Business Details
47 Years
experience
Energy-Efficient Interior Window Systems
Since 1979, Thermolite has been a leading innovator in secondary interior window systems. As a GSA-certified federal government contractor, we serve clients nationwide with expertise in enhancing building performance through interior window retrofits. Our patented Thermolite Window System transforms existing glass into high-performing windows, offering energy efficiency, security, and preservation of historic aesthetics. We specialize in serving diverse industries including government, healthcare, education, and commercial sectors. Our solutions reduce energy costs by up to 20% while maintaining architectural integrity.With installations in major cities like Washington DC, New York City, and Chicago, we combine over four decades of experience with cutting-edge technology. Our team of engineers and architects understands performance contracting and provides at-risk assessments to guarantee energy savings. We offer firm fixed pricing and work directly with Energy Service Companies (ESCOs) to maximize ROI. Our products are manufactured in the USA and available for direct purchase nationwide. Backed by third-party thermal analyses, our systems deliver measurable energy savings and security enhancements.
Services
Blast Mitigation Windows
Hurricane Protection Systems
Sound Control Windows
Historic Retrofit Solutions
Energy Modeling Services
Signal Defense Windows
Curtain Wall Retrofits
Details
- Year established: 1979
Highlights and features
- We offer patented interior window technology with proven energy savings
- Our team has 40+ years of experience in window retrofit solutions
- We guarantee R-value improvements and energy cost reductions
- Our discreet installations maintain historic building integrity
- We provide firm fixed pricing with incomplete assessment information
Associations and certifications
- GSA
Services
Blast Mitigation Windows
Thermolite's Blast Safety Series windows use patented Compression Release Technology to withstand high-pressure impacts without structural reinforcement. These systems protect buildings from bomb blasts while maintaining energy efficiency. Ideal for government facilities and high-security commercial properties requiring discreet protection.
Hurricane Protection Systems
Our Hurricane Storm Series withstands Category 5 hurricane winds with interior-mounted systems that meet strictest building codes. Provides protection without altering exterior aesthetics. Suitable for coastal commercial buildings and critical infrastructure facilities in storm-prone regions.
Energy Modeling Services
We use DOE-certified software to model energy savings from window retrofits, showing precise R-value improvements and ROI projections. Helps ESCOs and building owners optimize energy performance contracts with guaranteed thermal performance data.
Historic Retrofit Solutions
Interior-mounted systems upgrade single-pane historic windows to double/triple-glazed efficiency without replacing original glass. Maintains architectural integrity while reducing energy costs by up to 20% for listed buildings and heritage structures.
Signal Defense Windows
CyberWAL technology uses transparent metal coatings to block electromagnetic surveillance and audio espionage. Protects sensitive data in financial institutions and government buildings while maintaining visible light transmission and energy efficiency.
Questions
What is Thermolite's patented window system?
Our patented system retrofits existing windows with interior frames to create high-performance windows that improve energy efficiency, security, and sound control without replacing original glass.
How much energy savings can Thermolite windows provide?
Our systems reduce annual energy consumption by an average of 20% through improved insulation, lowering HVAC expenses and providing measurable ROI.
Can Thermolite windows protect against security threats?
Yes, our Blast Safety Series withstands bomb blasts using patented technology, while Hurricane Storm Series resists Category 5 winds and forced entry systems prevent break-ins.
Are Thermolite windows suitable for historic buildings?
Yes, our interior installation preserves exterior facades and historic integrity while upgrading energy performance and security features.
How long does Thermolite window installation take?
Installation typically takes 4-6 weeks after design approval, with discreet off-hour options to minimize building disruption.
