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 Moreno Valley
Duct sealing in Moreno Valley typically costs $350 – $850 for a whole-house system, with most jobs completed in a single visit and priced in writing before we start. If you’re noticing uneven temperatures, dust blowing from registers, or utility bills climbing through hot Moreno Valley summers, leaking ductwork is often the cause. Call (361) 326-5060 for a free estimate, and we’ll send a background-checked, uniformed technician who knows the difference between tract-home flex duct off the 60 freeway and the rural systems past Sunnymead Ranch.
We’ve been dispatching crews from our Inland Empire office to Moreno Valley since 2004. Our technicians carry mastic, mesh, and professional-grade sealants on every truck, and we don’t quote per-vent teaser prices that balloon once we’re inside. The price we write down is the price you pay. That’s The Garrison Standard.
Why Hollis Air Duct Cleaning Is Moreno Valley’s Preferred Duct Sealing Company
Moreno Valley homeowners have long memories for no-shows and bait-and-switch pricing. We’ve built our reputation here by doing the opposite: arriving inside the quoted window, pricing in writing before any work starts, and leaving the site clean. Our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails within a year, we come back and make it right at no charge, including a free second visit.
Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday. When you schedule Duct Sealing with Hollis, you know who’s walking through your door: a background-checked, uniformed technician with tools from Rotobrush and Nikro, not a subcontractor in an unmarked van.
We know Moreno Valley’s housing stock. The 1980s-2000s tract homes with original flex duct. The older ranch pockets near downtown with retrofitted runs. The newer two-story developments in the east end with complex duct layouts. And the rural properties on unpaved roads where dust, wood ash, and Santa Ana wind debris load systems faster than anywhere else in the Inland Empire.
Duct Repair in Moreno Valley
Duct Repair in Moreno Valley means fixing the physical damage that sealing alone won’t solve: separated collars, crushed flex duct, corroded metal runs, and sagging lines that have pulled free from boots. In the tract homes that dominate Moreno Valley’s housing stock, we see original flex duct that’s now 20-30 years old, brittle from attic heat cycling, and sagging between joists. Rural properties face additional stress from wood heat and heavier particulate loading. A typical duct repair in Moreno Valley runs $280 – $620 depending on accessibility and the extent of damage.
When Repair Comes Before Sealing
Sealing over separated flex duct is a shortcut we won’t take. The gap keeps growing with thermal expansion, and tape or mastic bridging it will fail within a season. We repair the run first, then seal. That’s the difference between a fix that lasts and one that doesn’t.
Rural System Repairs
Properties past Sunnymead Ranch and along Box Springs Road often have detached shops or outbuildings with separate air handlers. We repair those runs too. Ignoring them means wood ash and desert grit keep circulating through a system that’s never properly sealed.
Air Duct Sealing in Moreno Valley
Air Duct Sealing in Moreno Valley closes the leaks that let conditioned air escape into attics, crawl spaces, and wall cavities. In a typical Moreno Valley home, 20-30% of heated or cooled air never reaches the living space. That’s money blowing through gaps at joints, plenums, and register boots. We seal with mastic and mesh, not hardware-store foil tape that fails under attic temperature swings. A typical whole-house air duct sealing job in Moreno Valley runs $350 – $850, with most homes falling in the $450 – $650 range.
Mastic vs. Tape in Attic Heat
Moreno Valley attics hit 100°F-plus in summer and cool rapidly at night. That thermal cycling cracks foil tape within months. We use duct mastic reinforced with fiberglass mesh, applied to NADCA standards. It flexes with temperature changes and maintains its seal for years.
Post-Sealing Verification
After sealing, we verify our work. Blower door testing or static pressure measurement confirms the system is holding pressure. We show you the before-and-after numbers, and we photograph the sealed joints for your records. No guesswork.
