Texas's Environmental Experts
Cleaner air. Better environment.
What's in your HVAC system gets circulated through every room in your building. DFX cleans your air returns, replaces your filters with hospital-grade antimicrobial-treated replacements, and treats the system with disinfectant — so the air your people breathe is part of a maintained, documented environment.
Problem? Solved. DFX‑Done.
Looking for residential service? See residential pest control →The DFX air quality process
Three steps — clean, replace, and treat — that address what your HVAC system is circulating through your building every day.
Clean
Air returns are physically cleaned and dusted — removing buildup that your HVAC circulates through the building every time the system runs.
Learn more about CleanReplace
Air filters replaced with hospital-grade, antimicrobial-treated replacements that do more than catch dust.
Learn more about ReplaceTreat
DFX disinfectant is applied to the new filters and sprayed through the air returns, so the system itself is part of the disinfection process.
Learn more about TreatHow commercial service works
A documented process built around your facility's needs.
Clean
Air returns are physically cleaned and dusted. Dust, debris, and buildup in the returns get circulated through your building every time the HVAC runs — cleaning them removes that source before anything else happens.
Replace
Air filters are replaced with hospital-grade, antimicrobial-treated filters. These do more than catch particulates — the antimicrobial treatment provides an additional layer of protection as air passes through.
Treat
DFX disinfectant is applied to the new filters and sprayed through the air returns and into the system. The system is then run so the disinfectant is distributed through the airflow. The result is a HVAC system that's been cleaned, re-filtered, and treated — not just a filter swap.
Why commercial operators choose DFX
More than a filter swap
A filter change leaves the returns dirty and the system untreated. DFX cleans, replaces, and treats — the full process.
Hospital-grade materials
Antimicrobial-treated replacement filters and EPA-approved disinfectant — the same standard DFX applies across all its environmental services.
Part of a whole-environment plan
Air quality is one piece of a healthy commercial environment. Pair it with DFX disinfection for a complete surface and air approach.
Documented service
Service records on file, consistent with DFX's documented commercial approach — so you always have a paper trail.
Service areas
Commercial pest management across Texas.
San Antonio
Commercial air quality service for offices, restaurants, healthcare, and facilities across Bexar County.
View San Antonio servicesAustin
Air quality service for Travis, Williamson, and Hays county businesses.
View Austin servicesHouston
Harris, Fort Bend, and Montgomery county commercial air quality coverage.
View Houston servicesDallas
Established Dallas commercial customers continue to receive full service.
View Dallas servicesFrequently asked questions
Service areas
More from DFX
One company. Three environmental services.
Pest control, disinfection, and air quality — handled by the same team, on one call.
Ready to get started?
Our team is standing by to assess your situation and create a customized treatment plan. No obligation, just expert advice.