Over 5000+ Happy Clients
Better Comfort
Lower Bills
Healthier Homes
If your home feels drafty in winter, overheated in summer, or your energy bills keep climbing, poor insulation is often the hidden cause. Gaps in the attic or walls let energy escape, forcing your HVAC system to work harder and longer. Over time, this leads to uneven temperatures, higher costs, and even moisture issues that affect indoor air quality. Many homeowners are unaware that outdated or damaged insulation quietly drains comfort and money every month.
OTS Chicago Insulation was founded by Ofer Tsemah after more than 10 years of hands-on experience improving comfort, energy efficiency, and air quality in homes across the Chicago area. After working directly in the field, he built the company around honest recommendations and doing the job right the first time. We are a locally owned business that focuses on quality materials, proper installation, and long-term results. Our mission is to help homeowners create healthier, more comfortable, and more energy-efficient homes.
Energy-efficient insulation reduces heat loss and air leaks, helping cut utility bills and improve thermal performance year-round.
Proper attic and wall insulation keeps temperatures even across your home, no more hot or cold rooms.
Quality insulation materials help with sound reduction, moisture control, and better indoor air quality 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
So you can enjoy a more comfortable, energy-efficient home with confidence.
We inspect your insulation, identify problem areas, and explain the best solution in clear, simple terms.
Our team measures attic and wall spaces and selects the right insulation material for performance and efficiency.
Certified installers complete the insulation installation carefully, following building science and safety standards.
Honest recommendations based on real needs
Push one-size-fits-all solutions
High-quality, energy-efficient materials
Lower-grade insulation materials
Experienced, hands-on installers
Rushed installations
Clean, careful installation process
Minimal inspection or testing
Long-term comfort and savings focus
Short-term fixes, long-term problems
Honest recommendations based on real needs
With Us
Push one-size-fits-all solutions
With Them
High-quality, energy-efficient materials
With Us
Lower-grade insulation materials
With Them
Experienced, hands-on installers
With Us
Rushed installations
With Them
Clean, careful installation process
With Us
Minimal inspection or testing
With Them
Long-term comfort and savings focus
With Us
Short-term fixes, long-term problems
With Them
We identify hidden air leaks, moisture risks, and insulation gaps before recommending any installation or replacement work.
Every insulation material is chosen for proper R value, moisture control, and long-term thermal performance.
Our team protects your home or workspace while completing insulation work efficiently, safely, and without unnecessary disruption.
We prioritize air sealing and insulation placement that stops wasted energy and stabilizes indoor temperatures year-round.
All guidance comes from hands-on field experience, not sales scripts or one-size solutions.
Our insulation solutions are designed to maintain comfort, efficiency, and performance long after installation is complete.
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 a free insulation consultation today and get clear answers, honest recommendations, and expert installation that lowers energy bills, improves comfort, and protects your home for years with confidence guaranteed.
