements. Every window project starts with a focus on energy efficiency, lasting value, and tailored design options that suit your home’s style and the region’s climate.
With over 40 years of serving local homeowners, SIR Home Improvements brings extensive community involvement and a caring approach to every job. Our in-house, factory-trained installation team, not subcontractors, manages all window projects from design to final walkthrough. When you want the installation done right the first time, just say “Yes, sir.”
Explore Window Styles and Options
Upgrade your home with a full spectrum of window options, including:
• Double hung windows
• Sliding windows
• Picture and garden windows
• Bay and bow windows
• Casement windows
Whether you need vinyl replacement windows, a modern look, or timeless appeal, our design consultations make choosing the right style easy. All windows feature high-performance Polaris technology, known for outstanding energy savings, resilience, and design versatility. Looking for the perfect fit or specialized function? We also offer custom window solutions to match unique spaces and tastes.
For a detailed look at all available styles, explore our window types.
Energy Efficiency That Pays for Itself
The windows we install have been selected for their durability in Michigan and Indiana weather. Crafted from durable, low-maintenance materials, our vinyl and composite options are designed to perform for decades. Our windows are equipped with:
• Insulated frames
• Advanced multi-pane glass
• Weather-resistant seals
These features work together to reduce drafts and lower energy costs year-round.
Through the exclusive Project Possible Payback Program, every qualifying window project includes a complimentary energy audit and professional air-sealing. This program helps many homeowners see their energy savings offset the investment in their new windows over time.
Curious about how your window replacement could pay for itself? Book a free, no-obligation consultation. We will guide you through projected savings and your eligibility for the Project Possible Payback advantage.
Our Window Installation Process
From your first call to the final walkthrough, our window installation process is built on respect, quality, and transparency:
1. Speak directly with a local team member and tell us about your goals.
2. Schedule a free in-home design consultation. You will receive a two-year price guarantee.
3. We take precise measurements, and you get personalized recommendations. We never use high-pressure or unexpected sales tactics.
4. Your windows are installed by our in-house, factory-trained professionals. We do not use subcontractors.
5. We clean up thoroughly and complete a final walkthrough to make sure every detail meets your satisfaction.
Throughout each stage, you will have open communication, prompt updates, and a process that values your time and respect for your home. For more information, visit our window installation process page.
Additionally, we offer a limited lifetime labor warranty on all installations, which is transferable for a modest fee. This gives confidence to the next homeowner if you ever sell your home. More about our warranty.
Service Area Coverage
SIR Home Improvements proudly serves homeowners across Southwest Michigan and Northern Indiana. Some of our primary communities include Kalamazoo, Portage, South Bend, and Elkhart. If you live outside these areas, see the full list of communities we serve to confirm coverage.
Looking for inspiration? Explore our project gallery for ideas on what’s possible in your home.
Community First—Where Your Investment Goes
When you choose SIR Home Improvements, your project supports more than your own home. Our team is deeply involved in Southwest Michigan and Northern Indiana through ongoing partnerships with SIR Home Cares, NAMI, and Baths for the Brave. With every window installation, we dedicate resources to local giving and veteran support.
Your investment goes further, strengthening the communities we call home. Learn about our community impact and discover the difference made with every window project.
Ready to Start Your Southwest Michigan or Northern Indiana Window Project?
Take the first step toward a more comfortable, energy-efficient home. Request your free design consultation today at your home in the South Bend Region of Michigan and Indiana. You will receive a two-year price guarantee with your estimate, and we can also discuss our available financing options. Let our expert team show you how window replacement can pay for itself, without obligation.
Check Out Our Reviews
We had two bathrooms redone, one more than the other. Happy with the work and the price. The workers were very good and timely. Hats off to Trevor, Mike, Travis, and Carter. The finished product looks great and we are happy with the experience
Shower install. We needed a replacement shower handle. Excellent service. We love our shower. Long installed it. Great employee. I recommend your company.
Very pleased with Becky, Johnathan and Colin. Very friendly and easy to work with. Answered all our questions and concerns. Stayed within our budget. They’re fast in and out. We only had the new shower installed and old taken out. They were ahead of schedule. Only took 2 days. We are very satisfied customers. We highly recommend them for your bathroom needs. Jerri and Shawn
Excellent job guys. You drove almost 200 miles round trip every day and you still did a great job at a complete bathroom remodel in three days. We were happy with the price too. All the guys working were great. I would recommend you.
My husband and I are very impressed with the work that was done to our bathrooms, putting in a walk-in, in two bathrooms, tomorrow is the 2nd bathrooms time. Love the quality work and the new walk in with grab bars assisting in our safety. A much needed accessory. Thank you~
Contact Us Today for a Quote
Mon-Fri: 8:00am - 9:00pm
Sat: 9:00am - 5:00pm
Sun: 11:00am - 5:00pm