Turn-KeyDuct Replacement
- Manual D load + duct sizing
- R-8 insulated flex or sheet metal
- Mastic-sealed plenums
- HERS-tested duct leakage
Manual D · R-8 · Title 24
Replacement · Repair · Rebalancing · New Install
Inland EmpireDuctworkDesigned, Sealed & Balanced
Manual D sized trunks and branches, R-8 insulated flex, mastic-sealed seams, and CFM verified at every register. Title 24 compliant.
10 Years
Inland Empire
EPA 608
Universal Certified
Same-Day
Emergency Dispatch
Both Counties
Riverside & SB
Inland Empire Ductwork
The Duct System Is The Air System
Half of all comfort complaints we diagnose aren't the AC or furnace — they're the duct system feeding them. A perfectly tuned 16-SEER condenser can't fix a leaky trunk that loses 30% of its conditioned air into the attic, and one bedroom that's always 6° off from the rest of the house is almost never a thermostat problem. Tech On Call designs, replaces, repairs, and rebalances ductwork across the Inland Empire with Manual D sizing, R-8 insulated flex, mastic-sealed seams, and verified CFM at every register.
Most older Inland Empire homes were built with R-4 flex sized by rule-of-thumb, not Manual D. The result: undersized returns, oversized supplies, leaky boots, and rooms that never balance. New construction often isn't much better — production-builder ductwork is sized for the cheapest system that passes inspection, not for the system that's going to live there for 20 years. We measure static pressure and CFM before quoting any duct work, so the fix is the actual fix, not a guess.
Most of what we do is the unsexy stuff that actually moves the needle: replacing collapsed flex runs, adding a proper return-air drop, sealing every plenum seam with mastic, swapping undersized boots, and rebalancing dampers. When the whole system is past saving (rodent damage, asbestos-era sheet metal, or a complete failure to follow Manual D), we replace the whole envelope and coordinate Title 24 HERS testing. See related: duct cleaning, IAQ, and AC installation.
Licensed & Insured
Same-Day Service
Flat-Rate Pricing
Both IE Counties
Symptoms
Duct Problems We Fix Every Week
Diagnose · Repair · Restore
01
Hot & Cold Rooms
One bedroom is always 78° while the rest of the house is 72°.
02
High Static Pressure
Blower screaming, filters whistling — undersized returns or restricted ducts.
03
Visible Duct Damage
Crushed flex, disconnected boots, missing insulation in the attic.
04
Weak Airflow At Registers
Air barely whispers from far registers — leaks or undersized branches.
05
Leaky Plenums & Seams
Conditioned air dumped into the attic — Title 24 duct-leakage test failures.
06
Bad System Sizing
New condenser was right-sized but ducts weren't — system can't perform.
07
Missing Or Stuck Dampers
Two-story homes that can't balance summer-vs-winter floors.
08
Old / Asbestos-Era Ductboard
Pre-1980 fiberboard ducts that shed fibers and lost R-value decades ago.
Ductwork Services
From Patch Repair To Full Replacement
Turn-KeySame-DayDuct Repair
- Boot reseats & replacements
- Flex re-runs & insulation patches
- Plenum sealing
- Damper repair & replacement
High ROIRebalancing & Returns
- Return-air upgrades
- Manual J/D recalc
- Register & damper rebalancing
- Static pressure verified
Materials & Brands
The Materials We Use
ATCO, Hart & Cooley, Snappy, McGill AirFlow — all UL-181 listed insulated flex and galvanized sheet metal. No bargain-bin duct in your attic.
AprilaireHoneywellTrane CleanEffectsLennox PureAirCarrier InfinityiWaveREME HALOAirScrubberBroanPanasonicGreenheckCaptiveAireLoren CookReznorModineMammothPhoenix ManufacturingChampion CoolerMasterCoolAerocool
Every Duct Type
Every System We Design & Install
01
R-8 Insulated Flex
Standard for attic runs across the IE — quiet, well-insulated, fast to install.
02
Sheet-Metal Trunks
Hard-pipe trunks and plenums for low-static, long-life main runs.
03
Residential Systems
Tract homes, customs, and ADUs — single-system and zoned.
04
Light-Commercial
Offices, retail, restaurants — rooftop trunk-and-tap and zoned VAV.
05
Zoned Systems
Two-story homes and mixed-use spaces with motorized dampers and per-zone thermostats.
06
High Desert Builds
Hesperia, Victorville, Apple Valley — heavier insulation specs for big delta-T attics.
