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Air Duct Articles & Straight Answers

Practical guides written against the documents this trade is measured by — NADCA's ACR standard and EPA indoor-air-quality guidance — not against a sales quota.

Straight Answers

Jun 5, 20268 min read

Does Air Duct Cleaning Actually Work? The Honest Version

The EPA does not recommend it as routine maintenance, and we agree. Here is when duct cleaning genuinely helps, when it does nothing, and how to tell which you're being sold.

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Filtration

Jun 137 min

MERV Ratings Explained — And Why a Higher Number Can Make Things Worse

MERV 13 in a one-inch slot is one of the most common well-intentioned mistakes in a Texas house. What the scale measures, and how to pick against your blower instead of against the box.

Diagnostics

Jun 217 min

One Room Never Cools: Working Through the Causes in Order

It is almost never the thermostat and almost never the air conditioner. The five causes we find, ordered by how often they turn out to be the answer.

Duct Integrity

Jun 297 min

Duct Leakage: The Loss You Pay For Twice

Air escaping into an attic is air you paid to condition. The air replacing it is attic air, and it brings the attic's dust with it. Why sealing usually beats cleaning.

Air Treatment

Jul 56 min

UV Lights in HVAC: What They Actually Do (And What They Don't)

Keeping the coil clean is a real, defensible use of UV. Sterilising the air passing by it is not — contact time does not work that way. Plus why ozone validation matters.

Diagnostics

Jul 136 min

That Musty Smell When the AC Kicks On — Tracking Down the Source

The smell almost always comes from the coil or the drain pan, not the ducts. Working through the likely sources before anyone sells you a sanitising treatment.

New Construction

Jul 196 min

New-Build Dust-Out: Why a Brand-New House Has Dirty Ducts

The duct system is open for months during construction and it collects everything. Why the first year is the right time to deal with it, and what to insist the builder does.

Filtration

Jul 256 min

How Often to Change Your Filter in Texas — And Why the Box Is Wrong

The 90-day number on the packaging assumes a house that isn't yours. Pets, a long cooling season, construction nearby and filter depth all move it. How to set an interval that matches your house.

Last thing

Get it inspected. Get it in writing.

A $99 camera inspection is the cheapest way to find out whether you need us at all — and a real share of them end with “not yet”. Either way you keep the footage.

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