Question 1

What is indoor air quality (IAQ) and why does it matter?

Accepted Answer

Indoor air quality refers to the condition of air inside buildings, specifically how it affects occupant health and comfort. The EPA ranks indoor air pollution among the top five environmental health risks because Americans spend approximately 90% of their time indoors. Poor IAQ is linked to allergies, asthma, headaches, fatigue, respiratory infections, and long-term health conditions. In Central Texas, high pollen counts, humidity, and dust make IAQ especially important.

Question 2

What causes poor indoor air quality?

Accepted Answer

Common sources include: dirty HVAC ductwork circulating dust, mold, and allergens; inadequate ventilation trapping stale air; household chemicals and cleaning products releasing VOCs; pet dander and hair; cooking fumes; tobacco smoke; building materials off-gassing formaldehyde; high humidity promoting mold growth; and outdoor pollutants entering through doors, windows, and HVAC intakes. In Central Texas, cedar pollen, agricultural dust, and humidity are major contributors.

Question 3

How can I test my home's air quality?

Accepted Answer

Professional IAQ testing uses calibrated instruments to measure particulate matter (PM2.5/PM10), VOCs, mold spore counts, humidity, carbon monoxide, and carbon dioxide levels. DIY test kits are available for basic mold testing but lack the accuracy and comprehensiveness of professional assessment. We offer full IAQ testing with laboratory analysis and detailed reports with actionable recommendations.

Question 4

How can I improve my indoor air quality?

Accepted Answer

Start with these steps: 1) Schedule professional air duct cleaning to remove accumulated contaminants. 2) Change HVAC filters every 1-3 months with MERV 11+ rated filters. 3) Control humidity between 30-50% using dehumidifiers. 4) Ensure proper ventilation — use exhaust fans in kitchens and bathrooms. 5) Reduce chemical exposure by choosing low-VOC paints and cleaning products. 6) Consider UV sanitization for your HVAC system. 7) Have your home professionally tested to identify specific issues.

Question 5

What MERV rating filter should I use?

Accepted Answer

For most homes, MERV 11-13 offers the best balance of filtration and airflow. MERV 8 is the minimum for basic dust filtration. MERV 11 captures pollen, dust mites, and mold spores. MERV 13 catches bacteria and some virus carriers. Higher ratings (MERV 14-16) provide hospital-grade filtration but may restrict airflow in residential HVAC systems not designed for them. Always check your system's specifications before upgrading.

Question 6

Does air duct cleaning improve indoor air quality?

Accepted Answer

Yes, significantly. NADCA research shows that HVAC systems accumulate 40+ pounds of dust, allergens, and contaminants per year. When your system runs, these pollutants circulate through your home 5-7 times daily. Professional source-removal cleaning eliminates this buildup, resulting in measurably cleaner air. Many homeowners notice less dust on surfaces, fewer allergy symptoms, and better-smelling air within 24-48 hours.

Question 7

What is mold and how does it affect air quality?

Accepted Answer

Mold is a fungus that reproduces by releasing microscopic spores into the air. These spores are a major indoor allergen and can cause allergic reactions, asthma attacks, respiratory infections, and in some cases serious illness from toxic mold species like Stachybotrys (black mold). Central Texas humidity creates ideal conditions for mold growth, especially inside HVAC ductwork, around windows, in bathrooms, and in crawlspaces.

Question 8

What is UV sanitization and does it work?

Accepted Answer

UV-C germicidal lights installed in your HVAC system use ultraviolet radiation to kill bacteria, mold, viruses, and other microorganisms as air passes through. Studies show UV-C systems reduce airborne bacteria by up to 99.9%. They're especially effective when installed near the evaporator coil where moisture promotes microbial growth. UV sanitization works best as part of a comprehensive approach that includes clean ducts and proper filtration.

Question 9

Is Central Texas air quality bad for allergies?

Accepted Answer

Central Texas consistently ranks among the worst regions in the US for seasonal allergies. Mountain cedar (Juniperus ashei) produces massive pollen clouds from December through March. Oak pollen peaks in March-April. Ragweed dominates August-November. Mold spores are year-round due to humidity. Combined with construction dust from rapid development, Bastrop County residents face significant allergy challenges that make indoor air quality management essential.

Question 10

What is carbon monoxide and how do I detect it?

Accepted Answer

Carbon monoxide (CO) is an odorless, colorless gas produced by burning fuels (gas, oil, wood, propane). Sources include furnaces, water heaters, gas stoves, fireplaces, and attached garages. CO poisoning symptoms include headaches, dizziness, nausea, confusion, and can be fatal. Install CO detectors on every level of your home, especially near bedrooms. Have gas appliances, furnaces, and chimneys inspected annually.

Question 11

How does humidity affect indoor air quality?

Accepted Answer

Humidity above 60% promotes mold growth, dust mite reproduction, and bacteria proliferation. Below 30%, air becomes too dry, irritating respiratory passages and allowing more dust to become airborne. The ideal range is 30-50%. In Central Texas, outdoor humidity often exceeds 80%, making proper HVAC dehumidification and ventilation critical. A properly functioning HVAC system should maintain indoor humidity within the optimal range.

Question 12

Are air purifiers worth it?

Accepted Answer

Portable air purifiers with true HEPA filters are effective for individual rooms but don't address contamination in your ductwork — they only clean the air in the room where they're placed. For whole-home solutions, we recommend professional duct cleaning combined with a whole-house HEPA filtration system or UV sanitization installed in your HVAC system. This treats all the air in your home, not just one room.

Indoor Air Quality: Your Questions Answered

Concerned About Your Home's Air Quality?

Related Resources

IAQ Testing Service

Allergy & Asthma Relief

UV Sanitization