What Ventilation & Air Quality technicians do
IAQ and ventilation contractors are certified professionals who measure and correct air quality conditions inside a building—from particulate load in return ducts to CO₂ concentration in occupied zones. Their assessment begins with duct static pressure testing to identify restriction points, followed by airflow balancing at supply and return registers. Specialists evaluate existing filtration efficiency against the MERV rating required for the allergen or chemical load in the space, then design upgrades using HEPA-rated air handlers, ERV/HRV units for controlled fresh-air exchange, and VOC or particulate sensors to establish pre- and post-installation benchmarks.
Key terms: MERV filter · HEPA filtration · ERV · VOC sensors · duct static pressure
Service scope and common projects
Duct cleaning and sealing
HEPA and MERV-rated filtration upgrades
ERV/HRV installation and balancing
Humidity control with dehumidifiers
CO₂, VOC, and particulate monitoring
How much does ventilation & air quality cost in the USA?
| Service | Typical range | Notes |
|---|---|---|
| Duct cleaning | $300 – $700 | Pricing varies by labor rates, equipment, and permits. |
| IAQ assessment | $150 – $400 | Pricing varies by labor rates, equipment, and permits. |
| Whole-home filtration | $500 – $2,500 | Pricing varies by labor rates, equipment, and permits. |
Prices reflect national ranges. Select a state below for localized availability.