Window Installation In Hartford, CT
Service Backed By Generations of Experience
When you own a home in Hartford, your windows need to do more than look the part — they need to perform in every season. Icy winters, humid summers and historic architecture demand precision and durability. At Mercury Excelum, Incorporated, also known as Earthwise Windows of Hartford, Connecticut, we bring over 70 years of manufacturing excellence to every project.
We’re not just installing windows — we’re upgrading comfort, energy efficiency and curb appeal with products built for New England weather and crafted with American pride. Whether you're dealing with outdated windows or planning a full renovation, we offer custom-built window installation in Hartford, CT, tailored to your home and lifestyle.
Replacement Windows That Match The Character Of Your Home
Hartford homes are full of history and charm — but many still have original windows that underperform when it comes to insulation, security and noise control. That’s where we come in. Our team provides window replacement in Hartford that preserves the look of your home while dramatically improving comfort and performance.
At Mercury Excelum, we manufacture and install vinyl windows that are custom-sized to your space and your aesthetic. You don’t have to settle for basic white frames or bulky units that don’t fit — our windows can be styled to match any era, from Colonial to Mid-Century to Contemporary.
Built To Withstand Connecticut’s Climate
If you live in Hartford, you already know: the seasons are beautiful, but brutal. Frigid winds, snow buildup, driving rain and summer humidity all take a toll on your home’s exterior — and poorly performing windows make it worse.
Our Hartford replacement windows are designed with this climate in mind. Every product we manufacture and install is crafted with advanced insulation, weather-resistant materials and durable hardware that stands up to New England conditions.
Local Craftsmanship With National Standards
As part of the Earthwise Group, Mercury Excelum combines decades of local knowledge with national product development standards. That means the replacement windows in Hartford we install aren’t shipped from a warehouse across the country — they’re built in our region, for our region.
And because we’re both the manufacturer and the installer, we maintain full control over the quality of your windows from start to finish. There are no middlemen, no off-the-shelf shortcuts — just dependable performance and a perfect fit.
We’re Proud To Serve Hartford And Beyond
We provide window installation in Hartford, CT, and across central Connecticut, including West Hartford, Newington, Glastonbury, Wethersfield and beyond. From newer neighborhoods to historic streets lined with brick homes, we tailor every project to fit the specific needs of your property.
And because our team is local, we understand the details that matter here — like building codes, HOA restrictions, energy rebates and even the quirks of older homes.
A Partner You Can Trust, A Product You Can Rely On
Mercury Excelum has been a trusted name in home exteriors for more than 70 years. Our roots are in Connecticut, and we’re proud to remain family-owned and community-focused. As Earthwise Windows of Hartford, we bring that same dedication to every window we design, build and install.
Whether you’re replacing a single drafty window or upgrading your entire home, we treat your project with the same level of attention and professionalism.
Ready To Upgrade With The Best Window Replacement In Hartford?
If your current windows are fogging, sticking, leaking or just not doing their job, it’s time to make a change. At Mercury Excelum, we make window replacement in Hartford, CT, simple, transparent and stress-free.
Reach out to schedule your free consultation and discover how much better your home can feel with the right windows in place.
Let Mercury Excelum, your trusted window company in Hartford, help you see the difference — literally.
Frequently Asked Questions:
Double-pane windows and triple-pane windows with insulated glass systems are best for withstanding cold weather. These provide better insulation than single-pane windows, ultimately reducing the cold air entering your home.
To determine if historic windows can be replaced, check with the town or district the home is located in. If permitted, window replacements in historic homes must usually be done with historically-accurate products to the home's time period.
Double-hung, light-toned windows are a classic feature of Cape Cod homes. Earthwise Windows of Hartford, Connecticut are custom-made specifically to meet the needs of the climate in the Northeast.
Get in Touch With Earthwise of Hartford, Connecticut
Call us at 860-292-1800 or fill out the form below and we will have an Earthwise Specialist contact you: