Whole-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.
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AfterFast, Reliable Air Duct Repair Across Des Moines
If your Des Moines home has a duct run that’s sagging, leaking, or blowing musty air through the registers, here’s the short version: most duct repairs in this city run between $350 and $900 for a targeted fix, while full replacement of a crawl-space system typically lands between $1,800 and $4,200 depending on the size of the home and how much of the existing ductwork is salvageable. We’re Linden Air Duct Cleaning, and we coordinate our Des Moines crews from our Seattle dispatch office, which means a real person answers when you call (980) 447-2498. We know exactly what the homes along Marine View Drive, Redondo, and Woodmont deal with because we’re under the same SeaTac flight corridors you are – and that changes how we approach every repair.
Why Linden Air Duct Cleaning Is Des Moines’s Preferred Air Duct Repair Company
Since 2004, we’ve worked inside the crawl spaces and mechanical rooms of Des Moines homes built during the 1950s through 70s boom – the ranch-style and split-level stock that dominates neighborhoods like Zenith and Midway. That heritage means we’ve seen the full range of what Puget Sound humidity does to sheet-metal ductwork over five or six decades. Our Air Duct Repair team arrives with the specifics already in hand: the tech’s name and photo are sent to you before the visit, and they show a photo ID badge at the door before stepping inside. No surprises, no unmarked vans.
Every repair job we do in Des Moines gets a written price before any work begins. That’s not a promotional offer – it’s the standing rule, same as the 365-Day Done Right Promise covering every repair. If a covered repair doesn’t hold within that year, we come back at no charge. Homeowners tell us that matters when they’re deciding who to let into their house, especially with kids home during the day or an older parent living alone. Marcus Veale, who leads our team, insists on this standard for every single job because a duct repair that half-fixes the problem is worse than doing nothing at all.
We answer the phone live, 24 hours a day. No voicemail loops when you’re standing next to a HVAC closet wondering why the upstairs bedrooms never warm up.
Duct Replacement in Des Moines
Duct Replacement in Des Moines usually means pulling out flex duct retrofits from the 1980s and 90s that have sagged in vented crawl spaces, collected condensation, and separated at the seams. Homes in the 98198 and 98166 ZIP codes were heavily retrofitted during that era, and the combination of persistent ground moisture and the aircraft soot that settles into duct liners means many of those runs are past saving by the time we’re called. A full replacement for a typical 1,500 to 2,200 square foot Des Moines ranch runs between $2,200 and $3,800. For a larger split-level with multiple supply trunks, expect $3,200 to $4,200. The written price covers the entire scope before we start – no per-vent add-ons.
When Replacement Beats Repair
If a camera inspection shows the internal liner of a flex duct has separated from the spiral wire, cleaning won’t fix it. That separated liner creates a pocket where moisture and microbial growth sit year-round, and it rips open further every time the system cycles. In crawl spaces off South 216th Street and throughout the Woodmont area, we regularly find this exact failure in homes where the original 1960s sheet-metal trunk was partially replaced with flex decades later.
Replacement also makes sense when the existing ductwork is uninsulated metal running through a vented crawl space. Des Moines’s October-through-April humidity keeps those surfaces damp, and condensation drips onto the crawl-space floor every heating season. Insulated replacement duct designed for unconditioned spaces stops that cycle, and it’s often the same price as band-aid re-insulation once you account for the labor of wrapping every seam.
What Replacement Includes
Every replacement job includes removal and disposal of the old duct, new R-8 insulated flex or rigid metal runs sized to the system, sealing at every connection with mastic, and rebalancing of the supply registers. We use professional equipment from Rotobrush and Nikro for the negative-pressure cleaning of the air handler and blower assembly before the new duct goes in – otherwise you’re connecting clean duct to a dirty system.
Ductwork Installation in Des Moines
Ductwork Installation in Des Moines typically involves either extending an existing system into a converted garage or finished basement, or installing fresh supply and return runs as part of a furnace or heat pump upgrade in older homes that never had proper return air. The 1950s and 60s homes along Marine View Drive and in the Saltwater State Park area were often built with undersized supply trunks to begin with, and decades of add-on remodels have left many systems badly out of balance. New ductwork installation for a single-room addition generally runs $700 to $1,600, while a whole-home duct system installed in a crawl space starts around $3,500 for smaller homes and climbs from there.
Sizing and Sealing Done Right
A new duct run that’s sized by guesswork will whistle, starve the farthest registers, and drive up the heating bill. We calculate static pressure and airflow requirements before cutting the first hole. In Des Moines, where the marine air means systems run more months of the year for dehumidification alone, getting the return air right matters as much as the supply side.
When the Duct Isn’t the Problem
Sometimes we’re called for duct installation and the real issue is the air handler itself. If the blower motor wheel is matted with jet soot and damp lint – something we see in homes under the SeaTac departure corridor more than anywhere else in Puget Sound – the correct order is to clean the handler under negative pressure with HEPA filtration first, then install the new duct. Connecting new duct to a fouled blower sends all that debris right back through your clean runs within a month.
Trusted Brands We Service in Des Moines
We work on all major residential duct systems and stock the parts that Des Moines homes actually need – insulated flex duct in common sizes, mastic sealant, rigid metal elbows, and replacement grilles that fit the older register boxes found throughout the city’s mid-century housing stock. On the air-quality side, we install and maintain products from Aprilaire, Abatement Technologies, and Guardsman for homeowners who want whole-house filtration or UV treatment upstream of the coil. If you have a Rotobrush or Nikro system in place already, our Air Duct Repair team services those too, and because most replacement materials are on our trucks, we typically complete the job in a single visit without a second dispatch for parts.
