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Duct Cleaning · From $199

Plenum & Return-Box Cleaning

The plenums — the supply box that feeds every duct and the return box that collects air coming back — sit at the heart of the system and catch its heaviest debris. Because every cubic foot of conditioned air passes through them, dust, liner fragments, and microbial staining here matter more than anywhere else in the ductwork. We open both boxes with the system off, HEPA-vacuum and hand-wipe the interiors, inspect liner and insulation condition, and photograph the result. Often paired with a filter upgrade, and often the highest-value two hours you can spend on an older system.

Duration
1–2 hours
Warranty
1-year workmanship
Standard
NADCA ACR
Human reply
< 2 min

Prices shown are starting estimates and may change with the condition, access, and scope we find on site. Only a written quote from an on-site visit is a price we commit to.

What is it

What is plenum & return-box cleaning?

The plenums are the two sheet-metal or duct-board boxes joined to your air handler: supply on the leaving side, feeding every duct in the house, and return on the entering side, collecting everything the returns bring back. All of your conditioned air passes through both, every cycle, which makes them the highest-traffic surfaces in the entire system — and, on older systems, the place where liner degrades, dust cakes, and musty odors take hold. Cleaning them means opening the boxes with the system off, HEPA-vacuuming and hand-wiping the interiors, inspecting liner and insulation, and resealing the access properly.

Common signs you need this service

  • A musty smell strongest in the first minutes after the system starts
  • Visible dust or debris inside the filter compartment at changes
  • Filters darkening quickly even in low-dust seasons
  • Fiberglass fragments appearing at supply registers
  • The system is past fifteen years old and the plenums have never been opened

Every plenum & return-box cleaning includes:

  • Supply and return plenums HEPA-vacuumed and hand-wiped
  • Liner and insulation condition inspected and photographed
  • Access panels resealed with UL 181-listed foil tape
  • Fresh filter installed on request

Materials we use

HEPA vacuum with soft-bristle attachmentsNon-solvent surface cleaner safe for metal and duct linerUL 181-listed foil tape for resealing access panelsReplacement filter on request

Scoped from a camera inspection

At Prime Air Duct Experts, a plenum & return-box cleaning is never guesswork. We scope every job from a camera look inside the ducts first — weighed against EPA guidance on when the work is actually warranted — so what you approve is matched to what your system actually needs, with the photos to prove it. And if the camera says the work isn't needed, we tell you that instead.

Camera duct inspection
Built to code

The code your plenum & return-box cleaning has to meet.

A plenum & return-box cleaning isn't a matter of opinion — it's measured against published industry standards. Prime Air Duct does every job to the named standards below and documents it, so the work is provably right for you, an insurer, or a future buyer. These are the industry benchmarks our procedures follow on every job.

NADCA ACREPAASHRAE 52.2UL 181

NADCA ACR

The ACR standard treats the air handler's plenums as part of the air-conveyance system, cleaned by source removal and verified — which is exactly how we handle them.

Standards cited are the established industry benchmarks (NADCA, EPA, ASHRAE, UL) that our procedures follow on this service — the same method and documentation on every job, whether it's a single register or a whole-home system.

Our process

How a plenum & return-box cleaning job runs.

01

Power down and open

The system is shut off and both plenum boxes are opened carefully, preserving panels and seals for proper closure afterward.

02

Vacuum and hand-wipe

Interiors are HEPA-vacuumed, then wiped down with a non-solvent cleaner safe for metal and liner surfaces.

03

Inspect and photograph

Liner and insulation condition is documented. If degraded duct board needs replacing — an HVAC contractor's job — we say so plainly.

04

Reseal and document

Access points are closed with UL 181-listed tape, a fresh filter goes in on request, and the photo set is yours.

Why choose us

Why DFW homeowners pick Prime Air Duct for plenum & return-box cleaning.

We've worked on 0+ DFW homes over 15+ years. Every job — a single register or a whole-home system — runs the same way: trained technicians, written quotes, before-and-after photos, warranty in writing.

