Living in Vermont or New Hampshire means experiencing real seasons—freezing winters, humid summers, and everything in between. If you live in an older home, you’ve probably noticed just how much outdoor air seeps in through your windows.
As local insulation experts, we’ve worked in hundreds of homes across New England where replacing the original windows isn’t practical—or even possible. That’s where our interior window insulation inserts come in. Designed to seal out drafts, reduce noise, and keep your home comfortable year-round, these inserts do it all, without changing the look of your home.
How Window Inserts for Old Windows Work (and Why They’re So Effective)
Old windows often have charm, but not much insulation. That’s where Indow Window Inserts shine.
These interior inserts are made from clear acrylic panels and edged with a patented compression tube that holds them snugly in your window frame. They’re custom-measured for each window to create a nearly airtight seal—no screws, nails, or alterations required.
| Feature | Indow Window Inserts | Shrink Film Kits | Full Window Replacement |
| Non-invasive |  Yes | ❌ No (requires tape) | ❌ No |
| Reusable | Yes | ❌ No | Yes |
| Airtight Seal | Excellent | ⚠️ Temporary | Excellent |
| Fits Irregular Frames | Custom Fit | ❌ No | ⚠️ With modification |
| Preserves Window Appearance | Yes | ❌ No | ❌ No |
They’re especially helpful in older New England homes, where no two windows are exactly alike and frames often warp over time. Not sure if yours are a match? Learn more about Indow Window Inserts and request your free quote.
Year-Round Benefits: From Summer Heat to Winter Drafts
Indow Window Inserts don’t just help in winter—they work all year to improve comfort and efficiency.
Stay Cool and Comfortable During Summer
New England summers can be stifling—especially in homes with thin, single-pane windows. Indow Inserts help by:
✔️ Blocking solar heat before it enters your space
✔️ Sealing out warm, humid air
✔️ Reducing hot zones near windows
✔️ Taking pressure off your AC system
✔️ Letting in natural light—without the heat
Keep Warmth In and Drafts Out During Winter
When winter hits, even a cozy home can feel chilly near the windows. Indow Inserts:
✔️ Seal gaps and eliminate cold drafts
✔️ Trap indoor warmth to make rooms feel more comfortable
✔️ Lower the workload on your heating system
✔️ Make formerly drafty rooms feel usable again
Bonus: Reduce Outside Noise Without Touching Your Windows
These inserts don’t just insulate—they also quiet your home. Their near-airtight seal muffles noise from traffic, lawnmowers, snow blowers, and wind. Standard inserts cut noise by up to 50%. The Acoustic Grade version can reduce noise by over 70%, up to 19 decibels.
🪟From sticky July afternoons to icy January nights, Indow Inserts help your home stay comfortable, without replacing a single window. Request your custom quote today and stay comfortable year-round.
Why the Indow Window Inserts Are Made for New England Homes
New England homes are full of character and quirks. Between shifting frames, delicate trim, and preservation rules, window replacement isn’t always realistic. That’s where Indow Inserts come in.
Common Challenges in Older New England Homes
- Warped or non-standard window sizes
- Original woodwork you don’t want to damage
- Historic district regulations
- Seasonal temperature swings
Why Indow Window Inserts Are the Right Fit
- Custom-fit for each window, even if frames aren’t square
- No drilling, no permanent changes
- Thermal insulation against both cold and heat
- Preserves your home’s historic charm
What Real Homeowners Say: Top 3 Insights from Online Forums
When it comes to insulating old windows, the most helpful advice often comes from homeowners who’ve tried it themselves. Here’s what people had to say about window inserts on forums like Reddit:
“We purchased 4 Indows, and they’ve helped a LOT—not just with insulating the window in the winter/summer, but also cutting the amount of outside noise.” – ediblerice
Homeowners consistently mentioned how Indow Window Inserts provided year-round comfort. From keeping cold air out in the winter to blocking out street noise and summer heat, the benefits were immediate—and impressive.
“I bought three Indow windows for my bedroom and it SIGNIFICANTLY cut down on drafts and road noise. They look good as well.” – JerseyJared
If you’re dealing with single-pane glass or aging seals, inserts can be a game-changer. Many users found their spaces felt warmer, quieter, and visually unchanged—a big plus for anyone who loves the look of their original windows.
“Indows account for all those angles, if you measure precisely.” – Don_Cazador
Old homes often come with quirks—like uneven window frames or non-standard shapes. That’s where custom-measured inserts shine. They’re designed to fit snugly, even in the most unpredictable frames, without requiring alterations to trim or woodwork.
How to Get Started with Farnum’s Custom Window Inserts
Step 1 – Book a Free In-Home Consultation
Reach out to our team to schedule a visit. We’ll discuss your comfort goals, energy usage, and the details of your home’s windows.
Step 2 – Precise Measurements by Our Experts
We custom-measure every window for a perfect fit—even if your frames are a little out of square. This ensures an airtight seal that maximizes comfort.
Step 3 – We Handle the Rest
Once your inserts are ready, our team will install them quickly and cleanly—no construction needed. Just a better-sealed, more comfortable home.
📞 Ready to stay cozy without replacing your windows? Contact us today for your FREE QUOTE!
FAQs
Can I install Indow Inserts myself?
Indow Inserts are designed for a precise fit and optimal performance, which is why we handle the measuring and installation for you. Our team ensures your inserts seal perfectly and function as intended—no guesswork required.
Do Indow Window Inserts work on windows with irregular shapes or frames?
Yes! One of the biggest benefits of Indow Inserts is that they’re custom-made to fit your unique window shape—even if your frames are uneven or historic.
How do I update my old windows without replacing them?
Window insulation inserts are one of the most effective, non-invasive ways to improve comfort, energy efficiency, and noise control without touching the original window or trim.
Are window inserts expensive?
Compared to full window replacement, Indow Inserts are a budget-friendly alternative. You get noticeable energy savings and comfort improvements without the high costs of replacing your windows.
Do window inserts reduce heat?
Absolutely. In summer, they block solar heat before it enters your home. In winter, they help trap indoor warmth—making your space more energy-efficient all year long.
Is it worth replacing 20-year-old windows?
Not always. If your windows are still functional and you want to preserve your home’s character, window inserts may be a smarter choice. They enhance insulation and comfort without the expense or disruption of a full replacement.