Trusted Brands We Service in Moreno Valley
Our trucks carry equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Honeywell, Aprilaire, and Guardsman. We stock sealants, collars, and repair fittings sized for the flex duct systems common in Moreno Valley’s 1980s-2000s housing stock. That means faster turnaround for you. We don’t wait on parts shipments from Los Angeles. For rural properties with older metal duct or specialized outbuilding systems, we source matching materials and schedule the repair for a single visit when possible. Every technician is trained on the same equipment roster, so the crew that arrives at your Sunnymead Ranch home or your property off Gilman Springs Road has what they need to finish the job.
Common Duct Sealing Problems We See in Moreno Valley Homes
- Santa Ana wind debris loading: After a wind event, fine desert dust and wildfire ash bypass coastal filtration and pour into Moreno Valley’s outdoor HVAC intakes. Leaky return ducts suck that debris directly into wall cavities and attic spaces, spreading it through the house even when filters are new.
- Original flex duct sag and separation: Thousands of Moreno Valley homes were built during the 1980s-2000s boom with cheap flex duct that sags between supports and pulls free at collars. Sealing the joints without repairing the sag is a temporary fix at best.
- Wood ash in rural systems: Properties on Moreno Valley’s outskirts that burn wood for heat see accelerated buildup in ducts and accelerated corrosion at metal joints. Ash is alkaline and degrades standard tape adhesives; mastic-and-mesh sealing is required.
- Condensation in poorly insulated attic runs: Moreno Valley’s hot days and cool nights create temperature swings that cause condensation on duct surfaces. Moisture breaks down foil tape and promotes mold growth. Proper sealing with vapor-appropriate mastic prevents both problems.
Pricing for Duct Sealing in Moreno Valley, CA
Whole-house duct sealing in Moreno Valley typically runs $350 – $850. Most standard tract homes fall between $450 – $650. Larger two-story homes in east Moreno Valley developments with complex duct runs may reach the higher end. Rural properties with detached shop systems or outbuilding air handlers add $180 – $340 per additional unit.
What moves the price: accessibility (crawl space vs. walk-up attic), extent of damage, number of separate systems, and whether repair work is needed before sealing. We do not quote per-vent prices. We price per system, in writing, before any work starts. The number on the page is the number at the door.
We also offer free estimates. A technician inspects your system, identifies leaks with camera and pressure testing, and gives you a written price. No obligation. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Moreno Valley
Our Inland Empire crews also handle Duct Sealing in Moreno Valley and surrounding communities: Perris to the south, Nuevo to the east, Colton to the northwest, and Riverside to the west. Same equipment, same written pricing, same 365-Day Done Right Promise.
Serving Moreno Valley, CA - Our Local Coverage Area
We’re based in the Moreno Valley 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 Moreno Valley
Every 3 – 5 years for rural properties on unpaved roads, compared to 5 – 7 years for tract homes near the 60 freeway. The combination of Santa Ana wind dust, unpaved road particulate, and heavier system loading means seals degrade faster. Call (361) 326-5060 for a free inspection and we’ll tell you where your system stands.
Yes. Wood ash is fine, alkaline, and abrasive. It accelerates tape adhesive breakdown and corrodes metal joints. Homes burning wood regularly should inspect seals every 3 years and use mastic-and-mesh applications, not tape. We check for ash loading during every estimate.
Yes. We regularly seal detached shop and outbuilding systems on rural Moreno Valley properties. These runs are often ignored but collect the same dust, ash, and debris as the main house. We price each system separately, in writing, and can often complete both in one visit.
MERV 8 – 11 for most Moreno Valley homes, with MERV 11 recommended for rural properties and during Santa Ana wind season. Higher MERV ratings filter more particulate but can strain older blower motors. After sealing, your system operates more efficiently, so it may handle MERV 11 where it struggled before. We check blower amp draw to confirm.
Because Santa Ana winds dump massive particulate loads that coastal cities never see, and leaky return ducts pull that debris into your walls and attic. Sealed ducts keep contaminants in the filter path, not in your building cavities. After a wind event, we see spikes in calls from Sunnymead Ranch and Moreno Valley Ranch where return-air grilles are caked with dust. Sealed systems stay cleaner longer.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Moreno Valley since 2004.