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 Duct Sealing Across Eastvale
Duct sealing in Eastvale typically costs $450 – $1,200 for a whole-house seal, depending on system size and accessibility, and most jobs are completed in a single visit. We dispatch from our Inland Empire office and serve Eastvale neighborhoods including Riverwalk Vista, The Enclave, and Avalon Village. If your home was built after 2000 and your upstairs bedrooms never cool properly, unsealed boot collars and plenum joints from the original construction are the likely cause. Call us at (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is Eastvale’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Duct Sealing in Eastvale work is built around one reality: nearly every house here is new construction that never got properly sealed at framing. That local pattern means our crews know exactly where to look, what the camera will show, and how to fix it without cutting open walls.
Our technicians are background-checked and uniformed, and they arrive inside the quoted window. The price is written down before any tool comes out of the van. Every repair is backed by our 365-Day Done Right Promise: if the seal fails within a year, we return and make it right at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Eastvale homeowners aren’t dealing with decades of accumulated grime. They’re dealing with builder shortcuts. We understand the difference, and we price for the actual job, not a generic whole-house quote.
Duct Insulation in Eastvale
Duct Insulation in Eastvale addresses a specific problem in this city’s post-2000 housing stock: flexible ductwork running through 140-degree attics during July and August, where uninsulated or poorly insulated lines bleed cooled air before it ever reaches the register. Most Eastvale two-story plans have attic runs of 20 feet or more, and when that metal or flex is bare or the original insulation has compressed, you’re paying to cool your attic instead of your bedrooms.
A typical duct insulation job in Eastvale runs $600 – $1,400, depending on linear feet of duct and attic accessibility. We see this need most often in homes where the builder used minimum-code insulation at handover, or where original flex duct has sagged and the insulation jacket has torn at hanger points.
Attic Run Recovery
We remove degraded insulation, seal the underlying duct with mastic, then wrap with new R-8 insulation and secure at proper intervals so it doesn’t compress or sag. The goal is simple: the air that leaves your air handler arrives at the register at the temperature it started.
Plenum and Air Handler Wrap
The plenum and air handler cabinet in Eastvale homes are often uninsulated metal boxes sitting in unconditioned attic space. We wrap these with foil-faced insulation board or blanket, sealed at seams, to stop condensation and thermal loss that strains your compressor.
HVAC Duct Sealing in Eastvale
HVAC Duct Sealing in Eastvale is most often a post-construction correction, not an aging-system repair. Because this city was built so quickly between 2000 and 2020, builders routinely skipped mastic sealing at boot collars, plenum connections, and flex-to-trunk takeoffs. The result is visible on our camera systems: drywall dust streaks, fiberglass particles, and in some cases, gaps large enough to drop a pencil through.
Typical HVAC duct sealing in Eastvale costs $450 – $1,200 for a full system, with partial sealing of accessible leaks starting around $350. We price by the system, not by the vent, and we agree on the number before we start.
Boot Collar and Register Sealing
This is where we find the most leakage in Eastvale homes. The drywall crew cut the hole, the HVAC sub dropped the boot, and nobody sealed the gap between boot and drywall or the joint between boot and flex. We pull each register, seal the boot-to-drywall gap with fire-rated foam or mastic, and seal the flex connection with mesh-reinforced mastic.
Air Handler and Plenum Sealing
The return plenum in newer homes is often a site-built plywood box with a filter rack. Gaps at the filter slot, corners, and duct connections pull unfiltered attic air directly into your blower. We seal these with mastic and aluminum tape rated for ductwork, not the hardware-store tape that dries and falls off.
Trusted Brands We Service in Eastvale
Our crews carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and we stock filtration and sealing products from Aprilaire and Guardsman for Eastvale jobs. That means no waiting on parts shipped from out of state. If your system needs a specific filter housing, a sealed return air upgrade, or compatibility verification with an Aprilaire media cleaner, we can source it and install it on the same visit. We don’t use hardware-store tape or generic mastic. The products we put in your ductwork are the same ones specified for commercial installations, and we explain what each one does while we’re working.
