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Leander, TX • Serving Central Texas License TACLB127781E
Indoor Air Quality · Leander, TX

Indoor Air Quality Leander TX Homes Breathe Better

Allergies acting up? Dust on every surface no matter how often you clean? Indoor Air Quality Leander TX projects from DMO Mechanical address the source — filtration, ventilation, humidity, and contaminants — not just symptoms. Licensed Texas HVAC contractor, real diagnostics, no scare tactics.

Get an IAQ Assessment (512) 608-7533
Texas License TACLB127781E Same-week assessments typical EPA-aligned recommendations
Why It Matters Here

Why IAQ Matters More in Central Texas

Cedar fever, year-round pollen, summers that keep AC running 18+ hours a day, and homes built sealed tight for energy efficiency. Central Texas is a perfect storm for indoor air problems — and most homeowners don't realize their HVAC system can fix the majority of them.

90%
of time the average American spends indoors, per the EPA. Indoor air can be 2–5× more polluted than outdoor air.
1

Cedar & oak season are brutal

Mountain cedar pollen peaks in December–February. Oak follows in spring. If your filter is the cheap fiberglass kind, it's not catching cedar pollen. A MERV 11 or higher pleated filter handles it without choking your system.

2

Long AC runtime = more chances to filter

Texas summers run AC nearly nonstop. That's an opportunity — every hour your air handler runs, it's pulling air through whatever filtration you have. Better filtration during long runtimes adds up fast.

3

Humidity swings cause mold

Drop a 70°F set point in 90% humidity weather and condensate forms in places it shouldn't — drain pans, evaporator coils, sometimes ductwork. UV lights and proper drainage stop biological growth before it spreads.

4

New homes are sealed tight

Modern construction in Leander, Cedar Park, and Round Rock is built for energy efficiency — which means less natural air leakage. Without intentional fresh air ventilation, CO₂ and VOC levels climb indoors. An ERV adds fresh air without killing your energy bill.

5

Construction dust lingers

If your home is under 5 years old, drywall and construction dust may still be in the ductwork. We see this constantly across Liberty Hill and Georgetown subdivisions. Duct cleaning makes a real difference.

Common Issues

Common Air Quality Problems We Solve

If any of these sound familiar, there's a real fix for it. Most of these are HVAC-side issues — even when they don't seem like it.

Problem

"Allergies are constant — even with windows shut."

Likely Fix

Filter upgrade. Most homes ship with the cheapest fiberglass filter. Stepping up to a MERV 11 or 13 pleated filter catches pollen, pet dander, and fine dust. We'll check that your air handler can actually handle the higher MERV rating without restricting airflow.

Problem

"Dust on every surface no matter how often I clean."

Likely Fix

Could be leaky ductwork pulling attic dust into the system, or filtration not catching what's circulating. We do a duct inspection, check return-side seals, and recommend the right filter media. Sometimes routine maintenance is all it takes.

Problem

"Musty smell when AC kicks on."

Likely Fix

Biological growth on the evaporator coil or in the drain pan. Common in Central Texas humidity. A coil cleaning plus a properly placed UV light kills the growth and prevents return. We don't UV-light every system — only when there's a real problem to solve.

Problem

"Some rooms are humid, others dry."

Likely Fix

Humidity imbalance is usually a duct or sizing issue. An oversized AC short-cycles and doesn't run long enough to dehumidify. A whole-home dehumidifier solves it for the whole house at once. We measure first to confirm what's actually wrong.

Problem

"House feels stuffy, especially in winter."

Likely Fix

Lack of fresh air ventilation. Newer homes are sealed so tight, nothing exchanges. An ERV (energy recovery ventilator) brings in fresh outdoor air while recapturing the energy from the air leaving — small bill impact, big air quality difference.

Problem

"New construction smells like construction."

Likely Fix

Drywall dust and VOCs from new materials. A real duct cleaning (not the $99 Groupon kind) plus 30–60 days of high-quality filtration usually clears it up. Carbon-blend filters help with the off-gassing smell specifically.

What does an indoor air quality assessment actually cover?
A real assessment looks at filtration (what's installed and whether it's working), humidity (measured at multiple points), ductwork condition (leaks, dust loading), drain pan and coil cleanliness, and ventilation rate. We'll walk through what we find with you, plain English, and only recommend fixes that match what's actually wrong.
Will a UV light really help with allergies?
Honestly — for pollen allergies specifically, no. UV lights kill biological growth (mold, bacteria, viruses) at the air handler, which helps with musty smells and prevents coil contamination. For pollen and dust allergies, filtration is the answer, not UV. Anyone selling you UV as an allergy fix is overstating the case.
What MERV rating should I use?
For most Central Texas homes, MERV 11 is the sweet spot — catches pollen, pet dander, fine dust without choking your air handler. MERV 13 is better at allergens but only works if your system is sized for it. Going to MERV 16 or HEPA usually requires a media cabinet upgrade — we'll tell you whether it makes sense for your setup.
Do I need duct cleaning?
Most homes don't, and the EPA agrees — duct cleaning isn't routinely needed. But there are specific cases where it does help: visible mold growth, recent renovations or new construction, vermin contamination, or a fire/smoke event. If we look and the ducts are basically clean, we'll tell you. Don't fall for the $99 "duct cleaning" specials — those are usually loss leaders for upsells.
How long does an IAQ project take?
Depends on the scope. A filter upgrade and assessment is an hour. Adding a UV light or whole-home dehumidifier is half a day. Full duct cleaning plus IAQ install is typically a full day. We'll tell you the timeline before we start so you can plan around it.
Is air purification covered by warranty?
Equipment we install carries the manufacturer's warranty — typically 5–10 years on UV lights, dehumidifiers, and media cabinets. We back our installation work for one year. Bring us the warranty paperwork and we'll honor manufacturer terms for replacement parts during the coverage period.
Ready When You Are

Ready to Breathe Easier?

No high-pressure sales, no scare tactics — just a real assessment, plain explanations, and recommendations that actually fit your home. Licensed Texas HVAC contractor, family-run, locally based in Leander.

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Direct Line
(512) 608-7533

Mon–Fri 8am–6pm CST
Same-week IAQ assessments typical