Spray Foam Insulation in West Covina, CA

Our heat pump was constantly running until we had Air Tight Insulation perform their comprehensive service. By sealing the attic, crawlspace, and rim joists, they stabilized the home's thermal envelope. Now the heat pump runs normal cycles and keeps the house perfectly comfortable. The technicians were true experts, explaining complex concepts in simple terms. A brilliant investment that pays daily dividends in comfort and savings.

We contacted Air Tight Insulation to solve the draftiness in our older Pomona home. Their team performed an exceptional air sealing and insulation job in our attic. The focus on sealing every gap before adding insulation made all the difference. Our home is now consistently comfortable, significantly quieter from outside noise, and our heating system no longer struggles. The crew was professional, clean, and efficient. The results have exceeded our expectations and the energy savings are real.

We were impressed with the expertise from the very first call. Air Tight Insulation didn't just offer to add more insulation; they explained the critical importance of air sealing for efficiency and comfort in our climate. The crew that came out was skilled and meticulous. They transformed our attic into a properly sealed and insulated space. The house is now cozy in the winter without the furnace running constantly. Excellent workmanship and customer service.

I'm really happy with the job that was done. They said what they were going to do and delivered. Highly recommended

Top quality job by top quality workers. Highly recommend

We hired Air Tight Insulation to address serious energy loss in our West Covina home, and the experience was outstanding. Their team used a blower door test to scientifically pinpoint where our home was leaking air. The sealing work they performed was incredibly meticulous—around windows, doors, attic hatches, and all penetrations. The crew was professional, clean, and thorough. Our home now feels solid, quiet, and maintains a perfect temperature. This is true building science expertise.

Amazing service from qualified personel

Outstanding expertise and execution. I've worked with other insulation companies, but none with this scientific approach. Air Tight Insulation of El Monte focuses on building performance, not just installing material. Their initial assessment was the most detailed we've ever seen. The installation team was skilled, efficient, and took great pride in their craft. Our HVAC system now runs efficiently and our utility bills have plummeted. Highly recommend for anyone serious about home efficiency.

Solid work, awesome customer service, quick to return calls and respond.

Best customer service and very detail oriented. Will definitely be a repeat customer.

High class professional! Knows what he is doing. Amazing costumer communication

I manage several rental properties and have used Norwalk Insulation Pros for two different units now. They are my go-to for insulation work because of their reliability and quality. They understand the needs of investment properties, providing effective solutions that improve tenant comfort without breaking the bank. Their crews are always professional, the work is completed on schedule, and the communication from the office is excellent. They’ve helped me reduce utility costs and increase tenant satisfaction. A trustworthy and highly competent local business.

As a new homeowner, I was overwhelmed by the process of reinsulating. The team at Norwalk Insulation Pros made it simple. They provided a clear, detailed quote, explained the process in terms I could understand, and offered great advice without any pressure. On the day of the job, the crew was efficient and mindful of our property. They achieved amazing coverage and sealed every gap they found. The improvement in comfort is unbelievable, and we’re already saving on our heating costs. Their professionalism and expertise made a potentially stressful project completely smooth.

Our experience with Norwalk Insulation Pros was exceptional from start to finish. We were impressed by their thoroughness during the estimate—they didn't just glance at the attic but did a full walk-around to identify potential problem areas. The installation crew was fantastic; they worked hard, answered all our questions, and even pointed out a small vent issue we were unaware of. The finished work is neat, even, and exceeds building codes. Our house is noticeably quieter and holds temperature perfectly. It’s clear they take pride in their craft and customer satisfaction.