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 Cleaning Across Sunnyvale
Our Air Duct Cleaning in Sunnyvale runs $380 – $690 for a typical single-family home, and the honest answer on frequency depends more on which side of the old orchard tracts your house sits than on any generic three-year rule. We’re Cardinal Air Duct Cleaning, part of the Relay Home Co. family (founded 2005), and we’ve cleaned enough Sunnyvale systems to know a 1960s ranch off Cherryhill Drive has very different ductwork than a 2015 townhome near Lawrence Station. Call (737) 727-2314 and a live person answers, any hour, any day. No voicemail loops.
Why Cardinal Air Duct Cleaning Is Sunnyvale’s Preferred Air Duct Cleaning Company
Sunnyvale homeowners tend to be engineers, product managers, and people who want to see the data before they sign. That’s exactly how we work. Omar Haddad, our owner, built Cardinal on a simple rule: written price before any work starts, before-and-after photos of your own ducts, and a 365-Day Done Right Promise. If it’s not right within a year, we come back and make it right. No fine-print carve-outs.
Our Air Duct Cleaning technicians are background-checked and uniformed, and they roll up with professional-grade tools: Rotobrush rotary agitation systems, Nikro HEPA-rated vacuum extraction, and Abatement Technologies containment units. That matters because a truck-mounted shop vac cannot pull the MERV-rated dust load out of a long flex run. The tools do the talking.
Sunnyvale customers book, track, and pay from their phones. That’s why every job operates under The Relay Standard: a live trackable arrival window, before-and-after photo documentation, and a digital invoice payable by link. You’ll know the tech’s name before the door opens. And when you call us about anything after the job, a human picks up. Every time.
Vent Cleaning in Sunnyvale
Vent Cleaning in Sunnyvale means clearing the supply and return registers, the visible boot connections, and the adjacent duct runs so air actually moves the way the system was designed to. In a 1960s ranch near Raynor Park, that often means registers caked with decades of paint overspray and lint. In a newer Lawrence Station townhome, it usually means light dust and a quick clearing. The work is different, so the quote is different. For a standard Sunnyvale house, vent cleaning as part of a full system cleaning typically runs $250 – $400, folded into the single flat per-system price rather than billed as a separate add-on.
Register and Boot Cleaning
We remove each register, clean the stamped metal face and the boot connection beneath, and use agitation tools to loosen buildup along the first few feet of duct. In older Sunnyvale homes this is where a surprising amount of debris hides, especially on return side registers near the floor.
Full System Cleaning
This covers the supply side, return side, and air handler cabinet in one visit. One flat price per system, agreed and written before we start. No per-vent math, no last-minute upcharge at the door.
Air Duct Repair in Sunnyvale
Air Duct Repair in Sunnyvale becomes necessary when original materials give out, and in this city that usually means the short-run flex duct in 1950s and 60s attic spaces. Flex deteriorates, joints separate, and collapsed elbows can pool debris or quietly bleed conditioned air into a hot attic. A standard repair like a new flex run section in Sunnyvale runs $180 – $450 depending on length and attic access. Prices are written before work begins, and every repair carries a written guarantee plus a free second visit if the repair fails.
Flex Run Replacement
We cut out the failed section and run fresh, properly sized flex with sealed connections. We use industry-standard mastic and fasteners, not duct tape, which dries out and fails in Sunnyvale’s attic heat. Then we run agitation tools through the whole system under negative pressure so no debris from the repair gets pushed into a bedroom.
Registers and Sealing
Loose supply registers, cracked boots, and leaking joints waste air and pull hot attic dust into the stream. We reseal and reattach, then test airflow at the register so you can feel the difference immediately.
Trusted Brands We Service in Sunnyvale
We service and clean all major HVAC Cleaning - Sunnyvale equipment brands found in Sunnyvale homes, including Honeywell, Aprilaire, and Guardsman filtration products. If your system has an Aprilaire media cabinet or a Guardsman filter housing, we know how to open it, clean it correctly, and put it back. We do not sell one-size-fits-all filter replacements. We stock common parts for Sunnyvale’s housing stock, from older ranch systems to newer tight-sealed townhome builds, which means fewer second-trip delays when a repair is needed.
