Services
Air Duct Cleaning, Repair & Sealing in Central Texas
According to the U.S. Department of Energy’s (DOE) Energy Star program, leaky ducts in attics or crawlspaces can account for 20 percent or more of a home's heating and cooling energy losses. In a Central Texas summer, that’s money blown into a 130-degree attic — and comfort your living room never sees.
Overview
What duct service actually is
Your ductwork is the delivery system for every dollar of heating and cooling you buy. Duct service covers four jobs: CLEANING (removing the dust, dander, and construction debris that ride your airflow), SEALING (closing the joints and punctures that leak conditioned air), INSULATING (keeping attic runs from cooking or chilling the air in transit), and REPLACEMENT (when crushed, tangled, or deteriorated flex duct is past saving). Most Leander-area homes we open up need some mix of the middle two.
Signs your Leander-area home has leaky ducts
A few signs you may have leaky or underperforming ducts:
- High utility bills in summer and winter
- Rooms that are difficult to heat and cool
- Stuffy rooms that never seem to feel comfortable
- Ducts routed through the attic, crawlspace, or garage
- Tangled or kinked flexible ducts in your system
- Dust that reappears days after cleaning
What you can do yourself
Run your system and check every duct and joint you can safely reach. You can seal accessible joints with mastic or foil-backed tape — and seal where the duct meets the wall. Actual “duct tape” is NOT recommended for ductwork; any fabric-backed tape deteriorates over time. If you have questions about the right material, call us at 512-528-4258 — we’d rather talk you through a $12 DIY fix than sell you a visit you don’t need.
What takes a professional: testing, sealing, and replacement
Beyond the reachable joints, duct diagnosis is measurement work. One of our certified technicians takes a pressure reading of your duct system and quantifies exactly how much air you’re losing — no guessing. From there we recommend the cheapest fix that solves it: targeted sealing, added insulation so air holds temperature crossing the attic, or — when flex duct is crushed, tangled, or degraded past repair — replacement sized and routed correctly for your system.
When your ductwork can no longer be repaired, or you’re upgrading your HVAC system, replacement ducts are part of doing the job right: ductwork drives both comfort and indoor air quality, and an efficient new system connected to leaking ducts is still an inefficient house.
The failure modes we find in Central Texas attics
The usual suspects: fabric-tape joints that gave up years ago, flex duct crushed under storage decking, disconnected boots blowing conditioned air straight into the attic, and uninsulated runs that deliver 85-degree “cooling” to the far bedroom in July. Each one is invisible from the living space — and measurable in one test visit.
Why homeowners trust MLD with the ductwork
MLD Services is owner-led — Michael Dodge, Leander, since 2009 — licensed TACLA37761C, rated 4.9★ on Google, with flat written pricing approved before work starts, a 100% satisfaction guarantee, and a lifetime workmanship warranty on what we build. Duct recommendations come with the pressure-test numbers attached, so you can see exactly what you’re fixing and why.
Get your ducts tested
Call 512-528-4258 or request service online to schedule a duct test and a flat written plan. Want the background first? Read our Ductwork & Airflow guide, then see how duct condition factors into our free in-home IAQ Score assessment.