Learn
The basics
Three levers control indoor air: filtration (capturing particles), purification (neutralizing microbes and odors), and ventilation/humidity (fresh air and moisture balance).
- Filtration (MERV / HEPA): A higher MERV captures smaller particles like pollen and dust — but it must be balanced with airflow. HEPA-level filtration targets the finest particles.
- Purification (UV / ionization): UV-C light at the coil reduces mold and microbial growth; ionization can help with odors. These complement — not replace — good filtration.
- Humidity & ventilation: A whole-home dehumidifier controls muggy shoulder-season humidity; an ERV/HRV brings in fresh air without wasting conditioned air.
Compare
Your options
Which air-quality upgrade fits your symptoms and home?
Upgraded media filter
The simplest, highest-value first step for dust and pollen. Captures far more than a 1-inch filter without choking airflow.
UV / purification at the coil
Good for musty smells, mold concerns, and allergy seasons like cedar fever. Works alongside your existing filter.
Dehumidifier or fresh-air ventilation
For homes that feel clammy or stuffy. Targets humidity and stale air the AC alone can't fully manage.
We recommend based on your home and symptoms — not a one-size-fits-all package. Leaky return ducts are a common hidden source of dust worth inspecting first.
Act
Free indoor air quality assessment across Round Rock & Austin
100% woman-owned, licensed, insured, and EPA certified. We'll inspect your filtration and ductwork and recommend only what your home actually needs.
- Why is my home so dusty even though I change the filter?
- Leaky return ducts often pull attic dust into the system. Duct sealing, cleaning, or upgraded filtration can make a dramatic difference — we can inspect and show you.
- Do air purifiers and UV lights help with allergies?
- For Central Texas allergy seasons — cedar fever especially — whole-home filtration and purification can genuinely help. We match options to your home and symptoms.
- How often should ducts be cleaned?
- There's no fixed schedule — it depends on pets, renovations, and duct condition. We'll tell you honestly whether cleaning is needed.
Educational only — not a substitute for an on-site evaluation. Recommendations depend on your home, equipment, and local code, which change over time; confirm specifics with a licensed professional. Reviewed by the Holman Comfort Systems team · Last updated June 18, 2026.