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SouTex Energy Solutions

SouTex Service · NationwideServicio SouTex · Nacional

A/C Duct SealingSellado de Ductos

Stop air leaks where they cost you most. We seal duct gaps to improve HVAC efficiency and slash energy bills.Stop air leaks where they cost you most. We seal duct gaps to improve HVAC efficiency and slash energy bills.

Call 956-215-1188Llama 956-215-1188Apply NowAplicar Ahora
A/C Duct Sealing installation by SouTex Energy Solutions
Why it mattersPor qué importa

Over time, ducts develop leaks and gaps that bleed conditioned air into your attic.Over time, ducts develop leaks and gaps that bleed conditioned air into your attic.

Over time, ducts develop leaks and gaps that bleed conditioned air into your attic. We diagnose every joint, seal it with high-performance mastic, and verify airflow so your HVAC system works less while cooling and heating more.Over time, ducts develop leaks and gaps that bleed conditioned air into your attic. We diagnose every joint, seal it with high-performance mastic, and verify airflow so your HVAC system works less while cooling and heating more.

  • Up to 30% reduction in HVAC energy wasteUp to 30% reduction in HVAC energy waste
  • More even room-to-room temperaturesMore even room-to-room temperatures
  • Longer equipment lifespanLonger equipment lifespan
  • Cleaner indoor air qualityCleaner indoor air quality
The ProcessEl Proceso

What to expectQué Esperar

Four clean steps, with no surprises and no shortcuts, from the first knock at your door to the final walkthrough.Cuatro pasos claros, sin sorpresas ni atajos, desde el primer toque en tu puerta hasta la revisión final.

  1. 01

    Free AssessmentFree Assessment

    We inspect every accessible duct joint, register, and return to find leaks.We inspect every accessible duct joint, register, and return to find leaks.

  2. 02

    Pressure TestPressure Test

    We measure existing duct leakage with calibrated equipment for a true baseline.We measure existing duct leakage with calibrated equipment for a true baseline.

  3. 03

    Professional SealingProfessional Sealing

    High-performance mastic and tape applied at every leak point. No shortcuts.High-performance mastic and tape applied at every leak point. No shortcuts.

  4. 04

    VerificationVerification

    Re-test the system, then walk you through your before/after numbers.Re-test the system, then walk you through your before/after numbers.

Real Homes. Real Results.Hogares Reales. Resultados Reales.

See the difference.Mira la diferencia.

Side-by-side from one of our recent a/c duct sealing projects.Lado a lado de uno de nuestros proyectos recientes de sellado de ductos.

Before A/C Duct Sealing install

BeforeAntes

After A/C Duct Sealing install

AfterDespués

FAQsPreguntas

Common questions.Preguntas comunes.

Still have questions about a/c duct sealing? Our bilingual team is one call away.¿Aún tienes preguntas sobre sellado de ductos? Nuestro equipo bilingüe está a una llamada de distancia.

Contact UsContáctanos
01.How much can duct sealing actually save me?How much can duct sealing actually save me?+
The average home loses 20–30% of conditioned air through duct leaks. Properly sealing them often cuts your HVAC's runtime, and your electric bill, by a similar margin.The average home loses 20–30% of conditioned air through duct leaks. Properly sealing them often cuts your HVAC's runtime, and your electric bill, by a similar margin.
02.Will I be without A/C during the work?Will I be without A/C during the work?+
Most full duct seals take 3–4 hours and don't require extended system downtime. We work around your schedule.Most full duct seals take 3–4 hours and don't require extended system downtime. We work around your schedule.
03.Is duct sealing included in the no-cost program?Is duct sealing included in the no-cost program?+
Yes. For qualifying households, duct sealing is one of the core services we provide at zero cost.Yes. For qualifying households, duct sealing is one of the core services we provide at zero cost.
04.Do you offer service in Spanish?Do you offer service in Spanish?+
¡Sí! Our entire team is bilingual. Every step, from assessment to walkthrough, is available in English or Spanish.¡Sí! Our entire team is bilingual. Every step, from assessment to walkthrough, is available in English or Spanish.
See us in actionMíranos en acción

Watch a SouTex duct seal in real time.Mira un sellado de ductos de SouTex en tiempo real.

Areas We SealÁreas Que Sellamos

Five places every leak hides.Cinco lugares donde se esconde cada fuga.

