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 Simi Valley Homeowners
Damaged ductwork quietly wastes money and pulls dust, insulation fibers, and crawlspace air into your living space. In Simi Valley, where summer temperatures push past 100°F and Santa Ana winds coat every surface in fine grit, gaps and disconnects in your ducts make your HVAC system work harder for air that never reaches the right rooms. We’ve been repairing, sealing, and replacing duct systems since 2013, and we carry the equipment to do it properly: Rotobrush and Nikro extraction rigs, Abatement Technologies tools for contaminated environments, and the hands-on experience to fix what a cleaning-only company would walk past. Call (855) 353-2270. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
HVAC Duct Installation
HVAC Duct Installation means running new supply and return ductwork for a new system, an addition, or a gut renovation where the old duct layout no longer makes sense. In Simi Valley’s housing stock, a lot of original ducts from the 1960s and 70s are undersized for modern heat pumps and high-efficiency furnaces, so installing correctly sized runs is often the difference between a comfortable home and one where bedrooms never cool down. We size the runs to the equipment, seal every joint, and test static pressure when the job is done so the system delivers air where it’s supposed to go, not into the attic. A full HVAC duct installation in Simi Valley typically runs $3,000 to $7,500 depending on the home’s footprint, the number of runs, and access to the attic or crawlspace.
When New Ducts Make More Sense Than Patchwork
If your existing ductwork has more than three significant failures, or if the layout was never right for the system it serves, patching gets expensive without fixing the underlying problem. We’ll tell you straight: some systems deserve repair, and some deserve replacement. The estimate shows you both options with honest numbers.
What Installation Includes
We run properly sized metal and flex duct, build and seal the plenum transitions, and install damper controls where a room needs its own airflow. Every run is strapped, supported, and sealed per current mechanical code. After installation, we test the system and walk you through what we found.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Air Duct Replacement
Air Duct Replacement is removing sections, or entire runs, of ductwork that are crushed, torn, water-damaged, or contaminated beyond what cleaning can safely address, and swapping in new material. In Simi Valley, the most common reasons for air duct replacement are rodent damage in attics, ducts that have collapsed from poor support, and years of accumulated dust that has mixed with moisture into a grimy film you can’t simply brush out. We replace only what needs replacing and connect it cleanly to the existing system, so you’re not paying for work that doesn’t need to happen. Typical air duct replacement ranges from $800 to $3,500 depending on how many runs are bad and how accessible they are.
Material Choices for Simi Valley Homes
Most homes in this area use flexible insulated duct for branch runs and sheet metal for larger trunk lines. We’ll match what’s there or upgrade to rigid metal where it’s warranted, especially in attics where summer heat can break down cheap flex over time. The right material choice matters as much as the installation quality.
When Cleaning Can’t Do the Job
Some ductwork is too far gone. If the inner liner of a flex duct is torn, or if the duct has been wet and shows visible mold growth, cleaning alone won’t restore it and can actually make dust problems worse by agitating loose fibers. We inspect first with a camera, then recommend what the evidence supports, not what’s easier for us to sell.
Ductwork Repair
Ductwork Repair is correcting specific failures in an existing system: separated joints, crushed sections, small holes, poor hanger support, or failing tape and mastic at connections. Houses across Simi Valley lose a measurable amount of conditioned air through leaky ducts, which is one reason some rooms stay hot while others freeze. We locate the leaks, reseal them with the right materials, and repair the structure so the air you paid to condition actually lands in your rooms. Ductwork repair in Simi Valley typically runs $250 to $1,200 depending on the number and location of the failures.
Sealing Methods That Actually Hold
We use fiberglass mesh tape and mastic, not hardware-store duct tape, because duct tape dries out and fails within a few years in attic heat. At key joints we’ll add mechanical fasteners so the seal isn’t the only thing holding the duct together. The result is a connection that holds through temperature swings and airflow pressure.
Where Leaks Hide
The most common leak points we find are at the plenum connection, at register boots, and wherever two sections of flex were joined in a hurry during the original install. We check all of these with the system running so we can feel and hear where air is escaping, then patch and seal every site we find. The temperature difference before and after is usually noticeable within a day.
Duct Replacement
Duct Replacement refers to the larger job of swapping out the majority, and sometimes all, of the ductwork in a home, usually because the system is old, heavily contaminated, or fundamentally misconfigured for the house. In Simi Valley, this often becomes necessary after a major roof or attic renovation, when insulation contractors have crushed ducts, or when a home has had a serious vermin problem that left the ductwork unsanitary. We remove the old material, haul it away, and install a properly designed system from the plenum to the registers. A full duct replacement for a typical 2,000 to 2,800 square-foot Simi Valley home generally falls between $4,500 and $9,000.
