Oakland's Premier Air Duct Repair & Replacement
Your home’s air ducts deliver heated and cooled air to every room. When ducts leak, tear, or collapse, you waste 20-30% of your heating and cooling energy through holes and gaps, according to the EPA. That wasted energy shows up as higher utility bills, uneven temperatures between rooms, and dusty air throughout your home.
We fix leaking ducts, replace damaged sections, and seal connections so your HVAC system works the way it’s supposed to. We’ve been repairing and replacing air ducts in Oakland and the East Bay since 2010.
Call us at (510) 500-5007 for a free estimate. We’ll inspect your ductwork, explain what needs fixing, and give you a straightforward price. No upselling, no surprises.
Signs Your Air Ducts Need Repair
Uneven Temperatures
One bedroom stays cold while the living room overheats, even though your thermostat is set to the same temperature throughout. This usually means a disconnected duct or large leak preventing airflow to specific rooms.
Higher Energy Bills
Your heating or cooling costs climb 20-30% compared to previous years, but your usage habits haven’t changed. Leaking ducts force your HVAC system to run longer to maintain temperature.
Dusty Air and Surfaces
Dust accumulates on furniture within days of cleaning. Leaking return ducts pull dusty attic air into your home instead of recirculating indoor air.
Visible Damage in Attic or Crawlspace
During insulation services or rodent inspections, we often find torn flex duct, disconnected joints, or ductwork crushed by stored items.
Weak Airflow from Vents
Air barely comes out of certain vents, or you hear whistling sounds near supply registers. These symptoms point to kinked ducts or collapsed sections.
Rodent Damage
Rats and mice chew through flex duct insulation and create holes in sheet metal. If you’ve had rodent problems in your attic, your ducts likely need inspection and repair.
Air Duct Repair vs. Replacement:
What You Actually Need
Not every duct problem requires complete replacement. Here’s how we decide:
When Repair Works
Small holes and gaps (less than 2 inches): We seal these with mastic sealant or metal-backed tape. Mastic is a thick paste that hardens into an airtight seal. It lasts decades longer than standard duct tape, which dries out and fails within months.
Disconnected joints: Ducts sometimes pull apart at connections, especially in attics where temperature swings cause expansion and contraction. We reconnect the sections and seal the joint properly.
Minor tears in flex duct: Small tears in the outer vapor barrier can be patched if the inner liner and insulation are intact.
Loose connections at registers: Supply and return vents sometimes separate from ductwork. We reattach and seal the connection to stop air leaks.
When Replacement Makes Sense
Large tears or holes (more than 2 inches): Extensive damage compromises the duct’s structural integrity. Patching creates more problems than replacing the section.
Crushed or kinked flex duct: Once flex duct loses its shape, airflow drops permanently. We replace the damaged section with new properly-supported duct.
Uninsulated ducts in unconditioned attics: Older homes often have uninsulated sheet metal ducts. Replacing these with insulated flex duct stops condensation and heat loss.
Extensive rodent damage: If rats have chewed through multiple sections, torn insulation, or left contamination throughout the system, replacement costs less than repairing every damaged spot.
Undersized ductwork: Some homes have ducts too small for the HVAC system, creating high energy bills and poor performance. We resize and replace to match your system’s requirements.
Asbestos-wrapped ducts: Homes built before 1980 sometimes have asbestos insulation on sheet metal ducts. We handle abatement and replacement following all safety regulations.
During your free inspection, we’ll show you the damaged areas and explain whether repair or replacement makes financial sense for your situation
Our Air Duct Repair & Replacement Process
We’ve repaired and replaced ductwork in hundreds of East Bay homes. Here’s what happens:
We start in your attic or crawl space with flashlights and inspection equipment. We trace every supply and return duct from your HVAC unit to each register. We check for:
- Disconnected joints
- Holes, tears, and gaps
- Crushed or kinked sections
- Missing or damaged insulation
- Rodent damage and contamination
- Incorrect sizing for your system
We take photos of problem areas so you can see what we’re looking at.
We come back inside and show you the photos. We explain what’s wrong, what it’s costing you in wasted energy, and what we recommend. You get options: repair vs. replace, timeline, and exact pricing. No pressure, no upselling.
For repairs: We seal holes and gaps with professional-grade mastic sealant and metal-backed foil tape (not hardware store duct tape, which fails quickly). We reconnect separated joints and secure them properly. We test airflow before and after to verify the fix worked.
For replacement: We remove damaged sections and install new insulated flex duct or rigid sheet metal duct, depending on your system and budget. We support flex duct every 4-5 feet to prevent sagging and kinking. We seal all connections with mastic. If you need full duct replacement, we coordinate with our insulation services team to minimize disruption.
After repairs or replacement, we test your system: - Turn on HVAC and check airflow at every register - Verify even air distribution between rooms - Listen for air leaks or whistling sounds - Measure temperature at supply vents to confirm proper delivery
We vacuum any dust or debris from the work area. If we worked in your attic, we leave it cleaner than we found it. We dispose of all old ductwork and materials properly.
You get a detailed summary of work completed and recommendations for maintaining your system.
Benefits of Properly Sealed
& Insulated Air Ducts
Lower energy bills: Sealing duct leaks recovers the 20-30% of heated and cooled air currently escaping into your attic or crawl space. Most customers see the difference on their next utility bill.