Common Air Duct Cleaning Problems We See in Sunnyvale Homes
- Collapsed original flex in 1950s – 60s ranches near downtown and Cherryhill: The short-run flex in unconditioned attics deteriorates from heat cycling. When it collapses, debris pools at the elbow and the bedroom at the end of that run gets dust within a day of any cleaning.
- Dust settling within 24 – 48 hours of a cleaning: This is rarely a bad cleaning job. It is usually an open gap in the return side or a failed run pulling attic air into the system. We camera-inspect before assuming anything.
- Overheating attics degrading duct connections: Sunnyvale summer attics regularly hit 130°F and above. Tape dries, joints loosen, and the vacuum effect pulls hot, dusty air into the return path. Sealing repairs it.
- Short-cycling HVAC in 2010s north Sunnyvale townhomes: Newer sealed systems with restrictive MERV filters can clog faster than homeowners expect, especially during fire season when windows stay shut and the fan runs constantly.
Pricing for Air Duct Cleaning in Sunnyvale, CA
Most standard Sunnyvale air duct cleanings run $380 – $690 for a full system, based on square footage and the number of registers. A smaller townhome near Lawrence Station usually lands toward the low end. A larger 1960s ranch with 14 registers and original flex runs sits at the higher end. Air Duct Cleaning in Sunnyvale should not be priced per vent. That punishes older homes with more registers and encourages crews to rush. We quote one flat per-system price, written before we touch a single duct, and it does not change when the van pulls up. You’ll also get before-and-after photos of your own system. Call (737) 727-2314 for a free, no-obligation estimate.
We Also Serve Cities Near Sunnyvale
Our crews cover the surrounding South Bay, including Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re a few minutes down El Camino or across 280, the same flat per-system price and 365-Day Done Right Promise apply. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve Sunnyvale locally.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Cleaning in Sunnyvale
It depends on which side of the city’s housing split your ductwork falls on. A 1950s – 60s ranch near downtown Sunnyvale or Cherryhill with original short-run flex in an unconditioned attic may need cleaning every 3 – 5 years and often needs repair first. A 2010s townhome near Lawrence Station with sealed, tight runs might be fine for 5 – 7 years. The honest answer is: inspect, don’t guess. Camera inspection is part of our process. If the system looks clean, we’ll tell you to save your money. Call (737) 727-2314 and we’ll give you a straight assessment over the phone, no pressure.
Because per-vent pricing punishes older Sunnyvale homes that have more registers. A 1962 ranch with 14 vents gets quoted like a 6-register condo, so the crew rushes the supply and return ducts and skips source removal at the air handler. We give one written price for the whole system before any work starts. That price does not change at the door. What you’re quoted is what you pay. For a precise number on your home, call (737) 727-2314.
No. We do not promise same-day service, and we’d be suspicious of anyone who does. Proper air duct cleaning is a scheduled job that takes a few hours and requires the right equipment to be dispatched. We coordinate scheduling based on what your system actually needs. You’ll get a live trackable arrival window so you know exactly when the tech leaves and when they’ll arrive.
Your own ducts, not a stock photo. We run a camera scope through the supply and return runs before agitation and after negative-pressure extraction. The after photo shows the metal or flex surface with the dust load removed. If a run was collapsed or a boot was disconnected, the photo shows that too, and we’ll point it out before quoting any repair. You see what changed because you can compare the same section, same angle, before and after. No guesswork, no trusting a verbal summary.
No, and that’s important. Air Duct Cleaning covers the supply and return ducts connected to your HVAC system. The dryer vent is a separate run that exhausts lint and moisture outside, and it requires different tools. We do offer dryer vent cleaning as its own service, but we do not bundle it into the HVAC duct quote without telling you. If your dryer vent is clogged, we’ll quote it separately and transparently.
Have questions about your specific system? Call (737) 727-2314. Omar and our team will talk through what your house actually needs, what it’ll cost, and when we can get there. No scripts, no pressure, just a straight answer.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, part of the Relay Home Co. family (founded 2005).