Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Trusted Air Duct Repair for Union City Homeowners
Air duct repair in Union City, CA typically costs $350 to $1,200 depending on the extent of damage, and most repairs can be completed in a single visit. That’s the honest range we work with when homeowners in Union City call us about disconnected runs, crushed flex duct, or seams that have split open in the crawlspace. Nelson Abreu runs home repair work at Duct Cleaning Union City, and he’ll tell you the same thing: leaks don’t fix themselves, and every month they go unaddressed you’re paying to heat or cool the attic. Call (877) 824-3121 and we’ll find the failure, show you what we found, and quote one flat price per system before any work begins.
HVAC Duct Installation
HVAC Duct Installation is the process of designing and installing a complete duct system for a new build, an addition, or a gut renovation where the old runs no longer match the new floor plan. In Union City’s older housing stock, we often see installations done decades ago with undersized returns or flex duct that’s simply collapsed under its own weight. Duct Cleaning Union City handles HVAC Duct Installation with the same Rotobrush and Nikro equipment we use on every job, because a properly installed system is one that can actually be cleaned and maintained for decades.
New Construction and Additions
When a Union City homeowner adds a bedroom or ADU, the existing trunk line rarely has the capacity to serve it. We size the new runs correctly and connect them to the existing system without choking airflow to the rest of the house.
Whole-System Replacement
If the existing ductwork in a 1960s-era Union City home is original, replacement almost always beats patching. We replace entire systems with sealed, insulated, properly supported runs that meet current building code.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Air Duct Replacement
Air Duct Replacement means removing damaged, contaminated, or outdated duct runs and installing new ones that seal properly and move air efficiently. We recommend it when repair would amount to chasing one leak after another, or when ductwork has been soaked by a roof leak, rodent-infested, or burned through by an old furnace. Duct Cleaning Union City performs Air Duct Replacement as a natural extension of our cleaning work, because we’re already inside the system and can see exactly what needs to go.
After Roof Leaks and Water Damage
Insulated flex duct that’s been wet will never dry out properly inside the jacket. Mold and compressed insulation reduce airflow and become a permanent air quality problem, so we replace the affected runs rather than try to dry them.
Mold and Rodent Damage
Rodent activity in Union City crawlspaces and attics is common in older homes, just as it is for our Air Duct Repair in Cherryland customers. When ductwork has been chewed through or filled with nesting material, full replacement of the damaged sections is the only way to restore safe airflow.
Ductwork Repair
Ductwork Repair is the targeted fix for specific failures: a disconnected boot, a split seam, a crushed flex run, or a register that’s no longer attached to the trunk line. Duct Cleaning Union City finds these during routine Air Duct Repair in Redwood City service calls and can fix most of them the same day. If we’re already in your attic with tools and replacement materials, repairing a discovered leak is usually faster and cheaper than scheduling a second visit.
Sealing Leaks and Gaps
A 10% leak in a duct system translates directly to a 10% waste of conditioned air. We use mastic and metal-backed tape to seal seams the right way, not the duct-tape fixes that peel off after one heating season.
Reattaching Disconnected Runs
Flex duct that’s pulled loose from a branch fitting dumps heated or cooled air into the attic, and Air Duct Repair – Fairview homes face the same issue. In Union City’s summer heat, that loss is expensive, and the fix usually takes less than an hour per run.
Duct Replacement
Duct Replacement differs from repair in scale: we’re removing entire trunks, branches, or a complete plenum rather than fixing a single failure point. It’s the right call when the existing system is too small, too deteriorated, or too poorly designed to be worth salvaging. Duct Cleaning Union City handles duct replacement as a focused service, not a sideline, which means your system gets replaced by the same technicians who understand how ducts should perform.
Older Homes With Original Ductwork
Union City neighborhoods like Decoto and Alvarado were built mostly between the 1950s and 1970s. The original metal ductwork in those homes is often rusted, undersized, and leaking at every joint, and replacement delivers better comfort than any amount of patching.
When Repairs Add Up
Three separate failures in one season is a pattern, not a coincidence. We’ll show you what we’re seeing and let you decide whether another repair makes sense or whether replacement is the more honest investment.
Ductwork Installation
Ductwork Installation is the complete scope of work: sizing, layout, fabrication, hanging, sealing, insulating, and testing a new duct system so it delivers the right CFM to every room. It’s the foundation of any forced-air HVAC system. Duct Cleaning Union City brings professional-grade Rotobrush and Nikro equipment to every job, which matters as much during installation as it does during cleaning, because the tools let us verify airflow before we leave your Union City home.
Proper Sizing and Airflow Balancing
Most comfort complaints trace back to ducts that were never sized for the rooms they serve. We calculate the required airflow per room and install ductwork that actually hits those numbers.
Code-Compliant Sealing and Support
Union City building inspections look at duct support spacing and seal quality. We install to current California Energy Code standards, with mastic-sealed joints and insulated trunks where the code requires it.
Brands We Service
We work with Honeywell air quality systems regularly in Union City homes. Honeywell’s media air cleaners and humidity controls only perform as well as the ducts feeding them, and we’re experienced at integrating those components with repaired or replaced ductwork so the whole system works together.
Aprilaire whole-home humidifiers and ventilation controls are another common brand we see in the area. When we fix or replace ducts that serve an Aprilaire system, we make sure the airflow changes don’t undermine the air quality equipment you’ve already invested in. Whether you have Honeywell, Aprilaire, or any other make, we can service the ductwork around it without a second contractor.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Rooms that never feel comfortable. If one bedroom is always ten degrees hotter than the rest of the house, a disconnected or kinked duct run is the likely culprit. The fix costs far less than months of wasted cooling.
