Windows & Skylights in Knoxville, TN
Energy-efficient replacement windows and skylights for Knoxville and East Tennessee homes — often paired with sunroom and patio enclosure projects.
Upgrade Your Home with Energy-Efficient Windows
Windows are one of the most impactful upgrades you can make to your home. Old, drafty, single-pane windows are one of the biggest sources of energy loss in East Tennessee homes — letting heat escape in winter and hot air infiltrate in summer. Replacing them with modern, energy-efficient windows can lower your utility bills, reduce outside noise, improve curb appeal, and make your home more comfortable year-round.
ATC Sunrooms installs replacement windows and skylights for homeowners across Knoxville, Farragut, Maryville, Oak Ridge, and the surrounding area. With over 25 years of experience building sunrooms and glass-walled enclosures, our team knows windows. We understand glass performance, thermal efficiency, and proper installation technique — because that is what we do every day.
Every window project starts with a free in-home consultation. We measure your openings, discuss your priorities — energy savings, noise reduction, style, or budget — and recommend the right products for your home.
Our Window & Skylight Services
- Replacement Windows — Remove old windows and install new energy-efficient units in existing openings
- New Window Installation — Add new window openings as part of remodeling, additions, or sunroom projects
- Skylight Installation — Fixed and operable skylights that bring natural light into interior spaces
- Energy-Efficient Upgrades — Low-E glass, double-pane and triple-pane options, argon gas fill, and warm-edge spacers
- Window Styles — Double-hung, casement, sliding, bay, bow, picture, and awning windows in vinyl and fiberglass frames
Signs It Is Time to Replace Your Windows
Many Knoxville homes — especially those built before 2000 — still have original windows that are well past their effective lifespan. Here are the most common signs that your windows need replacing:
- Drafts and air leaks — You can feel cold air near windows in winter or warm air in summer, even when they are closed
- Condensation between panes — Moisture or fog trapped between double-pane glass means the seal has failed
- Difficulty opening or closing — Windows that stick, jam, or will not stay open indicate frame warping or hardware failure
- High energy bills — Inefficient windows force your HVAC system to work harder, driving up heating and cooling costs
- Outside noise — If you can clearly hear traffic, neighbors, or lawn equipment through closed windows, your glass and seals are not performing
- Visible damage — Rotting wood frames, cracked glass, peeling paint, or deteriorating weatherstripping all signal it is time for replacement
Energy-Efficient Window Technology
Modern replacement windows use several technologies to minimize energy loss and maximize comfort. When you work with ATC Sunrooms, we help you choose the right combination of features for your home and budget:
Low-E Glass Coatings
Low-emissivity coatings are microscopically thin metallic layers applied to the glass surface. They reflect infrared heat back into your home during winter and block solar heat gain during summer, reducing energy costs without noticeably affecting visible light transmission.
Double and Triple Pane Glass
Multiple panes of glass with insulating air or gas spaces between them dramatically reduce heat transfer compared to single-pane windows. Double-pane is the standard for replacement windows; triple-pane offers the highest performance for homeowners prioritizing maximum energy savings.
Argon Gas Fill
The space between panes is filled with argon — an inert, non-toxic gas that insulates better than air. Argon gas fill is a cost-effective upgrade that improves the window’s thermal performance, especially when combined with Low-E coatings.
Skylights — Bring Natural Light Inside
Skylights are an excellent way to introduce natural light into spaces that windows alone cannot reach — hallways, bathrooms, kitchens, and interior rooms. Modern skylights are engineered to be energy-efficient, leak-proof, and easy to maintain, a far cry from the problematic skylights of decades past.
We install both fixed skylights (for light only) and operable skylights (for light plus ventilation). Many of our skylight installations happen alongside sunroom or solarium projects, where skylights in the main house complement the sunroom’s glass walls for a seamless indoor-outdoor light experience.
All of our skylights feature tempered safety glass, UV-filtering coatings, and proper flashing systems to prevent leaks. We handle the structural work, roofing integration, and interior finishing so you get a turnkey installation.
Windows & Sunroom Projects — A Natural Pairing
Window replacement and sunroom construction go hand-in-hand more often than you might expect. When we build a sunroom addition, the wall where the new room connects to your existing house often has windows that become interior-facing — or that get removed entirely. Many homeowners take this opportunity to upgrade the windows throughout the rest of the home, especially the windows on the same side of the house as the new sunroom.
Bundling window replacement with a sunroom, screen room, or patio enclosure project saves on mobilization costs and ensures consistent glass quality and appearance across the entire project. It is also more convenient — one construction timeline instead of two.
Ready for New Windows or Skylights?
Schedule a free in-home consultation. We will measure your windows, discuss your goals, and provide a clear, no-obligation estimate.
Explore Our Other Services
Windows and skylights are part of our complete home improvement offering. See what else we can do for your home:
- Roofing — Roof replacement, repair, and storm damage restoration through our sister company.
- Siding & Gutters — Vinyl siding installation, seamless gutters, and gutter guards.
- Sunrooms — Custom all-season, three-season, Florida rooms, and solariums.
- Screen Rooms — Screened porches and patios for bug-free outdoor living.
- Patio Enclosures — Convert your existing patio or deck into enclosed living space.
