Over 5000+ Happy Clients
Warmth Restored
Bills Reduced
Comfort Secured
Drafts in winter, muggy rooms in summer, running the HVAC nonstop, or dealing with cold floors, noisy walls, or rising bills are signs that the attic, crawl space, or wall insulation has worn down. Small gaps let heat escape, moisture sneak in, and noise travel through every room. Most families in Buffalo Grove do not realize how much comfort they are losing until the problem becomes a daily frustration.
OTS Chicago Insulation was started by Ofer Tsemah, who spent over a decade working hands-on inside homes across the Chicago area. He built the company around honest guidance and doing the work the right way the first time. When you choose our insulation services in Buffalo Grove, IL, you get a family-focused team that uses quality materials, clean installation practices, and building-science methods that deliver long-term comfort and reliability.
Better insulation reduces heat loss and uncontrolled airflow, so your HVAC system runs less, and your bills shrink month after month.
No more hot rooms, cold corners, or uncomfortable upstairs levels. Proper attic and wall insulation keeps your home steady all year.
Modern insulation materials help cut noise, manage moisture, and support healthier indoor air for your family.
“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 look at the attic, crawl space, walls, or ducts to identify heat loss, moisture issues, and insulation gaps.
You get a clear plan built around the right insulation type, whether spray foam, blown-in insulation, or energy efficiency sealing.
Our team installs everything carefully, protects your space, and verifies performance before we leave.
Honest, need-based recommendations
Push the same solution for every house
High-performance materials that last
Lower-grade materials that fail sooner
Skilled installers with real field knowledge
Poor cleanup and rushed workmanship
Clean work, respectful crews, no mess left behind
Minimal inspection and testing
Long-term comfort over short-term fixes
Temporary fixes that ignore root problems
Honest, need-based recommendations
With Us
Push the same solution for every house
With Them
High-performance materials that last
With Us
Lower-grade materials that fail sooner
With Them
Skilled installers with real field knowledge
With Us
Quick installs with minimal inspection
With Them
Clean work, respectful crews, no mess left behind
With Us
Poor cleanup and rushed workmanship
With Them
Long-term comfort over short-term fixes
With Us
Temporary fixes that ignore root problems
With Them
We rely on measurement, observation, and building science principles.
Insulation is installed to prevent gaps, compression, or airflow bypass.
Every project follows proven steps for consistent quality outcomes.
Our work reduces heat transfer through the building envelope.
Installers bring hands-on expertise to every project.
Insulation systems are designed to perform reliably over time.
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.
If you want better comfort, healthier air, and real energy savings, we are ready to help. Schedule a free insulation consultation today and get honest answers, expert installation, and long-lasting results you can feel in every room.
