Air Duct Installation, the Off Duty Way.
Ductwork is half the HVAC system and gets a tenth of the attention: the finest equipment breathing through undersized, leaky, badly routed ducts delivers weak rooms and strong bills forever. New duct installation done right starts at the room loads, routes with intention, and seals like the attic is 130 degrees, because it is.
Ductwork · Burnet & Central Texas
Half the System, Built Like It
The duct system is the delivery infrastructure everything else depends on: supplies sized to carry each room its calculated share, returns sized so the blower breathes instead of strains, trunks routed to keep runs short and velocities sane, and the whole network sealed and insulated against a Texas attic that spends summer above 130 degrees, hostile territory for anything carrying 55-degree air. New installations, first-time central systems, additions, and gut renovations, are the one moment all of it can be done right from the drawing, and our designs start where honest duct work always starts, the room-by-room load calculation that says what each register must deliver before any metal gets ordered.
The craft standards are specific and checkable: rigid trunk-and-branch layouts where geometry allows, flex duct used properly, pulled tight, supported to spec, never the crumpled spaghetti of tract-house attics, takeoffs positioned for flow rather than convenience, every joint sealed with mastic rather than the tape that gives the product its ironic name, insulation at current code values with vapor barriers intact, and boots sealed to the drywall so conditioned air arrives in rooms rather than wall cavities. Returns get equal engineering, the starved single return being the classic Texas sin, with sizing and pathways that let air actually complete its loop.
Commissioning closes it with measurement: static pressure at the equipment, airflow verified at the registers against the design numbers, and the duct map filed, because the system behind the drywall deserves documentation the next decade can use.
Local conditions shape this work more than most homeowners expect. Our summers stack week after week of hundred-degree afternoons, which means long compressor runtimes, drain lines moving gallons of condensate a day, and electrical components living near their limits from June through September. Lake humidity keeps the corrosion clock running even in mild months, and spring pollen packs filters fast enough to choke airflow in weeks. A tech who works this exact hundred miles every day builds all of that into the duct installation call: what to check first, which parts fail early here, and which settings survive a Texas cooling season instead of merely a laboratory one.
Ductwork
New Duct System Essentials
What separates engineered ductwork from attic spaghetti, item by item.
Designed from room loads
Every branch sized to its room’s calculated demand, the Manual D discipline that makes registers deliver.
Routed with intention
Short runs, gentle turns, sane velocities, the geometry that keeps airflow quiet and pressure low.
Sealed with mastic
Every joint and seam done properly, since duct tape’s one legendary failure is ducts.
Insulated for attic reality
Code-value wrap with vapor barriers intact, protecting 55-degree air through 130-degree territory.
Returns engineered equally
Sized and pathed so the blower breathes, ending the starved-return epidemic at the design stage.
Verified at the registers
Airflow measured room by room against design, the commissioning that proves the drawing.
Not sure this is your problem?
Call anyway. We name the likely cause on the phone for free, and if it turns out to be something small you can handle yourself, we say exactly that and save you the visit.
Why Off Duty
Where New Ductwork Happens
The projects cluster predictably: first-time central systems in older Hill Country houses getting the design-stage respect their structures demand, routing walked and argued before anything cuts; additions and garage conversions whose new rooms deserve engineered supply and return rather than a hopeful tee off the nearest trunk, the classic shortcut that steals from every other room; gut renovations where open walls make excellent ductwork cheap, the moment worth seizing; and new construction, where we work with owner-builders and contractors from the plans, rough-in through trim, delivering duct systems that make the equipment’s ratings real. Each project gets the same paper trail, design numbers, sealed-and-insulated verification, and register-measured commissioning.
The material conversations get referee honesty: rigid metal’s durability against flex’s economy, deployed by location and geometry rather than ideology, duct board’s honest niches, and the flex-done-right standard, tight, supported, full-radius bends, that separates legitimate flex use from the crushed-run attic archaeology our repair pages inherit. Texas attics eat sloppy ductwork within a decade; the installation standard exists to outlast the equipment it serves, twice over.
Here is how the visit goes. A call to (512) 925-3090 reaches a real tech, not a call center, at any hour. On site, the diagnosis runs on instruments until the cause is certain, and then everything gets laid out in plain English: what failed, what fixes it, and exactly what it costs, before work begins. When the duct installation work is done, it gets verified under load instead of switched on and waved at. If the pattern sounds simple, it is. It is also rare enough in this trade that people write reviews about it.
Money talk, handled the Burnet way: we say the price before the work, every time. The trip cost comes over the phone before we roll, the repair quote comes after diagnosis and before a single part goes in, and if the smart move is to not spend money at all, you will hear that too. Fair pricing shows up in every review we have because it is policy, not luck.
Worth saying plainly: this is not a problem that ages well. Systems compensate quietly right up until they cannot, and the failure that finally announces itself usually costs more than the one caught early would have. If your gut says something is off, that instinct is worth one free phone call. The worst case is we tell you everything sounds normal, which is a pretty good worst case.