- Dust returns within days of cleaning. Loose duct connections pull attic and crawlspace air into your home. What you’re seeing on furniture is unfiltered air from spaces you wouldn’t want to breathe from directly.
- Utility bills climbing without a clear reason. When the AC runs longer to hit the same temperature, the duct system is usually leaking conditioned air before it reaches a single register. Sealing those leaks pays for itself quickly.
- Rattling or banging when the blower starts or stops. Duct runs that aren’t properly supported will move under pressure changes. That movement eventually pulls joints apart and makes the problem worse than the noise.
- Visible damage in the attic or crawlspace. If you see crushed flex duct, hanging insulation, or metal runs with rust holes, don’t wait. These failures are visible because they’re already costing you money and air quality.
Our Process, Step by Step
- 1
Inspection. We start by walking the system from the air handler to every register, checking connections, supports, and visible runs. In Union City homes, we pay close attention to crawlspace ducting, which takes the most abuse from moisture and pests.
- 2
Airflow and leakage testing. We measure static pressure and check airflow at each register to identify restrictions that aren’t visible from the outside. This step often finds problems that visual inspection misses.
- 3
Findings and a flat quote. Nelson Abreu reviews what we found with you, shows you the failed sections, and quotes one price per system before any work begins. No per-vent pricing, no surprise line items after the van is parked.
- 4
Repair or replacement. We complete the agreed work using sealed connections, proper supports, and insulated runs where the application calls for it. Most repairs are finished in one visit.
- 5
Post-repair verification. After the fix, we re-test airflow and confirm the system is performing as expected. We’ll leave you with before-and-after photos of the work so you can see exactly what changed.
How Much Does Air Duct Repair Cost in Union City?
A typical air duct repair in Union City runs $350 to $700 for a single failure like a disconnected run or split seam. More extensive work, like replacing several damaged flex runs or resealing an entire trunk line, lands between $700 and $1,200. Full duct replacement or Air Duct Repair in Menlo Park scale projects in larger homes can exceed that range, but we quote the full scope before any work starts. What affects the price most is access: attic work with a clear walkway costs less than crawlspace jobs in tight Union City foundations. The age of the house matters too, because older systems often reveal additional damage once we open things up. To avoid overpaying, get a flat per-system price rather than a per-hour or per-vent number. Our free estimate includes a full inspection, airflow testing, and a written quote for the exact work we agree to, with no obligation. Call (877) 824-3121 to schedule one.
Our Service Area Near Union City
Duct Cleaning Union City serves Union City and the surrounding communities including Foster City, San Lorenzo, East Palo Alto, Alviso, Ashland, Cherryland, Stanford, Fairview, and North Fair Oaks. If you’re researching Air Duct Repair in Redwood City or nearby areas, we’re familiar with the housing stock and common duct failures in each. Most appointments can be scheduled within a few business days, and we’ll confirm a specific window before we arrive.
Serving Union City, CA – Our Local Coverage Area
We’re based in the Union City area and know this community well. Use the map below to see our service coverage – if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Air Duct Repair in Union City
Air Duct Repair in Union City is the process of fixing specific failures in a home’s duct system, including disconnected runs, split seams, crushed flex ducts, and leaking joints. Most Union City homes have some degree of duct leakage, and repair restores the system’s ability to deliver conditioned air to the rooms it serves. It’s distinct from cleaning and from full replacement, though the three services often overlap when a cleaning reveals damage. Call (877) 824-3121 for an assessment and a flat quote.
Most single-failure repairs take 1 to 3 hours from inspection to final verification. When multiple runs need attention or full duct replacement is required, the job may span a full day or occasionally two. We’ll give you a time estimate before work begins and confirm it with you before anything changes.
San Lorenzo Air Duct Repair pricing is similar: typically $350 to $700 for a single failure, and $700 to $1,200 for more extensive work like multiple run replacements or full trunk line resealing. Access difficulty, home age, and material type all affect the final number. We quote one flat price per system after inspection, so the estimate you get is the price you pay. Call (877) 824-3121 for a free, no-obligation estimate.
Yes, we work regularly with Honeywell and Aprilaire air quality equipment in Union City homes. We understand how these systems interact with duct airflow, and we make sure our repairs don’t undermine the performance of the air quality equipment you already have. Whether your system uses Honeywell, Aprilaire, or another brand, we can service the ductwork around it.
We prioritize urgent repairs, especially when a duct failure is dumping conditioned air into an attic or crawlspace during Union City’s summer heat. Most non-emergency repairs can be scheduled within a few business days. Call (877) 824-3121 and we’ll let you know how soon we can get a technician to your home.
We stand behind our repair work and will correct any failure in a repaired or replaced section that stems from our workmanship. Material failures are covered by the manufacturer’s warranty where applicable. Exact terms depend on the scope of work, and we’ll outline them in writing before you approve anything.
Clear a path to the attic access or crawlspace entrance, and move anything stored near the air handler if possible. Keep pets in a separate room while we work. We’ll handle moving insulation and accessing the duct runs, and we’ll leave the work area as clean as we found it.
Schedule Your Air Duct Repair Service in Union City Today
If your ducts are leaking, disconnected, or damaged, the sooner they’re fixed, the sooner your system stops wasting money. Call (877) 824-3121 and we’ll inspect your Union City ductwork, show you what we find, and quote one flat price per system before any work begins. There’s no obligation, and the estimate is free.
Written by Nelson Abreu, Owner at Duct Cleaning Union City, serving Union City and surrounding communities.