Santa Clarita Valley · Los Angeles County
New ductwork is the most under-sold upgrade in Santa Clarita, CA. A correctly sized duct system delivers the capacity you already paid for; an undersized one strangles a brand-new condenser. DC Air and Heating designs and installs complete duct and vent systems throughout Santa Clarita, Los Angeles County using Manual D methodology, and we test the finished system rather than assuming it works.
Installation covers a Manual D design based on the room-by-room load, removal of the old duct system, new R-8 insulated flex or rigid trunk lines, properly sized returns added where the home is starved, sealed plenums and boots with mastic, new registers and grilles, balancing dampers at each branch, and a post-install verification of static pressure and airflow at every outlet. HERS duct-leakage testing is coordinated where Title 24 requires it.
Attic temperatures in Santa Clarita routinely exceed 140°F in summer thanks to hot inland summers with mild but damp winter mornings, so duct insulation and sealing are performance items, not code checkboxes. The conditions we design around near Valencia and Saugus include zoning dampers stuck on multi-level homes and aging condensers in 1990s tracts. Across 91350, 91351, 91354, 91355, 91387, 91390 we most often find a single undersized return doing the work of two — the fastest fix available for uneven cooling.
Full duct system replacement in Santa Clarita, CA typically runs $3,900–$11,800 depending on home size, register count, attic or crawl access, and whether returns need to be added. Partial work — adding a return, replacing a few runs, rebuilding a plenum — is priced individually. Duct work bundled with equipment replacement is discounted because the crew is already on site, and financing applies to the whole project.
Santa Clarita is over the pass and about 1,200 feet lower than the Antelope Valley, so the load profile flips: cooling hours dominate, winters are mild, and heat pumps make far more financial sense here than they do in Acton or Tehachapi. The housing is largely 1980s-through-2000s tract construction with attic air handlers and long flex runs to the far bedrooms, which is why room-to-room temperature complaints are the single most common reason we get called out. Permits are issued by the City of Santa Clarita. Travel from Lancaster runs 35–50 minutes depending on the 14 through Soledad Canyon.
We are a locally owned Los Angeles County HVAC contractor headquartered at 5345 West Avenue M8 in Lancaster — about 32–42 miles from Santa Clarita, CA, or 40–55 minutes in normal traffic. That proximity is why same-day service is realistic here rather than aspirational. Every technician lives in the Santa Clarita Valley, every price is flat-rate and shown in writing before work starts, and every repair carries a one-year labor warranty. We hold California C-20 license CSLB #1158770, carry $2M liability coverage, and maintain a 5.0-star Google rating across 135+ verified reviews. Whatever it takes.
Not always, but we measure before answering. If the existing system tests within static pressure limits and the runs are intact and sealed, we keep them. If the ducts cannot carry the airflow the new equipment needs, replacing them is what makes the new system perform in Santa Clarita heat. See HVAC Duct & Vent Cleaning in Santa Clarita, CA.
A typical Santa Clarita single-story home takes one to two days. Two-story homes, tight crawl spaces, or projects adding new returns and chases can run three days. We keep the system operable overnight whenever the work allows. See HVAC Duct & Vent Repair in Santa Clarita, CA.
Our trucks dispatch from 5345 West Avenue M8, Lancaster, CA 93536, roughly 32–42 miles from Santa Clarita, CA — typically 40–55 minutes door to door. Calls placed before 4 PM are normally handled the same day, seven days a week, and dispatch texts you a live tracking link with your technician's name and ETA. See HVAC Duct & Vent Repair in Santa Clarita, CA.
Yes. DC Air and Heating LLC holds California C-20 HVAC contractor license CSLB #1158770, carries $2M general liability, full workers' compensation, and a $15,000 contractor's bond. We pull permits with the Los Angeles County building department and complete Title 24 / HERS verification where the work requires it. See HVAC Duct & Vent Cleaning in Santa Clarita, CA.
