What Every Homeowner Should Ask Before Replacing Windows in Wisconsin
- Jeremy Stroik
- Feb 6
- 4 min read
A Duncan’s Window & Door Homeowner Guide
Replacing windows is one of the most important home improvement decisions you will make. New windows impact comfort, energy efficiency, curb appeal, noise reduction, and long-term home value.
At Duncan’s Window & Door, we believe informed homeowners make the best decisions. This guide is written the way we talk to our neighbors: practical, honest, and straightforward , no gimmicks, just real guidance you can trust.
If you are considering window replacement in Wisconsin, this post will help you ask the right questions, understand your options, and choose a company with confidence.
SECTION 1-Smart Questions to Ask Any Window Company
Before inviting a company into your home, these questions will help you separate trustworthy professionals from high-pressure sales teams.
1. Who will actually install my windows?
Ask directly:
“Are your installers employees or subcontractors?”
At Duncan’s, your windows are installed by our own trained, in-house craftsmen, not subcontractors. That means better quality control, consistent workmanship, and real accountability from start to finish.
2. What warranties do you offer and who stands behind them?
Not all warranties are created equal. Ask:
Is the warranty manufacturer-backed?
Does it include labor?
Who handles service calls if something goes wrong?
At Duncan’s, we stand behind what we sell and what we install. If there’s ever an issue, you call us not a national call center.
3. How do you handle rot or structural issues?
Older Wisconsin homes often have hidden wood rot around windows. You want a company that will repair problems correctly, not cover them up.
Our process includes opening the rough opening, inspecting for damage, replacing compromised wood, and properly sealing every window.
4. Will you measure my windows in person?
If a company is willing to order windows without visiting your home, that is a red flag.
We measure every window on site to ensure a precise fit and proper installation.
5. Can I see local reviews and references?
Real reviews from real homeowners matter far more than glossy ads.
We are proud of our reputation and grateful for our World’s Best Customers who consistently recommend us across Wisconsin.
SECTION 2-How to Research Window Companies Before You Buy
One of the smartest things you can do before choosing a window company is to research them beyond their website.
Here’s where to look:
Google Reviews
Search the company name plus:
“window replacement”
“install quality”
“customer service”
Look for patterns, not just star ratings. Do you see consistent praise for craftsmanship, communication, and service?
A strong local company will have years of positive reviews from real homeowners.
Facebook Mom Groups and Community Groups
Local Facebook groups are one of the most honest places to get feedback. Ask questions like:
“Who did your windows?”
“Who would you recommend?”
“Who would you avoid?”
You will quickly notice which companies come up repeatedly and which ones don’t.
Validation of a sound, reputable business will naturally stick out compared to others.
Your Personal Friends List
Don’t underestimate word of mouth. Post something like: “Who replaced your windows and did a great job?”
You’ll often get real stories, real experiences, and honest feedback you can trust.
At Duncan’s, much of our growth comes from referrals homeowners recommending us to neighbors, friends, and family.
SECTION 3 - Insert Replacement vs Full Frame Replacement
Homeowners typically hear two terms: insert replacement and full frame replacement. Here’s what they mean in simple terms.
Insert Replacement Windows
A new window is installed inside your existing frame.
Pros
Faster installation
Less invasive
Lower upfront cost
Cons
Old framing remains
Slightly smaller glass area
Hidden rot may stay hidden
This can work well if your existing frames are in excellent condition.
Full Frame Replacement Windows
The old window is removed down to the rough opening and replaced with a brand-new system.
Pros
Exposes hidden rot
Allows proper repairs
Better air and water sealing
Larger glass area
Longer-lasting result
Cons
More labor
Higher upfront cost
SECTION 4-Real Energy Savings from New Windows
A common question homeowners ask is:
“Will new windows really save me money?”
Yes especially if your current windows are drafty, fogged, or single-pane.
On average, homeowners see 7% to 15% annual energy savings, with many around 12% per year.
In real dollars, that often means:
$125 to $450 per year in savings
Many families report $25 to $50 per month lower heating and cooling bills
Why this matters in Wisconsin
New energy-efficient windows help keep heat inside during freezing winters and outside during humid summers, making your home more comfortable while reducing strain on your furnace and AC.
At Duncan’s, we specialize in Wisconsin-built, climate-tested windows designed for our weather not Florida’s.
SECTION 5-Why Choose a Local, Family-Owned Company Like Duncan’s
You’re not just another job
We live here. We work here. Our reputation is built one home at a time.
Your dollars stay local
When you hire Duncan’s, you support local families, local jobs, and local businesses.
Real accountability
No 1-800 numbers. No corporate runaround. You call us we answer and we show up.
Pride in craftsmanship
We believe in doing things neat, not repeat.
Final Thoughts
New windows should make your home warmer, quieter, more beautiful, and more energy efficient.
By asking the right questions, researching companies thoroughly, understanding your replacement options, and choosing a trusted local partner like Duncan’s Window & Door, you set yourself up for a stress-free experience and a result you’ll love for years to come.
If you’re ready to explore window replacement for your Wisconsin home, we’d love to help.
Built in the Midwest. Installed by our team. Trusted by our neighbors.
Comments