Why Whole-System Replacement Gets Cheaper Per Year
Replacing all the ducts at once costs more today but eliminates the repeat repair cycle. A system with consistent sizing, sealed joints, and clean internal surfaces runs more efficiently, which lowers utility bills and reduces the frequency of service calls. We’ll show you the math on the estimate so you can decide with clear eyes.
What We Remove and What We Leave
We remove old ductwork, take away the debris, and leave the mechanical equipment and registers in place unless they’re also failing. If your furnace or air handler is in good shape, it stays. We’re not going to sell you equipment you don’t need, and we’ll tell you if the blower is worth keeping before we attach new ducts to it.
Ductwork Installation
Ductwork Installation is the complete build-out of a home’s air distribution network, from the main trunk lines to the branch runs and register connections. Simi Valley homeowners who build additions, convert garages, or finish attics need this service because you can’t simply add another vent to a duct system that was sized for the original square footage. We design the layout so every room gets balanced airflow, install the duct support system, and deliver a sealed, insulated network that moves air efficiently. Ductwork installation for a new addition in Simi Valley typically costs $1,800 to $5,500 depending on the size of the space and the distance from the existing equipment.
Room-by-Room Air Balance
A duct system only works when the air volume matches the room. A bedroom added on the far side of the house needs a properly sized run, and we calculate that based on the room’s dimensions, window exposure, and distance from the air handler. If the system can’t support the addition, we’ll tell you before any work starts.
Connecting to the Existing System
When you add a room, the new ductwork has to tie into the existing plenum or trunk line without starving the rest of the house. We calculate the added static pressure and confirm the blower can handle it. If it can’t, we’ll recommend a duct configuration or blower adjustment so the whole house still works after the addition is finished.
Brands We Service
We work with Honeywell filtration and humidity control systems regularly, which means our technicians understand how whole-home air quality equipment interacts with the ducts attached to it. When a Honeywell media cabinet or electronic air cleaner sits on top of leaky ductwork, the filter can’t do its job, and we address both sides of that equation in the same visit.
Equipment from Rotobrush and Nikro is what we run on the truck, and we know how these systems behave in real residential ductwork, not just on a spec sheet. That matters when we’re cleaning the surrounding ductwork before a repair, so we’re not sealing dust and debris inside a freshly patched run. Whether you have a Guardsman register system or any other make of vents, grilles, and dampers, we can service it without ordering specialty parts and leaving the job half-done.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Rooms that never reach the temperature you set. If some rooms in your Simi Valley home are always ten degrees behind the thermostat, the duct feeding them may be disconnected or partially collapsed. Air is still moving, but it’s dumping into the attic instead of the room.
- A sudden jump in your utility bill with no change in usage. Leaky ducts let conditioned air escape, which makes the system run longer to hit the setpoint. If your bill spiked and your habits didn’t, the ductwork is a likely culprit.
- Dust on surfaces within days of cleaning. Air pulled through gaps in the return duct carries attic insulation and fine dirt straight into the house. If your furniture has a film of dust two days after you wipe it, the returns are pulling from the wrong place.
- Whistling, rattling, or banging noises from the attic or walls. A high-pitched whistle at a register usually means a small hole or separated joint under pressure. Banging or flapping sounds often mean a duct has come off its hangers and is moving with the airflow. Both are repairable before they become bigger failures.
- Visible crushed flex or hanging ducts in the attic. If you’ve been in your attic and seen ductwork flattened under boxes or insulation, that restriction is choking airflow to part of the house. Crushed ducts don’t recover on their own, and the fix is usually straightforward if it’s caught early.
Our Process, Step by Step
- 1
Inspection with a camera. We start by putting a camera into the ductwork to see the actual condition of the interior surfaces, joints, and connections. You see the footage on our screen, so the recommendation is based on evidence you can look at yourself.
- 2
Pressure and airflow check. We run the system and check airflow at registers, listen for leaks, and locate where air is escaping. This tells us whether the problem is one bad joint or a systemic issue across the whole layout.
- 3
Written estimate with options. If the system needs repair, we quote the repair. If it needs replacement or a larger installation, we show you the scope and the cost before any work begins. Our estimates are free, and the price is set per job by the written estimate.
- 4
The repair or installation itself. We do the work with the home protected: drop cloths at access points, careful attic navigation, and sealed connections at every joint. If we’re cleaning first, we run the Rotobrush or Nikro system so repair work goes into a clean duct, not a dirty one.
- 5
After-work verification. We rerun the system, check airflow again, and confirm the repair holds under pressure. You’ll see before-and-after photos of the work so there’s no question about what was done behind the wall or above the ceiling.
