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Air Duct Cleaning
What Is Actually in Your Ducts
Open a supply register in a Central Texas home that has never had its ducts cleaned and you will usually find a gray felt of dust, pet hair and pollen lining the first few feet. Farther in, where the flex duct sags and the air slows, it settles thicker. Every time the blower starts, some of it lifts and rides out into the rooms. That is why the dust on the nightstand comes back two days after you wipe it.
Duct cleaning is not something every house needs every year, and we will not tell you it is. It makes a real difference after a remodel, after a pest problem, when you move into a house with an unknown history, when a filter has been missing or bypassed for a long time, or when the ducts have simply never been done. A big part of the visit is an inspection, because dirty ducts and leaky ducts usually go together, and cleaning a duct that is pulling attic air through a gap solves the problem for about a month. If we find leaks, we will show you and price sealing separately. You decide.
Every job is backed by the Home Comfort Guarantee: an accurate written quote before any work, honored for 72 hours.
Looking for your local team? See duct cleaning in Austin or duct cleaning in San Antonio.
- Inspected before it is cleaned We look at the ducts, the return and the filter slot first. If cleaning is not the fix, we say so.
- Supply and return, not just the vents The trunk lines, branch runs, plenums and the blower compartment, which is where most of the buildup lives.
- One price, in writing You approve the number before a single register comes off. No add-ons appear mid-job.
When It Helps
Signs Your Ducts Are Due for a Cleaning
None of these are emergencies. All of them mean the ductwork is moving something you would rather not breathe.
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Dust returns within a day or two
The classic sign. If wiping the furniture is a twice-a-week job, the ducts are reloading the rooms every time the system runs.
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A recent remodel or new construction
Drywall dust and sawdust get sucked into open returns during the work and sit in the ducts long after the contractor leaves.
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Dark streaks around the supply vents
Gray or black smudges on the ceiling at the register edges are dust being blown out of the duct and sticking to the paint.
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Rodents or insects in the attic
Attic ducts are an easy target. Droppings and nesting material inside a duct need to come out, and the entry point needs sealing.
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A musty smell when the system starts
The first blast of air after the blower kicks on carries whatever has been sitting in the plenum. A clean system smells like nothing.
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You just bought the house
You do not know when the filter was last changed or whether the previous owner had three dogs. Cleaning gives you a known starting point.
What We Clean
The Whole Air Path, Not Just What You Can See
Vacuuming the register grilles is a cleaning-service job. This is the duct system.
- Supply trunk and branch runs The main lines and every branch out to the rooms, agitated and pulled under negative pressure so loosened debris goes to the vacuum, not the bedroom.
- Return ducts and plenum The dirtiest part of most systems, because everything the filter did not catch lands here first.
- Blower compartment and housing Dust caked on the blower wheel cuts airflow and makes the motor work harder. We clean it as part of the job.
- Registers and grilles Removed, cleaned and put back. If a grille is bent or a boot is loose behind it, we tell you.
- Leak and damage check Disconnected joints, crushed flex runs and torn insulation get noted and priced separately as sealing or repair. Never a surprise on the bill.
- Filter and return setup A clean duct stays clean only if the filter fits and seals. We check the size, the slot and whether a media cabinet makes sense.
How It Works
What a Duct Cleaning Visit Looks Like
Plan on a few hours for a typical house. You can stay home the whole time.
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Inspect and quote
We look at the ducts, count the runs, check for leaks and damage, and give you a written price. If cleaning is not what you need, we tell you.
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Protect the house
Floors and furniture near the work get covered. Registers come off and go in a bin, not on your bed.
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Clean under negative pressure
The system is put under vacuum so everything we loosen in the ducts travels to the collection unit instead of into the rooms.
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Reassemble and run
Registers go back on, the filter goes in fresh, and we run the system to confirm airflow before we leave.
Current Specials
Save on the work your home needs most.
Tired of Dusting the Same Shelf Twice a Week?
Get a written price for duct cleaning in Austin or San Antonio. No pressure, and no surprise fees.
What Our Customers Say
Don't just take our word for it — hear from our satisfied customers
★★★★★
Our 18 year old HVAC system finally gave out this past week, so we reached out to Radiant to see what could be done. They sent a tech out named Bryan the same day, and he did a great job looking over the entire HVAC system. He was friendly and helpful in explaining everything that he saw, and our options moving forward. We decided to replace the entire system, so we met with Jacob (same day thankfully) to find the best HVAC system for our needs. Jacob was friendly, professional, and did a great job explaining the different options on offer. Radiant was able to set-up next day install, which was much appreciated, because the temps were still going to be cold in the coming days.
The install team consisted of Carlos and Pablo, who were very courteous and professional, and were kind enough to answer any questions I had regarding the install. They did a great job installing our new HVAC system, and were tidy which is always appreciated! Before they left, they explained everything that had been done, and showed me photos of the work.
Our entire experience from start to finish was great. I appreciate that they send photos of who is coming to your home too. Friendly, kind, professional team members, and good work all the way around. Thanks Radiant!