Consistent temperatures throughout your home: When ducts deliver the right amount of air to each room, you stop fighting hot and cold spots. Your thermostat actually controls your comfort.
Cleaner indoor air: Sealed return ducts stop pulling dusty attic air into your living space. You’ll spend less time dusting and breathe cleaner air.
Longer HVAC system life: When your furnace or air conditioner doesn’t have to run constantly to compensate for duct leaks, it lasts longer and needs fewer repairs.
Better performance from other upgrades: If you’ve invested in a new HVAC system, attic fan installation, or whole house fan, leaking ducts prevent you from getting full value. Fixing the ducts lets those systems perform as designed.
Improved home value: Properly functioning ductwork is a selling point during home inspections. Buyers notice energy efficiency and well-maintained systems.
Materials We Use for Air Duct Repair & Replacement
Mastic sealant: Professional HVAC mastic is a wet paste that dries into a permanent airtight seal. It flexes with temperature changes and lasts 20+ years. We use it on all joints and seams.
Metal-backed foil tape: UL-listed foil tape rated for HVAC applications. This is NOT hardware store duct tape, which fails within months. We use metal tape to reinforce connections and seal small gaps.
Insulated flex duct: R-6 or R-8 rated flexible duct with inner liner, insulation layer, and vapor barrier because it’s cost-effective, easy to route around obstacles, and provides good insulation.
Rigid sheet metal duct: Galvanized steel duct for main trunk lines and areas where durability matters most. More expensive than flex but lasts longer and handles higher airflow.
Rigid foam board duct insulation: For insulating existing sheet metal ducts that lack insulation. We wrap and seal with foil-backed insulation board rated R-6 to R-8.
Duct hangers and supports: Metal straps and supports to hold flex duct every 4-5 feet. Proper support prevents sagging, which restricts airflow and creates low spots where condensation collects.
Air Duct Service Areas
We repair and replace air ducts throughout the East Bay and broader Bay Area:
- Oakland
- Lafayette
- Walnut Creek
- Concord
- Berkeley
- Alameda
- San Leandro
- Castro Valley
- Pleasanton
- Livermore
- Hayward
- San Ramon
- Danville
Call (510) 500-5007 to confirm we serve your area and schedule your free inspection.
Frequently Asked Questions
Minor repairs (sealing leaks, reconnecting joints) take 2-4 hours. Replacing damaged sections in one or two rooms takes 4-6 hours. Complete duct replacement for a whole house takes 1-2 days depending on home size and attic access.
Repair costs depend on damage extent and accessibility. Simple sealing of leaks and gaps costs a few hundred dollars. Replacing damaged sections in hard-to-reach attic areas costs more due to labor. We provide exact pricing after inspecting your system. Call (510) 500-5007 for your free estimate.
Yes. The EPA reports that 20-30% of air moving through duct systems is lost to leaks, holes, and poorly connected ducts. Sealing those leaks means your HVAC system doesn’t have to work as hard or run as long to maintain temperature. Most customers notice lower bills within the first month.
No. Standard cloth-backed duct tape dries out and fails within months when exposed to attic temperature swings. Professional mastic sealant and metal-backed foil tape are designed for HVAC applications and last 20+ years. We’ve repaired countless ducts where homeowners used hardware store tape that failed.
We work in both attics and crawl spaces. Crawl space ductwork faces different challenges (moisture, ground contact, limited headroom), but the repair and replacement process is similar. We’re experienced working in tight spaces.
Not always, but it’s worth inspecting. If your ducts are leaking, undersized, or damaged, a new HVAC system won’t perform efficiently. We often find that homeowners who invest in new high-efficiency systems don’t get the expected energy savings because their old ducts waste the conditioned air. We’ll inspect your ducts and give you an honest assessment of whether replacement makes sense.
Air duct cleaning removes dust, debris, and contaminants from inside ducts. Air duct repair fixes holes, leaks, and damage to the duct material itself. Many homes need both: we find and fix leaks during repair work, then recommend cleaning if the ducts are contaminated. We offer both services.
Sometimes you need both. Uninsulated ducts in hot attics waste energy through heat transfer even if they’re not leaking. Leaking ducts waste energy even if they’re insulated. During your free inspection, we assess both the duct integrity and insulation and recommend the most cost-effective approach. Many customers combine our air duct services with our insulation services for maximum energy savings.
Why Choose Attic Solutions for Your Air Duct Repair
We’re a family-owned Oakland contractor serving the East Bay since 2010. We focus on doing the work right, not upselling services you don’t need.
Full-Service Approach
We handle insulation, rodent proofing, attic cleaning, and HVAC work.
Competitive Pricing
We keep our prices fair for the East Bay market. You get quality work without the inflated pricing.
179+ Five-Star Yelp Reviews
Our customers appreciate straightforward service, fair pricing, and quality work.
Free Estimates
We inspect your complete duct system and provide written pricing at no cost or obligation.
No Upselling
We tell you what needs fixing and what can wait. If your ducts only need minor repairs, we won’t sell you a full replacement.
Thorough Cleanup
We clean up completely after every job. Your attic or crawl space is left cleaner than when we started.