Duct Diagnostics

Duct Diagnostics operates from Milford, Connecticut, delivering specialized air duct cleaning services to residential and commercial clients across the Nutmeg State. With 277 verified reviews generating a 4.9-star average, the company has built its reputation on methodical, equipment-driven duct sanitation rather than superficial dust removal. Their service footprint covers Milford and surrounding Connecticut communities, scheduling appointments Monday through Friday from 9 AM to 5 PM.

The company distinguishes itself through documented transparency and certified methodology. Technicians provide before-and-after photography so clients witness the actual debris extraction from ductwork, returns, and main trunk lines. Duct Diagnostics offers Aeroseal duct sealing as an advanced remediation option for systems suffering chronic air loss, and they service commercial HVAC units alongside residential setups. Their service menu explicitly excludes gimmicky solutions in favor of measurable, repeatable results.

Customer reviews name specific technicians who handled particular scenarios. Tyler Crouse's review describes a six-hour residential job where the crew cleaned HVAC returns, floor grates, ceiling grates, and all vents while answering questions throughout the process. For Spencer Bird, the team arrived punctually, explained each step, and completed work on the same day. Parviz Kermani notes that the crew, specifically Bobby and John, came recommended by an unrelated HVAC company and performed what he describes as a meticulous, thorough cleaning, acknowledging higher pricing but affirming the work justified the investment.