The install team consisted of Carlos and Pablo, who were very courteous and professional, and were kind enough to answer any questions I had regarding the install. They did a great job installing our new HVAC system, and were tidy which is always appreciated! Before they left, they explained everything that had been done, and showed me photos of the work.
Our entire experience from start to finish was great. I appreciate that they send photos of who is coming to your home too. Friendly, kind, professional team members, and good work all the way around. Thanks Radiant!
★★★★★
This is the first time I’ve used radiant my neighbor recommended them…. I called them today and they set me up an appointment on the same day. I was totally shocked at that and the service call was only $39!!…. Highly recommend them Danielle showed up and he was a great guy and he put up with all my wishy-washiness and I had to hurry him because I was heading to church and he got caught in a lot of traffic getting here he even would’ve installed the part that broke but I Didn’t have the time tonight….. He was patient with me and just told me to call the office first thing in the morning and get a service call set up…. Thank you so much Radiant!!….
With another cold front coming in tomorrow now I just hope they can get me scheduled for a separate call tomorrow but I have a feeling they will. They are such a great company!!😊😊
With another cold front coming in tomorrow now I just hope they can get me scheduled for a separate call tomorrow but I have a feeling they will. They are such a great company!!😊😊
★★★★★
Alex performed the winter service on my unit. This business along with Alex, are very professional and upfront about everything. To be transparent, this is the maintenance included with the purchase of a unit from them. I was informed about everything to include pictures as proof. I was told that my unit is 100% and very clean and again pictures to prove it. I was reccomended this business by a friend and glad he did. The initial purchase experience was also amazing. I had contacted 5 other businesses to get quotes about a new unit as my upstairs unit failed. 2 were outrageous quotes and I am technically still waiting on the other 3. On every instance of getting a quote, I waited about 1 week. Luckily my house has two units but still, un acceptable especially during the summer. I guess they all had so much business they did not care for mine. When I called this business not only did they come out the same day, I had the new unit installed with in 48 hrs. Oh and let's not forget the quote they gave me was the lowest of all. I can say enough good things about this business. Keep up the great work.
Maintenance Membership
Join the Care Club
Home maintenance for $9.99 a month.
Care Club members get two HVAC tune-ups and a plumbing safety inspection every year, priority scheduling, no dispatch fees — ever — and 5% off every repair.
- Priority scheduling
- Seasonal HVAC tune-ups
- Annual safety inspection
- Exclusive member discounts
- Free dispatch on repairs
- No long-term contracts
Duct Cleaning Questions
How often should air ducts be cleaned in Central Texas?
There is no fixed schedule, and anyone who says every year is selling something. For a house with a properly fitted filter and sealed ducts, many years between cleanings is normal. What shortens the interval is what gets into the ducts: a remodel, a pest problem, a long stretch with a missing or undersized filter, pets that shed heavily, or duct leaks pulling attic dust into the return. Cedar season adds to it, but a good filter changed on time handles most pollen. If you are unsure, an inspection answers the question with a camera instead of a guess.
Will duct cleaning help with allergies?
We are not doctors and will not make health claims. What duct cleaning does is physical: it removes the dust, pollen, dander and debris that have settled in the duct system, so the blower stops lifting it into the rooms each cycle. Homeowners tell us the house stays cleaner and the air smells fresher afterward. If pollen is the main concern, the bigger levers are usually a better filter changed on schedule and sealed ducts so the system is not drawing unfiltered attic air. We will tell you which of those makes the most sense for your house.
Can duct cleaning damage my ductwork?
Done carelessly, yes, especially on flex duct, which is a wire coil wrapped in thin plastic and insulation. Aggressive rotary brushes can tear the inner liner. Our technicians use methods matched to the duct type: sheet metal trunk lines take more agitation, flex runs get gentler air-driven tools. We also look before we clean, so a run that is already torn or crushed gets repaired rather than cleaned around. If we find damage that was there before we arrived, you will see it and get a separate written price for the repair.
What if there is mold in the ducts?
Dark growth on the inside of a duct or on the coil is usually a moisture problem: a clogged condensate drain, an evaporator coil that stays wet, or humid attic air leaking into the return. Cleaning removes what is there, but if the moisture source is not fixed it comes back. So we look for the cause at the same time, and the fix may be as simple as clearing the drain line or as involved as a dehumidifier for a house that never gets dry. We will show you what we find and let you decide what to do about it.
Should I have the ducts cleaned before or after a new AC install?
Before, if the ducts are staying. A new system pushes more air than the tired one it replaced, and it will happily blow years of settled dust out of old ductwork into a freshly cleaned house. Cleaning first, and sealing any leaks while the ducts are open, means the new equipment starts with a clean path and its coil stays clean longer. If you are planning an AC replacement, ask us to look at the ducts during the estimate so both jobs can be priced together.
*Offers cannot be combined with other promotions or applied to dispatch fees. No cash value. Must present offer at time of service. Call for details.