Industry standards from InterNACHI® and NADCA define the high-impact points in any HVAC duct system. We seal every one of them with mastic or UL-181 approved tape.Los estándares de la industria de InterNACHI® y NADCA definen los puntos de mayor impacto en cualquier sistema de ductos HVAC. Los sellamos todos con mastic o cinta aprobada UL-181.

  1. 01

    HVAC Equipment CabinetsGabinetes del Equipo HVAC

    Furnace and air handler cabinet seams, knockouts, and slots. The high-pressure junction between the furnace and the evaporator coil is a top leak source — we seal it with mastic or UL-181 approved foil tape.Costuras del gabinete de la caldera y la manejadora, perforaciones y ranuras. La unión de alta presión entre la caldera y la bobina del evaporador es una fuente común de fugas — la sellamos con mastic o cinta de aluminio aprobada UL-181.

  2. 02

    Duct Connections & BootsConexiones y Boots de Ductos

    Where ducts connect to walls, ceilings, or floors. We seal each duct boot to the drywall with mastic or foil-backed HVAC tape so no conditioned air escapes into the framing cavity.Donde los ductos se conectan con paredes, techos o pisos. Sellamos cada boot del ducto con el drywall usando mastic o cinta HVAC con respaldo de aluminio para que el aire acondicionado no se escape al armazón.

  3. 03

    Supply & Return RegistersRejillas de Suministro y Retorno

    Conditioned air should only exit at supply registers and unconditioned air should only enter at return grilles. Any gap where the register frame meets walls, floors, or ceilings is sealed flush.El aire acondicionado solo debe salir por las rejillas de suministro y el aire no acondicionado solo debe entrar por las rejillas de retorno. Cualquier hueco donde el marco de la rejilla se une con paredes, pisos o techos se sella al ras.

  4. 04

    Duct Joints & SeamsJuntas y Costuras de Ductos

    Every seam between metal duct sections gets mastic or approved tape. Transitions between metal and flex duct are sealed with compatible materials to keep airflow tight.Cada costura entre secciones de ducto metálico recibe mastic o cinta aprobada. Las transiciones entre ducto metálico y flexible se sellan con materiales compatibles para mantener el flujo de aire hermético.

  5. 05

    Access Panels & Service OpeningsPaneles de Acceso y Aberturas de Servicio

    Maintenance panels, service knockouts, and access openings are sealed the same way as the rest of the system. No shortcuts on hidden surfaces.Los paneles de mantenimiento, perforaciones de servicio y aberturas de acceso se sellan igual que el resto del sistema. Sin atajos en superficies ocultas.

Testing & VerificationPruebas y Verificación

We measure every leak.Medimos cada fuga.

Before and after every duct sealing job, we use a calibrated Duct Blaster to measure exactly how much air your ducts are leaking. You see the numbers, we close the gap, and we re-test to verify the result.Antes y después de cada sellado de ductos, usamos un Duct Blaster calibrado para medir exactamente cuánto aire se está fugando. Tú ves los números, cerramos la brecha y volvemos a probar para verificar el resultado.

Duct blaster fan and DG-700 pressure gauge set up in a hallway for a duct leak test
Duct blaster connected to a wall register with painter's tape during a duct leakage test
Duct blaster sealed to a floor register with pressure gauge displaying live readings
Live pressure gauge reading during an A/C duct blaster verification test
Tall flex duct rising from the duct blaster fan to a ceiling supply register
Real JobsTrabajos Reales

Sealed by SouTex.Sellado por SouTex.

Silver flex ducts with red mastic sealing the joints
Sheet metal duct sealed with foil tape in an attic
Wide attic shot showing a fully sealed duct system
Sheet-metal plenum with three flex ducts joined and freshly sealed with white mastic
Gap around an A/C ceiling vent register marked for sealing
SouTex Energy Solutions service vehicle at a customer home

Ready to save?¿Listo para ahorrar?

Ready to start saving?¿Listo para empezar a ahorrar?

Apply in 60 seconds. Our bilingual team confirms eligibility and schedules a free home assessment, at zero cost to you.Aplica en 60 segundos. Nuestro equipo bilingüe confirma tu elegibilidad y programa una evaluación gratuita de tu hogar, sin costo para ti.

Apply NowAplicar Ahora956-215-1188