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 Bloomington
Duct sealing in Bloomington typically runs $450 – $1,200 for a whole-home system, and most jobs are completed in a single visit. If your home was built between the 1950s and 1970s, you’re probably losing conditioned air through joints that have separated from decades of soil settling and seismic movement. We’re the Bloomington crew that finds those leaks, prices the fix in writing, and seals them with mastic and mechanical fasteners that hold.
Our dispatch and scheduling are coordinated from our Inland Empire office, and our technicians serve Bloomington directly with Bloomington Dryer Vent Cleaning. We know the ranch tracts west of Valley Boulevard, the newer infill near Locust Avenue, and the mixed housing around Slover Avenue. That local knowledge matters because Bloomington’s position downwind of the Chino Agricultural Preserve and the 10/60 interchange means your ducts collect a specific blend of fine soil and diesel soot that seals into joints differently than ordinary house dust. We see it on camera inspections every week. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Bloomington’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing team operates under The Garrison Standard: arrive inside the quoted window, price in writing before any work starts, complete the job by the book, and leave the site clean. Bloomington homeowners get the same written guarantee that backs every Hollis location.
Our technicians are background-checked and uniformed. You know who is walking into your home before they arrive. The price we write down is the price you pay. It does not move at the door. Every repair is covered by our 365-Day Done Right Promise: if the work 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, no waiting until Monday. That matters when you’re dealing with dust pouring from your registers after a Santa Ana wind event and need to talk through whether it’s a sealing issue or something more.
Duct Repair in Bloomington
Duct Repair in Bloomington often starts with a homeowner noticing uneven temperatures, rising energy bills, or visible dust around registers. The repair involves locating disconnected or damaged runs, reconnecting separated joints, replacing crushed flexible ducting, and restoring proper airflow before any sealing work begins. In Bloomington’s market, duct repair typically runs $300 – $800 depending on accessibility and the extent of damage. We always inspect with a camera first so you see what we see.
Separated Sheet-Metal Joints
The original sheet-metal trunk lines in 1950s – 1970s ranch homes were joined with slip connections and tape that degrades over decades. Soil settling and minor seismic movement common to this area pull those joints apart. We reconnect with mechanical fasteners and seal with mastic rated for HVAC use, not hardware-store tape that will fail again in two seasons.
Crushed or Disconnected Flexible Ducting
Newer two-story infill homes in Bloomington often use flexible ducting that gets crushed behind drywall or disconnected at the plenum during construction or subsequent repairs. Sealing alone won’t fix physically damaged duct. We replace the compromised section, support it properly to prevent future sagging, then seal the connection points.
Air Duct Sealing in Bloomington
Air Duct Sealing in Bloomington addresses the conditioned air you’re losing to your attic, crawl space, or wall cavities through gaps and leaks in your duct system. The process involves pressurizing the system to locate leaks, then sealing accessible joints, plenums, and connections with mastic or aerosol sealant depending on the application. A typical whole-home sealing job in Bloomington runs $450 – $1,200. We test before and after so you see the improvement in measured airflow.
Mastic Sealing for Accessible Joints
For ductwork we can reach in attics or crawl spaces, we brush on duct sealing mastic, a thick, flexible compound that adheres to metal and flexible ducting alike. It remains pliable through temperature swings, which matters in Bloomington attics that hit 140°F in summer. We apply it to plenum connections, trunk-line joints, and register boots.
Aerosol Duct Sealing for Hidden Leaks
When leaks are inside wall cavities or otherwise inaccessible, we may recommend aerosol duct sealing. This pressurizes the system and injects sealant particles that accumulate at leak points. It’s particularly effective in newer Bloomington homes with tight building envelopes where even small leaks represent a large percentage of total system loss.
Trusted Brands We Service in Bloomington
Our equipment roster includes Rotobrush rotary brush systems for agitation and debris removal, Nikro negative-air machines that maintain proper containment during cleaning, and filtration and sealing products from Abatement Technologies and Guardsman. We stock parts and materials locally for Bloomington jobs, which means faster turnaround when we find a separated joint or deteriorating insulation that needs addressing before sealing can begin. You won’t wait two weeks for a specialty mastic or a replacement plenum section. Our technicians carry the common sizes and materials for the housing stock we see here, from original sheet-metal trunks to modern flexible runs.
Common Duct Sealing Problems We See in Bloomington Homes
- Original sheet-metal joints separated by soil settling. The 1950s – 1970s ranch homes that make up much of Bloomington’s housing stock were built on expansive soils. Decades of minor settling and seismic movement pull apart slip-fit duct joints in attics and crawl spaces. We find gaps of an inch or more, sucking attic air directly into the system.
