At Duct Diagnostics, our goal is to achieve 100% customer satisfaction. We service the entire state of CT, and specialize in residential & commercial air duct cleaning. Our state-of-the-art duct cleaning equipment is contaminant-free and approved for use in sterile environments, such as hospitals and laboratories. Our professionally trained staff prides themselves on a job well done and gives the same consideration to all jobs - large or small. Integrity is the key to our success and the reason why we never have an unhappy customer.
Highlights and features
- Professional duct cleaning for healthier air quality.
- Certified, experienced technicians for superior service.
- Residential and commercial duct cleaning solutions.
- Improving HVAC system efficiency with proper cleaning.
- Integrity and transparency with every duct cleaning job.
Payment methods
- Cash
- Debit cards
- Credit cards
Services
Todays homeowners know that a healthy home starts with clean air. Dust, allergens, and hidden buildup inside your ducts can impact both comfort and well-being. By choosing Duct Diagnostics professional Residential Duct Cleaning, youre not only protecting your familys health but also improving the efficiency of your heating and cooling system. A cleaner system runs smoother, lasts longer, and helps create the kind of fresh, safe environment every home deserves.
Indoor air quality directly impacts the health, safety, and comfort of everyone who enters your building. Over time, ducts collect dust, dander, chemicals, and other contaminants that can worsen allergies, aggravate respiratory conditions, and create long-term health risks.
Duct Diagnostics provides expert duct cleaning services for a wide range of commercial facilities. We are trusted by hospitals, schools and colleges, museums and galleries, aquariums, military facilities, churches, laboratories, clean rooms, and office buildings across Connecticut. Each of these environments requires a different level of care, and our highly trained team understands how to deliver precise, effective results every time.
Duct Diagnostics provides expert duct cleaning services for a wide range of commercial facilities. We are trusted by hospitals, schools and colleges, museums and galleries, aquariums, military facilities, churches, laboratories, clean rooms, and office buildings across Connecticut. Each of these environments requires a different level of care, and our highly trained team understands how to deliver precise, effective results every time.
Dryers are essential in both homes and businesses, but without proper maintenance, they can quickly become a serious fire hazard. Each year, nearly 3,000 dryer fires are reported in the United States, causing millions of dollars in property damage and putting lives at risk. The leading cause of these fires is clogged dryer vents filled with lint and debris.
At Duct Diagnostics, we provide professional dryer vent cleaning services that restore safe airflow and reduce the risk of fire. By clearing lint and other obstructions, we not only protect your property but also improve your dryers efficiency, helping it run faster and last longer. With regular maintenance, youll have peace of mind knowing your dryer is safe, reliable, and working the way it should.
At Duct Diagnostics, we provide professional dryer vent cleaning services that restore safe airflow and reduce the risk of fire. By clearing lint and other obstructions, we not only protect your property but also improve your dryers efficiency, helping it run faster and last longer. With regular maintenance, youll have peace of mind knowing your dryer is safe, reliable, and working the way it should.
Aeroseal provides a highly effective solution for sealing leaks in duct systems. Developed using cutting-edge aerosolized technology, it targets leaks that are difficult to reach with traditional sealing methods. The result is a more energy-efficient system, lower utility bills, and better air quality, making your environment healthier and more comfortable.
Reviews (17)
Robby Guthrie
Dec 21, 2025
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William Peltzman
Dec 18, 2025
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The 3 man cleaning crew was knowledgeable, courteous and professional.
Wherever the worked they cleaned up after themselves
I thought the $2,850 price was excessive but I have nothing to compare it to
I need to wait a week before I can judge the effectiveness of the cleaning
I was shown pictures of the duct interior and they appear cleaner
Wherever the worked they cleaned up after themselves
I thought the $2,850 price was excessive but I have nothing to compare it to
I need to wait a week before I can judge the effectiveness of the cleaning
I was shown pictures of the duct interior and they appear cleaner
Bobby Dorflinger
Nov 17, 2025
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Thomas Scull
Oct 13, 2025
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Sandra Orleman
Jul 22, 2025
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John B.
Jul 11, 2025
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Excellent work by Jim, Vince and Bailey (hopefully I spelled that correctly). Couldn't be more pleased with their professionalism and efficiency at doing their job. Showed real respect and care for my home as well. I was a bit of a skeptic at first if the result would be worth the above average investment but I'm amazed at the results. The before & after doesn't lie. There will always be dust and trash in my life but to know that at one point in time my duct work is clean and starting relatively fresh brings me and my family a great relief and peace of mind.
Meghan Saccone
Jun 07, 2025
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Lisa Durante
May 28, 2025
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Rebecca Surprenant
May 19, 2025
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Ct Ct
May 04, 2025
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Having two dogs my ductwork was a mess. From the estimate to the cleaning itself, I cant say enough about this crew. They were on time which is huge in my book. The job was completed in a reasonable amount of time. They were conscientious about everything. I would not hesitate to call or recommend them.
Matthew Miller
Apr 13, 2025
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Randy, Leo and Gibson arrived on time and were immediately welcomed by and welcoming to my dog. They then proceeded, with explanation, to do their duct cleaning job with incredible speed, skill, and good humor. Could not have asked for a more professional experience. Anyone with heating ducts MUST have this done, by these guys.
Joseph Kropf
Mar 13, 2025
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Eric and Jayden showed up right on time and they were friendly and courteous. They took great care setting up inside as they had to work in every room. The reverse HEPA filter was amazing at keeping the house perfectly clean and after 4 hours they were finished and it was like they were never even there. Eric showed me some before and after photos of inside the ducts which was quite impressive. I highly recommend Duct Diagnostics!
Sharon DeFala
Mar 10, 2025
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Amber Jones
Jan 05, 2025
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I couldnt be happier with our duct cleaning service! From the moment I called to schedule the appointment it was a delightful experience. Everyone from the receptionist, owner to the workers were great!! The guys were very friendly & professional. They explained everything before, during and after. They included pictures as well so I could see whats happening inside my vents. I find the price to be worth every penny! They will be coming back again to do my heating vents and dryer vents for sure!
Jon Petoskey
Dec 24, 2024
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Robert Finkel
Oct 25, 2024
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I used Duct Diagnostics for the first time and was very pleased with the service. The crew arrived on time and completed the job as proposed. They also showed before/after pictures which highlighted the amount of dirt, dust and debris that had accumulated and that it had all been cleaned out. It was definitely worth the investment to have this work done the right way.
Nordica
Aug 24, 2024
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I first had the pleasure of working with Duct Diagnostics a few years ago, and my experience with them was exceptional. Their team demonstrated a high level of professionalism and thoroughness, ensuring that every detail was addressed. Their services were not only affordable but also remarkably efficient, leaving me thoroughly satisfied with the results. Recently, I encountered an issue with my air ducts, and once again, Duct Diagnostics impressed me. They dispatched a technician to my home within 48 hours, and to my surprise, the service was provided free of charge. This level of responsiveness and customer care speaks volumes about their commitment to client satisfaction. I highly recommend Duct Diagnostics for anyone seeking reliable, professional, and affordable services.