Ductwork in San Marcos, TX. Free, no-pressure estimates.
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When you call about ductwork, you are likely dealing with rooms that never feel comfortable, high energy bills, or dust that keeps coming back no matter how often you clean. Your duct system is the network that carries conditioned air from your HVAC unit to each room, and when it is leaky, crushed, or undersized, the system has to run longer and harder to compensate.
We start by running a pressure test or using a smoke pencil to find leaks and disconnections. We seal every gap with mastic paste or UL-181-rated metal tape, never standard duct tape. We reattach separated sections with sheet metal screws and foil tape, then wrap ducts in unconditioned spaces with R-6 or R-8 insulation. Finally, we test airflow at the registers to confirm the fix.
The biggest cost factors are accessibility and the extent of the damage. Ducts in a tight attic or a low crawl space take longer to reach and repair. A system with crushed flex duct or collapsed metal runs may need sections replaced, which adds material and labor. The age of the ductwork and whether it was originally sized correctly also affect the scope of work.
On the day of the job, our crew sets up drop cloths and shoe covers to protect your floors and furniture. We work in the attic, crawl space, or basement and clean up all debris, old tape, and insulation scraps before we leave. You do not need to move furniture or clear the attic; just make sure the area around the indoor unit is accessible.
Mastic is a thick paste that dries into a flexible, permanent seal. Foil-backed UL-181 tape is rated for ductwork and holds up to temperature changes.
High static pressure from undersized or blocked ducts forces the blower to work harder, reducing airflow and shortening equipment life.
We check every accessible duct run for leaks, disconnections, crushing, and insulation gaps. A pressure test or visual smoke test pinpoints the problem areas.
We apply mastic over all joints and seams, and use metal tape on connections. Disconnected sections are screwed back together and sealed.
Ducts in unconditioned spaces get wrapped in fiberglass insulation with a vapor barrier. We secure the insulation with wire or zip ties.
We turn the system on and check airflow at each register. We also measure temperature split and static pressure to verify the repair is working.
Using mastic and metal tape instead of standard duct tape means the seal stays tight for years. A proper seal stops air loss and keeps dust from being pulled into the system.
Getting the duct sizing and routing right ensures each room gets the air it needs. That stops hot and cold spots and reduces strain on your HVAC blower.
A duct system that is sealed and insulated correctly lets your furnace and AC run shorter cycles. Less run time means less wear on the compressor and heat exchanger.
Call us or fill out the form below and we will get back to you quickly. We offer free estimates on all new installations and major repairs.