Top Duct Insulation & Sealing Services in Romeoville, IL

Fast Service and excellent price. The team did a great job on our air ducts. I will recommend it for sure!! They are very neat and don't leave a mess.

Kulacz & Sons are great. I had to call after hours for no heat! I was not charged extra for the service and the service tech new what I needed and was able to fix right away at a very reasonable price.

Levar was very hardworking and well priced but unfortunately I think he underestimated the time it would take to complete our project. Despite having paid him in full, he has not returned to finish our project. Sadly, I think the quality of his work woul...

Excellent work

I called NLB because my furnace quit working and I couldn't be happier! Nick came out immediately and fixed the problem. He is extremely knowledgable and friendly. Nick was more thorough than other companies I have had out in the past and was more afforda...

Our AC unit went down in the spring of 2014. I called NLB and Nick and his team responded immediately. I had invested a great deal of money in the unit with another contractor a few years ago, and frankly, I was overcharged and the work was terrible--henc...

Company has good integrity and honest. Nick was on time, did excellent work, and gave me a very fair price on my AC repair last summer. I would definitely use again and refer him.

I've been using NLB since 2009 and can't begin to tell you how much they have done for my family. They have maintained our old AC and have made a few emergency calls from me when we were without heat a few winters ago. We purchased a new package from them...

Very honest. Something you don't see very often nowadays. I was told by another furnace repair guy that my furnace was shot and I would need to replace it. the guy seemed a little pushy so I decided I would get one more opinion before I spent all that mon...