Full duct system replacement in Santa Clarita, CA typically runs $3,900–$11,800 depending on home size, register count, attic or crawl access, and whether returns need to be added. Partial work — adding a return, replacing a few runs, rebuilding a plenum — is priced individually. Pricing is flat-rate and identical for every Santa Clarita address — Full duct system replacement typically $3,900–$11,800. You see the number in writing before any work begins, and there is no trip charge inside 91350, 91351, 91354, 91355, 91387, 91390. See HVAC Duct & Vent Repair in Santa Clarita, CA.
Yes. Approved Santa Clarita homeowners can use Synchrony plans through DC Air and Heating: 0% for 24 months, 5.99% for 58 months, or 7.99% for 115 months. Applications run soft-pull first, take about two minutes, and can be completed at your kitchen table before the technician leaves. See HVAC Duct & Vent Repair in Santa Clarita, CA.
We cover all of Santa Clarita, CA including Valencia, Saugus, Newhall, Stevenson Ranch, Castaic, serving ZIP codes 91350, 91351, 91354, 91355, 91387, 91390 plus the surrounding Santa Clarita Valley. Our shop at 5345 West Avenue M8, Lancaster, CA 93536 is roughly 32–42 miles away, about 40–55 minutes in normal traffic, so Santa Clarita is a daily route for our trucks rather than an occasional trip.
Every repair carries a one-year labor warranty, and installed equipment carries the manufacturer's parts coverage — typically ten years when we register it for you, which we always do. Extended labor coverage is available on installations. Warranty work in Santa Clarita is scheduled at the same priority as paid service calls. See HVAC Duct & Vent Cleaning in Santa Clarita, CA.
Real Google reviews · serving Santa Clarita, CA · ZIP 91350, 91351, 91354
5 out of 5 stars
"Rick and his crew went above and beyond when our aircon failed in the heat of August. Rick bought a new mobile air conditioner to cool our house over the weekend without us even agreeing to buy from DC Air. Honest, fair, and professional. Highly recommend!"
Joe Herring
Google review · AC repair
5 out of 5 stars
"This word Exceptional , well it doesn’t even describe this Company and the service that I graciously recd today! All thanks to Mr Rick C. Rick is beyond outstanding ! Not only is he so knowledgeable ,he is honest, trustworthy , caring for all his Customers! and he is Christian faith as well! God is good , and I know he sent me Rick and this amazing Company! Only one company that I will use for my HVAC Air n Heating moving forward in the future here it will always be DC AIR N HEATING ! Thank you beyond …. Mare"
Mary Terry
Google review · Heating
5 out of 5 stars
"This company treats you like family. We have an old mobile with a badly installed heater, most companies want nothing to do with our situation, Rick and his crew went the extra mile and got us going with AC too. Rick can master any issue and he seems to do it daily. Thank you Rick and crew!!!"
Mona Foster
Google review · Installation
The work Santa Clarita homeowners most often book alongside this service — matched to local conditions (hot inland summers with mild but damp winter mornings) and ZIPs 91350, 91351, 91354, 91355, 91387, 91390.
Whole-home duct and vent cleaning typically $495–$1,250
View hvac duct & vent cleaningDuct repairs and sealing typically $385–$2,400
View hvac duct & vent repair$129 single-system tune-up; $19/mo Club Membership covers two visits a year
View a/c system maintenanceMost repairs $185–$895 flat-rate; $89 diagnostic waived on approval
View a/c system repairInstalled systems roughly $11,600–$29,400 depending on tonnage and tier
View install acSingle-zone mini-splits from roughly $5,400; multi-zone systems $9,800–$24,600
View ductless heating & a/c servicesDispatching from 5345 West Avenue M8 in Lancaster — 32–42 miles away, about 40–55 minutes door to door. Flat-rate pricing in writing before work starts. CSLB #1158770.
Santa Clarita, CA and the surrounding Santa Clarita Valley — ZIPs 91350, 91351, 91354, 91355, 91387, 91390. Neighborhoods covered daily: Valencia, Saugus, Newhall.
Monday–Sunday, 7:00 AM – 8:00 PM. Same-day appointments in Santa Clarita when you call before 4:00 PM. After-hours emergency dispatch available.