Houston has one of the longest and most intense allergy seasons in the United States. Cedar pollen begins in late December, oak and grass pollen dominate spring and early summer, and ragweed peaks in fall. Most Houston allergy sufferers are uncomfortable for the majority of each year.
What most people do not realize is that their HVAC system may be making the problem significantly worse by continuously redistributing accumulated allergens from inside the ductwork into their living spaces.
How Your HVAC System Becomes an Allergen Distribution Network
During peak pollen season, your system cycles dozens of times per day. Each cycle pulls pollen-laden air through return vents, across the evaporator coil, and through the air filter. While the filter captures larger particles, pollen grains smaller than the filter’s rating pass through and settle on interior duct surfaces.
Over the course of a single allergy season, these accumulated pollen layers build up on interior duct surfaces, inside the evaporator coil housing, and in the plenum box. By the time peak season ends, your HVAC system contains a concentrated allergen reservoir that continues to release particles long after the outdoor pollen count has dropped.
Why Indoor Symptoms Persist After Pollen Season
Many Houston allergy sufferers notice their symptoms do not improve proportionally when they stay indoors with windows closed. This happens because the indoor air their HVAC system circulates contains pollen and allergen particles accumulated over preceding weeks that are being redistributed from inside the duct system.
When Cleaning Delivers Maximum Benefit
The ideal time to schedule is early spring, before peak cedar and oak pollen season begins, or immediately after a heavy allergy season to eliminate the accumulated reservoir. Our NADCA-certified service removes allergen deposits from all 8 HVAC components using source removal methods.
Most allergy sufferers report meaningful symptom reduction within the first few days after cleaning, and the improvement persists through the allergy season when filters are replaced on schedule.
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AH-CHOO! Indoor Air Quality serves Houston, Austin, San Antonio, and South Louisiana. NADCA certified. Average job time: 7 hours. 8 components cleaned every service. 38 years of experience.