07
Duct + Equipment Combos
Best ROI when paired with a new condenser or furnace — single permit, single HERS test.
Process
How A Real Duct Job Runs
- 01
Call & Schedule
A real dispatcher answers — no phone tree. Same-day or next-morning ETA confirmed, and we text the tech's name and photo before arrival.
- 02
Inspection & Test
Flat-rate diagnostic. Tech measures static pressure, airflow (CFM), filter restriction, hood capture, and IAQ baseline — then explains findings in plain English.
- 03
Written Scope & Quote
You see the work and the price before anything starts. Diagnostic fee credits toward the repair when you proceed.
- 04
Install Or Repair
Most repairs (boots, dampers, fans, motors, filters) are completed same-visit. Larger ductwork or hood jobs scheduled within 48–72 hours.
- 05
Verify & Document
We retest static, CFM, and IAQ deltas and document everything — parts used, before/after numbers, warranty terms.
Inland Empire Ductwork
Manual D · R-8 · HERS Tested
The Duct System Is The Air System.
01
EPA 608 Certified
Universal-certified techs on every repair, install, and recovery — R-410A, R-32, R-454B handled correctly.
02
Same-Day Response
When the AC quits in the Inland Empire heat, you don't have hours. Same-day dispatch across both counties.
03
Flat Pricing
Diagnostic and repair quoted before any work begins. The number on-site is the number on the invoice.
04
Maintenance Plans
Spring tune-ups, filter swaps, and priority dispatch on annual plans built for desert summers.
View PlansRelated Services
Keep Exploring Tech On Call
01
Duct Cleaning
Whole-home brush + HEPA vacuum with borescope before/after photos.
Open
02Indoor Air Quality
MERV-13 media, UV-C, dehumidifiers, ERVs — best paired with new ducts.
Open
03AC Installation
New ducts pair best with a properly sized condenser — single permit, single HERS test.
Open
04Furnace Installation
Add new ducts during a furnace swap — biggest comfort gain you can get.
Open
Service Areas
Serving All of Riverside & San Bernardino County
Service Area
Riverside County
27
Cities
Don't see your city? Call (909) 239-6364 — we likely cover your area.
Ductwork FAQ
Ductwork Questions
01
How much does new ductwork cost?
$4,500–$9,500 for full-home replacement depending on size, register count, and attic access. Partial repairs and rebalancing start much lower.
02
How long does ductwork last?
Properly installed R-8 flex lasts 20–25 years; sheet metal trunks last 30+. Rodent damage and UV exposure shorten that.
03
Why is one room hotter than the rest?
Almost always undersized returns, leaky branches, or missing dampers. We measure CFM and static at every register before quoting.
04
Do I need a permit for new ductwork in California?
Yes, and Title 24 HERS duct-leakage testing is required on most full-system jobs. We pull the permit and coordinate testing.
05
Will new ductwork lower my energy bills?
If your old system was leaky (most are), yes — Title 24 mandates ≤6% total duct leakage. Older R-4 leaky duct systems often hit 20–30%. Sealing that alone usually drops cooling bills 10–15%.
06
Can you add a zone instead of replacing everything?
Often yes — adding a motorized damper and dedicated zone thermostat is a fraction of the cost of replacement, and works great on two-story homes.
07
What cities do you serve for ductwork and ventilation?
Every city in Riverside and San Bernardino County — Riverside, San Bernardino, Fontana, Rancho Cucamonga, Ontario, Corona, Moreno Valley, Temecula, Murrieta, Redlands, Hesperia, Victorville, and the Coachella Valley. High Desert dust loads drive a lot of our duct-cleaning and filter calls; coastal-IE humidity drives IAQ work.
08
Do you warranty ductwork and ventilation work?
Every ductwork install carries a workmanship warranty. Equipment — IAQ purifiers, dehumidifiers, exhaust fans, hoods — is registered with the manufacturer and most ship a 5–10 year parts warranty when registered within 60 days. We handle the paperwork.
09
Do you offer financing on whole-home IAQ or new ductwork?
Yes — financing is available on qualifying ductwork replacement, IAQ packages, and whole-home dehumidifier installs. We walk through monthly payment options and any SCE/SoCalGas rebates before you commit.
10
Is duct cleaning actually worth it?
It's worth it when the ducts are visibly dirty, after a remodel that put drywall dust into the system, after rodent activity, or for occupants with asthma/allergies. Routine "every spring" cleaning on an otherwise tight, well-filtered system rarely moves the needle. We'll borescope before quoting so you see the actual duct interior before paying. See duct cleaning.