Common Duct Sealing Problems We See in Eastvale Homes
- Builder-left boot collars unsealed at framing. In the Riverwalk Vista area and throughout Eastvale’s master-planned tracts, we regularly find boot collars that were never mastic-sealed during construction. Drywall dust and fiberglass particles migrate into supply ducts for years, and the homeowner only notices when the second story won’t cool.
- Flexible ductwork pinched or sagging in attic runs. Eastvale’s two-story plans often run flex duct across long attic spans. When hangers are spaced too far apart, the duct sags, creating low spots where debris collects and pressure drops. The resulting imbalance pulls unfiltered attic air through gaps at the plenum.
- Return air plenums built from unsealed site-built boxes. Many Eastvale homes use a plywood return plenum with a filter slot cut in. The corners and seams leak continuously, bypassing the filter entirely and feeding dust and attic insulation fibers directly to the blower motor and evaporator coil.
- Construction debris baked into duct walls after the first cooling season. New owners assume a 2019 or 2022 build is clean inside. But when the AC runs six months straight through Eastvale’s hot, dry summer, drywall dust and sawdust left in the ducts adheres to the flex interior. Sealing without cleaning first just traps the contamination.
Pricing for Duct Sealing in Eastvale, CA
Whole-house duct sealing in Eastvale typically runs $450 – $1,200. Partial sealing of accessible leaks starts around $350. Duct insulation runs $600 – $1,400 depending on linear footage and attic access. What moves the price: system size (single-story versus two-story), attic accessibility (truss spacing, duct location), whether we need to seal behind drywall or can reach everything from the attic or register openings, and whether the job includes cleaning before sealing.
We do not quote per-vent teaser prices that balloon at the door. We give one flat price per system, agreed in writing, before any work starts. Estimates are free. Call (361) 326-5060 and we’ll schedule a camera inspection that shows you exactly what we’re sealing and why.
We Also Serve Cities Near Eastvale
Our Inland Empire crews also handle Duct Sealing work in Los Angeles, San Diego, San Jose, and San Francisco. Each location operates independently under The Garrison Standard, with the same written pricing, background-checked technicians, and 365-Day Done Right Promise.
Serving Eastvale, CA - Our Local Coverage Area
We’re based in the Eastvale 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 Duct Sealing in Eastvale
Age isn’t the issue; builder practice is. Eastvale’s rapid construction between 2000 and 2020 meant corners got cut at framing, and boot collars, plenum joints, and flex connections were often left unsealed. The drywall dust and fiberglass you see on our camera isn’t from years of use; it’s from construction, still migrating because the gaps were never closed. Call (361) 326-5060 for a free camera inspection.
Duct cleaning removes debris; duct sealing closes the gaps that let debris in and conditioned air out. In Eastvale new builds, we almost always recommend both, because unsealed boot collars allowed construction dust to enter, and that dust will keep circulating until the gaps are sealed. We clean first, then seal, so we’re not trapping contamination. Call (361) 326-5060 for an estimate that covers both.
Yes. Eastvale’s hot, dry summers and Santa Ana wind events push AC systems to run for months straight. When ducts leak 20 – 30% of conditioned air into the attic, your compressor works harder and longer. Sealing those returns and supplies to code tightness typically reduces runtime and can lower summer cooling costs measurably. Call (361) 326-5060 for a pressure-test assessment of your system.
We use a combination of visual camera inspection, smoke pencils at registers and returns, and digital manometers to measure static pressure before and after sealing. In Eastvale’s flexible duct systems, we also inspect attic runs for sagging, pinching, and torn insulation that indicates underlying leakage. You’ll see the camera footage and pressure readings before we quote. Call (361) 326-5060 to schedule.
No. Duct sealing is routine maintenance and improvement, not structural modification. In Eastvale, where many homes are just past their original builder warranty, sealing is often the first proper maintenance the ductwork has received. We document our work with before-and-after photos and pressure readings, and we never alter load-bearing structure or electrical. Call (361) 326-5060 if you have warranty paperwork you’d like us to review before we start.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Eastvale since 2004.