Common Air Duct Repair Problems We See in Des Moines Homes
- Sagging flex duct in vented crawl spaces. The 1980s-90s retrofits common across Des Moines’s post-war neighborhoods sag between supports, and the low points collect condensation that never dries between October and April. The moisture pools debris, which feeds microbial growth inside the liner.
- Separated duct joints and air leaks. Original sheet-metal trunk lines from the 1950s-70s were assembled with friction fittings or old tape that dries out and fails over decades. Once a joint separates, your conditioned air heats the crawl space instead of the bedrooms, and crawl-space air gets pulled into the return side.
- Jet soot accumulation in sound-insulated homes. Many central and eastern Des Moines homes went through SeaTac’s residential sound insulation program, which tightened the building envelope so much that ultrafine particulates from aircraft departures get trapped inside and recirculate. Without source removal at the air handler, the soot just migrates into fresh duct liner.
- Mold colonization in uninsulated crawl-space runs. Des Moines’s shoreline position keeps relative humidity over 80% through the wet season, and without hard-freeze cycles to interrupt growth, mold in duct liner seams can establish year-round. Fogging a sanitizer on top of it doesn’t remove the colony or the dead biomass that follows.
Pricing for Air Duct Repair in Des Moines, WA
A targeted duct repair in Des Moines – sealing a separated joint, replacing a damaged section of flex, or re-supporting a sagging run – typically costs between $350 and $900. Replacing a single major trunk line or a full supply branch runs $1,200 to $2,400. Full duct replacement in a crawl-space home lands between $1,800 and $4,200 depending on square footage, the number of runs, and whether we’re also replacing the return side. The factors that move the price are access (crawl spaces with less than 18 inches of clearance add labor), the condition of the existing duct, and whether the air handler needs source-removal cleaning before reconnection. Every quote is free, and the written price covers the whole job before we touch anything. Call (980) 447-2498 for an exact number on your system.
We Also Serve Cities Near Des Moines
Our crews handle Air Duct Repair across the South Sound and beyond, including Seattle, Tacoma, Spokane, and Vancouver. If you’re in one of those cities and dealing with duct issues, the same written pricing guarantee and 365-Day Done Right Promise apply.
Serving Des Moines, WA - Our Local Coverage Area
We’re based in the Des Moines area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Repair in Des Moines
Yes, and here’s why: homes in the primary departure and arrival corridors are pulling ultrafine jet exhaust particulates into their HVAC intakes every time an aircraft passes overhead. In a typical Des Moines home without the sound-insulation retrofit, those particulates settle into duct liner and get recirculated, but some still flush out through natural air infiltration. In post-soundproofing homes on the east side, the tightened envelope traps those particulates, so they concentrate in the system. We generally recommend source-removal cleaning every 3 to 5 years for homes directly under the corridors, compared to 5 to 7 years for Puget Sound homes outside the flight paths. If you’re noticing a fine gray film on the register grilles, that’s the tell. Call (980) 447-2498 and we can camera-inspect before recommending a service interval.
No, and we’d caution any Des Moines homeowner against paying for it as a substitute for actual cleaning. Fogging an antimicrobial into ductwork does not remove the mold colony, the damp dust, or the degraded liner where the growth is anchored. It masks odor for a few weeks, then the musty smell returns when the next October rain cycle hits. What actually works is source removal: negative-pressure extraction of the debris, cleaning the air handler and blower wheel, and replacing any liner that has separated or taken on water. If a company’s pitch centers on a fogging upsell rather than what they physically remove from the duct, that’s your red flag.
Many 1960s sheet-metal runs in Des Moines can be salvaged if the metal itself is sound, the seams are intact, and the interior hasn’t been saturated. We can re-support sagging sections, re-seal joints with mastic, and insulate runs that were never wrapped. But if the metal is rusted through at the low points, or if the interior is colonized beyond what negative-pressure cleaning can remove, replacement is the honest answer. In a vented crawl space under a Zenith or Woodmont ranch, the deciding factor is usually whether condensation has been pooling for decades. A camera inspection settles the question in about 20 minutes.
A MERV 13 filter will capture more fine particulates in the air stream, and that’s a legitimate improvement for Des Moines homes under the flight corridors. But it will not remove soot already caked in your duct liner or attached to the blower motor wheel, and it won’t address the mold growing in damp duct seams. You’re catching new debris at the filter while the old contamination stays in place. The correct order is source-removal cleaning of the system first, then a high-efficiency filter like a MERV 13 from Aprilaire to keep future buildup down. We can install the filter housing during the same visit.
Ask these three questions: Do you put the air handler and blower wheel under negative pressure during the clean, or do you only access the registers? Do you camera-inspect before and after, and will you show me the before-and-after images of my own ducts? Is the price per system or per vent? A genuine clean addresses the entire system – supply, return, coil, blower, and plenum – and shows you proof. A register-only vacuum leaves the worst contamination in place and takes about an hour. Every Linden job in Des Moines includes a written price per system before work starts, camera documentation, and the 365-Day Done Right Promise backing it.
Get a Free Air Duct Repair Estimate in Des Moines
If your Des Moines home needs duct repair, replacement, or a straight answer about what’s actually going on in your crawl space, call us at (980) 447-2498. A live person answers, day or night. We’ll schedule a camera inspection, give you a written price before any work begins, and send the tech’s name and photo ahead of the visit. That’s the standard on every job – no exceptions, no fine print.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Des Moines since 2004.