Cornerstone IAQ Services LLC

4.9
48 reviews

About

Air Duct Cleaning Service
With integrity and passion at the center of what we do, we are ready to care for your indoor air. Our team uses the latest techniques to clean dryer vents, air ducts, and mold remediation. From commercial to residential properties, we provide the highest quality services in order to achieve optimal results. So give us a call, and let us care for the air you breathe.

Location

Cornerstone IAQ Services LLC
1 Corporate Park Drive, Derry, NH
03038, United States

Hours

Reviews

4.9
48 reviews
5 stars
46
4 stars
0
3 stars
1
2 stars
1
1 star
0
  • RL
    Ryan Leland
    Aug 30, 2025
    5.0
    Jason and team are professional, courteous, and do the job well. This team is our go-to for remediation and vent cleaning work. They can be counted on for top notch service and distinct care for the needs of the customer.
  • AM
    Alison Moore
    Aug 15, 2025
    5.0
    The Cornerstone crew was knowledgable, prompt, attentive, and did a great job ridding our basement of mold! We had our HVAC ducts cleaned as well and noticed a difference immediately! We had some additional basement sealing and drywall repair to do as a result of our remediation efforts and they were helpful in putting us in touch with recommended contractors to finish up the work. The price was the best around! I would 100% recommend Jason and his team for future work.
  • JJ
    JLB JLB
    Jul 10, 2025
    5.0
    Great job cleaning dryer vents, very professional, on time, notified you when they were on their way. Cleaned up well. Can’t believe how much crap was in the dryer ducts. Need to do it more often and their process makes it convenient and easy. Will have them back next year.
  • JG
    Jack Gray
    Jun 19, 2025
    5.0
    Jason and Chris cleaned all our ductwork, as well as our dryer vent and did a great job. We were happy with their work and their professionalism. Chris G.
  • RM
    Rachel McPherson
    Mar 28, 2025
    5.0
    We hired Cornerstone for a small mold job in our bathroom, and Jason was great from start to finish. As someone with mold allergies, I was especially appreciative of how cautious and mindful he was every step of the way, ensuring the job was done safely and thoroughly. He came highly recommended, and now I understand why! We couldn’t be more pleased and would absolutely recommend Cornerstone to anyone in need of mold remediation-- especially if you have any kind of mold sensitivity!