15+
Years experience
ACR
Cleaning standard
22
Metros covered

Hand-cleaned and photographed, not fogged and closed back up

Liner and insulation condition reported honestly — including when duct board is too far gone for cleaning to help

Access panels resealed with UL 181-listed foil tape, not whatever was rattling around the truck

Often the highest-value two hours you can spend on a system past its fifteenth year

Who we are

Prime Air Duct Experts. 15+ years on DFW duct systems.

Family-owned, NADCA ACR-standard, EPA-guided. We're the team you call when you want it done right the first time — no rotating subcontractors, no upsell pressure, no surprises. Same techs, same trucks, same standard.

NADCA ACR Standard
The air-duct cleaning benchmark
EPA-Guided
We clean only when it's warranted
Owner on every job
Personal accountability, every time
1-year workmanship warranty
In writing, every job
Prime Air Duct Experts technicians on site
Prime Air Duct
DFW Metroplex · ACR-Standard
NADCA ACR
Standard-driven
FAQ

Common questions about plenum & return-box cleaning.

Do I actually need my air ducts cleaned?

Maybe not — and we'll be the ones to tell you. EPA guidance says duct cleaning is warranted in three situations: visible mold, vermin in the ducts, or significant dust and debris buildup. Not on a calendar, not automatically every few years. Our $99 camera inspection checks your system against those conditions and gives you a straight verdict with photos. A meaningful share of inspections end with 'not yet, re-check in a couple of years' — and that answer costs you $99, not $600.

How much does air duct cleaning cost?

A full-system source-removal cleaning starts at $349, targeted supply-and-return work at $199, and a camera inspection at $99. Those are honest starting points, not bait: your exact quote is confirmed after we look at the system on camera and before any work begins, and it doesn't change mid-job. Add-ons like sanitizing ($149) or a UV light ($399) are offered only when the footage shows a real indication — our technicians don't earn commissions.

How long does a full-system cleaning take?

Three to five hours for a typical single-system home. The honest variables are the number of runs, attic access, duct type, and how much debris the system is carrying — a two-system two-story takes longer than a compact ranch. We'd rather quote you a real window than promise a ninety-minute miracle, because whole-home source removal physically cannot be done in ninety minutes. You'll get a specific time estimate with your quote, and the system is back on the moment we finish.

How often should air ducts be cleaned?

There's no honest fixed schedule, and we won't invent one. Ducts need cleaning when their condition says so — after a renovation, a pest issue, a moisture event, or gradual buildup that's now visible on camera. Some systems go a decade staying respectable; others load up in three years because of construction next door or a heavy-shedding pet. The economical habit is an inexpensive camera inspection every few years: it either buys you peace of mind or catches the problem while it's a targeted cleaning instead of a full one.

Will duct cleaning help my allergies?

Here's the careful answer. Cleaning removes the reservoir of settled dust, pollen, and dander that your system can re-circulate — in Texas, that reservoir includes cedar, oak, and ragweed seasons past. What it won't do is cure allergies or stop new pollen from entering the house, and EPA notes that duct cleaning has never been conclusively shown to prevent health problems. We treat it as hygiene, not medicine: empty the reservoir, then pair it with the right filter, which often matters just as much. Anyone promising more than that is selling.

Last reviewed:

15+
Years in the field
NADCA ACR
Standard
48h
Written report
< 2hr
Response
Ready when you are

Get it inspected. Get it in writing.

Flat fee confirmed when you book. Same-week scheduling. A pass/fail verdict within 48 hours.

Licensed & Insured Same-Week Scheduling Photo-Documented Findings
Emergency

24/7 Response

Water intrusion in the ducts, a musty smell that won't quit, or vermin in the system? We answer 7 AM to midnight and every visit ends with camera photos and a written verdict — including a straight "your ducts are fine" when that's what we find. After-hours dispatch runs subject to crew availability.

Emergency line
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