How Much Does Air Duct Repair Cost in Simi Valley?
A typical air duct repair in Simi Valley runs between $250 and $1,200 for common failures like separated joints, small holes, and crushed sections. A larger air duct replacement job, where we’re removing and reinstalling multiple runs, usually lands between $800 and $3,500. Full-system duct replacement across a whole house ranges from $4,500 to $9,000, and new HVAC duct installation for an addition or renovation typically costs $3,000 to $7,500. These are honest ranges based on what we see in homes around Simi Valley, not bait-and-switch numbers designed to get a truck in your driveway.
What actually moves the price: access to the attic or crawlspace, the number of runs that need attention, whether we’re matching existing materials or upgrading them, and whether the surrounding ductwork needs cleaning before we close the system back up. The way to avoid overpaying is to work with a company that shows you camera footage of the damage and a written estimate before work starts. Our estimates are free, and the price is set by the written estimate, not changed after the fact.
Before-and-after photos come standard. You’ll see exactly what was repaired and how it looks when we’re done. Call (855) 353-2270 for a free estimate that covers the specific condition of your ductwork.
Our Service Area Near Simi Valley
We serve homeowners across Simi Valley and the surrounding communities, including Thousand Oaks, Moorpark, Oak Park, Agoura Hills, Westlake Village, Calabasas, and Hidden Hills. We also work into the west San Fernando Valley, covering Woodland Hills, Northridge, Canoga Park, and Reseda. If you’re anywhere in these areas and your ductwork needs attention, we’ll schedule the inspection and get a technician to you fast. Call (855) 353-2270. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Serving Simi Valley, CA – Our Local Coverage Area
We serve Simi Valley and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
Frequently Asked Questions About Air Duct Repair in Simi Valley
Air duct repair is fixing specific failures in your home’s ductwork: separated joints, holes, crushed flex runs, failed tape and mastic, and disconnected register boots. In Simi Valley homes, these failures let conditioned air escape into attics and crawlspaces, which raises utility bills and pulls dust into living areas. We locate the failures with a camera and repair them so the system delivers air to the rooms it was designed for. Call (855) 353-2270 for a free estimate.
Most repairs in Simi Valley are completed in one visit, typically two to four hours depending on how many failures we find and how accessible the ductwork is. A larger replacement job, where multiple runs need to come out and new ones go in, can take a full day or longer. We’ll give you a realistic time frame on the written estimate before work begins. We answer 24/7, so you can call (855) 353-2270 whenever the question comes up.
Small repairs like sealing a separated joint typically run $250 to $600. Replacing a single damaged flex run usually falls between $400 and $900. Larger jobs covering multiple runs or a significant portion of the system range from $800 to $3,500. Full system replacement in Simi Valley generally costs $4,500 to $9,000. The written estimate sets the final price, and it’s free. Call (855) 353-2270 for an exact quote.
Yes, our technicians are familiar with Honeywell whole-home filtration and Aprilaire humidity control equipment, and we work around what’s already installed in your home. When a Honeywell media cabinet or electronic air cleaner is attached to leaky ductwork, we address the ducts so the filter can actually do its job. We don’t bypass or disconnect existing equipment; we repair the ductwork it depends on. Call (855) 353-2270 to schedule an inspection.
Same-day service is often available when we have an open slot in the dispatch schedule. We answer 24/7, and fast dispatch runs from 7am to 7pm, Sunday through Friday. If the repair is urgent, like a duct that’s completely disconnected during a heat wave, call (855) 353-2270 and we’ll confirm the next opening for you.
Our work is done to hold, and when failures are related to the repair we performed, we’ll make it right. The specifics depend on the scope of the job and the materials involved, and we’ll outline exactly what’s covered on your written estimate before any work starts. Ask during the estimate call at (855) 353-2270, and we’ll walk you through it.
Clear a path to the attic access or crawlspace entry, move anything stored near the furnace or air handler, and make sure we can reach the registers in the affected rooms. If you have pets, keep them in a separate room while we’re working so they don’t get underfoot in the attic or around the equipment. That’s really all you need to do. We bring drop cloths and protect the work area, so the house stays clean while we fix the ducts.
Schedule Your Air Duct Repair Service in Simi Valley Today
If your rooms aren’t cooling evenly, your energy bill has spiked, or you can feel air blowing where it shouldn’t, the ductwork is the first place to look. We’ll show you camera footage, give you a written estimate, and fix what’s actually wrong. Call (855) 353-2270 now for a free, no-obligation estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by Earl Conway, Owner at Duct Cleaning Simi Valley, serving Simi Valley since 2013.