From detailed insulation inspection to expert installation, we help you improve comfort and energy efficiency with the right insulation solution, completed cleanly and without guesswork, often within one week.
Over 5000+ Happy Clients
Better Comfort
Lower Bills
Healthier Spaces
Drafty rooms, rising energy bills, noisy spaces, and temperature swings are signs that insulation is not doing its job. Gaps in the attic or walls let energy escape, forcing heating and cooling systems to work harder. Damaged or outdated insulation also leads to moisture problems and poor indoor air quality. Many homeowners and businesses do not realize how much energy loss happens silently every day until comfort becomes a constant battle.
OTS Chicago Insulation began with Ofer Tsemah, who spent more than a decade working directly in homes throughout the Chicago area. During that time, he saw how much comfort, energy efficiency, and air quality could improve when insulation is installed correctly. He built the company on simple values, honest recommendations, quality materials, and work done right the first time. As a locally owned business, our mission is to help homeowners enjoy healthier air, better comfort, and long-lasting energy savings with insulation they can trust.
We enhance attic insulation to control heat transfer, reduce energy loss, and create balanced indoor temperatures. Every installation is designed for long-term comfort, improved efficiency, and better overall home performance.
Our team seals and insulates crawl spaces to block moisture, prevent drafts, and support healthier air. Encapsulation strengthens your home’s foundation and delivers a more stable and efficient indoor environment.
Spray foam creates a powerful air barrier that seals gaps and boosts thermal performance. It improves comfort, reduces noise, and offers long-lasting efficiency for both homes and commercial spaces.
We install sound-dampening insulation to minimize noise transfer and improve privacy. This service is ideal for bedrooms, offices, studios, and any area needing better acoustic control.
Our wall insulation solutions improve thermal resistance, reduce drafts, and support more consistent indoor temperatures. Properly insulated walls help lower energy costs and create a more comfortable living environment.
We insulate rim joists and basement walls to stop cold air infiltration, control moisture, and strengthen your home’s building envelope. This improves year-round comfort and protects the structure.
Our air sealing process targets hidden gaps and leakage points that reduce insulation effectiveness. This helps maintain indoor comfort, reduce energy waste, and support proper HVAC performance.
We insulate ductwork to prevent heat loss and improve airflow efficiency. Duct insulation supports consistent indoor temperatures, reduces utility costs, and helps your HVAC system run more smoothly.
Energy-efficient insulation reduces heat loss, improves thermal resistance, and helps cut monthly utility costs.
Proper attic and wall insulation stops drafts and eliminates hot and cold spots throughout your property.
Quality insulation materials reduce noise, improve indoor air quality, and help prevent moisture-related issues.
“I live in Buffalo Grove, IL, and recently hired OTS Chicago Insulation to insulate my crawl space and I’m extremely happy with the results! After doing some research and calling a few companies, I chose OTS because of their professional approach and detailed consultation. Ofer, the technician who came out, was knowledgeable and explained the benefits of crawl space insulation, including how it would improve energy efficiency and reduce moisture issues in my home.It’s been a few months since the installation, and I’ve noticed a big difference. The floors on the first level are no longer cold, the air quality has improved, and our heating system isn’t working as hard. This means real energy savings!
We have 100+ 5-star reviews on
We inspect your existing insulation, identify issues, and explain your best options in simple terms.
We measure attic and wall spaces and choose the correct material for energy efficiency and insulation performance.
Certified installers complete your insulation installation using building science, safety standards, and high-quality materials.
Honest recommendations based on real needs
One-size-fits-all solutions
High-quality, energy-efficient insulation materials
Lower-grade materials
Experienced, hands-on installers
Rushed installations
Clean and careful installation process
Minimal inspection and testing
Long-term comfort and savings focus
Short-term fixes that fail over time
Honest recommendations based on real needs
With Us
One-size-fits-all solutions
With Them
High-quality, energy-efficient insulation materials
With Us
Lower-grade materials
With Them
Experienced, hands-on installers
With Us
Rushed installations
With Them
Clean and careful installation process
With Us
Minimal inspection and testing
With Them
Long-term comfort and savings focus
With Us
Short-term fixes that fail over time
With Them
Spray foam insulation Chicago IL delivers powerful air sealing, moisture control, and long-term energy performance in one solution. Our team installs high-quality open-cell and closed-cell foam that expands to protect your home from drafts, uneven temperatures, and rising energy costs. The result is a quieter space, stronger comfort, and year-round stability backed by expert installation.
We identify uneven temperatures and insulation gaps affecting comfort throughout the property.
Each solution is tailored to structure, layout, and usage, not a preset package.
Installers follow step-by-step processes to avoid missed areas or compression issues.
Our methods address thermal leaks that drive up energy costs and discomfort.
Work is completed by trained professionals responsible for quality and accuracy.
Solutions are engineered to deliver consistent comfort and insulation efficiency.
We help nearby communities with complete insulation solutions, including attic upgrades, spray foam insulation, crawl space encapsulation, soundproofing, wall and rim joist insulation, air duct insulation, and air sealing services that improve comfort, efficiency, and long-term performance.
Schedule your free insulation consultation today and get clear answers, honest recommendations, and professional installation that improves comfort, lowers energy use, and protects your home or building for years.