- Diesel soot and agricultural dust sealing into joints. Bloomington’s downwind position from the Chino Agricultural Preserve and the 10/60 interchange means fine particulate combines with ordinary house dust to form a hardened, greasy deposit in duct joints. Standard cleaning won’t remove it; the joint must be opened, cleaned, and resealed with proper mastic.
- Deteriorating external insulation releasing fiberglass. In the older tracts west of Valley Boulevard, attic ducts were wrapped in external fiberglass insulation that crumbles after decades of heat cycling. After Santa Ana wind events, homeowners report visible particles blowing from registers. Sealing over this compromised insulation traps contaminants; we remove and replace the insulation before sealing.
- Disconnected flexible duct at the plenum in newer homes. Two-story infill construction around Locust Avenue and Slover Avenue often has flexible ducting that pulls away from the plenum due to poor initial support or thermal expansion. The homeowner feels weak airflow upstairs while the system runs constantly. We reconnect, support, and seal.
Pricing for Duct Sealing in Bloomington, CA
A typical duct sealing job in Bloomington runs $450 – $1,200 for a whole-home system. Single repairs to accessible joints start around $300. What moves the price: the extent of leak points found during pressure testing, whether we need to repair or replace damaged duct sections before sealing, accessibility (crawl space versus open attic), and whether deteriorating insulation must be removed and replaced first.
We do not quote per-vent prices or teaser rates that balloon once we’re inside. We give one flat price per system, agreed in writing before any work starts. You’ll see the pressure-test results before and after. We also provide before-and-after photos of accessible work so you know the sealing was actually done.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Bloomington
Our crews work throughout the Inland Empire, including Duct Sealing in Bloomington and neighboring Rialto, Fontana, Riverside, and Grand Terrace. If you’re unsure whether your address falls in our service area, call and we’ll confirm.
Serving Bloomington, CA - Our Local Coverage Area
We’re based in the Bloomington 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 Bloomington
Bloomington’s position downwind of the Chino Agricultural Preserve and the 10/60 interchange exposes duct systems to a specific blend of fine agricultural soil and diesel soot that accumulates faster than ordinary house dust. This particulate is finer and more abrasive, and it seals into leaky joints in a hardened deposit that standard filters won’t catch. Call (361) 326-5060 for a camera inspection and we’ll show you exactly what’s inside your system.
Yes, we regularly seal original sheet-metal ductwork in 1960s ranch homes throughout Bloomington, particularly in the tracts west of Valley Boulevard. The process involves reconnecting separated joints with mechanical fasteners, cleaning hardened deposits from the joint faces, and applying HVAC-rated mastic that remains flexible through temperature extremes. We inspect with a camera first to confirm the metal itself is intact; if sections are corroded through, we’ll recommend replacement before sealing. Call (361) 326-5060 for an exact assessment.
Those particles are almost always from deteriorating external insulation wrapped around attic ducts, a common condition in Bloomington’s older ranch homes after Santa Ana wind events force unfiltered attic air through compromised duct joints. Sealing over this problem traps the fiberglass in your airstream. We remove the crumbling insulation, clean the duct surface, and apply new insulation before sealing any leaks. Call (361) 326-5060 to schedule an inspection.
Duct sealing closes the gaps that are pulling unconditioned attic air into your system and dumping heated or cooled air into spaces you don’t occupy. In Bloomington’s climate, where HVAC runs year-round, even 15% duct leakage can add 20 – 30% to your energy bill. We pressure-test to quantify the leakage, seal accessible points with mastic, and retest so you see the measured improvement. Call (361) 326-5060 for a free estimate with before-and-after pressure readings.
Yes, our duct sealing and repair work follows NADCA (National Air Duct Cleaners Association) assessment and sealing protocols, including proper containment, mechanical fastening of joints, and mastic application standards. Our technicians use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, not hardware-store materials. Every job is backed by our 365-Day Done Right Promise in writing. Call (361) 326-5060 with specific questions about our process.
We were called to a 1962 ranch home west of Valley Boulevard after a Santa Ana wind event; the homeowner reported visible dust blowing from the registers and a persistent musty odor. Using camera inspection and agitation tools, our tech found the original sheet-metal supply trunk had separated at a joint near the air handler, and the external insulation wrap was crumbling, releasing fiberglass into the airstream. We performed source removal under negative pressure, reconnected the run, and applied duct sealing to the plenum and accessible joints; the system now holds pressure and the dust complaints stopped.
Ready to stop losing conditioned air to your attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate on duct sealing in Bloomington. We’ll pressure-test your system, show you the leaks on camera, and give you a written price before any work starts. Every repair is backed by our 365-Day Done Right Promise: if it’s not done right, we make it right, including a free second visit.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Bloomington and the Inland Empire since 2004.