Who does the work matters as much as what gets done. Off Duty is owner-operated: the person diagnosing your system is the person whose name carries the company, trained in the family trade and seasoned by ten years of Central Texas installs and repairs. You can see the standard in real job photos, and you will see it again in your own equipment closet.
This service runs wherever our trucks do: home base in Burnet, the Highland Lakes from Granite Shoals to Buchanan Dam, down the corridor to Round Rock and Austin, north to Killeen and Temple, and out to the sixteen-county edge at Waco, Boerne, and Fredericksburg. The whole map lives on the service areas page, with drive-time honesty built into every window we quote.
Diamond Contractor
Mitsubishi’s top ductless credential, earned with factory training.
Second Generation
Raised in the trade, ten years on the tools before the name went on a truck.
Warranty Authorized
JB and Mitsubishi warranty work: we file the claim, you skip the fight.
Open 24 Hours
A real person answers the phone at any hour, every day of the year.
The Standard
How This Work Gets Done Here
Here is the standard this work gets held to, spelled out. First, no guessing: the cause is proven with gauges, meters, and eyes on the actual equipment before a single part is recommended. Second, no padding: the fix that goes on the quote is the fix the system needs, sized and specced properly, with no mystery add-ons riding along. Third, no shortcuts: torque specs, code clearances, and manufacturer procedure all get followed even where nobody will ever look, because that is precisely where corners usually get cut.
And when it is done, it gets proven. Systems get run under real load, temperatures and pressures get checked against spec, and the numbers get recorded so the next visit starts from data instead of memory. You get the plain-English version of what was done and why, the workspace gets cleaned, and the price on the invoice is the price you heard before the work began. Hold us to all of it. Our neighbors in the reviews already do.
Air Duct Installation Questions
Asked Before We Roll a Truck
The ones the phone line hears most for this service, with the answers given at full length instead of sales-brochure length.
How much does new ductwork cost for a house?
The honest range spans with scope: a single addition’s supply-and-return runs price modestly, whole-house first-time systems land as the significant projects they are, sized by house complexity, routing reality, and material choices, and gut-renovation timing discounts everything by making access free. The real number arrives from the design walk: rooms counted and loads run, routing walked in the actual attic and chases, and the quote itemized, trunks, branches, returns, sealing, insulation, commissioning. Duct pricing folklore runs by the register or the square foot; ours runs by the drawing, which is why the installed result matches it.
Flex duct or metal: which should my house get?
Both, usually, deployed where each wins: rigid metal trunks carrying the main flows where straightness and durability matter, flex serving the branch runs where its routing forgiveness and cost earn their place, installed to the standard that redeems it, pulled tight, supported every few feet, full-radius turns, never compressed through framing like the tract-attic classic. All-metal systems have their place in exposed and high-duty applications; all-flex economy jobs are how the repair backlog got built. The design assigns materials by run, states the logic, and the installation honors the flex standard that most of the industry only gestures at.
Why does my new addition need its own return?
Because air is a loop, and supply without return is pressurization: the addition’s door closes, the supplied air packs the room, flow chokes, comfort dies, and the pressurized room exhales through every window gap while the rest of the house pulls makeup air from wherever it can, the whole system unbalanced by one missing pathway. The fixes are engineered per geometry, dedicated return runs where routing allows, transfer grilles and jump ducts where it does not, and the design includes them from the start, since retrofitting return paths after drywall costs multiples. Every room that closes a door needs its loop completed; the addition just makes the physics obvious.
Can new ducts be added to my existing system?
Routinely, with the capacity honesty first: the existing equipment and trunk system get measured, static pressure and current airflow, to confirm they can serve new branches before anything tees in, since overloading a system already at its limits steals from every existing room to feed the new one, the classic addition complaint. Where capacity exists, new runs integrate with proper takeoffs, sealing, and balancing; where it does not, the honest options get priced, trunk upgrades, dedicated equipment for the new space, the ductless alternative that frequently wins additions outright. The assessment answers it with numbers, and the addition gets served without robbing the house.
How long does duct installation take?
Additions and single-space projects typically run one to two days, whole-house new systems three to five by complexity and access, and new-construction rough-ins follow the builder’s calendar in the sequence walls demand, with commissioning’s register-by-register verification closing every variant. Occupied-house work stays livable, dust controlled, systems returned to service nightly where phasing allows, and attic-season scheduling respected, since August duct work is its own endurance sport and we plan it humanely. The design conversation beforehand is the real timeline variable; the installation itself, once drawn, is disciplined execution.
Related work: Ductwork Design · Air Duct Replacement · Return Air Installation · see real jobs in the gallery
Build the Half That Gets Skipped
Room-load design, mastic-sealed craft, and airflow proven at every register. Prefer to write it out? Send the form and we call you back.
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