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 San Clemente Homeowners
Duct leaks in San Clemente homes quietly push conditioned air into attics and wall cavities instead of your living spaces. You end up paying to cool spaces nobody uses while certain rooms never reach the set temperature. Monarch Air Duct Cleaning has been fixing these problems since 2012, bringing the same professional-grade equipment we use for cleaning into structural duct repair work. Our crews use Rotobrush rotary-brush systems and Nikro HEPA-rated negative-air vacuums, the same dual-method combination remediation professionals rely on. When a San Clemente homeowner finds crushed, disconnected, or torn ductwork, we repair it properly so the system moves air where it belongs. Call (866) 282-7304. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
HVAC Duct Installation
HVAC Duct Installation means building out a complete duct system for a new space, an addition, or a home that never had proper ductwork in the first place. In San Clemente, this work typically runs $1,400 to $3,200 depending on the number of runs, accessibility, and whether the system ties into existing supply and return plenums. Monarch Air Duct Cleaning handles this as a full-scope job, sizing runs correctly rather than just connecting whatever fits. We measure static pressure and airflow so the finished installation actually delivers across every vent. The written estimate sets the final price before any work starts.
Sizing That Matches the System
A duct run that’s too small chokes the blower and shortens equipment life. A run that’s too large wastes energy moving air that loses velocity before it reaches the room. We calculate based on your existing HVAC unit’s CFM output and the room-by-room load, not a one-size-fits-all template.
Sealed From Day One
Every joint on a new installation gets sealed properly so the system performs like the design says it should. That matters most in San Clemente’s mild climate, where you want the air you’re paying to condition reaching the rooms instead of escaping into unconditioned wall cavities.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Air Duct Replacement
Air Duct Replacement is the full removal and swap-out of existing duct runs that have reached the end of their useful life, been damaged by pests, or collapsed from age. Homeowners around San Clemente typically see pricing from $1,800 to $3,500 for a full replacement, depending on home size, duct accessibility, and whether the returns need reworking too. Monarch Air Duct Cleaning removes the old material, installs new properly-sized runs, and reconnects the system so it performs like a fresh installation. The same professionalism we bring to cleaning shows up here: clean work, sealed joints, and a system that balances across rooms.
When Repair No Longer Makes Sense
A torn section can be patched. A run with corrosion, pest damage, or multiple failed joints usually just needs to go. We’ll tell you straight which situation you have, and we won’t push a full replacement when a targeted fix gets the job done.
Retrofitting Older Homes
Older San Clemente houses often have narrow returns and undersized branch runs from decades-old HVAC standards. Replacing those runs with correctly-sized ductwork often changes how comfortable the farthest rooms feel, especially during the warmer stretches of the year.
Ductwork Repair
Ductwork Repair covers the targeted fixes that restore a damaged system without replacing everything: sealing disconnected joints, patching tears, re-supporting sagging sections, and replacing crushed elbows. For San Clemente homes, repair work typically runs $400 to $1,100 depending on how many sections are involved and where they sit. Monarch Air Duct Cleaning approaches repair with the same contamination-control mindset we bring to cleaning, using Abatement Technologies air filtration equipment to keep work debris from circulating while we fix what’s broken. We fix what needs fixing, and we leave the rest alone.
Finding Leaks You Can’t See
Most duct leaks hide in attics, behind walls, or under floors where you’ll never spot them from the living room. We trace the runs, check every accessible joint, and use backpressure readings to identify sections that are losing air. Some problems show up as dust streaks, others only show up in your utility bill.
Supporting Sagging Runs
Long horizontal duct runs sag over time, separating at the seams and creating gaps that bleed conditioned air. Re-supporting those runs with proper hangers and re-sealing the joints often solves uneven room temperatures without any other work needed.
Duct Replacement
Duct Replacement is the targeted swap of specific sections that have failed, rather than the whole system. It’s the right call when a clear section is crushed, torn, or compromised but the surrounding ductwork is still sound. In San Clemente, expect to pay $600 to $1,800 for a section replacement depending on the run length, duct diameter, and how difficult the area is to access. Monarch Air Duct Cleaning handles these focused swaps cleanly and quickly, matching the existing system so the new section integrates without creating new airflow losses. It’s the same professional-grade approach, scoped to just what needs changing.
Match-To-System Materials
We match the replacement section to your existing duct type and dimensions so the airflow stays consistent across the transition. A mismatched section creates turbulence and static pressure changes that show up as whistling or reduced flow at the register farthest from the blower.
Isolated Damage, Isolated Fix
Crushed section from stored boxes? Pest damage in one corner of the attic? Those are section-level problems with section-level solutions. We don’t sell a whole-system replacement for what a focused swap solves.
Ductwork Installation
Ductwork Installation involves adding new runs off an existing system to serve spaces that were never properly conditioned, like a converted garage, a sunroom, or a room that’s always been the temperature outlier. San Clemente homeowners generally spend $800 to $2,000 for adding one to three new supply runs with a properly-sized return path. Monarch Air Duct Cleaning plans the tap locations so the added runs don’t starve the rest of the house, a mistake we see from quick jobs that splice in anywhere convenient. The result is better balance across the whole home, not just the new space.
Tapping Without Starving the System
Every new supply run pulls a share of the blower’s output. Tapping in without considering the existing load leaves the original rooms with weak airflow. We check the blower’s capacity and the current duct layout before recommending where, or whether, to add runs.
Returns Matter as Much as Supplies
A room that gets supply air but no return path just pressurizes and pushes air out under doors, never truly conditioning the space. Proper ductwork installation pairs supply runs with return paths so air actually circulates through the room.
