A Real Family. A Real Climate. A Smarter Choice.
When Sarah and David moved back to northern New Jersey to raise their two children, they knew the seasons would be demanding. Winter could bring blizzards and single-digit temperatures. Spring? Heavy rains. And in the summer, sticky humidity meant the air conditioning never seemed to stop running.
They bought a charming 1970s split-level home with character, but also with original windows that hadn’t aged well. “Every room was a different temperature,” Sarah said. “We had condensation, whistling drafts, and sky-high utility bills.”
They bought a charming 1970s split-level home with character, but also with original windows that hadn’t aged well. “Every room was a different temperature,” Sarah said. “We had condensation, whistling drafts, and sky-high utility bills.”
The Landmark 70s Series is part of Luvindow’s High Performance Tilt Turn Windows line — specifically designed for homes and projects that require year-round energy savings, flexible use, and reliable protection.
With thermal break aluminum window frames, triple-pane Low-E glass, and a U-value as low as 0.23, the Landmark 70s delivers proven performance across cold, wet, or hot climates.
Unlike many other imported tilt-turn systems, it combines top-tier specifications with smart pricing, making it an ideal choice for everything from single-family homes to multi-unit buildings. “Our utility bills dropped almost immediately,” David said. “It just made the whole house more livable.”
Tilt & Turn: Safe Ventilation + Easy Cleaning
- A single handle operates two functions：Tilt in for secure top ventilation；Turn inward for full opening and glass cleaning
- Child-safe and pet-friendly airflow option
- Built with home windows with German hardware for smooth, secure motion
ENERGY STAR® Certified Performance
- NFRC-verified and EnergyStarWindows compliant
- U-value of 0.23, keeping indoor temperatures steady year-round
- Triple glazing with argon fills blocks heat in summer and traps warmth in winter
- Ideal for replacement windows for energy savings or passive home upgrades
Advanced Drainage + Sealing
- Built-in pressure-equalized drainage system
- Triple compression gaskets for water tightness
- Withstands high wind conditions — certified as hurricane impact windows
Fully Customizable to Home Style
- Supports multiple formats: fixed, inward/outward opening, tilt-turn, top-hung
- Frame depths and finishes tailored to modern or traditional builds
- Compatible with built-in blinds, low-profile handles, smart locks, and more
- Delivers true custom tilt turn window design flexibility
Whether you're designing for a craftsman home, urban duplex, or countryside lodge, the Landmark 70s offers the finish and function to match.
Case 1: Suburban Renovation in New Jersey
When Sarah and David relocated to northern New Jersey to raise their two young children, they purchased a charming 1970s split-level home with personality—but also with problems. The windows, original to the house, were leaky, noisy, and inefficient. Each room felt like its own climate zone. In the mornings, they’d wake to condensation clouding the glass. In the evenings, cold drafts crept through the seams. Traffic noise from the nearby street echoed inside, no matter how tightly the windows were shut.
“Every room was a different temperature,” Sarah recalled. “And our energy bills kept climbing.”
Determined to fix the issue without compromising the character of their home—or overspending—they chose Luvindow’s Landmark 70s Tilt-Turn Windows.
The impact was immediate. The house felt quieter. Warmer in winter. Cooler in summer. Each window opened smoothly, allowing fresh air in without compromising safety or thermal control. The once-inconsistent indoor climate stabilized, and their utility bills dropped noticeably.
“We didn’t know windows could make this much of a difference,” Sarah said. “Now, our mornings are peaceful, and even storms feel distant.” The house they loved finally felt like home—comfortable, functional, and ready for the seasons ahead.
Case 2: Boutique Hotel Transformation in Missouri
In the heart of Missouri, a 24-room boutique hotel was struggling to meet the modern expectations of its guests. The owners frequently heard complaints: the rooms were drafty in the winter and stuffy in the summer, and road noise disturbed sleep. Additionally, rising energy costs were eating into profit margins. Realizing that a patchwork of repairs wasn’t enough, the team invested in a full-scale window upgrade using Luvindow’s Landmark 70s commercial-grade tilt-turn windows.
The transformation was dramatic. Within weeks, energy use dropped by nearly 30%. Guests praised the quiet and restful nature of their stays. The sleek black frames and cleaner sightlines elevated the entire building’s façade, adding contemporary curb appeal without altering its architectural charm.
“It wasn’t just an upgrade,” the hotel manager reflected. “It changed the feel of the entire property.” What started as a retrofit to solve comfort issues became a major branding asset, improving aesthetics, experience, and efficiency in one strategic move.
Every Landmark 70s window is backed by the full-service infrastructure of Doorwin Windows Inc., ensuring U.S. clients receive expert support throughout the process — from project planning to after-sales care.
Nationwide Installation Network
Whether you're upgrading five windows in a suburban home or specifying 150 units for a multi-story commercial project, Doorwin Windows Inc. works with certified local partners across the United States. This ensures precise delivery, efficient installation, and responsive support — wherever you are.
Fast 48-Hour Technical Response
Our technical service team offers 48-hour response in 39+ U.S. states, including major metro areas like New York, Chicago, Los Angeles, Dallas, and Atlanta. Need onsite inspection, spec confirmation, or a quick adjustment? We’re ready to assist — fast, local, and professional.
Visit Our Showrooms — In Person or by Appointment
Want to experience the Landmark 70s before you decide? Visit our California headquarters showroom in Los Angeles or our Texas branch showroom in Dallas. Each location offers hands-on access to:
- Full-size product demos
- Glass & frame finish options
- Acoustic and thermal performance comparisons
- 1-on-1 consultations with our product specialists
New regional showrooms are coming soon — four more cities will be added by the end of 2026 to better serve our growing U.S. customer base.
Final Thoughts — More Than a Window
In homes and hotels across the country, the Landmark 70s Tilt-Turn Series has already proven what smart engineering and thoughtful design can do. From quieter nights to lower bills, from sleeker facades to safer airflow, these windows deliver real benefits — in every room, every season.
If you’re ready to invest in comfort, reliability, and long-term value, Landmark 70s is more than a solution — it’s the new standard.
Looking for high efficiency tilt and turn windows USA? Or searching for affordable energy star windows for new construction? Discover the Landmark 70s at Luvindow.