Brands We Service
We service and repair duct systems connected to Honeywell-managed HVAC setups, and we know where those systems typically develop leaks and disconnects across their runs. Our experience with Honeywell’s zoning and control integration means we understand how duct pressure affects damper operation and comfort settings. The same goes for Aprilaire systems, where we see how filter restrictions and duct leaks interact to reduce whole-home air quality performance.
We work alongside Guardsman products in repair scenarios where duct support and connection hardware needs replacement, and our familiarity with Rotobrush and Nikro systems means we understand the full lifecycle of the ductwork we service. Whether you have Honeywell controls, Aprilaire air quality systems, or any other make, we can help.
See the difference
Before
After
Before
After
Before
AfterSigns You Need a Pro Right Now
- Rooms that never reach the set temperature. You set the thermostat to 72, one room sits at 78 while the others over-cool. That’s a classic sign of a disconnected or crushed supply run. Your system compensates by running longer, which wastes energy every month.
- Dust streaks around ceiling vents. Disconnected joints pull attic air into the duct stream and push it through your registers. The visible streaking around vent openings means unfiltered, unconditioned air is entering the system somewhere upstream.
- Whistling or metallic popping sounds from the walls or ceiling. Air escaping through a small gap creates turbulence you can hear. Popping often comes from duct sections flexing under pressure changes. Both are mechanical problems that get worse, not better.
- Insulation pulled into the duct opening. When a joint separates, the suction from the return side can pull loose insulation fibers right into the air stream. You’re breathing attic insulation. That’s a repair and possibly a cleaning job, not a wait-and-see situation.
- Your energy bill climbs without a matching change in usage. Leaking ducts mean your HVAC runs longer to hit the same temperature. If the bill keeps rising and the weather hasn’t changed, the system is losing conditioned air somewhere you can’t see.
Our Process, Step by Step
- 1
We inspect the system. Every repair starts with a full walk-through of the accessible ductwork, checking joints, supports, and register connections. We look for the problem you called about and anything else that’s failing quietly nearby.
- 2
We measure and diagnose. Airflow measurements at each register, static pressure readings, and visual tracing of the runs tell us where air is going and where it’s escaping. You get a straight explanation of what’s wrong before any tool touches your ductwork.
- 3
We give you a written estimate. No surprises, no vague ranges after we arrive. The scope, the approach, and the price are all in writing before work starts. You approve it first.
- 4
We repair properly. Using Abatement Technologies air filtration equipment to control dust, our crew seals leaking joints, replaces damaged sections, or re-supports sagging runs depending on what the diagnosis showed. Work is clean and contained.
- 5
We verify the fix. After the repair, we re-check airflow and pressures to confirm the problem is actually solved. You get before-and-after readings that show the difference, not a promise that it feels better.
How Much Does Air Duct Repair Cost in San Clemente?
What moves the price most is access. A disconnected joint in an open attic costs far less to reach than the same problem under a finished floor. Duct diameter and material also matter, as do the number of sections involved and whether new support hardware needs installing. The cheapest route is rarely the right one: a quick tape-over job fails months later, and you pay twice. A free estimate from us includes the inspection, the diagnosis, and a written scope of work. You know the price before you commit, and you see what’s actually wrong before you pay a dollar.
Our Service Area Near San Clemente
Beyond San Clemente itself, we regularly serve Dana Point, Ladera Ranch, Rancho Mission Viejo, Coto De Caza, San Juan Capistrano, and the surrounding communities. We also take calls from homeowners in Rancho Santa Margarita, Foothill Ranch, Portola Hills, San Joaquin Hills, Irvine, and Oceanside. Our crews dispatch from 7am to 7pm, Sunday through Friday, so response times stay tight across the whole area.
Serving San Clemente, CA – Our Local Coverage Area
We serve San Clemente 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 San Clemente
What is Air Duct Repair?
Air Duct Repair is the process of fixing damaged, disconnected, or leaking ductwork so your HVAC system stops losing conditioned air into unconditioned spaces. That includes sealing separated joints, replacing crushed sections, re-supporting sagging runs, and patching tears. The goal is an air delivery system that moves the air your blower pushes, where you actually want it to go.
How long does duct repair take?
Most targeted repairs finish in two to four hours. A full air duct replacement usually takes one full day, sometimes two if the home has multiple systems or difficult attic access. We’ll give you a time window in the written estimate so you can plan around it.
How much does air duct repair cost in San Clemente?
In San Clemente, targeted ductwork repair typically runs $400 to $1,100, section replacement runs $600 to $1,800, and full replacement runs $1,800 to $3,500. The written estimate sets the exact price. Call (866) 282-7304 for a free estimate on your specific system.
Do you service Honeywell and Aprilaire systems?
Yes. We work with Honeywell-controlled HVAC setups and Aprilaire air quality systems regularly, and we understand how duct conditions affect their operation. We also handle Guardsman support and connection products. If you have another make, we can still help.
Can you do same-day service and what are your dispatch hours?
Same-day service is available. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. A call outside dispatch hours is booked into the next opening, Sunday through Friday, 7am to 7pm.
Do you offer a warranty on repairs?
We stand behind our workmanship and will address any issues that come up after we leave. The specifics depend on what was done, and we’ll cover that in the written estimate so you know exactly what to expect.
How do I prepare for a duct repair visit?
Clear access to the attic hatch, crawl space entry, or wherever the ductwork runs is the main preparation. Move any stored items near the work area if you can, and keep pets in a separate room while we work. We’ll handle the rest from there.
Schedule Your Air Duct Repair Service in San Clemente Today
Leaking ducts don’t heal themselves, and every month they go unfixed costs you money and comfort. Call Monarch Air Duct Cleaning at (866) 282-7304 for a free, no-obligation estimate on your air duct repair in San Clemente. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Written by Earl Everett, Owner at Monarch Air Duct Cleaning, serving San Clemente since 2012.